Natural gas extraction wastewater recycling device

Abstract

The utility model discloses a natural gas exploitation waste water recycling device which comprises a water inlet channel, one end of the water inlet channel is communicated with a filtering assembly used for filtering solid particles in waste water, one end of the filtering assembly is communicated with a conveying pipeline, and the surface of the conveying pipeline is communicated with a water pump. One end, far away from the filtering assembly, of the conveying pipeline is communicated with a separating assembly for separating oil and water; through the centrifugal tank, the oil storage hopper and other structures in the separation assembly, the second motor is used for driving the rotating disc to rotate, so that waste water generates centrifugal force in the centrifugal tank, the effect of effectively separating oil and water is achieved, through the separation tank, the oil storage hopper and other structures, separated oil dirt and water can be collected, and the oil and water separation efficiency is improved. And the oily wastewater is discharged or utilized through the oil discharge pipeline and the water discharge pipeline, so that the condition that the oily wastewater seriously pollutes the environment is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of natural gas exploitation wastewater treatment, specifically is a kind of natural gas exploitation wastewater recycling device. BACKGROUND

[0002] Natural gas reservoir is usually adjacent to aquifer or itself contains a certain amount of formation water;In the production process of natural gas, in order to prevent the formation of natural gas hydrate and corrosion equipment, some chemical agents, such as methanol, ethylene glycol and other inhibitors, are injected into wellbore or ground facilities;These chemical agents will mix with formation water or other fluids generated in the production process, and waste water is generated with the exploitation of natural gas, and the generated waste water can be recycled by recycling device.

[0003] The existing natural gas wastewater recycling device still has some deficiencies, for example, in the presence of oil and gas coexisting reservoir, in the process of natural gas exploitation, the produced wastewater will contain a small amount of crude oil or condensate oil, if not properly handled, it will cause serious pollution to the environment, therefore we need to propose a natural gas exploitation wastewater recycling device. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of natural gas exploitation wastewater recycling device, with the advantage of preventing oil-containing wastewater from causing serious pollution to the environment, to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of natural gas exploitation wastewater recycling device, including water inlet channel, one end of the water inlet channel is communicated with the filter assembly for filtering solid particles in waste water, one end of the filter assembly is communicated with transport pipeline, the surface of the transport pipeline is communicated with water pump, the end of the transport pipeline away from filter assembly is communicated with the separation assembly for separating oil and water.

[0006] Preferably, the filter assembly includes a filter tank and a T-shaped filter, the surface of the filter tank is communicated with one end of the water inlet channel, a first motor is installed on the top of the filter tank, a rotating shaft is installed on the output end of the first motor, a U-shaped stirring rod is installed on the surface of the rotating shaft, a rotating block is installed on the end of the rotating shaft away from the first motor, and a brush is installed on the bottom of the rotating block.

[0007] Preferably, the bottom of the filter tank is communicated with the water inlet of the T-shaped filter, and the water outlet of the T-shaped filter is communicated with one end of the transport pipeline.

[0008] Preferably, a filter plate is installed on the end of the filter tank inner wall close to the brush, filter holes are formed on the surface of the filter plate, and a blowdown pump is communicated with the side of the filter tank inner wall close to the filter plate.

[0009] Preferably, the separation assembly comprises a separation tank and an oil storage tank, the surface of the separation tank is connected with the surface of the oil storage tank, the inner wall of the separation tank is provided with a fixing ring, the surface of the fixing ring is provided with a connecting frame, and the end of the connecting frame away from the fixing ring is provided with a limiting ring.

[0010] Preferably, the bottom of the separation tank is provided with a second motor, the output end of the second motor is provided with a rotating disc, the surface of the rotating disc is provided with a centrifugal tank, the surface of the centrifugal tank is connected with the surface of the limiting ring, the surface of the centrifugal tank is provided with a water outlet hole, the top of the centrifugal tank is communicated with the surface of the oil storage tank, the upper surface of the oil storage tank is communicated with the surface of the transportation pipeline, one side of the surface of the oil storage tank is communicated with an oil discharge pipeline, and the surface of the oil discharge pipeline is communicated with a fourth control valve.

[0011] Preferably, the bottom of the surface of the separation tank is communicated with a drainage pipeline, the surface of the drainage pipeline is communicated with a fifth control valve, and one end of the drainage pipeline is communicated with a circulating water tank.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The centrifugal tank, the oil storage tank and other structures in the separation assembly are used, the rotating disc is driven to rotate by the second motor, the centrifugal force is generated in the centrifugal tank, and the effective separation effect of oil and water is realized.

[0014] 2. The separation tank, the oil storage tank and other structures are used, the separated oil stains and water can be collected and discharged or utilized through the oil discharge pipeline and the drainage pipeline, and the situation that the oily wastewater causes serious pollution to the environment is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a structural sectional view of the filter assembly of the utility model;

[0017] Figure 3 It is an enlarged view of A of the filter assembly of the utility model;

[0018] Figure 4 It is a structural sectional view of the separation assembly of the utility model;

[0019] Figure 5 It is a structural sectional view of the centrifugal tank of the utility model.

[0020] In the figure: 1, water inlet channel; 2, transport pipeline; 3, water pump; 4, filter tank; 5, T-shaped filter; 6, first motor; 7, rotating shaft; 8, U-shaped stirring rod; 9, rotating block; 10, brush; 11, filter plate; 12, separation tank; 13, oil storage hopper; 14, fixed ring; 15, connecting frame; 16, limiting ring; 17, second motor; 18, rotating disc; 19, centrifugal tank; 20, water outlet hole; 21, oil discharge pipeline; 22, fourth control valve; 23, water discharge pipeline; 24, fifth control valve; 25, circulating water tank; 26, filter hole; 27, sewage pump. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of natural gas exploitation wastewater recycling device, including water inlet channel 1, the one end of water inlet channel 1 is connected with the filter assembly for filtering solid particles in wastewater, the one end of filter assembly is connected with transport pipeline 2, the surface of transport pipeline 2 is connected with water pump 3, the one end of transport pipeline 2 away from filter assembly is connected with the separation assembly for separating oil and water.Wastewater generated by exploiting natural gas is introduced into recycling device through water inlet channel 1, realizes the continuous transport of wastewater from exploitation site to processing device, improves the efficiency of wastewater treatment;Through transport pipeline 2, wastewater treated initially can be transported to separation assembly, so as to be further separated from oil;Through water pump 3, power is provided for wastewater, to ensure that wastewater can be smoothly transported from filter assembly to separation assembly.

[0023] Filter assembly includes filter tank 4 and T-shaped filter 5, the surface of filter tank 4 is connected with the one end of water inlet channel 1, the top of filter tank 4 is equipped with first motor 6, the output end of first motor 6 is equipped with rotating shaft 7, the surface of rotating shaft 7 is equipped with U-shaped stirring rod 8, the one end of rotating shaft 7 away from first motor 6 is equipped with rotating block 9, the bottom of rotating block 9 is equipped with brush 10, the surface of brush 10 is connected with the surface of filter plate 11;The bottom of filter tank 4 is connected with the water inlet of T-shaped filter 5, the water outlet of T-shaped filter 5 is connected with the one end of transport pipeline 2;The one end of filter plate 11 close to brush 10 is installed on the inner wall of filter tank 4, the surface of filter plate 11 is provided with filter hole 26, the side of filter tank 4 close to filter plate 11 is connected with sewage pump 27.

[0024] The first motor 6 drives the rotating shaft 7 to rotate, thereby driving the U-shaped stirring rod 8 to rotate, and at the same time, the rotating shaft 7 drives the rotating block 9 and the brush 10 to rotate, through the continuous stirring action and the continuous cleaning of the filter plate 11 by the brush 10, the filter plate 11 can be effectively prevented from being blocked by larger solid particles, thereby prolonging the service life of the filter assembly; through the cooperation of the filter plate 11 and the filter hole 26, the effect of separating the wastewater and larger particles can be achieved; when the wastewater after preliminary treatment passes through the T-shaped filter 5, the impurities are blocked, and the clean filtrate is discharged from the filter outlet; when cleaning is needed, only the detachable filter cartridge is taken out, treated and reloaded, so that the use and maintenance are very convenient; through the periodic start of the blowdown pump 27, the sewage accumulated at the top of the filter tank 4 can be discharged.

[0025] The separation assembly comprises a separation tank 12 and an oil storage hopper 13, the surface of the separation tank 12 is rotationally connected with the surface of the oil storage hopper 13, the inner wall of the separation tank 12 is provided with a fixing ring 14, the surface of the fixing ring 14 is provided with a connecting frame 15, and the end of the connecting frame 15 away from the fixing ring 14 is provided with a limiting ring 16; the bottom of the separation tank 12 is provided with a second motor 17, the output end of the second motor 17 is provided with a rotating disc 18, and the surface of the rotating disc 18 is provided with a centrifugal tank 19, and the surface of the centrifugal tank 19 is rotationally connected with the surface of the limiting ring 16. Through the cooperation of the separation tank 12, the fixing ring 14, the connecting frame 15 and the limiting ring 16, the position of the centrifugal tank 19 can be limited; the second motor 17 drives the rotating disc 18 to rotate, thereby driving the centrifugal tank 19 to rotate.

[0026] The surface of the centrifugal tank 19 is provided with a water outlet hole 20, the top of the centrifugal tank 19 is in communication with the surface of the oil storage hopper 13, the upper surface of the oil storage hopper 13 is in communication with the surface of the transportation pipeline 2, one end of the transportation pipeline 2 penetrates the oil storage hopper 13 and extends to the inside of the centrifugal tank 19, one side of the surface of the oil storage hopper 13 is communicated with an oil discharge pipeline 21, and the surface of the oil discharge pipeline 21 is communicated with a fourth control valve 22. The filtered wastewater flows into the inside of the centrifugal tank 19 through the transportation pipeline 2, the water outlet hole 20 on the surface of the centrifugal tank 19 is coated and installed with a material with hydrophilic and oleophobic properties (super-hydrophilic / underwater super-oleophobic nanofiber membrane), and in the case that the centrifugal tank 19 rotates, water and oil are separated due to the different densities of water and oil, at the same time, water flows into the inside of the separation tank 12 through the water outlet hole 20, and oil is isolated in the inside of the centrifugal tank 19 by the material with hydrophilic and oleophobic properties, in the process of water and oil separation, oil gradually flows upward through the oil storage hopper 13 and is discharged or collected by the oil discharge pipeline 21, and the fourth control valve 22 plays a role in controlling the oil discharge flow, thereby preventing the serious pollution of the environment caused by the oily wastewater.

[0027] The bottom of the surface side of the separation tank 12 is communicated with a drain pipeline 23, the surface of the drain pipeline 23 is communicated with a fifth control valve 24, one end of the drain pipeline 23 is communicated with a circulating water tank 25; the separated water can flow into the inside of the circulating water tank 25 through the cooperation of the drain pipeline 23 and the fifth control valve 24, the circulating water tank 25 receives the wastewater treated by the filtering assembly and the separation assembly, removes the solid particles, oil stains and other impurities, reaches the recycling standard, the circulating water tank 25 stores the treated wastewater for subsequent production process to use again, thereby realizing the efficient utilization of water resources and reducing the pollution to the environment.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A natural gas exploitation wastewater recycling device, comprising an inlet channel (1), characterized in that: One end of the water inlet channel (1) is communicated with a filtering assembly for filtering solid particles in wastewater, one end of the filtering assembly is communicated with a conveying pipeline (2), the surface of the conveying pipeline (2) is communicated with a water pump (3), and the end, away from the filtering assembly, of the conveying pipeline (2) is communicated with a separation assembly for separating oil and water.

2. The natural gas exploitation wastewater recycling device according to claim 1, characterized in that: The filtering assembly comprises a filtering tank (4) and a T-shaped filter (5), the surface of the filtering tank (4) is communicated with one end of the water inlet channel (1), the top of the filtering tank (4) is provided with a first motor (6), the output end of the first motor (6) is provided with a rotating shaft (7), the surface of the rotating shaft (7) is provided with a U-shaped stirring rod (8), the end, away from the first motor (6), of the rotating shaft (7) is provided with a rotating block (9), and the bottom of the rotating block (9) is provided with a brush (10).

3. The natural gas exploitation wastewater recycling device according to claim 2, characterized in that: The bottom of the filtering tank (4) is communicated with the water inlet of the T-shaped filter (5), and the water outlet of the T-shaped filter (5) is communicated with one end of the conveying pipeline (2).

4. The natural gas exploitation wastewater recycling device according to claim 3, characterized in that: The end, close to the brush (10), of the inner wall of the filtering tank (4) is provided with a filter plate (11), the surface of the filter plate (11) is provided with filter holes (26), and the side, close to the filter plate (11), of the inner wall of the filtering tank (4) is communicated with a blowdown pump (27).

5. The natural gas exploitation wastewater recycling device according to claim 4, characterized in that: The separation assembly comprises a separation tank (12) and an oil storage hopper (13), the surface of the separation tank (12) is connected with the surface of the oil storage hopper (13), the inner wall of the separation tank (12) is provided with a fixing ring (14), the surface of the fixing ring (14) is provided with a connecting frame (15), and the end, away from the fixing ring (14), of the connecting frame (15) is provided with a limiting ring (16).

6. The natural gas exploitation wastewater recycling device according to claim 5, characterized in that: The bottom of the separation tank (12) is provided with a second motor (17), the output end of the second motor (17) is provided with a rotating disc (18), the surface of the rotating disc (18) is provided with a centrifugal tank (19), the surface of the centrifugal tank (19) is connected with the surface of the limiting ring (16), the surface of the centrifugal tank (19) is provided with a water outlet hole (20), the top of the centrifugal tank (19) is communicated with the surface of the oil storage hopper (13), the upper surface of the oil storage hopper (13) is communicated with the surface of the conveying pipeline (2), one side of the surface of the oil storage hopper (13) is communicated with an oil discharge pipeline (21), and the surface of the oil discharge pipeline (21) is communicated with a fourth control valve (22).

7. The natural gas exploitation wastewater recycling device according to claim 6, characterized in that: The bottom of one side of the surface of the separation tank (12) is communicated with a water discharge pipeline (23), the surface of the water discharge pipeline (23) is communicated with a fifth control valve (24), and one end of the water discharge pipeline (23) is communicated with a circulating water tank (25).

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