An oilfield wastewater recovery device
Patent Information
- Application Number
- CN202521291763.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-06-23
AI Technical Summary
[0004]本实用新型的主要目的在于提供一种油田污水回收装置，可以有效解决上述中所提出的现有的部分技术中，在油田污水油、水分离时，由于油滴难以聚并，油水分离需要更长的停留时间，增加了污水处理的时间，可能导致增加了运行成本，包括能源消耗和人工维护成本，缺少可以提升油、水分离速度的装置，且部分装置在对分离后的油进行清理时，缺乏自动清理的装置，可能需要操作人员手动刮除，导致操作人员的工作量增大的问题
1、本装置通过设计的回收机构，污水通过抽取机构处抽至回收罐的内部，通过加药机构处根据抽取机构处抽取的污水量进行定量加药，然后驱动箱二驱动搅拌轴和搅拌叶片对回收罐内部加药后的污水进行搅拌混合，从而在破乳剂的作用下，将污水中的油液与水进行分离，破乳剂能够有效破坏污水中的油水乳化体系，使微小的油滴聚集成较大的油滴，从而促进油和水的快速分离，达到便于对污水进行去油的效果，在一定的程度上有助于提高污水处理的效率，和降低后续处理工艺的负荷。
Smart Images
Figure CN224740869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater recycling technology, and in particular to an oilfield wastewater recycling device. Background Technology
[0002] During the oil extraction process, a large amount of oilfield wastewater is generated, also known as oilfield production wastewater or oilfield operation wastewater. This wastewater mainly comes from formation water associated with oil well production, drilling mud water, well washing water, and flushing water for oilfield surface facilities. Oilfield wastewater typically contains high concentrations of oil, suspended solids, and potentially corrosive substances and bacteria. If discharged directly without treatment, it will severely pollute the soil, surface water, and groundwater, damaging the ecological environment.
[0003] In some existing technologies, when separating oil and water in oilfield wastewater, the oil droplets are difficult to coalesce, requiring a longer residence time for oil-water separation. This increases the wastewater treatment time and may lead to increased operating costs, including energy consumption and manual maintenance costs. There is a lack of devices that can improve the speed of oil-water separation, and some devices lack automatic cleaning devices when cleaning the separated oil, which may require operators to scrape it off manually, increasing the workload of operators. Utility Model Content
[0004] The main objective of this invention is to provide an oilfield wastewater recovery device that can effectively solve the problems mentioned above in some existing technologies. These problems include: during oil-water separation in oilfield wastewater, the oil droplets are difficult to coalesce, requiring a longer residence time and increasing wastewater treatment time, potentially leading to increased operating costs, including energy consumption and manual maintenance costs; a lack of devices to improve the oil-water separation speed; and the absence of automatic cleaning mechanisms for the separated oil, requiring manual scraping by operators, which increases their workload.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An oilfield wastewater recovery device includes a recovery mechanism. A pipe pile is fixedly connected to the upper left side of the recovery mechanism. An extraction mechanism is installed on the left side of the rear top of the recovery mechanism. A dosing mechanism is installed in the middle of the top of the recovery mechanism. An oil skimming mechanism is installed on the upper part of the inner surface of the recovery mechanism. A second drive box is installed in the middle of the bottom of the recovery mechanism. The bottom of the oil skimming mechanism and the second drive box are connected to a second support frame in contact. A drainage mechanism is installed on the right side of the bottom of the recovery mechanism. A data processing unit is fixedly connected to the right side of the rear top of the recovery mechanism.
[0006] Preferably, the recycling mechanism includes a recycling tank, a top cover is snapped onto the top of the recycling tank, a sealing ring is fixedly connected to the middle of the bottom of the inner surface of the recycling tank, and a bearing is fixedly connected to the inner surface of the sealing ring.
[0007] Preferably, a stirring shaft is rotatably connected to the inner surface of the bearing, stirring blades are fixedly connected to the outer surface of the stirring shaft, the bottom of the stirring shaft penetrates the inner surface of the bearing, the bottom of the stirring shaft is rotatably connected to the output end of the second drive box, and a base plate is symmetrically fixedly connected to the bottom of the recovery tank.
[0008] Preferably, an electric valve seat is fixedly connected to the middle of the inner surface of the top cover, a meter body is fixedly connected to the top of the electric valve seat, and a dosing tank is fixedly connected to the top of the meter body.
[0009] Preferably, a pump is fixedly connected to the left side of the rear side of the top cover, a flow meter body is fixedly connected to the top of the pump, and a sewage recovery pipe is fixedly connected to the inner surface of the pump and the flow meter body.
[0010] Preferably, a chute is provided on the front side of the upper inside of the recycling tank, and an oil drain chute is provided on the right side of the upper inside of the recycling tank. A movable seat is slidably connected to the inner surface of the chute, and a scraper is fixedly connected to the rear end of the movable seat. A threaded rod is threadedly connected to the inner surface of the movable seat, and an adjusting rail is rotatably connected to the left and right ends of the outer surface of the threaded rod. The front side of the outer surface of the movable seat is slidably connected to the inner side of the adjusting rail, and a drive box is fixedly connected to the right end of the adjusting rail.
[0011] Preferably, an oil storage tank is fixedly connected to the upper right side of the recovery tank, a support frame is fixedly connected to the rear right side of the movable seat, a door panel is fixedly connected to the right end of the support frame, the door panel is engaged with the inner side of the oil drain trough, and the oil storage tank is located on the lower right side near the oil drain trough.
[0012] Preferably, an electric valve seat two is fixedly connected to the right side of the bottom of the inner surface of the recycling tank, a drain pipe is fixedly connected to the bottom of the electric valve seat two, a water pump is fixedly connected to the outer surface of the right end of the drain pipe, a water storage tank is fixedly connected to the bottom of the water pump, and the bottom of the water storage tank is placed on the lower side of the top right part of the support frame two.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This device utilizes a designed recovery mechanism. Wastewater is drawn into the recovery tank via an extraction mechanism. A dosing mechanism then adds a quantitative amount of chemicals based on the volume of wastewater extracted. The drive unit then drives the stirring shaft and blades to mix the chemically treated wastewater inside the recovery tank. Under the action of the demulsifier, the oil and water in the wastewater are separated. The demulsifier effectively disrupts the oil-water emulsion system in the wastewater, causing tiny oil droplets to aggregate into larger droplets, thus promoting rapid oil and water separation. This facilitates the removal of oil from the wastewater, improving wastewater treatment efficiency and reducing the load on subsequent treatment processes.
[0014] 2. This device separates oil and water in wastewater through a designed oil skimming mechanism. Since oil is less dense than water, it naturally floats on the water surface, forming a clear stratification phenomenon. The drive box drives the threaded rod and the moving seat to rotate, thereby achieving the effect of the moving seat moving left and right with the scraper, support frame and door panel. Under the movement of the scraper, the oil floating on the top of the water inside the recovery tank can be scraped into the oil storage tank for temporary storage. The automated oil cleaning is more efficient than manual scraping, and the scraper is a straight plate design, which can avoid the situation of material blockage compared to filter plates. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the recycling mechanism of this utility model; Figure 3 This is a schematic diagram of the drug dispensing mechanism of this utility model; Figure 4 This is a schematic diagram of the explosion effect structure of the oil skimming mechanism of this utility model; Figure 5 This is a partial cross-sectional view of the skimming mechanism of this utility model.
[0016] In the diagram: 1. Recycling mechanism; 101. Recycling tank; 102. Agitator shaft; 103. Agitator blades; 104. Sealing ring; 105. Bearing; 106. Base plate; 107. Top cover; 2. Pipe pile; 3. Extraction mechanism; 301. Sewage recycling pipe; 302. Extraction pump; 303. Flow meter body; 4. Dosing mechanism; 401. Dosing tank; 402. Meter body; 403. Electric valve seat 1; 5. Skimming oil. Mechanism; 501, Adjustable rail seat; 502, Drive box one; 503, Moving seat; 504, Threaded rod; 505, Scraper; 506, Support frame one; 507, Door panel; 508, Oil storage tank; 509, Slide groove; 510, Oil drain groove; 6, Drive box two; 7, Drainage mechanism; 701, Electric valve seat two; 702, Drain pipe; 703, Water pump; 704, Water storage tank; 8, Support frame two; 9, Data processing unit. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0018] Example 1, as Figure 1 As shown, an oilfield wastewater recovery device includes a recovery mechanism 1. A pipe pile 2 is fixedly connected to the upper left side of the recovery mechanism 1. An extraction mechanism 3 is installed on the left side of the rear top of the recovery mechanism 1. A dosing mechanism 4 is installed in the middle of the top of the recovery mechanism 1. An oil skimming mechanism 5 is installed on the upper part of the inner surface of the recovery mechanism 1. A drive box 2 6 is installed in the middle of the bottom of the recovery mechanism 1. The bottoms of the oil skimming mechanism 5 and the drive box 2 6 are connected to a support frame 2 8 in contact. A drainage mechanism 7 is installed on the right side of the bottom of the recovery mechanism 1. A data processing unit 9 is fixedly connected to the right side of the rear top of the recovery mechanism 1.
[0019] In this embodiment, the demulsifier is temporarily stored inside the dosing tank 401. The sewage is pumped to the height near the lower side of the oil drain tank 510 inside the recovery tank 101 by the extraction pump 302 and the sewage recovery pipe 301. The flow meter body 303 measures the pumped sewage and transmits the monitored sewage volume to the data processing unit 9. The data processing unit 9 analyzes and processes the flow according to the pre-set program and converts the data into an electrical signal to control the opening of the electric valve seat 403. The meter body 402 limits the amount of demulsifier inside the dosing tank 401 so that the total amount of demulsifier and sewage added to the recovery tank 101 by the dosing tank 401 is in the optimal ratio, avoiding the effect of oil and water separation due to too much or too little agent. The drive box 26 drives the stirring shaft 102 with stirring blades 103 to rotate and stir inside the middle and lower side of the recovery tank 101, which fully stirs and blends the wastewater mixture with added demulsifier, thereby promoting the separation of oil and water. After the oil and water in the sewage are separated, the oil will naturally float on the water surface because the density of oil is less than that of water, forming an obvious stratification phenomenon. Then, the threaded rod 504 and the moving seat 503 are driven by the drive box 502 to rotate in the forward or reverse direction, thereby realizing the effect of the moving seat 503 moving left and right with the scraper 505, the support frame 506 and the door panel 507. As the scraper 505 moves from left to right, the door panel 507 is removed from the inside of the oil drain trough 510 along with the scraper 505. This allows the oil pushed out of the recovery tank 101 when the scraper 505 pushes to the right, and is pushed into the oil storage tank 508 from the feed port on the top left side of the oil storage tank 508 for temporary storage, thus achieving the effect of cleaning the oil. Then, open the electric valve seat 2 701, and the water pump 703 can pump the remaining water inside the recovery tank 101 from the bottom to the water storage tank 704, thereby achieving the effect of separating oil and water in the sewage. When the sewage recovery pipe 301 is not in use, it can be wrapped around the outside of the pipe pile 2 to achieve the effect of storage. The overall operation is simple and convenient.
[0020] For details, please refer to Figure 1 and Figure 2 In this embodiment, the recycling mechanism 1 includes a recycling tank 101, a top cover 107 is snapped onto the top of the recycling tank 101, a sealing ring 104 is fixedly connected to the middle of the bottom of the inner surface of the recycling tank 101, and a bearing 105 is fixedly connected to the inner surface of the sealing ring 104. Further reference Figure 1 and Figure 2 In this embodiment, a stirring shaft 102 is rotatably connected to the inner surface of the bearing 105, a stirring blade 103 is fixedly connected to the outer surface of the stirring shaft 102, the bottom of the stirring shaft 102 passes through the inner surface of the bearing 105, the bottom of the stirring shaft 102 is rotatably connected to the output end of the drive box 6, and a bottom plate 106 is symmetrically fixedly connected to the bottom of the recovery tank 101. Further reference Figure 2 and Figure 3 In this embodiment, an electric valve seat 403 is fixedly connected to the middle of the inner surface of the top cover 107, a meter body 402 is fixedly connected to the top of the electric valve seat 403, and a dosing tank 401 is fixedly connected to the top of the meter body 402. Further reference Figure 1 and Figure 2In this embodiment, a pump 302 is fixedly connected to the left side of the rear side of the top of the top cover 107, a flow meter body 303 is fixedly connected to the top of the pump 302, and a sewage recovery pipe 301 is fixedly connected to the inner surface of the pump 302 and the flow meter body 303. Through the designed recycling mechanism 1, the sewage is pumped into the recycling tank 101 through the extraction mechanism 3. The dosing mechanism 4 adds a quantitative amount of chemicals according to the amount of sewage extracted by the extraction mechanism 3. Then, the drive box 2 6 drives the stirring shaft 102 and the stirring blades 103 to stir and mix the sewage inside the recycling tank 101 after adding chemicals. Thus, under the action of the demulsifier, the oil and water in the sewage are separated. Demulsifiers can effectively disrupt the oil-water emulsion system in wastewater, causing tiny oil droplets to aggregate into larger droplets, thereby promoting rapid separation of oil and water and facilitating the removal of oil from wastewater. To a certain extent, this helps improve the efficiency of wastewater treatment and reduce the load on subsequent treatment processes.
[0021] Example 2: Based on Example 1, this example adds an oil skimming mechanism 5 for scraping and cleaning the separated oil in the sewage, and a drainage mechanism 7 for discharging the separated water. By setting the oil skimming mechanism 5, it is possible to facilitate the cleaning of oil and reduce the problem of clogging at the cleaning point. By setting the drainage mechanism 7, it is possible to facilitate drainage.
[0022] For details, please refer to Figure 2 , Figure 4 and Figure 5 In this embodiment, a chute 509 is provided on the front side of the upper inside of the recycling tank 101, and an oil drain chute 510 is provided on the right side of the upper inside of the recycling tank 101. A movable seat 503 is slidably connected to the inner surface of the chute 509. A scraper 505 is fixedly connected to the rear end of the movable seat 503. A threaded rod 504 is threadedly connected to the inner surface of the movable seat 503. The left and right ends of the outer surface of the threaded rod 504 are rotatably connected to an adjusting rail seat 501. The front side of the outer surface of the movable seat 503 is slidably connected to the inner side of the adjusting rail seat 501. A drive box 502 is fixedly connected to the right end of the adjusting rail seat 501. Further reference Figure 2 , Figure 4 and Figure 5 In this embodiment, an oil storage tank 508 is fixedly connected to the upper side of the right end of the recycling tank 101, a support frame 506 is fixedly connected to the rear side of the right end of the movable seat 503, a door panel 507 is fixedly connected to the right end of the support frame 506, the door panel 507 is engaged with the inner side of the oil drain 510, and the oil storage tank 508 is located on the lower side near the right side of the oil drain 510. Further reference Figure 1 and Figure 2In this embodiment, an electric valve seat 701 is fixedly connected to the right side of the bottom of the inner surface of the recycling tank 101. A drain pipe 702 is fixedly connected to the bottom of the electric valve seat 701. A water pump 703 is fixedly connected to the outer surface of the right end of the drain pipe 702. A water storage tank 704 is fixedly connected to the bottom of the water pump 703. The bottom of the water storage tank 704 is placed on the lower side of the top right of the support frame 8. After the oil and water in the wastewater are separated by the designed oil skimming mechanism 5, the oil will naturally float on the water surface due to the lower density of the oil than the water, forming a clear stratification phenomenon. The threaded rod 504 and the moving seat 503 are driven to rotate by the drive box 502, so that the moving seat 503 can move left and right with the scraper 505, the support frame 506 and the door panel 507. Under the movement of the scraper 505, the oil floating on the top of the water inside the recovery tank 101 can be scraped into the oil storage tank 508 for temporary storage. The automatic oil cleaning is more efficient than manual scraping. Moreover, the scraper 505 is a straight plate design, which can avoid the situation of material blockage compared to the filter plate.
[0023] Both drive box 1 502 and drive box 2 6 in this solution include an outer mounting box, a drive motor and a controller. The drive motor and controller are installed inside the outer mounting box. The controller here can be a motor controller that is compatible with the drive motor in the prior art, and can control the switching and rotation speed of the drive motor. The metering device 402 in this solution can adopt the existing automatic quantitative metering equipment for demulsifiers, which supports multiple diameters, has high metering accuracy, and has explosion-proof function. It is suitable for both normal and high temperature media and meets the high precision and high efficiency requirements of demulsifier dosing devices. The flow monitoring meter body 303 in this solution can be a Doppler ultrasonic flow meter in the existing technology, which uses the Doppler effect to measure flow velocity and flow rate. It is suitable for sewage containing suspended solids, has high accuracy and is easy to install and maintain. The data processing unit 9 in this solution can adopt the existing ACU automation control unit, such as Eljoe ACU control unit (e.g., X7 series) or Siemens ACU series. ACU is designed for industrial automation, has real-time data processing capabilities, supports dynamic adaptive control, has a built-in multi-core processor, and a response time of up to milliseconds. It is suitable for applications with high real-time requirements, supports multiple industrial protocols, is easy to link with flow meters and electric valve actuators, and can integrate machine learning algorithms to achieve more intelligent control logic. It is suitable for occasions that require high-precision control and complex linkage logic, such as real-time monitoring and control in oilfield wastewater recovery devices. The pipe pile 2 in this scheme includes a toothed telescopic rod and a limiting circular plate. The limiting circular plate is installed at the end of the toothed telescopic rod away from the recycling mechanism 1. The toothed telescopic rod is adjustable, which is convenient to adjust according to the length of the sewage recycling pipe 301. Since the above devices are all very mature products in the prior art, they will not be described in detail in this application.
[0024] It should be noted that the specific installation method, circuit connection method and control method of the drive box 502 and drive box 6 used in this utility model are all conventional designs, and will not be described in detail in this utility model.
[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An oilfield wastewater recovery device, comprising a recovery mechanism (1), characterized in that: A pipe pile (2) is fixedly connected to the upper left side of the recovery mechanism (1). An extraction mechanism (3) is installed on the left side of the rear top of the recovery mechanism (1). A dosing mechanism (4) is installed in the middle of the top of the recovery mechanism (1). An oil skimming mechanism (5) is installed on the upper part of the inner surface of the recovery mechanism (1). A drive box II (6) is installed in the middle of the bottom of the recovery mechanism (1). A support frame II (8) is connected to the bottom of the oil skimming mechanism (5) and the drive box II (6). A drainage mechanism (7) is installed on the right side of the bottom of the recovery mechanism (1). A data processing unit (9) is fixedly connected to the right side of the rear top of the recovery mechanism (1).
2. The oilfield wastewater recovery device according to claim 1, characterized in that: The recycling mechanism (1) includes a recycling tank (101), a top cover (107) is snapped onto the top of the recycling tank (101), a sealing ring (104) is fixedly connected to the middle of the bottom of the inner surface of the recycling tank (101), and a bearing (105) is fixedly connected to the inner surface of the sealing ring (104).
3. The oilfield wastewater recovery device according to claim 2, characterized in that: The inner surface of the bearing (105) is rotatably connected to the stirring shaft (102), the outer surface of the stirring shaft (102) is fixedly connected to the stirring blade (103), the bottom of the stirring shaft (102) passes through the inner surface of the bearing (105), the bottom of the stirring shaft (102) is rotatably connected to the output end of the drive box (6), and the bottom of the recycling tank (101) is symmetrically fixedly connected to the bottom plate (106).
4. The oilfield wastewater recovery device according to claim 2, characterized in that: An electric valve seat (403) is fixedly connected to the middle of the inner surface of the top cover (107), a meter body (402) is fixedly connected to the top of the electric valve seat (403), and a dosing tank (401) is fixedly connected to the top of the meter body (402).
5. The oilfield wastewater recovery device according to claim 2, characterized in that: A pump (302) is fixedly connected to the left side of the rear side of the top cover (107). A flow meter body (303) is fixedly connected to the top of the pump (302). A sewage recovery pipe (301) is fixedly connected to the inner surface of the pump (302) and the flow meter body (303).
6. The oilfield wastewater recovery device according to claim 2, characterized in that: A chute (509) is provided on the front side of the upper inside of the recycling tank (101), and an oil drain trough (510) is provided on the right side of the upper inside of the recycling tank (101). A movable seat (503) is slidably connected to the inner surface of the chute (509). A scraper (505) is fixedly connected to the rear end of the movable seat (503). A threaded rod (504) is threadedly connected to the inner surface of the movable seat (503). An adjusting rail seat (501) is rotatably connected to the left and right ends of the outer surface of the threaded rod (504). The front side of the outer surface of the movable seat (503) is slidably connected to the inner side of the adjusting rail seat (501). A drive box (502) is fixedly connected to the right end of the adjusting rail seat (501).
7. The oilfield wastewater recovery device according to claim 6, characterized in that: An oil storage tank (508) is fixedly connected to the upper right side of the recycling tank (101), a support frame (506) is fixedly connected to the rear right side of the movable seat (503), a door panel (507) is fixedly connected to the right end of the support frame (506), the door panel (507) is engaged with the inner side of the oil drain trough (510), and the oil storage tank (508) is located on the lower right side near the oil drain trough (510).
8. The oilfield wastewater recovery device according to claim 2, characterized in that: An electric valve seat 2 (701) is fixedly connected to the right side of the bottom of the inner surface of the recycling tank (101). A drain pipe (702) is fixedly connected to the bottom of the electric valve seat 2 (701). A water pump (703) is fixedly connected to the outer surface of the right end of the drain pipe (702). A water storage tank (704) is fixedly connected to the bottom of the water pump (703). The bottom of the water storage tank (704) is placed on the lower side of the top right of the support frame 2 (8).