Chloride removing in method for preparing phosphonomethyliminodiacetic acid

FIELD: chemical technology.

SUBSTANCE: invention relates to a selective method for removing chloride as NaCl from waste in method for preparing N-phosphonomethyliminodiacetic acid. The waste flow is neutralized with NaOH to pH value about 7, water is evaporated from flow of neutralized waste under atmospheric or lower pressure at temperature from 40°C to 130°C until to precipitation of NaCl. The precipitate is filtered off at temperature from 35°C to 110°C to isolate NaCl from filtrate and NaCl is washed out with saturated saline solution. Invention provides effective removal of NaCl from waste in a method for manufacturing N-phoaphonomethyliminodiacetic acid.

EFFECT: improved treatment method.

7 cl, 2 ex

 

The present invention relates to a method for the effective removal and extraction of chloride from waste method of obtaining N-phosphonomethyliminodiacetic acid. More specifically, the present invention includes the neutralization of the waste stream with sodium hydroxide (NaOH) and the crystallization of sodium chloride (NaCl) by evaporation.

In the industrial production of the herbicide glyphosate iminodiethanol acid (IDK) is transformed into N-phosphonomethyliminodiacetic acid (FMEC) by reaction with hydrochloric acid (HCl), phosphoric acid (H3RHO3) and formaldehyde (CH2O) or by reaction with phosphorus trichloride (PCl3), NaOH and CH2O. From waste method at this stage is usually disposed of by loading in a deep vessel. Due to the high content of chloride and a large amount of this waste stream other, more environmentally friendly ways of waste treatment, such as oxidation wet air or thermal incineration, the economically disadvantaged. It would therefore be desirable to have a method of reducing the content causes corrosion of chloride and total hydraulic volume of waste in the waste stream FMIDS to other methods of waste disposal have become economically possible.

At present, it was found that NaCl can be effectively removed and separate from waste retrieval method f is stomatologiczny acid (FMEC) by neutralization of the waste stream NaOH and crystallization by evaporation. The present invention relates to a method for the removal and excretion of NaCl from the waste stream method of obtaining FMEC, which includes the neutralization of the waste stream NaOH to a pH of about 7 by evaporation of water at atmospheric or lower pressure, at a temperature of from 40 to 130°until then, until you fall NaCl precipitate, filtering the precipitate at a temperature of from 35 to 110°and washing the precipitate with a saturated solution of salt. Because it is obvious that the concentration of sodium salts of other compounds in the flow of neutralized waste lowers the solubility of NaCl in the matrix, NaCl can be deleted and select from the waste stream method of obtaining FMEC with a surprisingly high degree of separation and purity.

The flow of waste water in the production FMEC usually can contain phosphorous acid (from 0.3 to 2 mass%), phosphoric acid (0.3 to 3 mass%), HCl (from 9 to 15 mass percent), iminodiethanol acid (IDK; from 0.1 to 0.3 mass%), FMEC (from 0.8 to 4 mass%), N-methyliminodiacetic acid (Novocherkassk Museum; from 0.5 to 8 mass percent), and small quantities of methanol, formaldehyde and formic acid.

In the first stage of the method of removal and excretion of NaCl flow of waste water FMEC neutralize NaOH to a pH of about 7, so that all organic and inorganic acids, including HCl, transformed the into the corresponding sodium salt, NaCl and water. In order to minimize the total hydraulic load, it is preferable to carry out the neutralization of relatively concentrated solutions of NaOH. To neutralize the preferred commercially available 50% NaOH. The heat of neutralization significantly raises the temperature of the neutralized mixture to crystallization by evaporation.

After neutralization of the water removed from the neutralized mixture until then, until you fall precipitate NaCl. The water is evaporated at atmospheric or lower pressure at a temperature of from 40 to 130°C, preferably at a temperature of from 60 to 100°C. the Evaporation continues until, until you precipitate a large part of NaCl, but not to such an extent that when the suspension becomes difficult to handle when the foaming becomes excessive or when the subsequent filtrate becomes too viscous. As a rule, from the neutralized mixture is evaporated amount of water equivalent to from 35 to 70 mass%, preferably from 50 to 65 mass%. Naturally, the number of remote water will vary depending on the initial concentration of the neutralized stream waste concentration used to neutralize the base. The exact amount of water that must be removed can be easily optimized by conventional experimental the tests with specific processed by the waste stream. For evaporation possible a wide range of operating conditions based on thermal stability of the components of the waste stream and limitations on pressure-related equipment. Water vapor this way you can condense for a potential return in the loop.

After crystallization by evaporation of NaCl are filtering. Due to the viscosity of the filtrate filtration is carried out at a temperature of from 35 to 110°preferably at a temperature of from 60 to 90°C. the Driving force for filtration can be gravity, pressure from above is applied from below the vacuum or centrifugal force. NaCl is isolated in the form of cakes on the filter. Volume flow of waste water, now presents the filtrate, substantially less and deleting the most part contained chlorides easier for other waste treatment options, in addition to the load in a deep reservoir, such as oxidation wet air or burning.

At the last stage of the way the cake NaCl on the filter is washed with saturated salt solution to remove residual filtrate. Despite the fact that the concentration of the salt solution is not critical, because the salt flush, you can re-return into the cycle in the flow of neutralized waste, the use of dilute salt solution leads to the dissolution of the precipitate salts, and the use of nasusunog the solution of salt leads to discarding additional NaCl from the salt solution by means of vysalivaniya", due to components containing sodium salt, replaced with a wash solution to the filtrate. Preferably, the concentration of NaCl in the wash solution of salt was the same as in the filtrate. Despite the fact that the temperature at the stage of washing is not critical, viscous residual filtrate in the cake on the filter can be removed more effectively by washing at elevated temperatures, for example from about 35 to 60°C.

The invention is illustrated by the following examples.

Examples

1. A 3-necked 250-millilitre (ml) flask equipped with a lateral throat, water cooled refrigerator and sink, a blade stirrer with adjustable speed and thermoproteales with a heating jacket with temperature control and is equipped with a controlled source of vacuum, 100 grams (g) of the brine process of obtaining FMEC, comprising 0.3% of IDK, 6.7% of the Novocherkassk Museum, 3.8% OF FMEC, 10.1% of HCl, 1.8% Of N3RHO3and 2.2% N3PO4neutralized to pH 6,97 action 41,2 g 50% NaOH. After sampling 135,3 g neutralized brine was evaporated at atmospheric pressure prior to the removal of 74.5 g of water and the precipitated NaCl. The suspension was filtered under vacuum through a large filter of melted glass and washed the cake on the filter 20 g of saturated salt solution, getting 13.5 g wet white precipitate weighing after drying of 12.0 g of Dry residue definition is ranged as containing 99.8% of NaCl. Viscous filtrate contained 15.0% Novocherkassk Museum, 8,9% FMIDS and 6.5% NaCl, which is estimated corresponds to 9.2% of the chloride in the original solution.

2. In the apparatus, similar to, but larger in size than the one described in example 1, 466 grams (g) of the brine process of obtaining FMEC, including 0,15% IDK 0.8% of the Novocherkassk Museum, 3,0% FMEC, 15,9% HCl and an indefinite number of N3RHO3and H3PO4neutralized to pH 6.8 by the action of 217 g of 50% NaOH. A portion of this neutralized brine in the amount of 450 g was evaporated at 210 mm RT. Art. (27 kPa) and the final temperature of the tank 96°to delete 273 g of water and the precipitated NaCl. Suspension (177 g) was filtered under vacuum through a large filter of melted glass and washed the cake on the filter 56 g of 25.7% NaCl, getting after drying 81 g of off-white precipitate salt. In dry sediment was determined to 98.5% NaCl, and it still contained 1.1% of FMIDS. Viscous filtrate contained 9.1% of FMIDS and 3.0% NaCl, which is estimated corresponds to 1.9% of the chloride in the original solution.

1. The method of removal and excretion of NaCl from the waste stream method of obtaining N-phosphonomethyliminodiacetic acid (FMEC), characterized in that the waste stream is neutralized with NaOH to a pH of about 7, is evaporated from the stream neutralized waste water at atmospheric or lower pressure, at a temperature of from 40 to 130°until then, until precipitation of NaCl, filtered precipitate pace is the atur from 35 to 110° For the allocation of NaCl from the filtrate and washed with NaCl saturated solution of salt.

2. The method according to claim 1, in which the water is evaporated at a temperature of from 60 to 100°C.

3. The method according to claim 1 or 2, in which the NaCl is filtered at a temperature of from 60 to 90°C.

4. The method according to any of the preceding paragraphs, in which NaCl was washed with saturated salt solution at a temperature of from about 35 to about 60°C.

5. The method according to any of the preceding paragraphs, in which the NaCl concentration in the washing solution of salt is approximately the same as in the filtrate.

6. The method according to any of the preceding paragraphs, in which the wash a saturated solution of salt in return loop in the flow of neutralized waste.

7. The method according to any of the preceding paragraphs, in which the filtrate is further treated by air oxidation or burning.



 

Same patents:

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to the improved method for preparing N-phosphonomethylglycine. Method involves interaction of derivative of hexahydrotriazine of the formula (II):

wherein X represents CN, COOZ, CH2OY and others; Z and Y represent hydrogen atom and others with triacylphosphite of the formula: P(OCOR3)3 (III) wherein R3 means (C1-C18)-alkyl or aryl that can be substituted. The prepared product is hydrolyzed and (if X represents CH2OY) oxidized. The proposed method is a simple in realization, economy and provides high degree of the end product purity.

EFFECT: improved preparing method.

19 cl, 11 ex

FIELD: organophosphorus compounds, medicine.

SUBSTANCE: invention relates to new biologically active phosphonate compounds. Invention describes phosphonate compound of the formula:

wherein R1 and R'1 represent independently hydrogen atom (-H) substituted possibly with -O-(C1-C24)-alkyl, -O-(C1-C24)-alkenyl, -O-(C1-C24)-acyl, -S-(C1-C24)-alkyl, -S-(C1-C24)-alkenyl or -S-(C1-C24)-acyl wherein at least one among R and R'1 doesn't represent -H and wherein indicated alkenyl or acyl comprise from 1 to 6 double bonds; R2 and R'2 represent independently -H substituted possibly with -O-(C1-C7)-alkyl, -O-(C1-C7)-alkenyl, -S-(C1-C7)-alkyl, -S-(C1-C7)-alkenyl, -O-(C1-C7)-acyl, -S-(C1-C7)-acyl, -N-(C1-C7)-acyl, -NH-(C1-C7)-alkyl, -N-((C1-C7)alkyl)2, oxo-group, halogen atom, -NH2, -OH or -SH; R3 represents phosphonate derivative of nucleoside or biphosphonate; X represents compound of the formula:

L represents a valence bond or a bifunctional binding molecule of the formula: -J-(CR2)t-G- wherein t is a whole number from 1 to 24; J and G represent independently -O-, -S-, -C(O)O- or -NH-; R represents -H, unsubstituted or substituted alkyl or alkenyl; m means a whole number from 0 to 6; n = 0 or 1. Also, invention describes pharmaceutical compositions comprising phosphonate compounds, method for treatment of osteoporosis in mammal, method for increasing mineral osseous density, method for prophylaxis of apoptosis of osteoblasts and osteocytes in mammal, method for treatment of viral infection in mammal, method for treatment of growing neoplasm in mammal and method for proliferation of cells. Invention provides preparing new compounds eliciting useful biological properties.

EFFECT: valuable medicinal properties of phosphonate compounds.

17 cl, 2 dwg, 7 tbl, 21 ex

The invention relates to new and nitrate salts of compounds of formulas (I) to(VI), which can be used in medicine for the treatment of bone disorders such as abnormalities in bone and joints

New drug substances // 2237657
The invention relates to organic chemistry and can find application in medicine

New drugs // 2237057
The invention relates to organic chemistry and can find application in medicine

The invention relates to a method for dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(II) ammonium, which is as follows: dehydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(II) ammonium is produced by crystallization from a solution prepared by mixing the spent solution from the etching of printed circuit boards containing copper(II) and ammonia or ammonium salts, and 1-hydroxyethane-1,1-diphosphonic acid in an amount to provide a molar ratio of copper(II):1-hydroxyethane-1,1-diphosphonic acid 1.0:(2,0-4,0), and having a pH value preferably of 2.0 to 3.5

The invention relates to chemical technology of organophosphorus substances that can be used to prepare electrolyte galvanic and chemical abaltimore, as well as receive other organophosphorus substances, used as fertilizers in agriculture

The invention relates to the field of chemistry of organophosphorus compounds, in particular to an improved method for producing trinational the salt postemergency acid uranyl, which is carried out by reaction of sililirovanie phosphorous acid hexamethyldisiloxane taken at 1.5 to 2.5-fold excess of the stoichiometric required to monochloramine, subsequent similarobama and alkylation of intermediate reaction products undergo simultaneous introduction into the reaction mass hexamethyldisilazane in number, comprising 75-95% of the stoichiometric required, and alkylphosphonate, and saponification of Trevira postemergency acid is carried out in two stages, with the first stage using 20-70% stoichiometric alkali necessary, and the remaining amount of alkali - second stage

The invention relates to a method for producing bis(1-hydroxyethane-1,1-diphosphonate(1-)) copper(II), which relates to chemical technology of organophosphorus substances

The invention relates to derivatives of phosphinic and phosphonic acids of the formula (I)

where R1means unsubstituted or substituted phenyl, -O-(C1-C6)-alkyl, R2means hydrogen, RR3mean hydrogen, alkyl, unsubstituted or substituted phenyl, COOH group or - (CH2)2-CH(COOH)-NH-SO2-C6H4-C6H4-Cl(n), t stands for an integer of 1-4, And is a covalent bond, X is a group-CH=CH -, - group,- (CH2)about- where is 0,1,2 or 3, Y1and Y2mean-OH, -(C1-C4)-alkyl, -O-(C1-C4)-alkyl, and/or their stereoisomeric forms and/or physiologically acceptable salts

FIELD: industrial and municipal systems of water heating; equipment of industrial and municipal water heating systems water purification from the gasses dissolved in it.

SUBSTANCE: the invention presents a device for the hot water degassing in the systems of water heating, that may be used in industrial and communal heating systems. The device for degassing of the hot water in a water heating system contains an accumulating container with the liquid level signaling tool and with a branch pipe for delivery of the degassed water to consumers, the branch pipes for feeding the water for degassing and for withdrawal of the air-steam mixture, a drain line in the accumulating container, the chiller of the air-steam mixture, the systems of degassing and suction of the air-steam mixture, the first and the second ejectors of the different productivity. At that each of them has its own press pump, The press pump of the first ejector of the greatest productivity is made regulated. The first and the second ejectors are capable to form the high-speed streams including the supersonic streams. The system of suction of the air-steam mixture is formed by the second ejector with the press pump and the chiller of the vented steam, which is made in the form of a heat exchanger preheating the water being added in the water heating system after its passing through the consumers for maintenance of the level of the water in the accumulating container controlled by the signaling device. The degassing system is formed by the first ejector, a branch pipe of water delivery for degassing from consumers to the first ejector, a branch pipe of withdrawal of the air-steam mixture connecting the zones of rarefaction of the first and the second ejectors, a sink main additionally equipped with a screen into the accumulating container of the degassed water from the first ejector. The branch pipe of water delivery for degassing is equipped with an adjustable press pump of the first ejector, which is installed for maintenance of a constant pressure drop on the first ejector. The branch pipe of feeding of the degassed water to consumers is additionally equipped with mounted in series follow-up arranged in succession by a pumping station with the controlled productivity directly depending on the level of liquid in the accumulating container, determined by the signaling system, and the hot-water heater. The chiller of the vented steam is additionally equipped with a drain branch pipe discharging the excesses of water accumulated in the chiller of the vent steam in the water added in a heating system. The technical result of the given invention is creation of the power saving, effectively operating device for degassing of the hot water in the heating system, increasing alkalinity of the water, destroying a biological component, economically consuming the heat accumulated by the chillers of the vent steam, equipped with the structural members for removal of the solid fractions formed in the process of heating the water.

EFFECT: the invention ensures creation of the power saving, effectively operating device for degassing of the hot water in the water heating system.

1 dwg

FIELD: industrial and municipal systems of hot water supply; devices for hot water purification from the gasses dissolved in it.

SUBSTANCE: the invention is pertaining to the methods and equipment for hot water degassing in the systems of hot water supply and may be used in industrial and municipal systems of hot water supply. The device for degassing of the hot water in the hot water supply system contains: an accumulating container with the liquid level signaling tool and with a branch pipe for delivery of the degassed water to consumers, the branch pipes for feeding the water for degassing and for withdrawal of the air-steam mixture, a drain line in the accumulating container, a chiller of the air-steam mixture, the systems of degassing and suction of the air-steam mixture, the first and the second ejectors of the different productivity. At that each of them has its own press pump and the press pump of the first ejector having the greatest productivity is made controlled. The first and the second ejectors are capable to form the high-speed streams including the supersonic streams. The system of suction of the air-steam mixture is formed by the second ejector with the press pump and the chiller of the vented steam, which is made in the form of a heat exchanger preheating the water being added in the hot water supply system after its passing through the consumers for maintenance of the level of the water in the accumulating container determined by the signaling device. The degassing system is formed by the first ejector, a branch pipe of water delivery to the first ejector for degassing, a branch pipe of withdrawal of the air-steam mixture connecting the zones of rarefaction of the first and the second ejectors, a main of sink into the accumulating container of the degassed water from the first ejector. The branch pipe of water delivery for degassing is equipped with a controlled press pump of the first ejector and with an in parallel to it located pressure control valve, which are installed for maintenance of a constant pressure drop on the first ejector. The branch pipe of feeding of the degassed water to consumers is additionally equipped with a pumping station with the controlled productivity, that is directly depending on the level of the liquid in the accumulating container, determined by the signaling device. The accumulating container is additionally equipped from beneath with the system for the solid fractions removal. The technical result is creation of the power saving, device for degassing of the hot water in the system of hot water supply, increasing alkalinity of the water, destroying a biological component, economically consuming the heat accumulated by the chiller of the vent steam, equipped with the structural members for removal of the solid fractions formed in the process of the water heating.

EFFECT: the invention ensures creation of the power saving and effectively operating device for degassing of the hot water in the hot water supply system.

23 cl, 1 dwg

FIELD: chemical industry; extraction of perchlorate-ion from a highly-concentrated industrial solution of a complex salt composition.

SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular to extraction of perchlorate-ion from a highly-concentrated industrial solution of a complex salt composition. The solution containing perchlorate ion gate through a high-basic anionite in the nitrate form. Anionite recovery is realized in a water solution of alkaline nitrate or alkaline earth metal with concentration from 1 mass % up to concentration of saturation at the temperature of 0-60°C. After recovery the anionite flush with water for reuse. At absence of the industrially produced anionite in the nitrate form it may be gained by keeping in a water solution of nitrate of an alkaline metal of a high-basic anionite in chloride or basic (OH) form. The invention allows to increase efficiency of sorption extraction of perchlorate-ion.

EFFECT: the invention ensures increased efficiency of sorption extraction of perchlorate-ion.

9 cl, 4 tbl, 13 ex

FIELD: war materiel and chemical industry.

SUBSTANCE: proposed method is based on use of sorbent-catalyst whose base is made from cereals husk with oxidizing agents in form of metallurgical sludge in solution of ortho-phosphoric acid applied over husk.

EFFECT: enhanced ecological situation; enhanced efficiency of detoxicant of soils and water media contaminated with spilled heptyl.

2 tbl

Filtration device // 2262976

FIELD: water filtration.

SUBSTANCE: invention can be used in liquid filters, mainly, jug-type filters for cleaning drinking water. Proposed filtration device consists of housing filled with filtering material and provided with at least one outlet hole in base, cover with holes to let in water and let out air, and at least one locking device arranged between housing and cover. Said locking is furnished with at least one valve.

EFFECT: improved reliability and service characteristics of device.

15 cl, 7 dwg

FIELD: methods of sewage purification.

SUBSTANCE: the invention is pertaining to a method of sewage purification. Before feeding of the sewage into a prepit it is passing through a placed in the crossway direction lattice for trapping the floating refuse and through a located in the prepit floating bon made from the oil products sorbing material and having an arch-shaped form. After a gating the water through a section with the highest water greenery the water passes through a mobile filter with a sorbent loading to provide a possibility of sorption during a non-vegetable season of biogenous matters and heavy metals. The depth of the prepit is exceeding the average depth of the water reservoir for settling of the large suspended matters and drift. The technical effect is an increased efficiency of purification due to a possibility to conduct it in extreme conditions (flooding of great volumes of oil products and other contaminants at accidents on roads and bridges), and also in spring-winter conditions (non-vegetative period).

EFFECT: the invention ensures an increased efficiency of purification conducted in usual and in extreme conditions.

2 cl, 2 dwg

FIELD: methods of sewage purification.

SUBSTANCE: the invention is pertaining to a method of sewage purification. Before feeding of the sewage into a prepit it is passing through a placed in the crossway direction lattice for trapping the floating refuse and through a located in the prepit floating bon made from the oil products sorbing material and having an arch-shaped form. After a gating the water through a section with the highest water greenery the water passes through a mobile filter with a sorbent loading to provide a possibility of sorption during a non-vegetable season of biogenous matters and heavy metals. The depth of the prepit is exceeding the average depth of the water reservoir for settling of the large suspended matters and drift. The technical effect is an increased efficiency of purification due to a possibility to conduct it in extreme conditions (flooding of great volumes of oil products and other contaminants at accidents on roads and bridges), and also in spring-winter conditions (non-vegetative period).

EFFECT: the invention ensures an increased efficiency of purification conducted in usual and in extreme conditions.

2 cl, 2 dwg

FIELD: chemical industry; methods of active control of parameters of a liquid treatment electrochemical process.

SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to an electrolytic treatment of a liquid, for example water, with ions of a metal, mainly silver. The offered method of active control is based on the choice of the original timing and the current of a liquid treatment in compliance with Faraday's laws. After beginning of the treatment process conduct a measurement of the speed of the change of voltage on the electrodes which acts as a complex index mirroring the change of electrical conductance of the liquid between the electrodes at its treatment with ions of a metal. The indicated index depends on parameters of the treated water and is proportional to productivity of the electrolyzer by a mass of the dissolved metal per a unit of time. Depending on the value and the sign of the voltage change speed conduct a correction of the current of the electrolyzer and-or the time of treatment and seek a stability of the produced concentration of ions of silver in the water. The technical result is simplification of the process of the active control at the expense of exclusion of multiple sensors as well as operations of the regular gauging and maintenance of the ions selective sensor under condition of maintenance of stability of the achieved level of concentration of a metal ions in the liquid.

EFFECT: the invention ensures simplification of the process of the active control, stability of the achieved level of concentration of a metal ions in the liquid.

FIELD: methods of a pyrolysis of hydrocarbon raw.

SUBSTANCE: the invention is pertaining to the processes of a pyrolysis of hydrocarbon raw with a recycling of the waste condensation moisture and may be used at production of a steam of a dilution from the waste water condensate. Conduct a pyrolysis of hydrocarbon raw. The polluted condensate expose to 3-stage physical and chemical treatment. Purification of the condensate from dispersible impurities is conducted by their settling with the help of mineral coagulants on the basis of hydrolyzed salts of iron and aluminum in a combination with additives of flocculants and alkali. Then the condensation moisture is exposed to adsorption purification from of light hydrocarbons using a direct steam. Conduct afterpurification from the dissolved hydrocarbons by filtrating through active coals. At the stage of production of the steam a steam generator boiler water is added with dozed phosphates with concentration of 0.2-2 mg/l and carry out blowing of the water within the limits of 2-5 %. The technical result of the invention is decreased material inputs, increased efficiency of water purification, averting of a coking up of the equipment.

EFFECT: the invention ensures decreased material inputs, increased efficiency of water purification, averting of a coking up of the equipment.

1 tbl, 4 ex

FIELD: methods of a pyrolysis of hydrocarbon raw.

SUBSTANCE: the invention is pertaining to the processes of a pyrolysis of hydrocarbon raw with a recycling of the waste condensation moisture and may be used at production of a steam of a dilution from the waste water condensate. Conduct a pyrolysis of hydrocarbon raw. The polluted condensate expose to 3-stage physical and chemical treatment. Purification of the condensate from dispersible impurities is conducted by their settling with the help of mineral coagulants on the basis of hydrolyzed salts of iron and aluminum in a combination with additives of flocculants and alkali. Then the condensation moisture is exposed to adsorption purification from of light hydrocarbons using a direct steam. Conduct afterpurification from the dissolved hydrocarbons by filtrating through active coals. At the stage of production of the steam a steam generator boiler water is added with dozed phosphates with concentration of 0.2-2 mg/l and carry out blowing of the water within the limits of 2-5 %. The technical result of the invention is decreased material inputs, increased efficiency of water purification, averting of a coking up of the equipment.

EFFECT: the invention ensures decreased material inputs, increased efficiency of water purification, averting of a coking up of the equipment.

1 tbl, 4 ex

FIELD: industrial and municipal systems of water heating; equipment of industrial and municipal water heating systems water purification from the gasses dissolved in it.

SUBSTANCE: the invention presents a device for the hot water degassing in the systems of water heating, that may be used in industrial and communal heating systems. The device for degassing of the hot water in a water heating system contains an accumulating container with the liquid level signaling tool and with a branch pipe for delivery of the degassed water to consumers, the branch pipes for feeding the water for degassing and for withdrawal of the air-steam mixture, a drain line in the accumulating container, the chiller of the air-steam mixture, the systems of degassing and suction of the air-steam mixture, the first and the second ejectors of the different productivity. At that each of them has its own press pump, The press pump of the first ejector of the greatest productivity is made regulated. The first and the second ejectors are capable to form the high-speed streams including the supersonic streams. The system of suction of the air-steam mixture is formed by the second ejector with the press pump and the chiller of the vented steam, which is made in the form of a heat exchanger preheating the water being added in the water heating system after its passing through the consumers for maintenance of the level of the water in the accumulating container controlled by the signaling device. The degassing system is formed by the first ejector, a branch pipe of water delivery for degassing from consumers to the first ejector, a branch pipe of withdrawal of the air-steam mixture connecting the zones of rarefaction of the first and the second ejectors, a sink main additionally equipped with a screen into the accumulating container of the degassed water from the first ejector. The branch pipe of water delivery for degassing is equipped with an adjustable press pump of the first ejector, which is installed for maintenance of a constant pressure drop on the first ejector. The branch pipe of feeding of the degassed water to consumers is additionally equipped with mounted in series follow-up arranged in succession by a pumping station with the controlled productivity directly depending on the level of liquid in the accumulating container, determined by the signaling system, and the hot-water heater. The chiller of the vented steam is additionally equipped with a drain branch pipe discharging the excesses of water accumulated in the chiller of the vent steam in the water added in a heating system. The technical result of the given invention is creation of the power saving, effectively operating device for degassing of the hot water in the heating system, increasing alkalinity of the water, destroying a biological component, economically consuming the heat accumulated by the chillers of the vent steam, equipped with the structural members for removal of the solid fractions formed in the process of heating the water.

EFFECT: the invention ensures creation of the power saving, effectively operating device for degassing of the hot water in the water heating system.

1 dwg

Up!