Method of degassing and dehydration of oil and separator for its implementation

 

The invention relates to the oil industry and can be used in the oil industry for the preparation of oil and produced waste water treatment. Improves the efficiency of the separation process gazoochistnoe emulsion and reduce energy consumption. The inventive degassing and dehydration of oil is carried out in two-piece separator with heating. Enter gazoochistnoe emulsion perform in the first section of the separator, and the heating in the second. In the first section of the produce Department from oil free gas and free water, the second section is separated from the oil dissolved gas and emulsified water. Report of the first and second sections of the separator through two partitions. The first partition is perforated at the top and installed with a gap to the lower generatrix of the body of the separator. The second partition is perforated in the upper part to a lower height and set with a large gap to the lower generatrix of the body of the separator than the first partition, and partially perforated at the bottom. From top to provide flow of gas from the first and second sections in the space between the partitions through the perforations of the first and second partitions. Provide the and, through the gap between the partition and the second partition. Ensuring the passage of water underneath the first and second partition. In the heating section organizes the movement of the partial mixture along the separator and vertical motion from the center to the walls of the housing of the separator. The selection of the separated gas is performed between the partitions, the selection of water - in the second section near the walls, the selection of oil in the second section. The device includes a horizontal body, a heater, a transverse perforated partition, settling section, the section of the heat pipe input gazoochistnoe emulsion, o gas, water and oil. Socket input gazoochistnoe emulsion placed in the first section of the separator, a heater placed in the Central part of the second section of the separator - heating section. The heater is made in the form of at least two placed one above the other rows of parallel pipes connected on the ends of the horizontal collectors. The top of the horizontal collectors connected to the pipe input carrier, the bottom of the horizontal collectors connected to the pipe output coolant. Horizontal collectors neighbouring height of the rows of tubes are connected to each other by, protivorechia to the output. Transverse perforated partition mounted on the first section and second sections of the separator. The nozzle of the gas outlet located above the partitions. Pipe water outlet is placed in the second section near the walls. Pipe output of oil placed at the end of the second section. 2 S. and 4 C.p. f-crystals, 5 Il.

The invention relates to the oil industry and can be used in the oil industry for the preparation of oil and produced waste water treatment.

There is a method of separation of two immiscible liquids, mainly water and oil, including the flow in the separation capacity of water and oil, then the original mixture, exposure and release of split products (RF Patent 1805991, publ. 30.03.93).

The known method is time-consuming and does not provide a high efficiency of separation process gazoochistnoe emulsion.

Known method of separation of production wells, including the input of gazoochistnoe mixture into a functional unit, the selection of the separated free gas, dehydrated carbonated oil processing pressure drop soda produced water by passing it through a nozzle simultaneously with bringing her to the top of the sump and the drain of plastifoam it is difficult to implement due to the need to apply pressure drop and does not provide a high efficiency of separation process gazoochistnoe emulsion.

Closest to the invention to the technical essence is the way demulsification gazoochistnoe emulsion, including filing gazoochistnoe emulsion under heating device of the heating compartment separator, heating, destruction and enlargement of the globules of oil and water, degassing, the exhaust gas flow neptunomonas mixture through and through the perforated partitions and distributor in the settling compartment, a final separation of oil and water, oil extraction and water (USSR Author's certificate 709113, publ. 15.01.80 - prototype).

The known method does not provide high efficiency of the separation process gazoochistnoe emulsion has a high energy consumption.

In the proposed invention solves the problem of increasing the efficiency of the separation process gazoochistnoe emulsion and reduce energy costs.

The task is solved in that in the method of degassing and dehydration of oil, including gravity separation gazoochistnoe emulsion in a two-piece separator with heating, according to the invention the input gazoochistnoe emulsion perform in the first section of the separator, and the heating in the second, the first section of the produce Department from oil free gas and free water, W is the section of the separator through two partitions, the first of which is perforated at the top and installed with a gap to the lower generatrix of the body of the separator, and the second perforated in the upper part to a lower height and set with a large gap to the lower generatrix of the body of the separator than the first partition, and partially perforated at the bottom, top to provide flow of gas from the first and second sections in the space between the partitions through the perforations of the first and second partitions, ensuring the passage of oil from the first section to the second from the top through the perforations of the first partition, through the gap between the partition and the second partition, ensuring the passage of water underneath the first and second partition, in the heating section organizes the movement of the partial mixture along the separator and circulation in the vertical plane, the selection of the separated gas is performed between the partitions, the selection of water - in the second section near the walls, the selection of oil in the second section.

Degassing and dehydration of oil addition is carried out in at least one additional separator having one heating compartment, to a temperature greater than in the previous separator.

Degassing and amaswazi and heating, to the temperature in each subsequent section more than in the previous.

Heating a partial mixture at the last stage is carried out using heated outside separator coolant, as in the previous steps, the flow of oil, water or brine, followed separator or the subsequent section of the separator.

Known installation for demulsification of oil, comprising a horizontal casing, a heater, a transverse partition, a vertical partition, not reaching to the top and bottom of the casing, provided with overflow visor, settling chamber, a heating chamber, a pipe entering gazoochistnoe emulsion and withdrawal of gas, water and oil (USSR Author's certificate 747490, publ. 15.07.80).

Known device does not provide a high efficiency of separation process gazoochistnoe emulsion has a high energy consumption. The apparatus has a small turnaround time and high fire danger.

Closest to the invention to the technical essence is a device for demulsification gazoochistnoe emulsion (separator), comprising a horizontal casing, a heater, a transverse perforated partition, not to the point alternately to the top and bottom of the hull, sucky camera, camera is 709113, publ. 15.01.80 - prototype).

Known apparatus does not provide a high efficiency of separation process gazoochistnoe emulsion has a high energy consumption. The apparatus has a small turnaround time and high fire danger.

In the proposed invention solves the problem of increasing the efficiency of the separation process gazoochistnoe emulsion, reduce energy costs, increase turnaround time and reduce fire hazard.

The task is solved in that the separator for degassing and dehydration of oil, comprising a horizontal casing, a heater, a transverse perforated partition, settling section, the section of the heat pipe input gazoochistnoe emulsion, o gas, water and oil, according to the invention the connection of the input gazoochistnoe emulsion placed in the first section of the separator, a heater placed in the second section of the separator, the heater is made in the form of at least two placed one above the other rows of parallel pipes connected on the ends of the horizontal collectors, the upper horizontal collectors connected to the pipe input carrier the bottom of the horizontal collectors connected to the pipe output carrier, horizon is s for input and output coolant, the tubes in each row are installed with a slope from the inlet manifold to the outlet, the partition of the first and second sections of the separator mounted transverse perforated partition, the first of which is perforated at the top and installed with a gap to the lower generatrix of the body of the separator, and the second perforated in the upper part to a lower height and set with a large gap to the lower generatrix of the body of the separator than the first partition, and partially perforated at the bottom, the outlet of the gas outlet located in the upper part between the partitions, pipe water outlet is placed in the second section near the walls, pipe output of oil placed at the end of the second section.

The essence of the invention When degassing and dehydration of oil spend gravity separation gazoochistnoe emulsion in a two-piece separator with heating. It is not always possible to ensure the high efficiency of the separation process gazoochistnoe emulsion. Used vehicles have a low turnaround time and high fire danger.

In the proposed invention solves the problem of increasing the efficiency of the separation process gazoochistnoe emulsion, reduce energy costs, increase mirami section of the separator, and heating the second. In the first section of the produce Department from oil free gas and free water, the second section is separated from the oil dissolved gas and emulsified water. This reduces the energy consumption for heating, because of the heat eliminates preheating free gas and free water (heat capacity of water is 2 times more heat oil), i.e., heat up oil, dissolved gas and emulsified water.

Provide communication between the first and the second section of the separator through a transverse perforated partition, the first of which is perforated at the top and installed with a gap to the lower generatrix of the body of the separator, and the second perforated in the upper part to a lower height and set with a large gap to the lower generatrix of the body of the separator than the first partition, and partially perforated at the bottom. From top to provide flow of gas from the first and second sections in the space between the partitions through the perforations of the first and second partitions, ensuring the passage of oil from the first section to the second from the top through the perforations of the first partition, through the gap between the partition and the second partition, obespechivayuschego increases the stability of the separator due to the exclusion of "locking" the flow of oil when the water level in the separator above the optimal value. At the same time it increases the degree of uniformity of distribution of the flow of oil through the cross section of the separator in the gap between the water level and the top of the perforation holes. In the absence of perforation uneven flow in this case is caused by errors in manufacturing and Assembly of the separator, which are inevitable in practice.

Perforation of the upper part of the first and second partitions promotes the separation of liquid from gas by increasing the degree of uniformity of the velocity field of the gas flow along the cross-section of the separator.

In the heating section is heated partial mixture from the walls of the tubes of the heater. The carrier can serve as water, antifreeze, thermal oil, dehydrated oil or water with the following degrees of separation gazoochistnoe emulsion, etc., Organize the movement of the partial mixture along the separator and circulation in the vertical plane. This increases the heat transfer and facilitates the separation of a mixture of gas, water and oil. Due to the replacement of the heat carrier furnace gas (in the prototype) on the used fluids are able to reduce the Flammability of the separator and to increase the turnaround time of 3-4 months to 2 years or more.

The selection of the separated gas perform between partitions provide is of Gorodok, i.e., in place of the most intensive approach of water from two sections. The selection of oil perform in the second section - end-point separation.

In Fig. 1 shows a separator for degassing and dehydration of oil, longitudinal section; Fig. 2 - the first transverse perforated partition; Fig. 3 - second transverse perforated partition, Fig. 4 - scheme of separation with two-stage heating, and Fig. 5 - scheme of separation with three-stage heating.

Separator for degassing and dehydration of oil (Fig. 1) contains a horizontal housing 1 is divided into the first settling section 2 and the second heating section 3 of the first 4 and second 5 perforated partitions. The first perforated wall 4 (Fig. 2) are perforated in the upper part of the height h1and installed with clearance to the bottom forming body separator 1 height h2. The second perforated wall 5 (Fig. 3) perforated in the upper part of the height h3and from the bottom to a height of h4and installed with clearance to the bottom forming body separator 1 height h5. The separator is equipped with a heater 6, is placed in the Central part of the second section 3. Socket input gazoochistnoe emulsion 7 is placed in the first settling section is grave 3 in the vicinity of the partition 5, the connection of the output of the oil 10 is placed at the end of the second heating section 3. The heater 6 is made in the form of at least two placed one above the other rows of parallel tubes 11 and 12, joined at the ends of the horizontal manifolds 13, 14, 15 and 16. The top of the horizontal collectors 13 connected to the pipe input carrier 17. The bottom of the horizontal reservoir 14 is connected to pipe the output of the carrier 18. Horizontal collectors 15 and 16 adjacent the height of the rows of tubes 11 and 12 are connected to each other by a pipe 19 from the side opposite to the nozzles to input 17 and output of the carrier 18. Pipes 11 and 12 in each row are installed with a slope from the inlet manifold 13 to the outlet 14.

The separator operates as follows.

Through pipe input gazoochistnoe emulsion 7 in the first settling section 2 serves getvolumepathnamew emulsion. In the first settling section 2 at an initial temperature of gazoochistnoe emulsion allocated free gas and free water. The gas rises to the upper part of the housing of the separator 1 and accumulates in volume over the first 4 and second 5 perforated partitions. Water whose density exceeds the density of the oil is lowered into the lower part of the housing of the separator 1. The communication between the regardto 4, passes through the gap between the partitions 4 and 5, through the perforated lower portion of the partition 5 and the gap between the partition 5 and the water level is supplied to the second heating section 3.

Since the height h3less than the height h1and height h5greater than height h2and there is a height h4fluid can pass from the first settling section 2 the second section of the heat 3 only under the partition wall 5 and through hole punch height h1. In the second heating section 3 is a partial mixture is heated by the heater 6. Water is the coolant. By supplying gazoochistnoe emulsion in the first settling section 2 through the pipe input gazoochistnoe emulsion 7 and oil withdrawal from the second heating section 3 through the pipe o oil 10, placed at the end of the second heating section 3, and organize the flow of fluid along the body of the separator 1. Due to the location of the heater 6 in the Central part of the second heating section 3 arrange the vertical movement of the liquid from the center up and on the inside of the separator 1 down. In the second heating section 3 is separated from the oil dissolved gas and emulsified water. When the heat decreases the solubility of gas in oil and can be extracted from it is additionally the art separator additional amount of water. Especially intense process of demulsification is on the hot surface of the heater 6. Perforation of the walls 4 and 5 in the upper part contributes to the passage of the dissolved gas from the first 2 and the second section 3 to the inlet of the gas outlet 8, is placed over the partitions 4 and 5. The gap between the partitions 4 and 5 and the bottom forming the base of the housing of the separator 1 provides the water passes from the first section 2 second 3 and of the second section 3 to the inlet water outlet 9.

Running the heater 6 in the form of at least two placed one above the other rows of parallel tubes 11 and 12, joined at the ends of the horizontal manifolds 13, 14, 15 and 16, promotes uniform distribution of heat across the second heating section 3. The connection of the upper horizontal reservoir 13 with the connection of the input carrier 17 and the bottom of the horizontal reservoir 14 with the connection of the output of the carrier 18, the horizontal connection of the collectors 15 and 16 adjacent the height of the rows of tubes 11 and 12 to each other by a pipe 19 from the side opposite to the nozzles to input 17 and output of the carrier 18 and the establishment of the pipes 11 and 12 in each row with a gradient from the inlet manifold 13 to the outlet 14 provide the coincidence of forced movement pipes PhotoVista in pipe flow. In addition, it reduces the accumulation of deposits inside the pipes and provides emptying pipes with stops, when steam cleaning and flushing of pipes during repair.

Degassing and dehydration of oil may be implemented in at least one additional separator having one heating section to a temperature higher than in the previous separator (Fig. 4), or in at least one additional separator having two heating section to a temperature in each subsequent section more than in the previous (Fig. 5). Heating separable mixtures on the last step may be accomplished using heated outside separator coolant, as in the previous steps, the flow of oil, water or brine, followed separator or the subsequent section of the separator.

The reduction of energy consumption in the process is achieved not only by reducing energy consumption for heating of free water in section 2, but also due to more efficient utilization of heat separated heated oil, heated separated water or exhaust fluid when used as a coolant at the previous stage of heating.

Examples of embodiment Example 1. Spend tentative the/sup>/t and the temperature of the inlet 15oIn the separator according to Fig. 1 to 3 as described above. Separator for degassing and dehydration of oil made of length 17750 mm, diameter 3200 mm separator Housing 1 is divided into a first settling section 2 and the second heating section 3 of the first 4 and second 5 perforated partitions. The first perforated wall 4 perforated 256 holes with a diameter of 30 mm in the upper part of the height h1=960 mm and are mounted with a gap to the lower generatrix of the body of the separator 1 of height h2=400 mm. the Second perforated wall 5 perforated holes 106 with a diameter of 30 mm in the upper part of the height h3=510 mm, perforated 128 holes with a diameter of 30 mm from the bottom to a height of h4=270 mm and are mounted with a gap to the lower generatrix of the body of the separator 1 of height h5=800 mm, the Separator is equipped with a heater 6, is placed in the Central part of the second section 3. The heater 6 is designed as two placed one above the other rows of parallel tubes 11 and 12, joined at the ends of the horizontal manifolds 13, 14, 15 and 16. The temperature in the second heating section is supported at the level of the 35oC. Through pipe input carrier 17 in the heater 6 serves coolant - heated the services performed, as explained above.

As a result of separation on the proposed technical solution, the water content in the oil is 8%, which meets the requirements for preliminary dehydration. The separator provides degassing and dehydration gazoochistnoe emulsion with a capacity of 3000 t/d. The same water content can be achieved using known separators, but with performance about 1300-1400 tpd.

Example 2. Perform degassing and deep dehydration gazoochistnoe emulsion with a water content of 15%, as in example 1, with the additional degassing and dehydration in one additional separator having only one section of the heating temperature is higher than in the previous separator. In the second separator, the oil is reheated to a temperature of 45oWith, in the first separator outlet to the heating compartment temperature equal to 25oWith in the first input section of the first separator temperature is 15oC.

The wiring diagram of the separators shown in Fig. 4.

The separator 20, made in accordance with Fig. 1, sequentially connected to the separator 21. The separator 21 is made of single-chamber with a heater 22 design, similar to the heater 6 in Fig. 1. In the separator 21 pipe wow top, pipe water outlet 26 located in the lower part. Pipe output of oil separator 10 20 connected to the pipe input gazoochistnoe emulsion 23 of the separator 21. The connection of the output of the oil separator 24 21 connected to the pipe input carrier 17 of the separator 20. The connection of the output of the carrier 18 of the separator 20 is connected to the pipeline output prepared oil. The connection of the input carrier 27 of the heater 22 of the separator 21 is connected with a supply of coolant - heated water. The connection of the output carrier 28 of the separator 21 is connected to the outlet of the coolant.

Degassing and dehydration of oil carried out as follows.

Through the connection of the output of the oil separator 10 20 connected to the pipe input gazoochistnoe emulsion 23 of the separator 21, the oil after separation in the separator 20 is served in the separator 21. Through the connection of the input carrier 27 of the heater 22 to the separator 21 serves coolant - heated water, and through the connection of the output carrier 28 divert coolant. Oil is heated in the separator 21. To make a separation of oil for gas, water and purified heated oil. The gas disperses through the nozzle of the gas outlet 25, divert water through pipe water outlet 26. Purified heated oil is directed through the pipe o nave is iwanna heated oil serves as a coolant for the heater 6. After passing through the heater 6 through the pipe the output of the carrier 18 of the separator 20, the oil is sent to the pipeline oil extraction.

As a result of separation on the proposed technical solution, the water content in oil is 0.3%, which meets the requirements for deep dehydration. The separator provides degassing and dehydration gazoochistnoe emulsion with a capacity of 3000 t/d. The same water content can be achieved using known separators, but with performance about 1300-1400 tpd.

Example 3. Perform degassing and deep dehydration gazoochistnoe emulsion with a water content of 15%, as in example 1, with the additional degassing and dehydration in one additional separator having two heating sections with a temperature greater than in the previous separator. The temperature in the second section of the second separator equal 55oWith the temperature in the first section of the second separator 35oWith the temperature in the heating section of the first separator equal 22oWith in the first input section of the first separator temperature is 15oC.

The wiring diagram of the separators shown in Fig. 5.

The separator 20, made in accordance with Fig. 1, consequently the second heater 6 in Fig. 1. In the separator 29 socket input gazoochistnoe emulsion 32 and the pipe output oil 33 placed at the ends, the gas outlet pipe 34 is placed in the upper part, the inlet water outlet 35 is placed at the bottom. Pipe output of oil separator 10 20 connected to the pipe input gazoochistnoe emulsion 32 of the separator 29. The connection of the output of the oil separator 33 29 connected to the pipe input carrier 17 of the separator 20. The connection of the output of the carrier 18 of the separator 20 is connected to the pipeline selection of prepared oil. The connection of the input carrier 36 of the heater 31 of the separator 29 is connected with a supply of coolant - heated water. The connection of the output of the carrier 37 of the heater 31 of the separator 29 is connected to the pipe input carrier 38 of the heater 30 of the separator 29. The connection of the output of the carrier 39 of the heater 30 of the separator 29 is connected to the exhaust tube of the heat carrier.

Degassing and dehydration of oil carried out as follows.

Through the connection of the output of the oil separator 10 20 connected to the pipe input gazoochistnoe emulsion 32 of the separator 29, the oil after separation in the separator 20 is served in the separator 29. Through the connection of the input carrier 36 to the heater 31 of the separator 29 serves coolant - heated Wongraven 30. Through pipe 39 divert coolant from the heater 30 of the separator 29. Oil is heated in the separator 29. To make a separation of oil for gas, water and purified heated oil. The gas disperses through the gas outlet pipe 34. Water away through the pipe 35. Through the pipe o oil 33 the heated oil is fed from the separator 29 through pipe input carrier 17 to the heater 6 and removing the cooled oil from the heater 6 through the pipe the output of the carrier 18 in the pipeline selection of prepared oil.

Thus, the oil, cleaned and heated in the separator 29, is used as a heat carrier for heating the oil in the separator 20.

As a result of separation on the proposed technical solution, the water content in oil is 0.3%, which meets the requirements for deep dehydration. The separator provides degassing and dehydration gazoochistnoe emulsion with a capacity of 3000 t/d. The same water content can be achieved by applying two known consecutive separator with the final heating temperature 55oBut with a performance of about 1300-1400 tpd.

The application of the proposed method and the device will allow to increase the efficiency of the separation process getvolumerange-top:2mm;">Claims

1. Method of degassing and dehydration of oil, including gravity separation gazoochistnoe emulsion in a two-piece separator with heating, characterized in that the input gazoochistnoe emulsion perform in the first section of the separator, and the heating in the second, the first section of the produce Department from oil free gas and free water, the second section is separated from the oil dissolved gas and emulsified water, which reported the first and second sections of the separator through two partitions, the first of which is perforated at the top and installed with a gap to the lower generatrix of the body of the separator, and the second perforated in the upper part to a lower height and set with a large gap to the lower generatrix of the body of the separator than the first partition, and partially perforated at the bottom, top to provide flow of gas from the first and second sections in the space between the partitions through the perforations of the first and second partitions, ensuring the passage of oil from the first section to the second from the top through the perforations of the first partition, through the gap between the partition and the second partition, ensure the passage of orator and circulation in a vertical plane, the selection of the separated gas is performed between the partitions, the selection of water - in the second section near the walls, the selection of oil in the second section.

2. The method according to p. 1, characterized in that the degassing and dehydration of oil addition is carried out in at least one additional separator having one section of the heating temperature is higher than in the previous separator.

3. The method according to p. 1, characterized in that the degassing and dehydration of oil addition is carried out in at least one additional separator having two sections of the heating temperature in each subsequent section more than in the previous.

4. The method according to p. 2 or 3, characterized in that the partial heating of the mixture at the last stage is carried out using heated outside separator coolant, as in the previous steps, the flow of oil, water or brine, followed separator or the subsequent section of the separator.

5. Separator for degassing and dehydration of oil, comprising a horizontal casing, a heater, a transverse perforated partition, settling section, the section of the heat pipe input gazoochistnoe emulsion, o gas, water and oil, characterized in that the nozzle of woerter, the heater is made in the form of at least two placed one above the other rows of parallel pipes connected on the ends of the horizontal collectors, the upper horizontal collectors connected to the pipe input carrier, the bottom of the horizontal collectors connected to the pipe output carrier, horizontal collectors neighbouring height of the rows of tubes are connected to each other at the side opposite the sockets for input and output of the coolant tubes in each row are installed with a slope from the inlet manifold to the outlet, the partition of the first and second sections of the separator mounted transverse perforated partition, the first of which is perforated at the top and installed with a gap to the lower generatrix of the body of the separator, and the second perforated in the upper part to a lower height and set with a large gap to the lower generatrix of the body of the separator than the first partition, and partially perforated at the bottom, the outlet of the gas outlet located in the upper part between the partitions, pipe water outlet is placed in the second section near the walls, pipe the output of oil is placed in the end of the second section.

6. The separator under item 5, characterized in that p is

 

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