VOCS recovery surge tank

Abstract

The utility model relates to the technical field of surge tanks, in particular to a VOCS (volatile organic compounds) recovery surge tank which comprises a separation tank, an air inlet is arranged at one end of the separation tank, an air outlet is arranged at the other end of the separation tank, a guide pipe is arranged at the air inlet towards the air outlet and penetrates through the separation tank, and a filter structure is arranged on the inner wall of the separation tank relative to the air outlet. The filtering structure covers the air outlet, and the air inlet, the guide pipe, the filtering structure and the air outlet are coaxially arranged; a waste liquid tank is connected below the separation tank, the diameter of the waste liquid tank is smaller than that of the separation tank, a flow guide pipe is arranged between the separation tank and the waste liquid tank, and the flow guide pipe is communicated with the bottom edge of the separation tank and located between the guide pipe and the filtering structure. The utility model aims to quickly and stably separate the liquid part in the volatile gas to be treated.

Description

Technical Field

[0001] This utility model relates to the field of pressure stabilizing tank technology, and in particular to a VOCs recovery pressure stabilizing tank. Background Technology

[0002] Oilfield tanks continuously emit gases. The volatile gases from several or even a dozen storage tanks in each processing plant need to be collected and fed into a pressure stabilizing tank for pressure stabilization and drainage before entering the compressor system for pressurization and recovery. The design quality of the pressure stabilizing tank directly affects the stable operation of the downstream compressor. The volatile gases to be processed contain large amounts of hydrocarbons and moisture; how to quickly and stably separate and discharge these impurities is a crucial standard for improving the stability of the pressure stabilizing tank. Utility Model Content

[0003] The main purpose of this invention is to provide a VOCs recovery and pressure stabilizing tank, which aims to quickly and stably separate the liquid portion from the volatile gas to be treated.

[0004] To achieve the above objectives, this utility model proposes a VOCs recovery and pressure stabilizing tank, including a separation tank. One end of the separation tank is provided with an air inlet, and the other end is provided with an air outlet. A guide tube is provided between the air inlet and the air outlet, and the guide tube passes through the separation tank. A filter structure is provided on the inner wall of the separation tank opposite to the air outlet, and the filter structure covers the air outlet. The air inlet, guide tube, filter structure, and air outlet are coaxially arranged.

[0005] A waste liquid tank is connected to the bottom of the separation tank. The diameter of the waste liquid tank is smaller than that of the separation tank. A guide pipe is provided between the separation tank and the waste liquid tank. The guide pipe is connected to the bottom edge of the separation tank and is located between the guide pipe and the filter structure.

[0006] In one embodiment of this application, a plurality of support frames are evenly provided on the bottom edge of the separation tank along the direction away from the separation tank, and the plurality of support frames and the separation tank enclose an installation space, and the waste liquid tank passes through the installation space;

[0007] The waste liquid tank is provided with multiple stabilizing frames evenly distributed along the extension direction of the support frame.

[0008] In one embodiment of this application, the waste liquid tank is provided with a connecting frame facing the separation tank, and there are multiple connecting frames. The multiple connecting frames are evenly arrayed on the waste liquid tank and connected to the separation tank; the multiple connecting frames are wrapped around the guide pipe.

[0009] In one embodiment of this application, a filter element is inserted inside the guide tube, one end of the guide tube is connected to the air inlet, and the other end is located on one side of the guide tube.

[0010] In one embodiment of this application, a drain structure is connected to the side of the waste liquid tank away from the separation tank, and the drain structure is connected to the side of the waste liquid tank away from the guide pipe;

[0011] The sewage discharge structure includes at least two sewage discharge outlets. Each sewage discharge outlet has an inlet relative to the waste liquid tank. The inlet of one sewage discharge outlet is connected to the bottom edge of the waste liquid tank, and the inlet of the other sewage discharge outlet passes through the waste liquid tank and gradually extends toward the separation tank.

[0012] By adopting the above technical solution, this utility model has the following advantages:

[0013] 1. The separator is equipped with an air inlet, guide pipe, filter structure, and air outlet, and these structures are arranged along a central axis, allowing gas from multiple large tanks in the oilfield to be collected uniformly and accurately guided to the filter structure so that the liquid portion of the gas can be screened out. The filter structure is generally a wire mesh defoaming mechanism, which, together with the guide pipe, makes the introduced volatile gas purer and facilitates gas recovery and reuse. The filter structure is connected to the cross-section of the separator, so that the gas must pass through the filter structure to be discharged. The filter structure is connected to the bottom of the tank body, which can guide the liquid portion to the bottom of the separator for subsequent recovery and waste discharge.

[0014] 2. A waste liquid tank is located below the separator tank for collecting waste liquid. The volume of the waste liquid tank is smaller than that of the separator tank, and the diameter of the waste liquid tank is smaller than that of the separator tank, so that the waste liquid tank can be completely housed below the separator tank. This ensures the stability of the guide pipe and allows the liquid separated in the separator tank to be stably and quickly introduced into the waste liquid tank for subsequent waste liquid treatment. Both the separator tank and the waste liquid tank are equipped with vent valves and flow valves on their outer periphery. These can be used to unfold the tank body for easy cleaning by the user, and can also provide venting protection for the tank body when the internal pressure is too high, ensuring the safety of equipment use.

[0015] 3. The guide tube is located between the guide tube and the filter structure. The end of the guide tube away from the air inlet is connected to one side of the guide tube, and the filter structure is located on the other side of the guide tube. With this structure, the liquid components separated from the gas in the guide tube and the filter structure can enter the waste liquid tank through the guide tube as soon as possible, so that the pressure stabilizing tank can achieve rapid and stable separation of the liquid part in the volatile gas to be treated, improving the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the VOCs recovery and pressure stabilizing tank of this utility model.

[0018] Explanation of icon numbers:

[0019] 1. Separator; 11. Air inlet; 12. Guide pipe; 13. Air outlet; 14. Filter structure; 15. Flow guide pipe; 16. Support frame; 2. Waste liquid tank; 21. Connecting frame; 3. Sewage discharge structure.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] Reference Figure 1 To achieve the above objectives, this utility model proposes a VOCs recovery and pressure stabilizing tank, including a separation tank 1. One end of the separation tank 1 is provided with an air inlet 11 and the other end is provided with an air outlet 13. A guide tube 12 is provided between the air inlet 11 and the air outlet 13. The guide tube 12 passes through the separation tank 1. A filter structure 14 is provided on the inner wall of the separation tank 1 relative to the air outlet 13. The filter structure 14 covers the air outlet 13. The air inlet 11, the guide tube 12, the filter structure 14, and the air outlet 13 are coaxially arranged.

[0023] Below the separator tank 1 is a waste liquid tank 2. The diameter of the waste liquid tank 2 is smaller than the diameter of the separator tank 1. A guide pipe 15 is provided between the separator tank 1 and the waste liquid tank 2. The guide pipe 15 is connected to the bottom edge of the separator tank 1 and is located between the guide pipe 12 and the filter structure 14.

[0024] The separator 1 is equipped with an air inlet 11, a guide pipe 12, a filter structure 14, and an air outlet 13. These structures are arranged along a central axis, allowing the gas from multiple large tanks in the oil field to be collected uniformly and accurately guided to the filter structure 14 so that the liquid portion in the gas can be screened out. The filter structure 14 is generally a wire mesh defoaming mechanism, which, together with the guide pipe 12, makes the introduced volatile gas purer and facilitates gas recovery and reuse. The filter structure 14 is connected to the cross-section of the separator 1, so that the gas must pass through the filter structure 14 before it can be discharged. The filter structure 14 is connected to the bottom of the tank body, which can guide the liquid portion to the bottom of the separator 1, facilitating subsequent recovery and waste discharge.

[0025] Below the separator tank 1 is a waste liquid tank 2 for collecting waste liquid. The volume of the waste liquid tank 2 is smaller than that of the separator tank 1, and the diameter of the waste liquid tank 2 is smaller than that of the separator tank 1, so that the waste liquid tank 2 can be completely housed below the separator tank 1. This ensures the stability of the guide pipe 15, allowing the liquid separated from the separator tank 1 to be stably and quickly introduced into the waste liquid tank 2 for subsequent waste liquid treatment. Both the separator tank 1 and the waste liquid tank 2 are equipped with vent valves, guide valves, and other structures on their outer periphery, which can be used to unfold the tank body for easy cleaning by the user. At the same time, they can also provide venting protection for the tank body when the internal pressure is too high, ensuring the safety of equipment use.

[0026] The guide pipe 15 is located between the guide pipe 12 and the filter structure 14. The end of the guide pipe 12 away from the air inlet 11 is connected to one side of the guide pipe 15, and the filter structure 14 is located on the other side of the guide pipe 15. Under this structure, the liquid components separated from the gas in the guide pipe 12 and the filter structure 14 can enter the waste liquid tank 2 through the guide pipe 15 as soon as possible, so that the pressure stabilizing tank can achieve rapid and stable separation of the liquid part in the volatile gas to be treated, thereby improving the user experience.

[0027] See also Figure 1 The bottom edge of the separator 1 is provided with multiple support frames 16 evenly along the direction away from the separator 1. The multiple support frames 16 and the separator 1 enclose an installation space, and the waste liquid tank 2 is installed in the installation space. The waste liquid tank 2 is provided with multiple stabilizing frames evenly along the extension direction of the support frames 16.

[0028] The support frame 16 not only forms a stable support structure, making the installation of the separation tank 1 more stable, but also forms an installation space to protect the waste liquid tank 2 and prevent the waste liquid tank 2 from being disturbed by the outside world. Similarly, the waste liquid tank 2 is also equipped with a stable frame with a structure similar to the support frame 16, so that the two tanks can remain relatively stationary and can effectively protect the guide pipe 15.

[0029] See also Figure 1 The waste liquid tank 2 is provided with a connecting frame 21 facing the separation tank 1. There are multiple connecting frames 21, which are evenly arrayed on the waste liquid tank 2 and connected to the separation tank 1. The multiple connecting frames 21 are wrapped around the guide pipe 15.

[0030] The connecting frame 21 is used for further processing the connection between the waste liquid tank 2 and the separation tank 1, and is used to protect the guide pipe 15 so that the waste liquid can be smoothly introduced into the waste liquid tank 2 and avoid damage to the guide pipe 15 itself.

[0031] See also Figure 1 A filter element is installed inside the guide tube 12. One end of the guide tube 12 is connected to the air inlet 11, and the other end is located on one side of the guide tube 15.

[0032] The guide tube 12 is equipped with a filter element, which can perform preliminary filtration of the introduced gas to separate a portion of the liquid components in the gas. This liquid component is then directly introduced into the waste liquid tank 2 through the guide tube 12, which can improve the gas treatment effect of the pressure stabilizing tank.

[0033] See also Figure 1 Waste liquid tank 2 is connected to a drain structure 3 on the side away from separation tank 1. The drain structure 3 is connected to the side of waste liquid tank 2 away from guide pipe 15.

[0034] The sewage discharge structure 3 includes at least two sewage discharge outlets. The sewage discharge outlets are provided with inlets relative to the waste liquid tank 2. The inlet of one sewage discharge outlet is connected to the bottom edge of the waste liquid tank 2, and the inlet of the other sewage discharge outlet passes through the waste liquid tank 2 and gradually extends toward the separation tank 1.

[0035] The sewage discharge structure 3 is located away from the guide pipe 15 in the waste liquid tank 2. This can prevent the liquid entering the waste liquid tank 2 through the guide pipe 15 from directly impacting the sewage discharge structure 3 and causing damage to the sewage discharge structure 3 itself. This is because the liquid contains light components, water, and viscous and dense hydrocarbon components. If all of these are discharged through a single sewage discharge port, the sewage discharge structure 3 is easily damaged. At least two sewage discharge ports are provided, and the inlet heights of the different sewage discharge ports are different. They can be used to discharge different components, improve sewage discharge efficiency, and protect the sewage discharge structure 3 itself.

[0036] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A VOCs recovery and pressure stabilizing tank, comprising a separation tank, characterized in that, The separator has an air inlet at one end and an air outlet at the other end. A guide tube is provided at the air inlet facing the air outlet. The guide tube passes through the separator. A filter structure is provided on the inner wall of the separator relative to the air outlet. The filter structure covers the air outlet. The air inlet, guide tube, filter structure, and air outlet are coaxially arranged. A waste liquid tank is connected to the bottom of the separation tank. The diameter of the waste liquid tank is smaller than that of the separation tank. A guide pipe is provided between the separation tank and the waste liquid tank. The guide pipe is connected to the bottom edge of the separation tank and is located between the guide pipe and the filter structure.

2. The VOCs recovery and stabilizing tank according to claim 1, characterized in that, The bottom edge of the separator is provided with multiple support frames evenly distributed along the direction away from the separator. The multiple support frames and the separator enclose an installation space, and the waste liquid tank is installed through the installation space. The waste liquid tank is provided with multiple stabilizing frames evenly distributed along the extension direction of the support frame.

3. A VOCs recovery and pressure stabilizing tank according to claim 2, characterized in that, The waste liquid tank is provided with a connecting frame facing the separation tank. Multiple connecting frames are provided and are evenly arrayed on the waste liquid tank and connected to the separation tank. Multiple connecting brackets are wrapped around the flow guide tube.

4. A VOCs recovery and pressure stabilizing tank according to claim 1, characterized in that, A filter element is inserted inside the guide tube. One end of the guide tube is connected to the air inlet, and the other end is located on one side of the guide tube.

5. A VOCs recovery and pressure stabilizing tank according to claim 1, characterized in that, The waste liquid tank is connected to a drain structure on the side away from the separation tank, and the drain structure is connected to the side of the waste liquid tank away from the guide pipe. The sewage discharge structure includes at least two sewage discharge outlets. Each sewage discharge outlet has an inlet relative to the waste liquid tank. The inlet of one sewage discharge outlet is connected to the bottom edge of the waste liquid tank, and the inlet of the other sewage discharge outlet passes through the waste liquid tank and gradually extends toward the separation tank.

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