Separator for dry chemical cleaning system for articles and method for separating of water from siloxane solvent used in chemical cleaning process

FIELD: dry chemical cleaning of clothing, in particular, separator and method for extracting of water from solvent in the process of dry chemical cleaning.

SUBSTANCE: separator has main chamber equipped with inlet for receiving mixture of siloxane solvent and water from dry cleaning system and including upper layer and lower layer separated from one another by gravity force and containing siloxane solvent and water, respectively, with water concentration in lower layer being greater than in upper layer, device for adjusting flow of said mixture delivered through said inlet into main chamber and feeding said mixture from main chamber into filter containing material facilitating in coalescence for receiving of mixture forced through by means of device for adjusting flow of said mixture, and additional chamber for further separation of siloxane solvent and water. Additional chamber is connected with filter and is equipped with first inlet adapted for removal from additional chamber of at least upper layer containing siloxane solvent, and second outlet adapted for discharge of water from lower layer of additional chamber onto bottom of main chamber and communicating with third outlet for discharge of water from main chamber. Method for separating of water from mixture of siloxane solvent and water produced after dry chemical cleaning of articles is performed by means of said separator.

EFFECT: increased efficiency in separating of water from siloxane solvent and water mixture through gravitational separation of two mixture components having insignificantly differing densities.

25 cl, 4 dwg

 

The present invention in General relates to the field of dry chemical cleaning cloths, of textile materials, products, etc. and, in particular, to a method and separator to extract water from the solvent in a dry, chemical cleaning, possess unique characteristics in terms of density and specific gravity.

Dry chemical cleaning is an important industry in the world. Only in the United States there are more than forty thousand enterprises of chemical cleaning /many of them have numerous branches/. Industry chemical cleaning is a very important industry in the modern economy. Many items of clothing /other items/ need to be dry-cleaned to ensure that they will remain clean due to the removal of fats and oils for body care and looked decent by preventing shrinkage and discoloration.

To date, the most widely used solvent for chemical cleaning is perchloroethylene. He has numerous shortcomings, including its inherent toxicity and odor.

Another problem in this area is that the systems in use at the present time, different products require different handling to prevent damage during chemical cleaning.

How dry chemical cleaning precursors the ith level techniques include the use for different cleaning solvents and equipment. As mentioned earlier, the most widely used solvent is perchloroethylene. It has the advantage that an excellent cleaning solvent, but its disadvantage lies in its great danger to human health and the environment, i.e. it causes some forms of cancer and is very harmful to groundwater and aquatic fauna and flora. Because of these disadvantages perchlorethylene is prohibited in some areas. In addition, in the past tried and used other solvents, such as solvents, oil-based or hydrocarbon. These various solvents are less aggressive than perchlorethylene, but still classified as volatile organic compounds. As such, these compounds are regulated and permitted in most areas.

Industry dry chemical cleaning for a long time depends on solvent oil-based and well-known chlorinated hydrocarbons, perchloroethylene and trichloroethylene, used in cleaning products and clothing items. Since the 1940s, perchlorethylene regarded as a synthetic compound, which is non-flammable and has a high degreasing and cleaning ability, ideal for industry dry chemical cleaning. As was discovered in the early 1970s, perchlorethylene causes liver cancer in animals. It was t who eponym opening, since that time, the waste chemical cleaning was placed in landfills and dumps, from which they were videocialis in the soil and ground water.

Gradual tightening of the rules protection Agency U.S. environmental ultimately led to the adoption in 1996 of the law, according to which all enterprises dry chemical cleaning should apply cycles "dry to dry", this means that products and clothing go in the car dry and off dry. This required the creation of systems with "closed loop"that could catch almost all of the liquid or vaporous perchlorethylene. Technological "cycle" includes the location of the products or clothing in a specially designed washing machine, which can accommodate 15-150 lbs products or clothing items that are visible through a round window. Before placing in the machine product or clothing check and process through local stain removal. If the product is unusual, or, as it is known that delivers hassle, check the label to make sure that dry clean, according to the manufacturer, is safe for this product. If not, the stain may be permanent. For example, you may not see diabetes spot, but after passing through the process of chemical cleaning, it is oxidized and enevitsa brown. If the stain is associated with fat, the water would not have helped, as would a solvent because it dissolves the fat. Indeed, the main reason for dry chemical cleaning certain types of clothing that cannot be washed in a standard washing machine/ is the removal of accumulated oils for body care /known as fatty acids are/because they are very oxidized and emits a rancid odor.

Fat and fatty acids, which accumulate in the solvent, remove it by filtration and distillation of the solvent. In other words, boil the contaminated solvent, and all pairs when passing through the condensing coil condenses back into a liquid. The extracted liquid containing the solvent and water, and the liquid is passed through a separator to separate two immiscible liquids. Water can be obtained from the natural humidity of the surrounding air, which are textile product before cleaning. Another source of moisture can be the materials used during the preliminary stain removal.

Before removing the textile from the washing machine it becomes dryer. Through the camera let in hot air instead of venting to the outside, while the air flow passes through the condenser where the vapors are condensed to liquid. Then the liquid is passed through a separator for separating water from solvent and solvent recovery for re-use.

If the water is separated from the solvent, it will be wrapped in the attached tank and due to its density will settle on the bottom of the reservoir. When a sufficient level of water it will be selected pump system and can be pumped to the purified product, which would lead to damage of products.

If the water will be in the tank for a sufficient period of time, will begin the development of bacteria that will lead to a very unpleasant smell, which will be transferred to purify the product. The hydrocarbon solvent is a nutrient for bacteria and may contribute to the rapid development of bacteria. The surface boundary between the lighter thinner and more dense water is a boundary surface between water and solvent. On this surface section of the impurities soluble in the polar solvent may include fatty acids, food and sweat and have a normal body odor. Continued deposition can quickly lead to the development of bacteria and, eventually, to the odor.

Therefore, for professional dry chemical cleaning is very important to control the presence of water so as to prevent damage to the cleaned products and the formation of odors, which would lead to the dissatisfaction of the customer.

Some of the criteria for choosing an appropriate system for the separation of water and solvent is the difference between density and specific weight of solvent and water. The density or specific weight of perchloroethylene /most widely used solvent/ is 1,619, while that of water is 1.0. Another most widely used type of solvent is a solvent-based oil or hydrocarbon solvent whose specific gravity is within 0,754 and 0,820, with the most common hydrocarbon solvent /DF-2000/ - 0,77. The greater the difference in specific gravity between water and solvent, the easier the separation. Created gravity separators, which are used when the solvent has a higher or lower density than water, and the difference between the phases is greater than 0.03.

Although the developed system for separation of water and solvent, the proportion of which is significantly different from the specific weight of water /1,0/, there have not been any effort to separate water and solvents, whose share is close to 1.0.

For example, in U.S. patent 3451234 disclosed system for dry cleaning textiles, ensuring sharing of water and solvent and containing an inlet tube for supplying water and solvent, means for regulating flow from the inlet tube, a filter, separating the solvent and the water on the lower and upper layers, the exhaust pipe connected to the chamber to remove part of the upper layer from the chamber.

This Pat is those also described a method of dry cleaning articles includes stage dive products in liquid, removing the liquid from the products and the separation of the solvent and water.

The technical result of the present invention is used to create dry chemical cleaning products gravitational separator and method for separating water and solvent, the proportion of which is close to the specific weight of water.

This technical result is achieved in that the separator for the system dry chemical cleaning products, designed to separate water from the siloxane solvent used in this system includes a main chamber having an inlet for receiving a mixture of siloxane solvent and water from dry-cleaning and enclosing the top layer and bottom layer are separated by gravity and containing siloxane solvent and water, the concentration of which in the lower layer is greater than in the upper layer, means for regulating the flow of this mixture, coming from the inlet of the main chamber, the feed mixture from the main chamber into the filter containing material that promotes coalescence, for receiving the mixture, breakable by means of flow control, and an additional chamber for further separation siloxane solvent and water, connected to the filter and having a first issue is IC, designed for removal from the secondary camera at least part of the upper layer, containing siloxane solvent, and with the second release, intended for removing water from the bottom layer of the secondary camera on the bottom of the main chamber, communicated with the third release for the withdrawal of water from the main chamber.

Between the upper and lower layer in the main chamber can be formed in the surface section, and the inlet includes an inlet tube passing vertically in the main chamber to a location above the surface of the partition.

The inlet tube may have a horizontal end for the introduction of this mixture in the main chamber to provide maximum turbulence of the mixture in the main chamber.

The separator may further comprise a material that promotes coalescence placed in the opening end of the intake for processing the mixture of material contributing to the coalescence prior to its introduction into the main chamber.

The filter may further comprise a second material that promotes coalescence, for processing the mixture prior to its introduction into the secondary camera.

Material that promotes coalescence can be selected from the group consisting of a polymer of the form open cells, phenol-formaldehyde polymer and nylon.

Material that promotes coalescence may have perf the radio each of which has a size of from 10 to 100 microns.

The separator may further comprise a capacitor connected to the inlet for feeding him in the condensed mixture of water and siloxane solvent from the condenser.

A means of flow control may be made in the form of pump. The pump may be configured to actuate the float level sensor of this mixture located in the main chamber. The pump can be electric or pneumatic.

The separator may further comprise a rotary valve mounted in the third edition and driven float water level sensor to remove it from the bottom of the main chamber.

The separator may further comprise a rotary valve mounted in the third edition and is driven by two electrical contacts, closing the circuit when the water level rises to its removal from the bottom of the main chamber.

A means of flow control can be adapted to apply a mixture of the top layer of the main chamber in the filter.

This technical result is achieved by the fact that the method of separating water from a mixture of siloxane solvent and water, obtained by dry chemical cleaning products, using the above separator contains the stage of obtaining a mixture of the siloxane rastvoritelei water during dry chemical cleaning and the introduction and separation of this mixture in the specified separator.

This mixture can be entered into the main chamber at a location above the surface of the partition siloxane solvent and water.

The method can be carried out minimizing the turbulence of this mixture during its introduction into the main chamber. Minimizing the turbulence of this mixture can be accomplished by the introduction into the main chamber along a horizontal path.

In the process it is possible to coalesce the water in this mixture before introduction of the mixture in the main chamber.

With the introduction of the above-mentioned mixture in the secondary camera can minimize the turbulence. Minimizing the turbulence of this mixture can be performed by introducing an additional camera on a horizontal path.

In a way it is possible to coalesce the water in this mixture before its introduction into the secondary camera.

The introduction of this mixture in the secondary chamber can be accomplished by exceeding the level of the upper layer in the main chamber of the specified level.

In the process the mixture of siloxane solvent and water can be introduced into the separator without distillation.

In the present invention use a special solvent, which is obtained from the organic/inorganic hybrid /organosilicon/, whose specific weight is 0.95. The proximity of the density and specific weight of the solvent platnosci and specific weight of water /1,0/, as well as the viscosity of the solvent leads to the formation of small water balls during dry chemical cleaning. Standard gravity separator is used to separate conventional solvent and water, will not work with this /silicone/ solvent.

The above advantages of the present invention and its additional objectives and advantages will be better understood in the detailed description of the preferred variant of the invention, with reference to the accompanying drawings, which depict the following:

figure 1 depicts a schematic view of a machine for dry cleaning, which uses a solvent that has a boiling point, which requires the use of vacuum distillation;

figure 2 is a flowsheet showing the stage of the way dry chemical cleaning according to one variant of implementation of the present invention;

figure 3 is a process diagram showing the functional stage of the method of separation of water from solvent

4 is a schematic view of the means for separating water from the solvent according to the method of figure 3, when their density values are very close.

The present invention relates to a device and method used in dry chemical cleaning products, textiles leather products, etc.

Figure 1 schematically illustrates a system 5 for dry chemical cleaning, providing the possibility of interrelated stages of cleaning according to the present invention, although, as it can be used other layout system for chemical cleaning. It should be noted that the system 5 for dry cleaning, shown in figure 1, can be used to process the solvent of Class 3-A.

Dry chemical cleaning products or other objects start with placing them in a horizontal rotating drum 10 system 5. The wash cycle is carried out with applying the liquid to the dry chemical cleaning, containing siloxane solvent for silicone-based, pumped using pump 12.

Used siloxane solvents are volatile organosilicon compounds, such as linear and cyclic siloxanes. For example, cyclic siloxanes can be cyclic siloxanes D-5 or D-4 or tetramer cyclic siloxanes, such as octamethyl-cyclotetrasiloxane or pentamer-cyclic siloxanes, such as decamethyl-Cyclopentasiloxane, or hexamer-cyclic siloxanes, such as dodecamethyl-cyclohexasiloxane. Linear siloxanes can be linear siloxanes L-5. Other siloxanes that may be used include politiacal-cyclosiloxane and HEXAMETHYL-cyclotetrasiloxane. Moreover, the solvent can be formed from a combination of any of the foregoing siloxanes. This composition can be used with additives such as an ester, an alcohol or a simple ester, or detergents, or suspendresume agents.

The solvent is pumped from the working tank 14 or from a reservoir 16 for the new solvent and then into the drum 10 with the products. The pumped solvent can pass through the filter or directly feeding into the drum 10.

Then the solvent of the drum 10 circulates through the collector 20 of the buttons to the pump 12. After stirring for a predetermined period of time, the solvent is drained and pumped into any of the three tanks 14, 16, 22, is shown in figure 1. Then the drum 10 rotates under the action of centrifugal forces to drain the remaining solvent in any desired tanks.

Types of filtration devices that are compatible with a specific solvent, according to the present invention are the following: a rotating disk with a cell size of 20-30 microns, with a rotating disk with a cell size of 30 μm, you can choose to use diatomaceous earth; a tubular filter/flexible, rigid or convex/, which can also be used with diatomaceous earth, cartridge filter /carbon core, all carbon standard size, Bo is further or small/; and cartridge filter Wedge Wright", which may not require distillation cubic Can also use filters with a cell size of between 10 and 100 microns for filtering the condensed moisture before the split.

Possible filtering of the solvent to remove particles of dirt, which is released from the purified products. In addition, filtration of the solvent based on silicone eliminates the polymerization solvent even in the presence of a catalyst.

The solvent used for cleaning, shall be subjected to distillation at a flow rate of 10-20 gallons (38-76 l) per 100 pounds (45,35 kg) of refined products, if you do not use the above-mentioned cartridge filter Wedge Wright". To accomplish this you can use alembic 24, the receiving solvent from the filter 18 or from the reservoir 22 to the contaminated solvent. The solvent present in the tank 22 to the contaminated solvent can be introduced into the alembic by suction, so as alembic is under vacuum, which can be adjusted by a float ball valve (not shown).

Any number captured or condensed vapours from boiling cube, can be condensed by water cooling coils in pyrocondensation 26 distilling what about the cube. Thereafter, the condensed solvent flows, by gravity, into the separator 28. Depending on the boiling cube volumetric flow rate may be in the range of 0.75 and 1.25 Gal./min (2,85 and 4,75 l/min) and in accordance with this designed separator. The vacuum can be created by means of a liquid pump 30 or Venturi.

During the drying process the product roll in the drum 10 with the use of the air blowing fan 32 over the heating coils 34, which leads to heating of the incoming air flow to between 48 and 83°C. as the heating and evaporation of the solvent and water, the remaining products, the air flow out of the drum 10 and passes over the cooling coils of pyrocondensation 36 where vapors are condensed back into the liquid. This fluid through the pipe 37 by gravity into the separator 28.

Steamy air, coming out of the drum 10 has a temperature in the range 48-59°C. This temperature is important in that it is 17°or more below the flash point of the above-mentioned solvent. In one embodiment of the invention the volumetric rate of flow of the condensate may be limited to 0.75 Gal./min, and the separator, thus, can be designed for the total volumetric rate of condensate from pyrocondensation 26 and 36 paragonah the cube and the dryer section.

In accordance with the foregoing process of dry chemical cleaning there is less than one, and two or more sources of solvent in the separator. The ability to return again and the condensed solvent into the system for dry chemical cleaning depends on the separator 28 and its effectiveness.

To ensure the effectiveness of the proposed method of separation of water and solvent, is shown in figure 3. As shown, if the dry chemical cleaning stage 40 is removed from the product mixture liquid for dry chemical cleaning and water. Then at stage 42 this mixture enters the separator 28. When receiving a mixture of her push through the material, contributing to the coalescence stage 44. After that, the liquid chemical cleaning is separated from the water at the stage 46.

Figure 4 schematically shows the separator 28 for the system dry chemical cleaning products, designed to separate water from the siloxane solvent used in said system, containing the main chamber 48 having an inlet for receiving a mixture of siloxane solvent and water from the system dry clean, made in the form of an inlet tube 52 with the inlet opening 50, a vertically held in the main chamber 48 containing top layer and bottom layer are separated by gravity along the interface 54 and containing sootvetstvenno the siloxane solvent and water, the concentration in which the lower layer is greater than in the upper layer. Tube 52 is held to a location several inches above the surface 54 of the partition. The separator 25 is a means of regulating the flow of this mixture, made for example in the form of a submersible pump 60, coming from the inlet tube 52 in the main chamber, the feed mixture from the main chamber 48 in the filter housing 62 containing material, contributing to the coalescence 64, for receiving the mixture, breakable by means of a pump 60, and an additional chamber 68 for further separation siloxane solvent and water, connected to the filter 62 and having a first discharge tube 69, which is intended to remove from the additional chamber 48 at least part of the upper layer, containing siloxane solvent, and the second exhaust tube 70, which is designed for removing water from the bottom layer of the secondary camera 68 to the bottom of the main chamber 48 provided with a third outlet tube 74 to output water from the main chamber 48.

When the mixture of siloxane solvent and water reaches the main chamber 48 of the separator 28, the mixture may be filtered to prevent the separator 28 of thin fibers and small particles of dirt, which, in turn, can interfere material 64, contributing to the coalescence filter 62. For assests is of such a filter may be placed in the material, promoting coalescence 56, in the initial end of the inlet tube 52. Among the various materials that promote coalescence, according to the present invention may include nylon, nylon surface and nesmachivaemost nylon. Pyrocondensation 26, 36 system for dry chemical cleaning is shown in figure 1, can be connected so that there were no low points, where they could accumulate water. Thus, the flow of the mixture may be possible to use a direct input to the separator 28.

Siloxane solvent insoluble in water, but the water in the form of micelles suspendered in hydrated solvent until it forms a ball with a diameter of about 0,015 see Due to the total weight of the balls are deposited on the bottom of the main chamber 48. A mixture of siloxane solvent and water flows horizontally in the main chamber 48 from the horizontal ends 55 of the inlet tube 52, which minimizes turbulence.

Higher levels of all the liquid in the main chamber 48 actuates the float sensor 58 level, which, in turn, drives a submersible pump 60 with a nominal capacity up to 400 Gal./hour (1520 l/h). This pump 60 draws hydrated solvent level between 1/3 - 1/2 of the total height of the main chamber 48. The liquid is then pumped by pump 60 into the housing 62 of the filter, of which the first has a vertical cavity size between 2 and 20 inches ( 50.8 and 508 mm).

Then a mixture of siloxane solvent and water is forced through the material, contributing to the coalescence 64 located in the housing 62 of the filter. This material has a diameter of 2-12 inches (50.8 and 508 mm) in cross-sectional dimension of 1/4 to 4 inches (6.35 -101,6 mm). It should be noted that there may be three or more separate materials 64, located in the vertical cavity of the filter housing 62. Open form cells polyperformance.com polymer, which can be used for the manufacture of coalescense material 64, provides an opportunity to coalesce micelles of water. When jacking hydrating solution through the material, contributing to the coalescence 64, formed a certain amount of water balls that appear on the output side of the material 64.

The pump 60 in its implementation may be electric or pneumatic. The use of any means of flow control, such as pump 60 or, alternatively, vacuum, leads to sufficient separation. The selected tool flow control must provide a flow rate of 0,5-2,5 Gal./min (1,9-9,5 l/min). If the incoming stream of hydrated solvent exceeds the flow allowed by the material, contributing to the coalescence 64 can be lowered and re-positioning the float sensor 58 in the anti-shudder performance, acting on the tool flow control to provide a larger buffer space for hydrated solvent.

When separated liquid leaves the filter housing 62, it is in a vertical tube 66 in the additional chamber 68, which allows water balls deposited on its bottom. The separated solvent flows through the first discharge tube 69 to the solvent.

Beads of water that had accumulated at the bottom of the chamber 68 by gravity flow from her second outlet pipe 70 to the bottom of the main chamber 48. In one embodiment of the invention the discharge tube 70 has an internal diameter ranging from 1/8 to 1/4 inch (3,17 up to 6.35 mm). The water that accumulates at the bottom of the main chamber 48, is removed by the float sensor 72 water level, which mechanically opens the rotary valve in a third outlet pipe 74. In addition, you can use two electric or sensor /not shown/that when the water level rises and closes a circuit for the signal to a pneumatic or electric valve, which can release water from the main chamber 48. At the bottom of the main chamber 48, in addition, can be performed in the drain hole manually when periodic maintenance manually.

Main camera 48 may be made of stainless steel or al is Lena. It is not recommended to make the main chamber 48 of carbon steel, as it can quickly cause oxidation and rust. In addition, it is not recommended to use plastic pipes of PVC skin, because the solvent-based silicone will remove the plasticizer, making the material brittle. You can also use other materials that are not affected by the solvent.

The use of siloxane solvent provides flexibility with respect to temperature, which traditionally do not exist in the field of dry chemical cleaning. The temperature control liquid solvents used in areas dry chemical cleaning is crucial.

As mentioned earlier, the most common solvent is perchlorethylene, whose temperature in the ideal case, the support in the range of 25-28°C. He is also a regular interval for all other solvents currently used in the field of dry chemical cleaning. If you increase the temperature, then the result would have been much more aggressive solvent, leading to damage of the processed products. The increase in "Kari butyl" often leads to the dissolution of the dyes with the purified products, calling the transfer of these dyes to other cleansing products. Need regulirovanie the temperature forces the manufacturers of machines for dry cleaning to install the water cooling coils, placed in the main tanks, and jacket water cooling along the pipeline to provide heat transfer.

By increasing the temperature siloxane solvent according to the present invention before the interval 32-35°when cleaning possible manifestation of his aggressiveness, does not lead to the withdrawal or removal of dyes. This may best be carried out by circulation of water in a closed loop from the hot water tank through circulation pump and coils /previously used for cooling/ and back into the hot water tank. The circulation pump is controlled by a temperature sensor that can be placed in the solvent. The result is a precisely regulated temperature of the solvent, which affects the aggressiveness of the solvent without causing damage to the cleaned products.

Although the above described various embodiments of the invention, it is necessary to take into account that they are presented only as examples and not as limitations. Thus, the breadth and limits of the preferred option should not be limited to any of the above-described exemplary variants, but should be defined only in accordance with the following claims and its equivalents.

1. Separator for dry chemical cleaning products designed for the Department vidiot siloxane solvent, used in said system containing a main chamber having a feed inlet for receiving a mixture of siloxane solvent and water from dry-cleaning and enclosing the top layer and bottom layer are separated by gravity and containing, respectively, siloxane solvent and water, the concentration of which in the lower layer is greater than in the upper layer, means for regulating the flow of this mixture, coming from the inlet of the main chamber, the feed mixture from the main chamber into the filter containing material that promotes coalescence for receiving the mixture, breakable by means of flow control, and an additional chamber for further separation siloxane solvent and water, connected to the filter and having a first release, intended for removal from the secondary camera at least part of the upper layer, containing siloxane solvent, and the second edition, is designed for removing water from the bottom layer of the secondary camera on the bottom of the main chamber, communicated with the third release for the withdrawal of water from the main chamber.

2. The separator according to claim 1, in which between the upper and lower layers in the main chamber is formed, the surface of the partition and the inlet includes an inlet tube passing vertically in the main chamber to a location above the surface of the partition.

3. separator according to claim 2, in which the inlet tube has a horizontal end for the introduction of this mixture in the main chamber to provide maximum turbulence of the mixture in the main chamber.

4. The separator according to one of claims 1 to 3, which further comprises a material that promotes coalescence placed in the opening end of the intake for processing the mixture of material contributing to the coalescence prior to its introduction into the main chamber.

5. The separator according to claims 1 to 4, in which the filter further comprises a second material that promotes coalescence for processing the mixture prior to its introduction into the secondary camera.

6. The separator according to one of claims 1 to 5, in which the material contributing to the coalescence selected from the group consisting of a polymer of the form open cells, phenol-formaldehyde polymer and nylon.

7. The separator according to one of claims 1 to 5, in which the material contributing to the coalescence has a perforation, each of which has a size of from 10 to 100 microns.

8. The separator according to one of claims 1 to 7, which further comprises a capacitor connected to the inlet for feeding him in the condensed mixture of water and siloxane solvent from the condenser.

9. The separator according to one of claims 1 to 8, in which the means of flow control is executed in the form of a pump.

10. The separator according to claim 9, in which the pump is made with the possibility of bringing in step float level sensor above-mentioned mixture, located in the main chamber.

11. The separator according to claim 9, in which the pump is electric.

12. The separator according to claim 9, in which the pump is pneumatic.

13. The separator according to one of claims 1 to 12, optionally containing a rotary valve mounted in the third edition and driven float water level sensor to remove it from the bottom of the main chamber.

14. The separator according to one of claims 1 to 12, optionally containing a rotary valve mounted in the third edition and is driven by two electrical contacts, closing the circuit when the water level rises to its removal from the bottom of the main chamber.

15. The separator according to one of claims 1 to 14, in which the tool flow control adapted to apply a mixture of the top layer of the main chamber in the filter.

16. Method of separating water from a mixture of siloxane solvent and water, obtained by dry chemical cleaning products, using the separator according to claim 1, containing the stage of obtaining a mixture of siloxane solvent and water during dry chemical cleaning and the introduction and separation of this mixture in the specified separator.

17. The method according to clause 16, in which this mixture is introduced into the main chamber at a location above the surface of the partition siloxane solvent and water.

18. The method according to 17 or 18, in which the minimization of turbulence, the spine of this mixture during its introduction into the main chamber.

19. The method according to p, which minimize turbulence of the specified mix shall be implemented by its introduction into the main chamber along a horizontal path.

20. The method according to one of PP-19, which coalescent water in this mixture before introduction of the mixture in the main chamber.

21. The method according to one of p-20, which with the introduction of the above-mentioned mixture in the secondary chamber minimize its turbulence.

22. The method according to item 21, in which minimizing the turbulence of this mixture is carried out by its introduction into the secondary camera on a horizontal path.

23. The method according to one of PP-22, in which coalescent water in this mixture before its introduction into the secondary camera.

24. The method according to one of PP-23, in which the introduction of this mixture in the secondary camera performed in case of exceeding the level of the upper layer in the main chamber of the specified level.

25. The method according to one of PP-24, in which the mixture of siloxane and water is introduced into the separator without distillation.



 

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1 ex

FIELD: oil industry.

SUBSTANCE: method includes feeding oil emulsion to reservoir with flow 0,5-1 m3/hour through layer of drain water of same oil deposit with mineralization less than saturation limit at temperature 20-30°C and bed thickness of drain water 6-8 m. in reservoir oil is separated and directed to inlet of oil preparation plant.

EFFECT: higher efficiency, broader functional capabilities.

1 ex

FIELD: water treatment.

SUBSTANCE: invention relates to treatment of industrial and household waters, especially to separation of oil/water mixtures to remove coarsely dispersed and emulsified petroleum products therefrom. It is proposed to use styrene/divinylbenzene copolymer grains with fraction composition uniformity factor not higher than 1.6 as coalescent material to separated oil/water mixtures. In this case, price of material is lowered, oil/water separation efficiency is enhanced, and necessity of periodically washing material is omitted, whereas lifetime of material is prolonged, and efficiency temperature range is extended.

EFFECT: improved performance characteristics and reduced expenses.

2 dwg

FIELD: oil industry.

SUBSTANCE: method includes dispersing water in oil emulsion at input of accumulator. As water, drain-water of the same oil deposit is used with content of oil products no less than 60 mg/l and hard suspended particles no more than 50 mg/l in volume 8-15% of volume of prepared oil at a temperature 5-25°.

EFFECT: higher efficiency.

1 ex

FIELD: oil industry, particularly to prevent salt deposits in collector and measuring installations during oil production and transportation.

SUBSTANCE: method involves mixing product flows and transporting thereof, wherein compatible liquids are chosen for further mixing so that during mixing of above liquids oversaturated salt solution does not appear to prevent salt precipitation. Liquid for mixing is taken in amount enough to reduce salt concentration to value, which does not exceed saturated concentration and provides mineralization obtaining after liquid mixing. Mixing of liquid flows is performed out of process equipment and in tubes provided with release coating applied on inner tube surfaces.

EFFECT: increased simplicity due to elimination of chemical reagent usage and due to reduced number of stages.

4 ex

FIELD: dry chemical cleaning of clothing, in particular, separator and method for extracting of water from solvent in the process of dry chemical cleaning.

SUBSTANCE: separator has main chamber equipped with inlet for receiving mixture of siloxane solvent and water from dry cleaning system and including upper layer and lower layer separated from one another by gravity force and containing siloxane solvent and water, respectively, with water concentration in lower layer being greater than in upper layer, device for adjusting flow of said mixture delivered through said inlet into main chamber and feeding said mixture from main chamber into filter containing material facilitating in coalescence for receiving of mixture forced through by means of device for adjusting flow of said mixture, and additional chamber for further separation of siloxane solvent and water. Additional chamber is connected with filter and is equipped with first inlet adapted for removal from additional chamber of at least upper layer containing siloxane solvent, and second outlet adapted for discharge of water from lower layer of additional chamber onto bottom of main chamber and communicating with third outlet for discharge of water from main chamber. Method for separating of water from mixture of siloxane solvent and water produced after dry chemical cleaning of articles is performed by means of said separator.

EFFECT: increased efficiency in separating of water from siloxane solvent and water mixture through gravitational separation of two mixture components having insignificantly differing densities.

25 cl, 4 dwg

FIELD: oil industry, possible use for preparing oil emulsion at oil preparation plants.

SUBSTANCE: method includes feeding oil emulsion received from oil fields into devices for preliminary water disposal, separating water part from oil emulsion in preliminary water disposal devices and draining of water part to cleaning structures, cold separation of gas from oil emulsion in buffer vessels, heating of oil emulsion in heat exchangers and in furnace, hot dehydration of oil emulsion at hot sediment stages, desalination of oil emulsion in electric dehydrators with feeding of fresh water into electric dehydrators through disperser, feeding of drainage water after hot sediment and electric dehydrators to beginning of process at devices for preliminary water disposal, feeding of processed oil from electric dehydrators through heat exchangers into buffer vessels for processed oil, hot separation of gas in buffer vessels for processed oil and feeding of oil to consumer. In accordance to invention devices for preliminary oil disposal are divided on two steps. First step is operated in normal mode with feeding of oil emulsion from oil fields into inlet and from preliminary water disposal devices into buffer vessels. Second step is bound in parallel to first step, feeding of oil emulsion from oil fields into inlet of second step of preliminary water disposal devices is prevented. Drainage water after hot sediment and electric dehydrators is fed to inlet of second step of preliminary water disposal devices, without mixing thereof with water-oil emulsion received from fields. From second step of preliminary water disposal devices part of water is fed into cleaning structures and oil emulsion is fed into inlet of buffer vessels. Influx of drainage water into inlet of second step of preliminary water disposal devices is performed through lower manifold-distributor of device below layer of water cushion, while technological process in second step of preliminary water disposal devices is performed at temperature of 50-80°C.

EFFECT: increased efficiency of separation of water-oil emulsion at preliminary dehydration stage onto oil and water, stabilization of hot dehydration stages operation, desalination of oil and prevention of growth of number of intermediate layers from stable emulsions.

1 ex

FIELD: chemical industry.

SUBSTANCE: device comprises straight hollow cylinder (1) that has wall (2) at one of its faces or is in a contact with the wall. Cylinder (1) has outlet port (3) made in its side and outlet port (4) made in the other face for the phase to be separated, and third port (5) for the second phase. The size of outlet port (4) is less than that of outlet port (3), and size of port (5) is intermediate between them.

EFFECT: enhanced reliability.

18 cl, 6 dwg, 1 tbl

FIELD: oil producing industry; installations for the fields oil treatment.

SUBSTANCE: the invention is pertaining to oil producing industry, in particular, to the installations for the fields oil treatment. The installation for the oil treatment includes: the oil pipeline, the first stage of the oil treatment with the end divider of the stages (EDS) and the tank of the water preliminary discharge connected with the treatment facilities by the water discharge pipeline; the second stage of the oil treatment with the pipeline of the withdrawal of the low-mineralized semi-commercial water, which is connected to the oil pipeline; the heat exchanger installed on the oil pipeline after the first stage. EDS is supplied with the water discharge pipeline, which is connected to the pipeline of the water discharge from the tank of the preliminary water discharge before the treatment facilities, and the pipeline of the withdrawal of the low-mineralized semi-commercial water is connected to the oil pipeline before the tank of the preliminary water discharge. The treatment facilities are additionally supplied with the oil withdrawal pipeline, which is also connected with the oil pipeline located before the tank of the preliminary discharge of the water. On the water discharge pipeline located before the treatment facilities and on the oil pipeline located between EDS and the preliminary water discharge tank correspondingly there are the first and second heat exchangers, which are accordingly and sequentially connected to the heat exchanger of the second stage. The technical result of the invention is cooling of the finished commercial oil to the temperature of 30°С before its transfer to the oil stock accounting site; the increased efficiency of operation of the preliminary water discharge tank up to the water share in the oil of no more than 0.5 %; the increased degree of treatment of the oil-field water, the reduced power input.

EFFECT: the invention ensures cooling of the finished commercial oil to the temperature of 30°С before its transfer to the oil stock accounting site; the increased efficiency of operation of the preliminary water discharge tank up to the water share in the oil of no more than half percent; the increased degree of treatment of the oil-field water; the reduced power input.

1 dwg

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