CN112354262A - Single-layer cavity full-gravity-balance oil-gas-water treatment integrated device - Google Patents

Single-layer cavity full-gravity-balance oil-gas-water treatment integrated device Download PDF

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Publication number
CN112354262A
CN112354262A CN202110033235.0A CN202110033235A CN112354262A CN 112354262 A CN112354262 A CN 112354262A CN 202110033235 A CN202110033235 A CN 202110033235A CN 112354262 A CN112354262 A CN 112354262A
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cavity
oil
gas
pipe
water
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CN202110033235.0A
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CN112354262B (en
Inventor
姜传胜
裴红
李雪艳
魏光辉
王田田
何国霞
赵玉红
刘俊敏
马菲
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Senno Technology Co ltd
Suno Technology Co ltd
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Senno Technology Co ltd
Suno Technology Co ltd
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Priority to CN202110033235.0A priority Critical patent/CN112354262B/en
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Publication of CN112354262B publication Critical patent/CN112354262B/en
Priority to PCT/CN2021/140416 priority patent/WO2022151935A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D36/00Filter circuits or combinations of filters with other separating devices
    • B01D36/001Filters in combination with devices for the removal of gas, air purge systems

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses a single-layer cavity full-gravity-balance oil-gas-water treatment integrated device, and relates to the field of oil-gas-water treatment equipment. Comprises a tank body; the tank body is inclined, and the horizontal height of the front end of the tank body is higher than that of the rear end of the tank body; the front end of the tank body is provided with a first separation cavity; the first separation cavity divides the upper part and the lower part of the first separation cavity into a turn-back cavity and a missible oil cavity through a partition plate; an overflow port is arranged between the turning-back cavity and the missible oil cavity; an overflow plate is arranged on the overflow port; the rear end of the tank body is provided with an electric dehydration cavity; an electric dehydration device is arranged in the electric dehydration cavity; a heating channel is arranged below the missible oil cavity; the heating channel is communicated with the electric mop cavity; a collecting cavity is arranged between the first separation cavity and the electric dehydration cavity; the upper ends of the collecting cavity and the electric dehydration cavity are communicated through an oil outlet. Compared with the prior art, the invention has the beneficial effects that: the structure distribution and the function of each cavity are reasonably arranged, the oil-water separation flow direction is controlled through full gravity, and the integrated centralized purification treatment of oil, gas and water is realized.

Description

Single-layer cavity full-gravity-balance oil-gas-water treatment integrated device
Technical Field
The invention relates to the field of oil-gas-water treatment equipment, in particular to a single-layer cavity full-gravity-balance oil-gas-water treatment integrated device.
Background
With the continuous development of old oil fields, most of the old oil fields enter a high water content development stage, the water content of produced liquid of an oil well is continuously increased, and the water content of part of the oil well reaches more than 95 percent, so that huge pressure is brought to established gathering and transportation systems and equipment, and serious energy consumption is brought. Aiming at the problems of insufficient treatment capacity, high energy consumption for conveying and treating crude oil with high water content and the like of an existing oil and gas gathering and transferring system in an old oil field, a small-sized, intelligent and refined oil and gas water centralized purification treatment sledge is explored, and the key for solving the problems is to realize the on-site water diversion, on-site treatment, on-site external selling of crude oil and on-site reinjection of produced water of a high water content produced liquid in a well site or a metering station.
Disclosure of Invention
The invention provides a single-layer cavity full-gravity balance oil-gas-water treatment integrated device which is characterized in that the structural distribution and the functions of all cavities are reasonably arranged, the oil-water separation flow direction is controlled by full gravity, and the integrated centralized purification treatment of oil, gas and water is realized.
In order to achieve the purpose, the invention provides the following technical scheme: a single-layer cavity full-gravity balance oil-gas-water treatment integrated device comprises a tank body; the tank body is inclined, and the horizontal height of the front end of the tank body is higher than that of the rear end of the tank body; the front end of the tank body is provided with a first separation cavity; the first separation cavity divides the upper part and the lower part of the first separation cavity into an emulsion cavity and a turn-back cavity through a partition plate; an overflow port is arranged between the turn-back cavity and the missible oil cavity; the lower end of the overflow port is provided with an overflow plate; the rear end of the tank body is provided with an electric dehydration cavity; an electric dehydration device is arranged in the electric dehydration cavity; a heating channel is arranged below the emulsion cavity; the heating channel is communicated with the electric mop cavity; a collecting cavity is arranged between the first separation cavity and the electric dehydration cavity; the upper ends of the collecting cavity and the electric dehydration cavity are communicated through oil outlets.
As optimization, a splitter plate is arranged at the front end of the first separation cavity; the flow distribution plate is composed of a bending plate; the upper end of the bending plate is connected with the inner wall of the upper end of the tank body, and the lower end of the bending plate is connected with the inner wall of the bottom end of the tank body; an overflow channel is formed among the bending plate, the overflow port and the overflow plate; connecting plates are arranged at two ends of the bending plate; the upper end of the connecting plate is connected with the partition plate, and the lower end of the connecting plate is connected with the inner wall of the bottom end of the tank body; a flow guide channel is formed among the connecting plate, the partition plate and the inner wall of the tank body; a guide plate is arranged at the tail end of the guide channel; and a backflow channel is formed among the guide plate, the partition plate and the flow distribution plate.
As optimization, a flow guide cavity is formed between the bending plate and the front end of the tank body; the flow guide cavity is connected with a liquid inlet pipe; the tail end of the liquid inlet pipe extends to the bottom of the flow guide cavity and is provided with a distributor.
Preferably, the bending plate is in a U-shaped structure or V-shaped structure.
As optimization, the guide plate is of an arc-shaped structure; the two guide plates are connected in a sealing way and symmetrically distributed at the opening of the flow distribution plate.
As optimization, a first-stage coalescence plate is arranged in the flow guide channel; and a secondary coalescence plate is arranged in the backflow channel.
Preferably, the primary coalescence plate is a hydrophilic coalescence plate; the second-stage coalescence plate is an oleophilic coalescence plate.
And optimally, the flow guide channels on the two sides of the bending plate are provided with rectifiers.
And optimally, a demulsifier injection pipe is arranged at the position of the overflow plate in the missible oil cavity.
Preferably, the heating channel is arranged at the lowest end of the oil cavity, and a plurality of heaters are arranged in the heating channel.
As optimization, a second separation cavity is arranged between the first separation cavity and the collection cavity; an oil discharge pipeline is arranged in the second separation cavity; the opening end of the oil discharge pipeline is arranged upwards, and the tail end of the oil discharge pipeline is communicated with the electric dehydration cavity.
Preferably, a plurality of openings are uniformly distributed on the oil discharge pipeline positioned in the electric dehydration cavity.
As optimization, a water recovery cavity is arranged between the second separation cavity and the electric dehydration cavity; the lower end of the turning-back cavity is communicated with the water recovery cavity through a first water drainage pipe; the lower end of the second separation cavity is communicated with the water recovery cavity through a second water drainage pipe; the lower end of the electric dehydration cavity is communicated with the water recovery cavity through a third water drainage pipe.
As optimization, the oil discharge pipelines are provided with at least 2 and are uniformly distributed.
And as optimization, the first drain pipe, the second drain pipe and the third drain pipe which are positioned in the recovery water cavity are all provided with liquid level regulators.
And optimally, drain pipes are arranged at the lowest ends of the first separation cavity, the second separation cavity, the water recovery cavity and the electric dehydration cavity.
As optimization, the bottom ends of the first separation cavity, the second separation cavity, the water recovery cavity and the electric dehydration cavity are respectively provided with a drainage collecting pipe; the drainage collecting pipe is parallel to the bottom end of the tank body.
As optimization, a water cavity partition plate is arranged in the recovery water cavity; the water cavity clapboard divides the recovery water cavity into a collection water cavity and an oil-purifying water cavity which are communicated with each other at the upper part; the water collecting cavity is respectively communicated with a first water drainage pipe, a second water drainage pipe and a third water drainage pipe; an external connector is arranged above the oil-water purifying cavity, and an oil purifying pipeline is arranged on one side of the oil-water purifying cavity; the lower end of the oil purification pipeline is provided with a circulating pipeline, and the circulating pipeline is communicated with the bottom end of the water collecting cavity; one side of the clean oil pipeline is provided with a clean oil reducing pipe; an oil purifying outlet is arranged outside the oil purifying reducing pipe; the lower end of the water collecting cavity is provided with a water discharging pipeline; a water drain valve is arranged on the water drain pipeline; a floater liquid level regulator is arranged in the water collecting cavity; the float liquid level regulator is connected with the water drain valve.
As optimization, the left end of the clean oil reducing pipe is consistent with the caliber of the clean oil pipeline, the upper edge of the right end of the clean oil reducing pipe is flush with the upper edge of the clean oil pipeline, and the lower edge of the right end of the clean oil reducing pipe is of an upward inclined structure; the clean oil reducing pipe is in a reducing structure from left to right.
Preferably, the lower edge of the right end of the clean oil reducing pipe is flush with an oil-water layering interface in the clean oil water cavity.
As optimization, a gas-liquid dissolving device is arranged on a circulating pipeline at the lower end of the oil purifying pipeline; the gas-liquid dissolving device comprises a gas-liquid dissolving outer pipe and a gas-liquid dissolving inner pipe; the gas-liquid dissolving outer pipe and the gas-liquid dissolving inner pipe are both of annular structures, and the gas-liquid dissolving inner pipe is embedded in the gas-liquid dissolving outer pipe and is communicated with the gas-liquid dissolving inner pipe through a plurality of capillary connecting pipes.
As optimization, an inclined tube is also arranged; the inclined tube is sequentially provided with an upper straight tube, a middle inclined tube and a lower straight tube from top to bottom; a gas-liquid separation plate is arranged at the joint of the middle inclined pipe and the upper straight pipe; the gas-liquid separation plate can effectively reduce the liquid content in the gas. A gas-liquid connecting pipe is arranged on the middle inclined pipe below the gas-liquid separating plate; the lower end of the gas-liquid connecting pipe is communicated with the lower straight pipe; a liquid phase guide plate is arranged between the gas-liquid connecting pipe and the middle inclined pipe; and an initial inlet is arranged on the middle inclined tube.
As optimization, the lower end of the inclined pipe is communicated with a liquid inlet pipe; the upper end of the inclined pipe is communicated with a first connector on the first separation cavity and/or an external connector above the clean oil water cavity.
Preferably, the highest part of the first separation cavity is provided with a cyclone.
Compared with the prior art, the invention has the following beneficial effects: the device has characteristics such as low energy consumption, miniaturization, intellectuality, become more meticulous, carries out baffling circulation preliminary treatment in the front end through the device, and it is long when improving the oil water treatment, structure cooperation between the multicavity room that is equipped with through the rear end simultaneously further improves oil water separation effect and efficiency, provides powerful the support for old oil field realizes short flow gathering and transportation mode.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a top view of the can body of the present invention below the divider plate.
FIG. 3 is a schematic structural view of a water recovery chamber according to the present invention.
FIG. 4 is a schematic structural diagram of the gas dissolving and dispensing device of the present invention.
Wherein, the tank body 1, the liquid inlet pipe 2, the diversion cavity 3, the diversion plate 4, the reentrant cavity 5, the diversion channel 6, the diversion plate 7, the backflow channel 8, the overflow port 9, the second separation cavity 10, the water recovery cavity 11, the electric dehydration cavity 12, the collection cavity 13, the emulsion cavity 14, the heating channel 15, the heater 16, the first-stage coalescence plate 17, the second-stage coalescence plate 18, the distributor 19, the rectifier 20, the oil discharge pipeline 21, the first water discharge pipe 22, the second water discharge pipe 23, the third water discharge pipe 24, the electric dehydration device 25, the overflow plate 26, the overflow channel 27, the demulsifier injection pipe 28, the cyclone 29, the inclined pipe 30, the oil outlet 31, the water discharge pipe 32, the water discharge collecting pipe 33, the liquid level regulator 34, the first interface 35, the second interface 36, the oil discharge pipe 37, the partition plate 38, the water cavity partition plate 39, the collection water cavity 40, the clean oil water cavity 41, the clean oil pipeline 42, the clean oil reducing pipe, A circulating pipeline 45, a water discharge pipeline 46, a floater liquid level regulator 47, a water discharge valve 48, a circulating water valve 49, an observation window 50, a clean oil discharge pipe 51, a gas-liquid dissolving device 52, an external connecting port 53, a gas-liquid dissolving external pipe 54, a gas-liquid dissolving internal pipe 55, a capillary connecting pipe 56, an upper straight pipe 57, a middle inclined pipe 58, a lower straight pipe 59 and a gas-liquid connecting pipe 60.
Detailed Description
A single-layer cavity full-gravity balance oil-gas-water treatment integrated device comprises a tank body 1; the tank body 1 is inclined, and the horizontal height of the front end of the tank body 1 is higher than that of the rear end of the tank body 1; the front end of the tank body 1 is provided with a first separation cavity; the first separation cavity divides the upper part and the lower part of the first separation cavity into an emulsion cavity 14 and a turn-back cavity 5 through a partition plate 38; an overflow port 9 is arranged between the turn-back cavity 5 and the missible oil cavity 14; the lower end of the overflow port 9 is provided with an overflow plate 26; the rear end of the tank body 1 is provided with an electric dehydration cavity 12; an electric dehydration device 25 is arranged in the electric dehydration cavity 12; a heating channel 15 is arranged below the emulsion cavity 14; the heating channel 15 is communicated with the electric mop cavity 12; a collecting cavity 13 is arranged between the first separation cavity and the electric dehydration cavity 12; the upper ends of the collection cavity 13 and the electric dehydration cavity 12 are communicated through an oil outlet 31. Make the oily gas-liquid in the chamber 5 that turns back of jar body 1 through the slope column structure, through overflow mouth 9 and overflow plate 26 the overflow with block the separation, realize that the profit carries out the separation and filters for the first time, in the heating channel 15 that the oil emulsion chamber 14 was passed through to the floating oil directly enters into electric mop chamber 12, then through carrying out the secondary separation for the floating oil on upper portion gets into through oil-out 31 and collects chamber 13 in the electric dehydration chamber 12, accomplishes the cubic separation. The whole process flow can realize the multi-stage separation of oil, steam and water only by depending on gravity and the pressure of associated gas without providing additional energy power.
A flow distribution plate 4 is arranged at the front end of the first separation cavity; the splitter plate 4 is composed of a bending plate; the upper end of the bending plate is connected with the inner wall of the upper end of the tank body 1, and the lower end of the bending plate is connected with the inner wall of the bottom end of the tank body 1; an overflow channel 27 is formed among the bending plate, the overflow port 9 and the overflow plate 26; connecting plates are arranged at two ends of the bending plate; the upper end of the connecting plate is connected with the partition plate 38, and the lower end of the connecting plate is connected with the inner wall of the bottom end of the tank body 1; a flow guide channel 6 is formed among the connecting plate, the partition plate 38 and the inner wall of the tank body 1; a guide plate 7 is arranged at the tail end of the guide channel 6; the return channel 8 is formed between the guide plate 7, the partition plate 38 and the flow dividing plate 4. Through above-mentioned structural design for oil gas liquid provides and handles circulation path length, thereby promotes the separation effect.
The bending plate and the front end of the tank body 1 form a flow guide cavity 3; the flow guide cavity 3 is connected with a liquid inlet pipe 2; the tail end of the liquid inlet pipe 2 extends to the bottom of the diversion cavity 3 and is provided with a distributor 19. The distributor 19 distributes oil gas liquid into the diversion cavity 3 uniformly.
The bending plate is of a U-shaped structure or a V-shaped structure. Through the design, oil gas liquid is treated in the 2 diversion channels 6.
The guide plate 7 is of an arc-shaped structure; the two guide plates 7 are connected in a sealing way and symmetrically distributed at the opening of the flow distribution plate 4.
A first-stage coalescence plate 17 is arranged in the flow guide channel 6; a secondary coalescence plate 18 is arranged in the return channel 8.
The first-stage coalescence plate 17 is a hydrophilic coalescence plate; the secondary coalescence plate 18 is an oleophilic coalescence plate.
And the flow guide channels 6 on the two sides of the bending plate are provided with rectifiers 20. The rectifier has the function of enabling oil gas liquid to flow in the diversion channel 6 uniformly.
And a demulsifier injection pipe 28 is arranged at the overflow plate 26 in the emulsion chamber 14. Because the density of the oil is light, the oil floats on the water layer, and the demulsifier is added in the overflow process of the floating oil to ensure that the oil fully reacts and improve the oil-water separation effect in the next process.
The heating passage 15 is provided at the lowermost end of the oil chamber 14, and a plurality of heaters 16 are provided inside thereof.
A second separation cavity 10 is arranged between the first separation cavity and the collection cavity 13; an oil discharge pipeline 21 is arranged in the second separation cavity 10; the opening end of the oil discharge pipeline 21 is arranged upwards, and the tail end of the oil discharge pipeline 21 is communicated with the electric dehydration cavity 12.
A plurality of openings are uniformly distributed on the oil discharge pipeline 21 positioned in the electric dehydration cavity 12.
A water recovery cavity 11 is arranged between the second separation cavity 10 and the electric dehydration cavity 12; the lower end of the turn-back cavity 5 is communicated with the water recovery cavity 11 through a first water discharge pipe 22; the lower end of the second separation cavity 10 is communicated with the recovered water cavity 11 through a second water discharge pipe 23; the lower end of the electric dehydration cavity 12 is communicated with the recycled water cavity 11 through a third drain pipe 24.
The oil discharge pipelines 21 are provided with at least 2 and are uniformly distributed.
And liquid level regulators 34 are arranged on the first drain pipe 22, the second drain pipe 23 and the third drain pipe 24 in the recovery water cavity 11.
And the lowest ends of the first separation cavity, the second separation cavity 10, the water recovery cavity 11 and the electric dehydration cavity 12 are respectively provided with a drain pipe 32.
The bottom ends of the first separation cavity, the second separation cavity 10, the water recovery cavity 11 and the electric dehydration cavity 12 are respectively provided with a drainage collecting pipe 33; the drainage collecting pipe 33 is parallel to the bottom end of the tank body 1.
A water cavity clapboard 39 is arranged in the recovery water cavity 11; the water cavity partition plate 39 divides the water recovery cavity 11 into a water collecting cavity 40 and an oil-water purifying cavity 41 which are communicated with each other at the upper part; the collecting water cavity 40 is respectively communicated with the first drainage pipe 22, the second drainage pipe 23 and the third drainage pipe 24; an external connecting port 53 is arranged above the oil-water purifying cavity 41, and an oil purifying pipeline 42 is arranged on one side of the oil-water purifying cavity 41; the lower end of the oil purification pipeline 42 is provided with a circulating pipeline 45, and the circulating pipeline 45 is communicated with the bottom end of the water collection cavity 40; one side of the clean oil pipeline 42 is provided with a clean oil reducing pipe 43; an oil purifying outlet 44 is arranged outside the oil purifying reducing pipe 43; the lower end of the water collecting cavity 40 is provided with a water discharging pipeline 46; a water discharge valve 48 is arranged on the water discharge pipeline 46; a floater liquid level regulator 47 is arranged in the collecting water cavity 40; the float level regulator 47 is connected to a drain valve 48.
A connecting tee joint is arranged outside the clean oil outlet 44; the first end of the connecting tee is provided with an observation window 50, the second end of the connecting tee is provided with an oil-purifying discharge pipe 51, and the third end of the connecting tee is communicated with a circulating pipeline 45 and is provided with a circulating water valve 49. During use, the condition in the observation window 50 is observed, if black dirty oil exists, the dirty oil is discharged and collected through the oil-purifying discharge pipe 51, and if the dirty oil is cleaner water, the circulating water valve 49 is opened to discharge the dirty oil into the circulating pipeline 45.
The left end of the clean oil reducing pipe 43 is consistent with the caliber of the clean oil pipeline 42, the upper edge of the right end of the clean oil reducing pipe 43 is flush with the upper edge of the clean oil pipeline 42, and the lower edge of the right end of the clean oil reducing pipe 43 is of an upward inclined structure; the clean oil reducing pipe 43 is in a reducing structure from left to right.
The lower edge of the right end of the clean oil reducing pipe 43 is flush with the oil-water layered interface in the clean oil-water cavity 41.
A gas-dissolved liquid device 52 is arranged on the circulating pipeline 45 at the lower end of the oil purification pipeline 42; the gas-dissolved liquid device 52 comprises a gas-dissolved liquid outer pipe 54 and a gas-dissolved liquid inner pipe 55; the gas-liquid dissolving outer pipe 54 and the gas-liquid dissolving inner pipe 55 are both in a circular ring structure, and the gas-liquid dissolving inner pipe 55 is embedded in the gas-liquid dissolving outer pipe 54 and is communicated with each other through a plurality of capillary connecting pipes 56.
An inclined tube 30 is also arranged; the inclined tube is sequentially provided with an upper straight tube 57, a middle inclined tube 58 and a lower straight tube 59 from top to bottom; a gas-liquid separation plate is arranged at the joint of the middle inclined tube 58 and the upper straight tube 57; the gas-liquid separation plate can effectively reduce the liquid content in the gas. A gas-liquid connecting pipe 60 is arranged on the middle inclined pipe 58 below the gas-liquid separation plate; the lower end of the gas-liquid connecting pipe 60 is communicated with the lower straight pipe 59, and the liquid effectively separated by the gas-liquid separating plate enters the lower straight pipe 59 through the gas-liquid connecting pipe 60. A liquid phase guide plate is arranged between the gas-liquid connecting pipe 60 and the middle inclined pipe 58; the liquid phase guide plate serves to prevent gas from entering the gas-liquid connecting pipe 60 and to enhance the flow direction of liquid. The intermediate down tube 58 is provided with an initial inlet.
The lower end of the inclined pipe 30 is communicated with the liquid inlet pipe 2; the upper end of the inclined tube 30 is communicated with the first interface 35 on the first separation cavity and/or an external connection port 53 above the clean oil-water cavity 41.
The highest of said first separation chamber is provided with a cyclone 29.
The working principle is as follows:
as shown in figure 1, the tank body 1 is integrally in an inclined structure, and a support column at the left end of the tank body 1 is higher than a support column at the right end of the tank body 1. Meanwhile, the horizontal position of the inclined tube 30 is higher than the left end of the tank body 1.
Associated gas enters the inclined tube 30 through the middle inclined tube 58, the gas-liquid separation area is enlarged through the inclined arrangement, gas is discharged through the upper straight tube 57 and enters the next-stage treatment process, the one-stage oil liquid treated by the inclined tube 30 enters the liquid inlet tube 2 through the lower straight tube 59 and flows into the diversion cavity 3 under the uniform distribution of the distributor 19.
As shown in figure 2, the first-stage oil flows into the return channel 8 through the diversion channel 6 by the diversion treatment of the diversion plate 4, and is subjected to coalescence separation of the first-stage coalescence plate 17 and the second-stage coalescence plate 18 in sequence on the way, so that the oil-water separation effect is improved. Along with the continuous rising of the liquid level and the sedimentation separation of the primary oil, the oil layer in the primary oil floats upwards to the upper part, enters the overflow channel 27 through the overflow port 9, is separated by the obstruction of the overflow plate 26 to form secondary oil, and flows into the emulsion chamber 14.
In the overflow channel 27, the demulsifier is injected through the demulsifier injection pipe 28, so that the demulsifier and the oil layer in the first-stage oil liquid are subjected to opposite impact mixing, and the oil-water separation effect in the next flow is improved.
As shown in fig. 1, the partition plate 38 is inclined downward to the right in the horizontal direction (or may be relatively parallel to the tank 1), so that the secondary oil in the oil chamber 14 automatically flows into the heating passage 15 and enters the second separation chamber 10 under the influence of gravity. The heater 16 provided in the heating passage 15 can improve the oil-water separation effect in the next process by heating.
The second-stage oil liquid entering the second separation cavity 10 is subjected to sedimentation separation, and an oil layer floating above enters the electric dehydration cavity 12 through the oil discharge pipeline 21 to form third-stage oil liquid.
The tertiary fluid further realizes the dehydration under electric dehydration device 25's effect to through the sedimentation separation, under the effect of oil-out 31, collect the fluid after will accomplishing the separation to collecting chamber 13 in, fluid is got rid of through going out oil pipe 37, and gas is discharged through second interface 36.
The water separated and treated at the bottom in the turning-back cavity 5, the second separation cavity 10 and the electric dehydration cavity 12 is collected in the recovered water cavity 11 through a first water discharge pipe 22, a second water discharge pipe 23 and a third water discharge pipe 24. Meanwhile, liquid level regulators 34 are provided on the first drain pipe 22, the second drain pipe 23 and the third drain pipe 24, thereby reversely controlling the liquid level heights in the turn-back chamber 5, the second separation chamber 10 and the electro-dewatering chamber 12.
The water separated and treated at the bottom in the turn-back chamber 5, the second separation chamber 10 and the electro-dewatering chamber 12 may be discharged through a drain collecting pipe 33 and a drain pipe 32.
The gas exiting the upper straight tube 57 may be communicated to the first port 35, so that the gas enters the first separation chamber and is further separated and filtered by the cyclone 29.
The gas discharged from the upper straight tube 57 can also be communicated with the external connection port 53 in the recovery water cavity 11, and because a small amount of oil gas liquid exists in the gas, under the influence of air pressure and gravity, a wave beating effect is generated on the oil-water purification cavity 41 in the recovery water cavity 11, so that the floating oil in the oil-water purification cavity 41 is collected and processed through the oil purification pipeline 42, the oil purification reducing pipe 43 and the oil purification outlet 44 under the effect of the wave beating.
In order to ensure that the floating oil in the clean oil water chamber 41 does not enter the collecting water chamber 40 through the circulation pipeline 45, a large amount of demulsifier solution is injected through the solution device 52, and the floating oil is carried into the clean oil water chamber 41 again.
Above-mentioned whole flow adopts full gravity mode to handle, very big reduction the energy resource consumption, effectively improved the oil-water separation effect through multistage layering processing simultaneously.

Claims (24)

1. The utility model provides a full gravity balance oil gas water treatment integrated device of individual layer chamber which characterized in that:
comprises a tank body (1); the tank body (1) is inclined, and the horizontal height of the front end of the tank body (1) is higher than that of the rear end of the tank body (1);
the front end of the tank body (1) is provided with a first separation cavity; the upper part and the lower part of the first separation cavity are respectively divided into an emulsion cavity (14) and a turn-back cavity (5) by the first separation cavity through a partition plate (38); an overflow port (9) is arranged between the turn-back cavity (5) and the emulsion cavity (14); the lower end of the overflow port (9) is provided with an overflow plate (26);
the rear end of the tank body (1) is provided with an electric dehydration cavity (12); an electric dehydration device (25) is arranged in the electric dehydration cavity (12);
a heating channel (15) is arranged below the oil cavity (14); the heating channel (15) is communicated with the electric mop cavity (12);
a collecting cavity (13) is arranged between the first separation cavity and the electric dehydration cavity (12); the upper ends of the collecting cavity (13) and the electric dewatering cavity (12) are communicated through an oil outlet (31).
2. The integrated device for the full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 1, which is characterized in that: a flow distribution plate (4) is arranged at the front end of the first separation cavity;
the flow distribution plate (4) is composed of a bending plate; the upper end of the bending plate is connected with the inner wall of the upper end of the tank body (1), and the lower end of the bending plate is connected with the inner wall of the bottom end of the tank body (1); an overflow channel (27) is formed among the bending plate, the overflow port (9) and the overflow plate (26);
connecting plates are arranged at two ends of the bending plate; the upper end of the connecting plate is connected with the partition plate (38), and the lower end of the connecting plate is connected with the inner wall of the bottom end of the tank body (1); a flow guide channel (6) is formed among the connecting plate, the partition plate (38) and the inner wall of the tank body (1);
a guide plate (7) is arranged at the tail end of the guide channel (6);
and a backflow channel (8) is formed among the guide plate (7), the partition plate (38) and the flow distribution plate (4).
3. The integrated device for full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 2, characterized in that: the bending plate and the front end of the tank body (1) form a flow guide cavity (3); the flow guide cavity (3) is connected with a liquid inlet pipe (2); the tail end of the liquid inlet pipe (2) extends to the bottom of the flow guide cavity (3) and is provided with a distributor (19).
4. The integrated device for full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 2, characterized in that: the bending plate is of a U-shaped structure or a V-shaped structure.
5. The integrated device for full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 4, wherein: the guide plate (7) is of an arc-shaped structure; the two guide plates (7) are connected in a sealing way and are symmetrically distributed at the opening of the flow distribution plate (4).
6. The integrated device for full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 2, characterized in that: a first-stage coalescence plate (17) is arranged in the flow guide channel (6); and a secondary coalescence plate (18) is arranged in the backflow channel (8).
7. The integrated device for full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 6, wherein: the first-stage coalescence plate (17) is a hydrophilic coalescence plate; the secondary coalescence plate (18) is an oleophilic coalescence plate.
8. The integrated device for full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 2, characterized in that: and the flow guide channels (6) on the two sides of the bending plate are provided with rectifiers (20).
9. The integrated device for the full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 1, which is characterized in that: and a demulsifier injection pipe (28) is arranged at the overflow plate (26) in the emulsion chamber (14).
10. The integrated device for the full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 1, which is characterized in that: the heating channel (15) is arranged at the lowest end of the oil cavity (14), and a plurality of heaters (16) are arranged in the heating channel.
11. The integrated device for the full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 1, which is characterized in that: a second separation cavity (10) is arranged between the first separation cavity and the collection cavity (13); an oil discharge pipeline (21) is arranged in the second separation cavity (10); the opening end of the oil discharge pipeline (21) is arranged upwards, and the tail end of the oil discharge pipeline (21) is communicated with the electric dehydration cavity (12).
12. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 11, wherein: a plurality of open holes are uniformly distributed on the oil discharge pipeline (21) positioned in the electric dehydration cavity (12).
13. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 11, wherein: a water recovery cavity (11) is arranged between the second separation cavity (10) and the electric dehydration cavity (12); the lower end of the turning-back cavity (5) is communicated with the water recovery cavity (11) through a first drain pipe (22); the lower end of the second separation cavity (10) is communicated with the recovered water cavity (11) through a second water discharge pipe (23); the lower end of the electric dehydration cavity (12) is communicated with the water recovery cavity (11) through a third water discharge pipe (24).
14. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 11, wherein: the oil discharge pipelines (21) are at least 2 and are uniformly distributed.
15. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 13, wherein: and liquid level regulators (34) are arranged on the first drainage pipe (22), the second drainage pipe (23) and the third drainage pipe (24) in the water recovery cavity (11).
16. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 13, wherein: the lowest ends of the first separation cavity, the second separation cavity (10), the water recovery cavity (11) and the electric dehydration cavity (12) are respectively provided with a drain pipe (32).
17. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 13, wherein: the bottom ends of the first separation cavity, the second separation cavity (10), the water recovery cavity (11) and the electric dehydration cavity (12) are respectively provided with a drainage collecting pipe (33); the drainage collecting pipe (33) is parallel to the bottom end of the tank body 1.
18. The integrated device for full-gravity balance oil-gas-water treatment of a single-layer cavity according to claim 13, wherein: a water cavity clapboard (39) is arranged in the recovery water cavity (11); the water cavity partition plate (39) divides the water recovery cavity (11) into a water collecting cavity (40) and an oil-water purifying cavity (41) which are communicated with each other at the upper part; the water collecting cavity (40) is respectively communicated with the first drainage pipe (22), the second drainage pipe (23) and the third drainage pipe (24); an external connecting port (53) is arranged above the oil-water purifying cavity (41), and an oil purifying pipeline (42) is arranged on one side of the oil-water purifying cavity (41); the lower end of the oil purification pipeline (42) is provided with a circulating pipeline (45), and the circulating pipeline (45) is communicated with the bottom end of the water collection cavity (40); one side of the clean oil pipeline (42) is provided with a clean oil reducing pipe (43); an oil cleaning outlet (44) is arranged outside the oil cleaning reducing pipe (43); the lower end of the water collecting cavity (40) is provided with a water discharging pipeline (46); a water drain valve (48) is arranged on the water drain pipeline (46); a floater liquid level regulator (47) is arranged in the water collecting cavity (40); the float liquid level regulator (47) is connected with a water drain valve (48).
19. The integrated single-cavity full-gravity-balance oil-gas-water treatment device according to claim 18, wherein: the left end of the clean oil reducing pipe (43) is consistent with the caliber of the clean oil pipeline (42), the upper edge of the right end of the clean oil reducing pipe (43) is flush with the upper edge of the clean oil pipeline (42), and the lower edge of the right end of the clean oil reducing pipe (43) is of an upward inclined structure; the clean oil reducing pipe (43) is in a reducing structure from left to right.
20. The integrated single-cavity full-gravity-balance oil-gas-water treatment device according to claim 19, wherein: the lower edge of the right end of the clean oil reducing pipe (43) is level with an oil-water layered interface in the clean oil-water cavity (41).
21. The integrated single-cavity full-gravity-balance oil-gas-water treatment device according to claim 19, wherein: a gas-liquid dissolving device (52) is arranged on a circulating pipeline (45) at the lower end of the oil purifying pipeline (42); the gas-dissolved liquid device (52) comprises a gas-dissolved liquid outer pipe (54) and a gas-dissolved liquid inner pipe (55); the gas-dissolved liquid outer pipe (54) and the gas-dissolved liquid inner pipe (55) are both in circular ring structures, and the gas-dissolved liquid inner pipe (55) is embedded in the gas-dissolved liquid outer pipe (54) and is communicated with the gas-dissolved liquid inner pipe through a plurality of capillary connecting pipes (56).
22. The integrated single-cavity full-gravity-balance oil-gas-water treatment device according to claim 18, wherein: an inclined tube (30) is also arranged; the inclined tube is sequentially provided with an upper straight tube (57), a middle inclined tube (58) and a lower straight tube (59) from top to bottom; a gas-liquid separation plate is arranged at the joint of the middle inclined pipe (58) and the upper straight pipe (57); a gas-liquid connecting pipe (60) is arranged on the middle inclined pipe (58) below the gas-liquid separation plate; the lower end of the gas-liquid connecting pipe (60) is communicated with the lower straight pipe (59); a liquid phase guide plate is arranged between the gas-liquid connecting pipe (60) and the middle inclined pipe (58); the middle inclined tube (58) is provided with an initial inlet.
23. The integrated single-chamber full-gravity-balance oil-gas-water treatment device according to claim 22, wherein: the lower end of the inclined pipe (30) is communicated with the liquid inlet pipe (2); the upper end of the inclined pipe (30) is communicated with a first connector (35) on the first separation cavity and/or an external connector (53) above the clean oil-water cavity (41).
24. The integrated device for the full-gravity balance oil-gas-water treatment of the single-layer cavity according to claim 1, which is characterized in that: the highest part of the first separation cavity is provided with a cyclone (29).
CN202110033235.0A 2021-01-12 2021-01-12 Single-layer cavity full-gravity-balance oil-gas-water treatment integrated device Active CN112354262B (en)

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