CN118987696A - Method for treating wastewater in production process of gas well - Google Patents
Method for treating wastewater in production process of gas well Download PDFInfo
- Publication number
- CN118987696A CN118987696A CN202310562319.2A CN202310562319A CN118987696A CN 118987696 A CN118987696 A CN 118987696A CN 202310562319 A CN202310562319 A CN 202310562319A CN 118987696 A CN118987696 A CN 118987696A
- Authority
- CN
- China
- Prior art keywords
- oil
- water
- production process
- floating
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Removal Of Floating Material (AREA)
- Physical Water Treatments (AREA)
Abstract
本发明公开了一种气井生产过程废水处理方法，将气井生产过程中产生的废水集中排放至气田水池中静置，水液下沉，油液上浮；当气田水池内的上层浮油混合液的厚度高于设定厚度时，将上层浮油混合液抽至一个密闭容器的分离腔内；被抽至密闭容器内的上层浮油混合液在该分离腔内，水液下沉，油液上浮；当分离腔内的油液和水液分界线低于设定的第一分界线高度时，密闭容器底部的出水口处于关闭状态；当分离腔内的水液和油液分界线高于设定的第一分界线高度时，打开密闭容器底部的出水口，将水液排出；油液从上方排出分离腔。本发明进行油水二次分离，回收分离出的油液，再将分离出的水液回流至气田水池，并将剩下的气田水一起回注至已开采的地下层。
The invention discloses a method for treating wastewater in a gas well production process. The wastewater generated in the gas well production process is concentratedly discharged into a gas field pool for standing, and the water liquid sinks while the oil liquid floats. When the thickness of the upper floating oil mixed liquid in the gas field pool is higher than the set thickness, the upper floating oil mixed liquid is pumped into a separation chamber of a closed container. In the separation chamber, the upper floating oil mixed liquid pumped into the closed container sinks while the oil liquid floats. When the oil-water dividing line in the separation chamber is lower than the set first dividing line height, the water outlet at the bottom of the closed container is in a closed state. When the water-oil dividing line in the separation chamber is higher than the set first dividing line height, the water outlet at the bottom of the closed container is opened to discharge the water liquid. The oil liquid is discharged from the separation chamber from above. The invention performs secondary separation of oil and water, recovers the separated oil liquid, and then returns the separated water liquid to the gas field pool, and injects the remaining gas field water back into the mined underground layer.
Description
Technical Field
The invention relates to the technical field of gas well production, in particular to a wastewater treatment method in a gas well production process.
Background
The wastewater generated in the natural gas well production process comprises gas field water, formation water, drilling fluid, compressor blowdown fluid and the like generated in the drilling process. The waste water is often mixed with a large amount of inflammable oil components, and a large amount of potential safety hazards exist no matter the waste water is not well treated in the processes of storage, transfer and discharge.
CN201921926459.9 discloses a comprehensive treatment system for sulfur-containing gas field water, which belongs to the technical field of gas field water treatment. The system comprises: the device comprises a coagulation softening flocculation unit, a sludge sedimentation unit, a tubular micro-filtration unit, a chemical oxidation unit and a nanofiltration salt separation unit, wherein the coagulation softening flocculation unit, the sludge sedimentation unit, the tubular micro-filtration unit, the chemical oxidation unit and the nanofiltration salt separation unit are sequentially connected, the dosing end of the coagulation softening flocculation unit, the dosing end of the chemical oxidation unit and the dosing end of the nanofiltration salt separation unit are connected with the dosing unit, and the sewage outlet of the coagulation softening flocculation unit, the sewage outlet of the sludge sedimentation unit and the sewage outlet of the chemical oxidation unit are connected with a plate frame filter pressing unit. Concentrated water flowing out of the first water outlet end of the nanofiltration salt separation unit can enter the coagulation softening flocculation unit again, so that required ions are provided for the coagulation softening flocculation unit, and the medicine input amount of the coagulation softening flocculation unit is reduced. The application can realize the advanced treatment of sulfur-containing gas field water, and the clean water after the treatment reaches the standard and can be directly discharged.
CN201610789519.1 discloses a water treatment method for a mercury-containing gas field, which aims to solve the problems that the mercury-containing wastewater has complex components and strong stability, and the existing method is difficult to meet the water treatment requirement of the mercury-containing gas field. The method comprises the following steps: demulsification and oil removal, destabilization reduction, flocculation precipitation, multiphase electro-catalysis and adsorption. The method can be effectively used for treating mercury-containing wastewater, especially mercury-containing wastewater with complex components and high stability, has the SS removal rate of 80-90%, the petroleum removal rate of 95-99%, the COD removal rate of 85-95% and the total mercury removal rate of 95-98%, and has remarkable progress. According to the measurement, in the effluent quality treated by the method, total mercury and alkyl mercury reach the discharge standard of integrated wastewater discharge standard (GB 8978-1996), and SS, COD and petroleum can be reduced below the three-level standard of integrated wastewater discharge standard (GB 8978-1996).
The existing gas field water treatment methods have the defects of good treatment effect of harmful components, complex treatment steps, high cost and low wastewater utilization efficiency.
Disclosure of Invention
The invention aims to solve the problems of complex treatment steps, higher cost, lower waste water utilization efficiency and the like, and provides a waste water treatment method in the production process of a gas well, wherein waste water generated in the production process of the gas well is intensively discharged into a gas field pool for standing, natural layering is carried out once by utilizing different specific gravities of oil and water, when the thickness of upper layer floating oil mixed liquid is higher than a set value, the upper layer floating oil mixed liquid in the gas field pool is extracted into an oil-water separation storage device, water liquid below the gas field pool is left in the gas field pool, the upper layer floating oil mixed liquid is subjected to secondary natural layering in the separation cavity, the upper part in the separation cavity overflows to obtain oil liquid (oil liquid component is recycled), the lower part below the separation cavity leaks to obtain the water liquid (the water liquid component flows back to a gas field pool through a return pipe), and the control is realized by monitoring the boundary between the oil liquid and the water liquid in the separation cavity.
The invention aims at realizing the following technical scheme:
a method for treating waste water in the production process of a gas well, which specifically comprises the following steps of,
The wastewater generated in the production process of the gas well is intensively discharged into a gas field pool for standing, water and liquid sink, and oil floats upwards;
when the thickness of the upper layer floating oil mixed solution in the gas field pool is higher than the set thickness, pumping the upper layer floating oil mixed solution into a separation cavity of a closed container;
The upper layer floating oil mixed solution pumped into the closed container is in the separation cavity, the water solution sinks, and the oil solution floats upwards;
When the boundary between the oil liquid and the water liquid in the separation cavity is lower than the set first boundary height, the water outlet at the bottom of the closed container is in a closed state; when the boundary between the water and the oil in the separation cavity is higher than the set first boundary, opening a water outlet at the bottom of the closed container, and discharging the water; the oil is discharged from the separation chamber from above.
Preferably, the separation cavity is divided into a standing cavity and a liquid inlet cavity which are communicated with each other at the bottom by a separation baffle, and the standing cavity is communicated with the liquid inlet cavity by a separation baffle with a porous structure or a net structure; continuously pumping the upper layer floating oil mixed liquid to the liquid inlet cavity, monitoring the height of the boundary between the oil liquid and the water liquid in the standing cavity, and opening a water outlet at the bottom of the separation cavity to discharge the water liquid when the boundary between the oil liquid and the water liquid in the standing cavity is higher than the set first boundary height.
Preferably, the monitoring of the height of the boundary between the oil and the water in the standing cavity is realized by arranging a control floating body in the standing cavity, wherein the density of the control floating body is greater than that of the oil to be separated but less than that of the water; connecting the control floating body with a water outlet plug at the water outlet at the bottom of the separation cavity; when the floating body is controlled to rise to the height of the first dividing line, the water outlet plug is driven to open the water outlet; and when the boundary between the oil liquid and the water liquid is lower than the first boundary, the floating body is controlled to descend and the water outlet plug is driven to block the water outlet.
Preferably, the control floating body is limited to move in the horizontal direction in the process of ascending or descending along the boundary line of the oil liquid and the water liquid in the separation cavity.
Preferably, the limiting control of the horizontal movement of the floating body is realized by a connecting rod arranged in the separation cavity, the connecting rod comprises a vertical section and a horizontal section, the control floating body is connected to the upper part of the vertical section, one end of the horizontal section is connected to the lower part of the vertical section, and the other end of the horizontal section is hinged to the inner side wall of the separation cavity; and the water outlet plug is fixedly connected below the horizontal section.
Preferably, the vertical section and the horizontal section are rotatably connected.
Preferably, the set second boundary line height is set by setting the height of the control float on the vertical section.
Preferably, the gas in the upper layer oil-slick mixed solution is discharged before the upper layer oil-slick mixed solution is continuously pumped into the separation cavity.
Preferably, the gas in the upper layer floating oil mixed liquid is discharged by arranging a transition box on the separation cavity, the lower part of the transition box is respectively provided with a plurality of liquid leakage holes, one end of the transition box is connected with the outlet end of a conveying pipeline for pumping the upper layer floating oil mixed liquid, and the upper part of the other end is provided with an air outlet pipe which is externally connected to the outside of the closed container; the upper layer floating oil mixed solution falls into the separation cavity through the liquid leakage hole, and gas in the upper layer floating oil mixed solution is discharged out of the closed container through the gas outlet pipe.
Preferably, one end of the air outlet pipe extending out of the closed container is bent downwards.
Preferably, a plurality of traction wires which droop to the bottom of the box are fixedly arranged on the upper side wall of the inner cavity of the transition box.
Preferably, when the liquid level of the oil in the separation cavity exceeds the preset oil height, the oil overflows into the oil storage cavity at one side of the separation cavity.
Preferably, the preset oil height is set by controlling the height of an overflow baffle between the oil storage cavity and the separation cavity, and when the oil liquid level in the separation cavity is higher than the height of the overflow baffle, the oil overflows from the overflow baffle to the oil storage cavity.
Preferably, when the oil level in the oil storage cavity is higher than the set level, an oil outlet at the bottom of the oil storage cavity is opened to discharge the oil.
Preferably, the height of the oil in the oil storage cavity is detected by a liquid level detection sensor arranged in the oil storage cavity, and when the liquid level detection sensor detects that the height of the oil in the oil storage cavity is higher than a set height, an oil outlet at the bottom of the oil storage cavity is opened to discharge the oil.
Preferably, the oil outlet is connected with an oil outlet pipeline, and the oil outlet pipeline is connected with an oil outlet pump.
Preferably, the water outlet is connected with a return pipeline, and the water liquid discharged from the water outlet flows back into the gas field pool through the return pipeline.
Preferably, when the oil quality in the oil storage cavity is poor, the poor oil is returned to the gas field pool.
Preferably, an oil outlet pipeline connected with the oil outlet is connected with a return pipeline connected with the water outlet, when the oil quality in the oil outlet cavity is poor, the switching of the electromagnetic valve on the oil outlet pipeline and the return pipeline is controlled, and the oil in the oil storage cavity is returned to a gas field pool through the return pipeline.
Preferably, the detection of the thickness of the upper layer of the floating oil mixture is realized by a floating oil detection device.
Preferably, the thickness of the upper layer floating oil mixture is detected by detecting the distance between the boundary between the water liquid in the gas field pool and the upper layer floating oil mixture and the liquid level of the upper layer floating oil mixture.
Preferably, a detection float with density smaller than that of water is arranged in the gas field pool, and a plurality of oil sensors are arranged on the detection float from the height direction to reliably detect the thickness of the upper layer floating oil mixed liquid, so that the structure is simple and reliable.
Preferably, the plurality of oil sensors are connected with the control center, and when the thickness of the upper layer floating oil mixed solution is higher than the set highest thickness, the control center controls the floating oil extracting device to start to extract the upper layer floating oil mixed solution into a separation cavity of the closed container; along with the discharge of the upper layer floating oil mixed solution, the thickness of the upper layer floating oil mixed solution in the gas field pool is reduced along with the discharge, and when the thickness of the upper layer floating oil mixed solution is lower than the set minimum thickness, the control center controls the floating oil extraction device to be closed.
Preferably, the floating oil extraction device comprises a supporting frame, a supporting floater with the density smaller than that of the floating oil is arranged on the periphery of the supporting frame, the supporting frame is kept in a suspended state, a flexible conveying pipeline is further arranged on the conveying pipeline, a suction pump is arranged on the conveying pipeline, the conveying pipeline is provided with an outlet end connected with the oil-water separation storage device, the conveying pipeline is further provided with an inlet end connected with the supporting frame, an oil suction cylinder with the diameter larger than that of the conveying pipeline is vertically and fixedly arranged on the supporting frame, an oil suction port for sucking upper-layer floating oil mixed liquid is arranged at the upper end of the oil suction cylinder, and the lower end of the oil suction cylinder is connected with the inlet end of the conveying pipeline.
Preferably, the floating objects in the upper layer floating oil mixture are filtered and intercepted before the upper layer floating oil mixture flows into the oil suction cylinder.
Preferably, filtering and intercepting floating objects in the upper layer floating oil mixed solution is realized by arranging a circle of grille on the periphery of an oil suction cylinder, wherein the grille comprises a closed separation cylinder which is positioned below and fixed on a support frame, a plurality of vertical rods which are vertically and fixedly arranged upwards are uniformly distributed at the upper end of the separation cylinder, and an oil suction port is positioned in the area where the vertical rods are positioned; the upper layer floating oil mixed solution flows in through gaps between the vertical rods, and impurities in the upper layer floating oil mixed solution are isolated outside the vertical rods.
Preferably, the support frame comprises a bottom plate horizontally arranged below, the oil suction cylinder is fixedly arranged in the middle of the bottom, a vertical upward support rod is arranged on the periphery of the bottom plate, and the upper end of the support rod is connected with the support floater.
Preferably, when the suction pump pumps the upper layer floating oil mixture, the suction effect of the suction pump is adjusted.
Preferably, the suction effect of the suction pump is adjusted by adjusting the height of the oil suction cylinder, the oil suction cylinder comprises an upper half cylinder and a lower half cylinder which are screwed together by threads, the overall height of the oil suction cylinder is adjusted by the threaded fit of the upper half cylinder and the lower half cylinder, and then the height of the oil suction port entering the upper layer floating oil mixed liquid is adjusted.
Preferably, the suction effect of the suction pump is adjusted by adjusting the interval distance between the lower surface of the upper cover plate and the upper layer floating oil mixed liquid, the upper end of the vertical rod extends upwards out of the upper layer floating oil mixed liquid and is fixedly provided with an upper cover plate which is horizontally arranged, and the oil suction cylinder is positioned below the middle part of the upper cover plate.
Preferably, the interval distance between the lower surface of the upper cover plate and the upper layer floating oil mixed liquid is adjusted through an upper cover plate height adjusting mechanism, the upper cover plate height adjusting mechanism comprises a supporting rod, a through hole is vertically formed in the middle of the supporting floater, the supporting rod is slidably arranged in the through hole, external threads are arranged on the supporting rod, and a height adjusting nut for supporting the floater is further screwed on the supporting rod at the upper end of the through hole.
Preferably, the periphery of the upper cover plate outwards exceeds the range of the support frame, and a yielding hole is formed in the upper cover plate corresponding to the position of the support floater.
The beneficial effects of this technical scheme are as follows:
1. According to the invention, wastewater generated in the production process of the gas well is intensively discharged into a gas field pool for standing, primary natural layering is performed by utilizing different oil-water specific gravities, when the thickness of the upper layer floating oil mixed liquid is higher than a set value, the upper layer floating oil mixed liquid in the gas field pool is pumped into an oil-water separation storage device, water liquid below the gas field pool is left in the gas field pool, the upper layer floating oil mixed liquid is subjected to secondary natural layering in a separation cavity, the upper part in the separation cavity overflows to obtain oil liquid (oil liquid component is recycled), the lower part below the separation cavity leaks out of the water liquid (the water liquid component flows back to the gas field pool through a return pipe), and control is realized by monitoring the boundary between the oil liquid and the water liquid in the separation cavity.
2. According to the invention, by monitoring the boundary between the oil liquid and the water liquid, the upper layer floating oil mixed liquid in the separation cavity is always controlled within a certain height range, so that the situation that the upper layer floating oil mixed liquid is discharged after incomplete separation is avoided, the discharged water liquid contains a certain amount of oil liquid, the height of the boundary between the oil liquid and the water liquid is set, the separation time is provided for the oil liquid, a certain amount of water liquid is discharged after the boundary between the oil liquid and the water liquid is higher than the set height, the water liquid is always maintained in the set volume, the oil liquid gradually accumulates in the separation cavity, and overflows into the oil storage cavity after the oil liquid accumulates to the set height, and the oil-water separation effect is further ensured in the accumulation process, so that the incomplete oil-water separation is avoided.
3. According to the invention, the separation cavity is divided into the standing cavity and the liquid inlet cavity which are communicated with each other at the bottom by the separation partition plate, so that the influence of upper layer floating oil mixed liquid which continuously and newly enters the separation cavity on the oil-water separation stability is avoided, the stability of overflow oil after the height of the oil in the standing cavity is set to be high is ensured, and the stability of monitoring the boundary between the oil and the water is also ensured. The porous structure plate or the reticular structure plate is adopted as the separation baffle, so that the standing cavity and the liquid inlet cavity can be communicated through a hole structure on the separation baffle, the liquid level of the liquid inlet cavity is the same as that of the liquid in the standing cavity, the situation that the liquid in the liquid inlet cavity is more accumulated along with the discharge of the water liquid at the bottom is avoided, the entry of the water in the gas well to be treated is blocked, and the flowing of the liquid in the liquid inlet cavity to the standing cavity can be facilitated; the porous structure plate or the net structure plate is used as a separation baffle to reduce the influence of oil-water descending impact liquid in the liquid inlet cavity on the control floating body in the standing cavity, and the separation baffle with the porous or net structure can ensure that the heights of oil-water interfaces at two sides are basically consistent.
4. According to the invention, the monitoring of the boundary between the oil liquid and the water liquid is realized through the control floating body, and the physical mode is utilized for monitoring, so that the stability is better compared with the mode of arranging a liquid level monitoring sensor and the like, and the misoperation caused by fluctuation of the boundary in the electronic monitoring mode is avoided. The density of the control floating body is smaller than that of the oil to be separated and larger than that of the water liquid, the control floating body can sink into the oil and float on the water liquid, so that the control floating body is always positioned at the boundary position of the oil and the water liquid, rises along with the rising of the boundary of the oil and the water liquid, falls down and falls down, and the stability of monitoring of the boundary of the oil and the water liquid is improved.
5. The invention utilizes the control floating body to control the opening and closing of the water outlet, so as to avoid the false opening of the water outlet caused by the horizontal movement of the control floating body, therefore, the horizontal movement of the control floating body is required to be limited, and the control floating body only rises or falls along with the boundary between oil liquid and water liquid. The invention adopts a simple connecting rod to realize the limitation of controlling the horizontal movement of the floating body, and the height setting of the boundary line between oil liquid and water liquid can be changed by controlling the height setting of the floating body on the vertical section of the connecting rod, so that the invention has the advantages of simple structure, convenient realization and high stability.
6. The invention discharges the gas in the upper layer floating oil mixed liquid, can avoid the air mixed in the mixed liquid from entering the closed container, thereby avoiding the influence on safety caused by the rise of the air pressure in the closed container and better improving the explosion-proof safety performance of the closed container.
7. The invention discharges the gas in the upper layer floating oil mixed liquid by arranging the transition box, has simple structure, is convenient to realize and has lower cost. The mouth of the air outlet pipe is downwards bent. Can better avoid sundries from entering from the air outlet pipe. The upper side wall of the inner cavity of the transition box is also fixedly provided with a plurality of traction wires which droop to the bottom of the box. Therefore, because the viscosity of the oil liquid component is large, under the action of traction force generated by leakage under the liquid leakage hole, the small bubbles in the part mixed with the oil liquid are difficult to overflow in a short transition time, so that the traction wire is favorable for the bubbles in the oil liquid to be attached and converged on the traction wire and overflow to the upper end of the transition box along the traction wire, and the gas-liquid separation effect is further improved.
8. According to the invention, the overflow baffle plate is arranged to divide the closed container into the oil storage cavity and the separation cavity, and the arrangement of the oil storage cavity ensures the stability of oil overflowed from the overflow baffle plate and simultaneously ensures the stability of controlling the floating body to work.
9. According to the invention, the oil is accelerated to be discharged from the oil storage cavity by arranging the liquid level detection sensor in the oil storage cavity and arranging the oil outlet pump, and meanwhile, the automatic control can be realized. And (3) returning the oil with poor oil quality to a pool of the gas field, and separating the oil again to improve the quality of the separated oil.
10. The floating oil detection device is equipment capable of detecting the thickness of the upper floating oil mixed solution, and is implemented by directly purchasing the existing functional products.
11. The float for detection can conveniently and reliably detect the thickness of the upper layer floating oil mixed solution by virtue of the plurality of oil liquid sensors arranged in the height direction, and has a simple and reliable structure.
12. According to the invention, a distance is reserved between the lower surface of the upper cover plate and the upper layer floating oil mixed liquid, so that when the upper layer floating oil mixed liquid is thinner, the influence of air above the upper layer floating oil mixed liquid on the suction of the upper layer floating oil mixed liquid can be better shielded, excessive air is prevented from being sucked, the suction force of the oil suction port on the upper layer floating oil mixed liquid can form negative pressure through the upper cover plate so as to better extend to the periphery, and the effect of converging oil around to the oil suction port is improved. The spacing distance is usually 0.5-1.5 cm (preferably about 1 cm), if the spacing distance is less than 0.5 cm, the upper layer floating oil mixed solution is easy to contact with the lower surface of the upper cover plate in the sucking flow process to generate viscosity, and if the spacing distance is more than 1.5 cm, negative pressure is difficult to generate better to improve the sucking effect of the upper layer floating oil mixed solution around.
13. The invention adjusts the relative height position of the supporting rod and the supporting floater by rotating the supporting floater height adjusting nut. The supporting floats are always floated on the liquid level, the height position of the supporting floats is unchanged, and the supporting rods and the upper cover plate are relatively fixedly arranged by virtue of the supporting frames and the grids, so that the height of the upper cover plate can be adjusted. From the adjusting process, an adjusting linkage relation exists between the structure for adjusting the height of the upper cover plate from the water surface and the structure for adjusting the height of the oil suction port at the upper end of the oil suction cylinder; therefore, in the adjusting process, the height of the oil suction port at the upper end of the oil suction cylinder is changed due to the change of the height of the support frame, and the height of the oil suction port can be readjusted through the structure of the oil suction cylinder, so that the oil suction cylinder is positioned at a proper height position, and the oil suction effect is ensured.
14. According to the invention, by monitoring the boundary between the oil liquid and the water liquid, the water liquid in the separation cavity is always controlled within a certain height range, so that the situation that the oil-water separation is not completed is avoided, the discharged water liquid contains a certain amount of oil liquid, the height of the boundary between the oil liquid and the water liquid is set, the separation time is provided for the oil liquid, a certain amount of water liquid is discharged after the boundary between the oil liquid and the water liquid is higher than the set height, the water liquid is always maintained within the set volume, the oil liquid gradually accumulates in the separation cavity, and overflows into the oil storage cavity after the oil liquid accumulates to the set height, the oil-water separation effect is further ensured in the accumulation process, and the situation that the oil-water separation is incomplete is avoided.
Drawings
FIG. 1 is a schematic diagram of a wastewater treatment system in the production process of a gas well in the present invention;
FIG. 2 is a schematic diagram of a floating oil extraction device;
FIG. 3 is a schematic diagram of the structure of an oil-water separation storage device;
Wherein: 1. a gas field pool; 2. a floating oil detection device; 3. a delivery conduit; 4. a control center; 5. a return line; 6. a supporting float; 7. a suction pump; 8. an oil suction cylinder; 9. a separation barrel; 10. a vertical rod; 11. a bottom plate; 12. a support rod; 13. an upper cover plate; 14. a height adjusting nut; 15. a case; 16. a separation chamber; 17. an overflow baffle; 18. an oil storage chamber; 19. a water outlet plug; 20. controlling the floating body; 21. a connecting rod; 22. a lock nut; 23. a transition box; 24. an air outlet pipe; 25. drawing the silk thread; 26. a separation partition; 27. a pump chamber; 28. an oil outlet pump; 29. a liquid level detection sensor; 30. an oil outlet pipeline; 31. a return line; 32. a control room; 33. and a storage battery.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 3, as a preferred embodiment of the present invention, this embodiment discloses a wastewater treatment method for a gas well production process, specifically,
The wastewater generated in the production process of the gas well is intensively discharged into a gas field pool 1 for standing, water and liquid sink, and oil floats upwards;
when the thickness of the upper layer floating oil mixed solution in the gas field pool 1 is higher than the set thickness, pumping the upper layer floating oil mixed solution into a separation cavity 16 of a closed container, wherein the closed container is a box body 15;
the upper layer floating oil mixed solution pumped into the closed container is in the separation cavity 16, the water solution sinks, and the oil floats upwards;
When the boundary between the oil liquid and the water liquid in the separation cavity 16 is lower than the set first boundary height, the water outlet at the bottom of the closed container is in a closed state; when the boundary between the water and the oil in the separation cavity 16 is higher than the set first boundary, opening a water outlet at the bottom of the closed container to discharge the water; the oil is discharged from above from the separation chamber 16.
In this embodiment, wastewater generated in the production process of a gas well is discharged into a gas field pool 1 in a concentrated manner and is placed still, the oil-water specific gravity difference is utilized to perform primary natural layering, when the thickness of the upper layer of floating oil mixed liquid is higher than a set value, the upper layer of floating oil mixed liquid in the gas field pool 1 is extracted into a separation cavity 16, water liquid below the gas field pool 1 is left in the gas field pool 1, the upper layer of floating oil mixed liquid performs secondary natural layering in the separation cavity 16, oil liquid overflows from the upper side in the separation cavity 16 (oil liquid component is recycled), water liquid leaks from the lower side of the separation cavity 16 (water liquid component flows back to the pool 1 through a backflow pipe), and the oil-water liquid boundary in the separation cavity 16 is monitored to realize control.
Example 2
As a further preferred embodiment of the present invention, this embodiment is further detailed supplement and explanation of the technical solution of the present invention based on embodiment 1 described above.
In the embodiment, the separation cavity 16 is divided into a standing cavity and a liquid inlet cavity which are communicated with each other at the bottom by adopting a separation baffle 26, and the standing cavity and the liquid inlet cavity are communicated by the separation baffle 26 with a porous structure or a net structure; and continuously pumping the upper layer floating oil mixed liquid to the liquid inlet cavity, monitoring the height of the boundary between the oil liquid and the water liquid in the standing cavity, and opening a water outlet at the bottom of the separation cavity 16 when the boundary between the oil liquid and the water liquid in the standing cavity is higher than the set first boundary height, so as to discharge the water liquid.
In this embodiment, by monitoring the boundary between the oil and the water, the water in the separation chamber 16 is always controlled within a certain height range, so as to avoid that the oil and water are not completely separated and discharged, the discharged water contains a certain amount of oil, the height of the boundary between the oil and the water is set, the oil and the water are separated for a certain time, and after the boundary between the oil and the water is higher than the set height, a certain amount of water is discharged, so that the water is always maintained within the set volume, the oil gradually accumulates in the separation chamber 16, and overflows into the oil storage chamber 18 after the oil accumulates to the set height, and in the accumulating process, the oil-water separation effect is further ensured, and the incomplete oil-water separation is avoided.
In this embodiment, the separation chamber 16 is divided into a standing chamber and a liquid inlet chamber which are communicated with each other at the bottom by the separation partition 26, so that the influence of the upper layer floating oil mixed liquid which continuously and newly enters the separation chamber 16 on the stability of oil-water separation is avoided, the stability of overflow oil after the height of oil in the standing chamber is set to be high is ensured, and the stability of monitoring the boundary between oil and water is also ensured. The porous structure plate or the reticular structure plate is adopted as the separation baffle plate 26, so that the standing cavity and the liquid inlet cavity can be communicated through the pore structure on the separation baffle plate 26, the liquid level of the liquid in the liquid inlet cavity is the same as that of the liquid in the standing cavity, the more accumulated the liquid in the liquid inlet cavity is avoided along with the discharge of the water liquid at the bottom, the more the water in the gas well to be treated is blocked, and the liquid in the liquid inlet cavity can flow to the standing cavity; the porous structure plate or the net structure plate is used as the separation baffle plate 26 to reduce the influence of oil-water descending impact liquid in the liquid inlet cavity on the control floating body 20 in the standing cavity, and the separation baffle plate 26 with the porous or net structure can ensure that the oil-water interface heights at two sides are basically consistent.
Further, the height of the boundary between the oil and the water in the standing cavity is monitored by arranging a control floating body 20 in the standing cavity, wherein the density of the control floating body 20 is larger than that of the oil to be separated but smaller than that of the water; the control floating body 20 is connected with a water outlet plug 19 at the water outlet at the bottom of the separation cavity 16; when the floating body 20 is controlled to rise to the height of the first dividing line, the water outlet plug 19 is driven to open the water outlet; as the water is discharged, the boundary between the oil and the water in the standing cavity is lowered along with the discharge of the water, and when the boundary between the oil and the water is lower than the first boundary, the floating body 20 is controlled to be lowered and the water outlet plug 19 is driven to block the water outlet.
Further, the control float 20 is restrained from moving in the horizontal direction during the ascent or descent of the control float 20 along with the boundary line between the oil and the water in the separation chamber 16.
Further, the control floating body 20 is limited to move horizontally by a connecting rod 21 arranged in the separation chamber 16, the connecting rod 21 comprises a vertical section and a horizontal section, the control floating body 20 is connected to the upper part of the vertical section, one end of the horizontal section is connected to the lower part of the vertical section, and the other end of the horizontal section is hinged to the inner side wall of the separation chamber 16; the water outlet plug 19 is fixedly connected below the horizontal section.
Further, the vertical section and the horizontal section are rotatably connected, so that the influence of the inclination of the vertical section caused by the rotation of the horizontal section on the force transmission can be avoided, and the stability and the reliability of control are better ensured.
Further, the set second boundary line height is set by setting the height of the control float 20 on the vertical section. Specifically, an external thread is arranged on the vertical section, and a threaded hole is vertically arranged on the control floating body 20 in a penetrating manner and is screwed on the vertical section. Thus, when needed, the floating body 20 can be conveniently controlled by rotation, the height position of the floating body on the vertical section can be adjusted, and the stability of liquid outlet and water outlet can be better ensured.
Further, a lock nut 22 is also screwed onto the vertical section above the control float 20. Thus, the locking nut can be abutted against the control floating body 20 to achieve the locking effect.
In this embodiment, the control floating body 20 is used to monitor the boundary between oil and water, and the physical mode is used to monitor the boundary, so that the stability is better than the mode of setting up a liquid level monitoring sensor, and the misoperation caused by fluctuation in the electronic monitoring mode is avoided. The density of the control floating body 20 is smaller than that of the oil to be separated and is larger than that of the water liquid, the control floating body 20 can sink into the oil and float on the water liquid, so that the control floating body is always positioned at the boundary position of the oil and the water liquid, rises along with the rising of the boundary of the oil and the water liquid, falls down and falls down, and the monitoring stability of the boundary of the oil and the water liquid is improved.
In this embodiment, the control floating body 20 is used to control the opening and closing of the water outlet, so as to avoid the erroneous opening of the water outlet caused by the horizontal movement of the control floating body 20, therefore, the horizontal movement of the control floating body 20 needs to be limited, so that the control floating body 20 only rises or falls along with the boundary between the oil liquid and the water liquid. The invention adopts a simple connecting rod 21 to realize the limitation of controlling the horizontal movement of the floating body 20, and the height setting of the boundary line between oil liquid and water liquid can be changed by controlling the height setting of the floating body 20 on the vertical section of the connecting rod 21, so that the invention has simple structure, convenient realization and high stability.
Further, the gas in the upper layer oil-slick mixture is discharged before the upper layer oil-slick mixture is continuously pumped into the separation chamber 16.
In this embodiment, the gas in the upper layer floating oil mixed solution is discharged, so that air mixed in the mixed solution can be prevented from entering the closed container, the safety is influenced due to the fact that the air pressure in the closed container is increased, and the explosion-proof safety performance of the closed container is better improved.
Further, the gas in the upper layer floating oil mixed liquid is discharged by arranging a transition box 23 on the separation cavity 16, the lower part of the transition box 23 is respectively provided with a plurality of liquid leakage holes, one end of the transition box 23 is connected with the outlet end of a conveying pipeline 3 for pumping the upper layer floating oil mixed liquid, and the upper part of the other end is provided with an air outlet pipe 24 externally connected to the outside of the closed container; the upper layer oil-slick mixed liquid falls into the separating cavity 16 through the liquid leakage hole, and the gas in the upper layer oil-slick mixed liquid is discharged out of the closed container through the gas outlet pipe 24.
Further, the end of the air outlet pipe 24 extending out of the closed container is bent downwards, so that sundries are prevented from entering from the air outlet pipe 24.
Further, a plurality of traction wires 25 which hang down to the bottom of the transition box 23 are fixedly arranged on the upper side wall of the inner cavity of the box.
In this embodiment, the gas in the upper layer floating oil mixture is discharged by arranging the transition box 23, so that the structure is simple, the implementation is convenient, and the cost is low. The mouth of the air outlet pipe 24 is arranged in a downward bending way. Entry of debris from the outlet duct 24 can be better avoided. The upper side wall of the inner cavity of the transition box 23 is also fixedly provided with a plurality of traction wires 25 which droop to the bottom of the box. Therefore, because the viscosity of the oil component is large, under the action of traction force generated by leakage under the liquid leakage hole, the small bubbles in the part mixed with the oil are difficult to overflow in a short transition time, so that the traction wire 25 is favorable for the bubbles in the oil to be attached and converged on the traction wire and overflow to the upper end of the transition box 23 along the traction wire, and the gas-liquid separation effect is further improved.
Further, when the level of the oil in the separation chamber 16 exceeds a predetermined oil level, the oil overflows into the oil storage chamber 18 at one side of the separation chamber 16.
Further, the preset oil height is set by controlling the height of the overflow partition 17 between the oil storage chamber 18 and the separation chamber 16, and when the oil level in the separation chamber 16 is higher than the height of the overflow partition 17, the oil overflows from the overflow partition 17 to the oil storage chamber 18.
In this embodiment, the overflow partition 17 is provided to divide the closed container into the oil storage chamber 18 and the separation chamber 16, and the arrangement of the oil storage chamber 18 ensures the stability of the oil overflowed from the overflow partition 17, and at the same time, ensures the stability of the operation of the control float 20.
Further, when the oil level in the oil storage chamber 18 is higher than the set level, the oil outlet at the bottom of the oil storage chamber 18 is opened to discharge the oil.
Further, the height of the oil in the oil storage cavity 18 is detected by a liquid level detection sensor 29 arranged in the oil storage cavity 18, and when the liquid level detection sensor 29 detects that the height of the oil in the oil storage cavity 18 is higher than a set height, an oil outlet at the bottom of the oil storage cavity 18 is opened to discharge the oil.
In the present embodiment, the discharge of the oil from the oil reservoir 18 is accelerated by providing the liquid level detection sensor 29 in the oil reservoir 18 and providing the oil discharge pump 28, and automatic control is achieved. And (3) returning the oil with poor oil quality to the gas field pool 1, and separating the oil again to improve the quality of the separated oil.
Further, the oil outlet is connected to an oil outlet pipe 30, and an oil outlet pump 28 is connected to the oil outlet pipe 30.
Further, the water outlet is connected with a return pipeline 5, and the water liquid discharged from the water outlet flows back into the gas field pool 1 through the return pipeline 5.
Further, when the oil quality in the oil storage chamber 18 is poor, the poor oil is returned to the pool 1.
Further, an oil outlet pipeline 30 connected with an oil outlet is connected with a backflow pipeline 5 connected with a water outlet, when the oil quality in the oil outlet cavity is poor, switching of electromagnetic valves on the oil outlet pipeline 30 and the backflow pipeline 5 is controlled, and oil in the oil storage cavity 18 is backflow into the gas field pool 1 through the backflow pipeline 5.
As a specific implementation structure of this embodiment, referring to fig. 3 of the specification, a pump chamber 27 is further disposed in the tank 15 below the separation chamber 16 and the oil storage chamber 18, an oil outlet pump 28 is disposed in the pump chamber 27, an oil outlet is disposed at the bottom of the oil storage chamber 18, and an oil outlet pipe 30 is connected to the outside of the tank 15, and the oil outlet pump 28 is disposed on the oil outlet pipe 30. The oil stored in the oil storage chamber 18 is conveniently pumped out by the oil discharge pump 28. The suction pump 7 on the transfer pipe 3 is mounted in the pump chamber 27.
The oil storage cavity 18 is also internally provided with a liquid level detection sensor 29, the liquid level detection sensor 29 is connected with the control center 4, and the control center 4 is connected with the oil outlet pump 28. Thus, the liquid level of the oil is conveniently detected by the liquid level detection sensor 29, and the oil outlet pump 28 is controlled to pump out the oil after the preset height is reached, so that automatic control is realized.
A communication pipeline is further arranged between the oil outlet pipeline 30 and the return pipeline 5 in the pump chamber 27, and an electric control valve is respectively arranged among the oil outlet pipeline 30, the return pipeline 5 and the communication pipeline and is connected with the control center 4. In this way, the switching can be controlled by the electric control valve, and when the oil quality in the oil storage cavity 183 is poor, the oil can also flow back into the gas field pool 1 through the backflow pipeline 5.
Further, a control chamber 32 is also provided in the case 15 above the separation chamber 16 and the oil storage chamber 18, and a control center 4 and a battery 33 are provided in the control chamber 32.
Example 3
As a further preferred embodiment of the present invention, this embodiment is further detailed supplement and explanation of the technical solution of the present invention based on embodiment 1 or embodiment 2 described above.
In the present embodiment, the detection of the thickness of the upper layer floating oil mixture is achieved by the floating oil detecting means 2. The floating oil detection device 2 is a device capable of detecting the thickness of the upper floating oil mixed solution in the prior art, and is implemented by directly purchasing the prior functional product.
Example 4
As a further preferred embodiment of the present invention, this embodiment is further detailed supplement and explanation of the technical solution of the present invention based on embodiment 1 or embodiment 2 described above.
In this embodiment, the thickness of the upper layer floating oil mixture is detected by detecting the distance between the boundary between the water liquid and the upper layer floating oil mixture in the gas field pool 1 and the liquid level of the upper layer floating oil mixture.
Further, a detection float with density smaller than that of water is arranged in the gas field pool 1, a plurality of oil sensors are arranged on the detection float from the height direction, the thickness of the upper layer floating oil mixed liquid is reliably detected by the plurality of oil sensors on the detection float from the height direction, and the structure is simple and reliable.
Further, the plurality of oil sensors are connected with the control center 4, when the thickness of the upper layer floating oil mixed solution is higher than the set highest thickness, the control center 4 controls the floating oil extracting device to start extracting the upper layer floating oil mixed solution into the separating cavity 16 of the closed container; along with the discharge of the upper layer floating oil mixed solution, the thickness of the upper layer floating oil mixed solution in the gas field pool 1 is reduced along with the discharge, and when the thickness of the upper layer floating oil mixed solution is lower than the set minimum thickness, the control center 4 controls the floating oil extraction device to be closed.
Further, the floating oil extraction device comprises a supporting frame, a supporting floater 6 with the density smaller than that of the floating oil is arranged on the periphery of the supporting frame, the supporting frame is kept in a suspended state, the floating oil extraction device further comprises a flexible conveying pipeline 3, a suction pump 7 is arranged on the conveying pipeline 3, the conveying pipeline 3 is provided with an outlet end connected with the oil-water separation storage device, the oil extraction device further is provided with an inlet end connected to the supporting frame, an oil suction cylinder 8 with the diameter larger than that of the conveying pipeline 3 is vertically and fixedly arranged on the supporting frame, an oil suction port for sucking upper-layer floating oil mixed liquid is arranged at the upper end of the oil suction cylinder 8, and the lower end of the oil suction cylinder 8 is connected with the inlet end of the conveying pipeline 3.
Further, an oil sensor is arranged at the upper port of the oil suction cylinder 8, and the oil sensor is connected with the control center 4. Thus, the upper end of the oil suction cylinder 8 is detected to be positioned in the oil liquid, and then the suction pump 7 is started to work.
Further, before the upper layer oil-float mixture is flowed into the oil suction cylinder 8, the floating objects in the upper layer oil-float mixture are filtered and intercepted.
Further, filtering and intercepting floating objects in the upper layer floating oil mixed solution is realized by arranging a circle of grating on the periphery of the oil suction cylinder 8, wherein the grating comprises a closed separation cylinder 9 which is fixed on a support frame below, a plurality of vertical rods 10 which are vertically and fixedly arranged upwards are uniformly distributed at the upper end of the separation cylinder 9, and an oil suction port is positioned in the area where the vertical rods 10 are positioned; the upper layer floating oil mixed solution flows in through the gaps between the vertical rods 10, and impurities in the upper layer floating oil mixed solution are isolated outside the vertical rods 10.
Further, the support frame comprises a bottom plate 11 horizontally arranged below, the oil suction cylinder 8 is fixedly arranged in the middle of the bottom, a vertical upward support rod 12 is arranged on the periphery of the bottom plate 11, and the upper end of the support rod 12 is connected with the supporting floater 6.
Further, when the suction pump 7 pumps the upper layer oil-spill mixture, the suction effect of the suction pump 7 is adjusted.
Further, the suction effect of the suction pump 7 is adjusted by adjusting the height of the oil suction cylinder 8, the oil suction cylinder 8 comprises an upper half cylinder and a lower half cylinder which are screwed together by threads, the overall height of the oil suction cylinder 8 is adjusted by the threaded fit of the upper half cylinder and the lower half cylinder, and then the height of an oil suction port entering the upper layer floating oil mixed liquid is adjusted.
Further, the suction effect of the suction pump 7 is adjusted by adjusting the interval distance between the lower surface of the upper cover plate 13 and the upper layer of floating oil mixed liquid, the upper end of the vertical rod 10 extends upwards to form the upper layer of floating oil mixed liquid, the upper cover plate 13 is fixed horizontally, and the oil suction cylinder 8 is positioned below the middle part of the upper cover plate 13.
Further, the distance between the lower surface of the upper cover plate 13 and the upper layer oil-water mixture is adjusted by the height adjusting mechanism of the upper cover plate 13, the height adjusting mechanism of the upper cover plate 13 comprises a supporting rod 12, a through hole is vertically arranged in the middle of the supporting floater 6, the supporting rod 12 is slidably arranged in the through hole, an external thread is arranged on the supporting rod 12, and a height adjusting nut 14 of the supporting floater is further screwed on the supporting rod 12 at the upper end of the through hole.
Further, the periphery of the upper cover plate 13 is outwards beyond the range of the supporting frame, and a yielding hole is formed in the upper cover plate 13 corresponding to the position of the supporting floater 6.
In this embodiment, a space is reserved between the lower surface of the upper cover plate 13 and the upper layer oil-floating mixed liquid, so that when the upper layer oil-floating mixed liquid is thinner, the influence of air above the upper layer oil-floating mixed liquid on the suction of the upper layer oil-floating mixed liquid can be better shielded, excessive air is prevented from being sucked, the suction force of the oil suction port on the upper layer oil-floating mixed liquid can form negative pressure through the upper cover plate 13 to better extend to the periphery, and the effect that the oil around is converged to the oil suction port is improved. The spacing distance is usually 0.5-1.5 cm (preferably about 1 cm), and if it is less than 0.5 cm, it is easy to cause viscosity of the upper layer oil-slick mixture in contact with the lower surface of the upper cover plate 13 during the suction flow, and if it is more than 1.5 cm, it is difficult to better generate negative pressure to enhance the suction effect of the upper layer oil-slick mixture around.
In the present embodiment, the relative height position of the support rod 12 and the support float 6 is adjusted by rotating the height adjustment nut 14 of the support float. The supporting floater 6 floats on the liquid level all the time, the height position of the supporting floater is unchanged, and the supporting rods 12 and the upper cover plate 13 are relatively and fixedly arranged by virtue of the supporting frames and the grids, so that the height of the upper cover plate 13 can be adjusted. As can be seen from the above adjustment process, there is an adjustment linkage relationship between the structure for adjusting the height of the upper cover plate 13 from the upper end surface of the layer oil-floating mixed liquid and the structure for adjusting the height of the oil suction port at the upper end of the oil suction cylinder 8; therefore, in the adjusting process, the height of the oil suction port at the upper end of the oil suction cylinder 8 is changed due to the change of the height of the support frame, and the height of the oil suction port can be readjusted through the structure of the oil suction cylinder 8, so that the oil suction cylinder is positioned at a proper height position, and the oil suction effect is ensured.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (32)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310562319.2A CN118987696B (en) | 2023-05-18 | 2023-05-18 | A method for treating wastewater from gas well production. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310562319.2A CN118987696B (en) | 2023-05-18 | 2023-05-18 | A method for treating wastewater from gas well production. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118987696A true CN118987696A (en) | 2024-11-22 |
| CN118987696B CN118987696B (en) | 2026-03-17 |
Family
ID=93478501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310562319.2A Active CN118987696B (en) | 2023-05-18 | 2023-05-18 | A method for treating wastewater from gas well production. |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118987696B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120081460A (en) * | 2025-04-23 | 2025-06-03 | 鲁控环保科技(连云港)有限公司 | A separation device for oily wastewater |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266586A (en) * | 2001-03-09 | 2002-09-18 | Nippon Engineer Service | Method and apparatus for recovering underground oil |
| CN101711927A (en) * | 2009-11-13 | 2010-05-26 | 大庆海洋石油技术开发有限公司 | Oil-water-gas automatic separation and liquid discharge device |
| JP2014036931A (en) * | 2012-08-17 | 2014-02-27 | Kansai Electric Power Co Inc:The | Oil/water separation system |
| CN106995226A (en) * | 2016-01-25 | 2017-08-01 | 陈太宏 | A kind of oil slick collecting system and its collection method |
| CN107268552A (en) * | 2017-06-19 | 2017-10-20 | 常州大学 | Oil slick collecting system |
| CN108261877A (en) * | 2018-01-11 | 2018-07-10 | 林成武 | Oil smoke dust peculiar smell separating centrifuge |
| CN208667175U (en) * | 2018-06-22 | 2019-03-29 | 河南康百万环保科技有限公司 | Oil spill skimmer |
| CN112691436A (en) * | 2020-12-21 | 2021-04-23 | 中车北京南口机械有限公司 | Medium transporting and heat exchanging device of iron core in electromagnetic device and working method of three-phase separator |
| CN215828407U (en) * | 2021-08-20 | 2022-02-15 | 重庆新高机电有限公司 | Cutting fluid oil slick collector |
-
2023
- 2023-05-18 CN CN202310562319.2A patent/CN118987696B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266586A (en) * | 2001-03-09 | 2002-09-18 | Nippon Engineer Service | Method and apparatus for recovering underground oil |
| CN101711927A (en) * | 2009-11-13 | 2010-05-26 | 大庆海洋石油技术开发有限公司 | Oil-water-gas automatic separation and liquid discharge device |
| JP2014036931A (en) * | 2012-08-17 | 2014-02-27 | Kansai Electric Power Co Inc:The | Oil/water separation system |
| CN106995226A (en) * | 2016-01-25 | 2017-08-01 | 陈太宏 | A kind of oil slick collecting system and its collection method |
| CN107268552A (en) * | 2017-06-19 | 2017-10-20 | 常州大学 | Oil slick collecting system |
| CN108261877A (en) * | 2018-01-11 | 2018-07-10 | 林成武 | Oil smoke dust peculiar smell separating centrifuge |
| CN208667175U (en) * | 2018-06-22 | 2019-03-29 | 河南康百万环保科技有限公司 | Oil spill skimmer |
| CN112691436A (en) * | 2020-12-21 | 2021-04-23 | 中车北京南口机械有限公司 | Medium transporting and heat exchanging device of iron core in electromagnetic device and working method of three-phase separator |
| CN215828407U (en) * | 2021-08-20 | 2022-02-15 | 重庆新高机电有限公司 | Cutting fluid oil slick collector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120081460A (en) * | 2025-04-23 | 2025-06-03 | 鲁控环保科技(连云港)有限公司 | A separation device for oily wastewater |
| CN120081460B (en) * | 2025-04-23 | 2026-02-13 | 鲁控环保科技(连云港)有限公司 | A separation device for oily wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118987696B (en) | 2026-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101804265B (en) | Full-automatic liquid level self-corrective oil-water separator | |
| CN118987696B (en) | A method for treating wastewater from gas well production. | |
| US4088578A (en) | Process and apparatus for separating oil from water contaminated with oil | |
| CN219792602U (en) | Oily sewage skimming equipment | |
| CN207928785U (en) | A kind of oil-gas-water three-phase separation | |
| CN107055686A (en) | A kind of floating level oil catcher and oily water separating equipment | |
| CN216837243U (en) | Oil separation tank for separating oil-containing wastewater | |
| CN201632093U (en) | Dissolved air flotation three-phase separator | |
| CN107721016A (en) | A kind of oil-polluted water grease removal treatment device and processing method | |
| CN205435067U (en) | Portable oil slick is retrieved and oil -water separator | |
| CN207468254U (en) | Tank in a kind of tank | |
| CN207126169U (en) | A kind of Multi-stage oil-water separation facility | |
| CN210261223U (en) | Oil-water separation device | |
| CN219239323U (en) | Water-oil separation device for chemical machinery | |
| CN201981036U (en) | Floating oil collecting device for water collecting well of hydroelectric power station | |
| CN110217854B (en) | Oil-water separation device and separation method | |
| CN215480344U (en) | Automatic oil extraction device of high COD salt water MVR vaporization system | |
| CN201052422Y (en) | Automatic oil water separation device | |
| GB2435226A (en) | Separation apparatus and method | |
| CN118987695A (en) | Oil-water separation method for gas field water treatment | |
| CN219646765U (en) | Oil-water separation device | |
| CN219907124U (en) | A floating oil extraction device | |
| CN208684479U (en) | A kind of chemical machinery oil receiving equipment | |
| CN209307464U (en) | The device of oil slick in earth solution is removed in Rare-Earth Extraction Process | |
| CN217350946U (en) | Oil-water separation device for waste mineral oil regeneration treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |