Harmless treatment device for oil and gas field operation waste liquid

Abstract

The utility model relates to a harmless treatment device for oil and gas field operation waste liquid, which comprises a filter box and a dosing purification tank, and is technically characterized in that a right-angle output pipeline is arranged at an outlet in the filter box, the lower end of the right-angle output pipeline is communicated with an inlet of a horizontal spiral conveyor, and an outlet of the horizontal spiral conveyor is positioned above the front part of the dosing purification tank; a vertical dosing pipe is arranged on the horizontal section of the right-angle output pipeline, the upper end of the vertical dosing pipe is connected with the lower end of a feeding hopper, the feeding hopper is fixedly connected with the filter box through a support, the vertical dosing pipe is provided with a flow control valve and a one-way valve, an aeration structure is arranged on the bottom face of the dosing purification pond, and a scum outlet is formed in the upper portion of the rear side wall of the dosing purification pond. A scum collecting box is arranged at the rear part of the dosing purification tank, a longitudinal telescopic cylinder is arranged in the scum collecting box, an adjustable lifting door corresponding to the scum outlet is arranged at the top of the longitudinal telescopic cylinder, and a scum purging mechanism is additionally arranged above the dosing purification tank. Compared with the prior art, the device obviously enhances the purification effect.

Description

Technical Field

[0001] The utility model relates to the technical field of environmentally friendly treatment of waste liquid from oil and gas field operations, in particular to a harmless treatment device for waste liquid from oil and gas field operations. Background Art

[0002] Oil and gas field operations generally include drilling, fracturing, downhole operations, and well cleaning. The wastewater generated during these operations is collectively referred to as operational wastewater. Untreated operational wastewater can harm ecosystems and human health. Therefore, harmless and environmentally friendly treatment of oil and gas field operational wastewater is essential.

[0003] For example, CN 221777622 U discloses a harmless treatment device for waste liquid from oil and gas field operations, comprising a waste liquid pool; a filter assembly disposed on the upper surface of the waste liquid pool for filtering; a cleaning unit disposed within the filter assembly; and a purification unit disposed within the waste liquid pool. The cleaning unit comprises a drive assembly disposed on the outer surface of the filter assembly and a cleaning assembly disposed on the outer surface of the drive assembly. The purification unit comprises a movable assembly disposed on the inner wall of the waste liquid pool and a purification assembly disposed on the outer surface of the movable assembly. This device is intended to facilitate the purification of harmful substances from waste liquids by utilizing a second drive motor, a second screw, a movable bracket, a pneumatic cylinder, a second telescopic rod, a baffle, a connecting pipe, and an atomizing nozzle. However, there are problems: the atomizing nozzle sprays the neutralizing agent into the middle and upper layers of the wastewater in a single direction, preventing effective mixing with the wastewater. Consequently, the wastewater purification is incomplete, resulting in poor treatment results. Utility Model Content

[0004] The purpose of the utility model is to provide a harmless treatment device for waste liquid from oil and gas field operations which has a reasonable structure and is reliable in use and solves the above-mentioned problems, thereby significantly enhancing the purification effect.

[0005] The technical solution of the utility model is:

[0006] A harmless treatment device for waste liquid from oil and gas field operations comprises a filter box and a dosing purification tank. The technical key points are: a right-angle output pipeline is provided at the outlet of the filter box, the lower end of the right-angle output pipeline is connected to the inlet of a horizontal screw conveyor, the outlet of the horizontal screw conveyor is located above the front of the dosing purification tank, a dosing riser is provided on the horizontal section of the right-angle output pipeline, and the upper end of the dosing riser is connected to the lower end of the dosing hopper, the dosing hopper is fixed to the filter box by a bracket, the dosing riser is provided with a flow control valve and a one-way valve in sequence from top to bottom, an aeration structure is provided on the bottom surface of the dosing purification tank, a scum outlet is provided on the upper part of the rear side wall of the dosing purification tank, a scum collecting box is provided at the rear of the dosing purification tank, a longitudinal telescopic cylinder is provided in the scum collecting box, and an adjustable lifting door corresponding to the scum outlet is provided on the top of the longitudinal telescopic cylinder, and a scum blowing mechanism is also provided above the dosing purification tank.

[0007] In the above-mentioned harmless treatment device for waste liquid from oil and gas field operations, a vibration motor is provided on the bracket and is attached to the feeding hopper to ensure smooth material discharge.

[0008] In the above-mentioned harmless treatment device for waste liquid from oil and gas field operations, the aeration structure is an aeration plate arranged on the bottom surface of the dosing purification tank, and a uniform aeration hole group is provided on the upper surface of the aeration plate.

[0009] The above-mentioned oil and gas field operation waste liquid harmless treatment device, the slag purge mechanism includes two horizontal linear modules arranged at the top of the left and right side walls of the dosing purification tank and extending from front to back, and a support beam perpendicular to it is connected between the sliders of the two horizontal linear modules. A plurality of purge pipes are provided on the support beam, and the upper ends of the various purge pipes are connected into one by a connecting pipe. The starting end of the connecting pipe is provided with a compressed gas inlet, and the lower end of the purge pipe is provided with an inclined trumpet-shaped purge port.

[0010] In the above-mentioned harmless treatment device for waste liquid from oil and gas field operations, the adjustable lifting door is a right-angle plate, the horizontal section of the right-angle plate is connected and fixed to the upper end of the cylinder rod of the longitudinal telescopic cylinder, the vertical section of the right-angle plate is tightly connected to the slag outlet, the horizontal section of the right-angle plate is provided with a guide plate, and a waste outlet is provided on the side of the bottom of the slag collection box.

[0011] The above-mentioned oil and gas field operation waste liquid harmless treatment device has an inclined filter screen provided in the filter box, which divides the filter box into an inlet side chamber and a water filtration side chamber. The outlet in the filter box is located at the top of the water filtration side chamber, and the low end of the water inlet side chamber is provided with a sewage outlet, and the high end of the water inlet side chamber is provided with a water inlet.

[0012] The beneficial effects of the utility model are:

[0013] 1. During operation, the solid impurities in the waste liquid are first removed by the filter box, and then the waste water is sent to the horizontal screw conveyor through the right-angle output pipeline, and then reaches the dosing purification tank through the horizontal screw conveyor. During this process, the chemical is evenly added to the water flowing through the right-angle output pipeline through the feeding hopper to achieve the purpose of uniform drug distribution. At the same time, the water body added with the chemical is turned over in the horizontal screw conveyor to achieve the purpose of strengthening mixing and stirring, thereby enhancing the purification effect of the water body.

[0014] 2. An aeration structure is provided on the bottom of the dosing purification tank to improve the efficiency of scum floating. At the same time, the scum is blown to the scum outlet by the scum blowing mechanism. The actual liquid outlet height of the scum outlet can be adjusted according to the adjustable lifting door, which is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 yes Figure 1 Top view of .

[0017] In the figure: 1. Water inlet, 2. Filter box, 3. Inclined filter screen, 4. Sewage outlet, 5. Vibration motor, 6. Bracket, 7. Hopper, 8. Flow control valve, 9. Check valve, 10. Right-angle output pipeline, 11. Horizontal screw conveyor, 12. Horizontal linear module, 13. Compressed gas inlet, 14. Connecting pipe, 15. Support beam, 16. Purge pipe, 17. Aeration plate, 18. Dosing purification tank, 19. Scum outlet, 20. Adjustable lift door, 21. Guide plate, 22. Longitudinal telescopic cylinder, 23. Waste outlet, 24. Scum collection box. DETAILED DESCRIPTION

[0018] The utility model is described in detail according to the accompanying drawings.

[0019] like Figure 1 、 Figure 2 As shown, the harmless treatment device for waste liquid from oil and gas field operations includes a filter box 2 and a dosing purification tank 18.

[0020] Among them, the outlet of the filter box 2 is provided with a right-angle output pipe 10, the lower end of which is connected to the inlet of a horizontal screw conveyor 11, the outlet of which is located above the front of the dosing purification tank 18, and a dosing riser is provided on the horizontal section of the right-angle output pipe 10, and the upper end of the dosing riser is connected to the lower end of the feeding hopper 7, the feeding hopper 7 is connected and fixed to the filter box 2 by a bracket 6, and the dosing riser is provided with a flow control valve 8 and a one-way valve 9 from top to bottom. In this embodiment, a vibration motor 5 is provided on the bracket 6, which is attached to the feeding hopper 7 to ensure smooth material discharge. The filter box 2 is provided with an inclined filter screen 3, which divides the filter box 2 into an inlet side chamber and a filter side chamber. The outlet of the filter box 2 is located at the top of the filter side chamber, the lower end of the inlet side chamber is provided with a sewage outlet 4, and the upper end of the inlet side chamber is provided with a water inlet 1.

[0021] The bottom surface of the dosing purification tank 18 is equipped with an aeration structure. A scum outlet 19 is located on the upper portion of the rear sidewall of the dosing purification tank 18. A scum collection box 24 is located at the rear of the dosing purification tank 18. A longitudinally telescopic cylinder 22 is installed within the scum collection box 24. An adjustable lift door 20 is located on the top of the longitudinally telescopic cylinder 22, corresponding to the scum outlet 19. A scum purge mechanism is also located above the dosing purification tank 18. In this embodiment, the aeration structure is an aeration plate 17 located on the bottom surface of the dosing purification tank 18. The upper surface of the aeration plate 17 is provided with a uniform group of aeration holes. The scum purge mechanism includes two horizontal linear modules 12 located at the top of the left and right side walls of the dosing purification tank 18 and extending from front to back. A support beam 15, perpendicular to the sliders of the two horizontal linear modules 12, is connected. Multiple purge tubes 16 are mounted on this support beam 15. The upper ends of the purge tubes 16 are connected together by a connecting pipe 14. The starting end of the connecting pipe 14 is equipped with a compressed gas inlet 13, and the lower ends of the purge tubes 16 are equipped with inclined trumpet-shaped purge ports. The adjustable lift door 20 is a right-angled plate. The horizontal section of the plate is fixedly connected to the upper end of the cylinder rod of the longitudinal telescopic cylinder 22, while the vertical section of the plate is tightly connected to the slag outlet 19. A guide plate 21 is installed on the horizontal section of the plate. A waste outlet 23 is located on the side of the bottom of the slag collection box 24.

[0022] Working principle:

[0023] Wastewater from oil and gas field operations enters the filter box 2 through the water inlet 1 and undergoes primary filtration through the inclined filter screen 3. After solid impurities are removed, the water flows to the horizontal screw conveyor 11 through the right-angle output pipeline 10. During this process, the purifying agent is added to the water using the feeding hopper 7 and the dosing riser. During this process, the flow rate of the agent is controlled by the flow control valve 8, and the vibration motor 5 facilitates smooth material discharge.

[0024] The water discharged by the horizontal screw conveyor 11 falls into the chemical dosing purification tank 18, where it reacts. The generated scum is accelerated to float upward under the action of the aeration structure. After a period of reaction, the longitudinal telescopic cylinder 22 is used to move the adjustable lifting door 20 downward and open the scum outlet 19. The two horizontal linear modules 12 are activated, driving the support beam 15 and the various purge pipes 16 thereon to move from front to back. During this process, compressed gas is introduced through the compressed gas inlet 13 and sprayed toward the scum through the various purge pipes 16 and the inclined trumpet-shaped purge port. The compressed gas is blown to the scum outlet 19 and discharged from the scum outlet 19 to the scum collection box 24. After reaching the set height, the waste outlet 23 is opened for discharge.

[0025] The above detailed description of the embodiments of the present invention is intended to be a preferred embodiment of the present invention and should not be construed as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of this patent.

Claims

1. A harmless treatment device for waste liquid from oil and gas field operations, comprising a filter box and a dosing purification tank, characterized in that: A right-angle output pipeline is provided at the outlet of the filter box, the lower end of the right-angle output pipeline is connected to the inlet of the horizontal screw conveyor, the outlet of the horizontal screw conveyor is located above the front of the dosing purification tank, a dosing riser is provided on the horizontal section of the right-angle output pipeline, and the upper end of the dosing riser is connected to the lower end of the dosing hopper, the dosing hopper is fixed to the filter box by a bracket, the dosing riser is provided with a flow control valve and a one-way valve from top to bottom, an aeration structure is provided on the bottom surface of the dosing purification tank, a scum outlet is provided on the upper part of the rear side wall of the dosing purification tank, a scum collection box is provided at the rear of the dosing purification tank, a longitudinal telescopic cylinder is provided in the scum collection box, the top of the longitudinal telescopic cylinder is provided with an adjustable lifting door corresponding to the scum outlet, and a scum blowing mechanism is further provided above the dosing purification tank.

2. The harmless treatment device for waste liquid from oil and gas field operations according to claim 1 is characterized by: The bracket is provided with a vibration motor which is attached to the feeding hopper.

3. The harmless treatment device for oil and gas field waste liquid according to claim 1 is characterized in that: The aeration structure is an aeration plate arranged on the bottom surface of the dosing purification tank, and a uniform aeration hole group is arranged on the upper surface of the aeration plate.

4. The harmless treatment device for waste liquid from oil and gas field operations according to claim 1 is characterized in that: The slag blowing mechanism includes two horizontal linear modules arranged at the top of the left and right side walls of the dosing purification tank and extending from front to back. A support beam perpendicular to the sliders of the two horizontal linear modules is connected therebetween. A plurality of blowing pipes are provided on the support beam. The upper ends of the blowing pipes are connected as a whole by a connecting pipe. The starting end of the connecting pipe is provided with a compressed gas inlet, and the lower end of the blowing pipe is provided with an inclined trumpet-shaped blowing port.

5. The harmless treatment device for waste liquid from oil and gas field operations according to claim 1 is characterized in that: The adjustable lifting door is a right-angle plate, the horizontal section of the right-angle plate is connected and fixed to the upper end of the cylinder rod of the longitudinal telescopic cylinder, the vertical section of the right-angle plate is tightly connected to the slag outlet, the horizontal section of the right-angle plate is provided with a guide plate, and a waste outlet is provided on the side of the bottom of the slag collection box.

6. The harmless treatment device for waste liquid from oil and gas field operations according to claim 1 is characterized by: An inclined filter screen is provided in the filter box, which divides the filter box into an inlet side chamber and a filtration side chamber. The outlet in the filter box is located at the top of the filtration side chamber. A sewage outlet is provided at the low end of the inlet side chamber, and a water inlet is provided at the high end of the inlet side chamber.

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