Oil and gas well gas purification treatment device

Abstract

The utility model discloses a gas purification treatment device for an oil and gas well, which relates to the field of natural gas purification treatment technical devices and comprises a gas inlet pipe, a gas-liquid separator is arranged at the rear end of the gas inlet pipe, a first water pipe is arranged at the bottom of the gas-liquid separator, and a first gas pipe is arranged at the top of the gas-liquid separator. A three-phase separator is arranged between the first water pipe and the first gas pipe and located at the rear end of the gas-liquid separator, a second water pipe is arranged at the bottom of the rear end of the three-phase separator, an oil pipe is arranged in the middle of the rear end of the three-phase separator, and a two-stage mist catcher is arranged at the rear end of the first gas pipe. The two-stage mist catcher is located at the rear end of the three-phase separator, a gas purification processor is arranged at the rear end of the two-stage mist catcher, a gas inlet hole is formed in the front end of the gas purification processor, gas, oil and water in associated gas are separated, and then the gas is filtered to remove water in the gas.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas well gas purification processing equipment, in particular to an oil and gas well gas purification processing equipment. Background Art

[0002] There are many kinds of waste gas purification devices on the market, most of which use different purification methods according to the nature of the waste gas generated by the industry. For example: electronic dry smoke purifier, that is, welding fume purifier, is an industrial environmental protection equipment, usually used in welding places such as soldering and manual arc welding, to collect and purify the welding fume generated, to protect the environment and the health of workers. It is unable to purify sulfur-containing gas.

[0003] There are also electroplating waste gas purification towers or chemical plant waste gas purification devices. Although they can treat acid and alkali waste gases, most of them are large-scale fixed-installation equipment with poor flexibility, high cost and lack of specificity.

[0004] After exploring the Chinese patent: Oil and gas well return exhaust purification treatment device (publication number: CN214019989U) the oil and gas well return exhaust purification treatment device is connected to the inlet end of the dry separator through a pipeline, the outlet end of the dry separator is connected to the inlet end of the water washing tower, the outlet end of the water washing tower is connected to the inlet end of the alkali washing tower, the outlet end of the alkali washing tower is connected to the adsorption device through a pipeline, the adsorption device is provided with a fine desulfurization adsorption chamber and an activated carbon adsorption chamber, and the outlet end of the adsorption device is connected to the exhaust pipe through a fan. The beneficial effects are: the water washing tower and the alkali washing tower of the utility model are provided with spherical fillers; the adsorption device is provided with a fine desulfurization adsorption chamber and an activated carbon adsorption chamber, which can further desulfurize and adsorb, and can completely solve the effects of a series of measures such as volatilization and odor formation pollution, affecting fracturing, etc., and it has high flexibility, high efficiency, stable effect, simple operation and management, no secondary pollution, and low long-term operating costs.

[0005] The above patent has high efficiency, stable effect, simple operation and management, no secondary pollution, and low long-term operating costs. However, since the production pressure of oil field associated gas is usually low, it is difficult to transport without pressurization during use. In addition, the associated gas will liquefy and contain grease during transportation, and needs to be separated before purification. Therefore, it is necessary to invent an oil and gas well gas purification and processing device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a gas purification treatment device for oil and gas wells to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas purification treatment device for oil and gas wells, comprising an air inlet pipe, a gas-liquid separator is arranged at the rear end of the air inlet pipe, a first water pipe is arranged at the bottom of the gas-liquid separator, a first air pipe is arranged at the top of the gas-liquid separator, a three-phase separator is arranged between the first water pipe and the first air pipe, the three-phase separator is located at the rear end of the gas-liquid separator, a second water pipe is arranged at the bottom of the rear end of the three-phase separator, an oil pipe is arranged in the middle of the rear end of the three-phase separator, a two-stage mist collector is arranged at the rear end of the first air pipe, the two-stage mist collector is located at the rear end of the three-phase separator, a gas purification processor is arranged at the rear end of the two-stage mist collector, and an air inlet hole is opened at the front end of the gas purification processor.

[0008] Preferably, an exhaust hole is provided at the rear end of the gas purification processor.

[0009] Preferably, a filter is installed inside the gas purification processor.

[0010] Preferably, an activated carbon filter block is installed at the rear end of the filter screen, and the activated carbon filter block is located inside the gas purification processor.

[0011] Preferably, a two-stage corrugated plate coalescing separator is provided at the rear end of the gas purification processor.

[0012] Preferably, a second air pipe is provided at the rear end of the two-stage corrugated plate coalescing separator.

[0013] Preferably, the interiors of the air intake pipe, the first air pipe and the second air pipe are provided with an anti-corrosion coating.

[0014] Technical effects and advantages of the utility model:

[0015] 1. By setting up a gas purification processor, a second air pipe, a filter, an activated carbon filter block, a two-stage mist collector and a two-stage corrugated plate coalescing separator, the associated gas from the oil well is added to the air inlet pipe. Because the associated gas contains a high amount of water and hydrogen sulfide, the gas first passes through a gas-liquid separator to separate the internal liquid from the gas. The gas rises into the first air pipe, and the liquid descends into the first water pipe. Then, during the transportation of the associated gas, liquefaction and grease inside the associated gas may occur. At this time, the gas, oil and water are separated by a three-phase separator, and the water is discharged through the second water pipe. The advantage is that the gas, oil and water in the associated gas can be separated;

[0016] 2. By setting up an oil pipe, a gas purification processor, a second air pipe weigher, a second flow meter, a filter screen and an activated carbon filter block, the gas enters and passes through a two-stage mist collector to capture the mist particles and slurry in the gas, and then enters the gas purification processor, where the impurities are first filtered out by the filter screen, and then the harmful substances are filtered out by the activated carbon filter block, and then enters the two-stage corrugated plate agglomeration separator to aggregate the extremely small water droplets in the gas into larger water droplets, further separating the moisture, and the purified and filtered gas is discharged from the second air pipe. The advantage is that the gas can be filtered to remove the internal moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The utility model is a structural schematic diagram of a gas purification treatment device for oil and gas wells.

[0019] Figure 2 for Figure 1 A is an enlarged schematic diagram of the structure.

[0020] Figure 3 for Figure 1 Enlarged structural diagram at point B.

[0021] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of a gas purification processor of an oil and gas well gas purification processing device.

[0022] In the figure: 1. air inlet pipe; 2. gas-liquid separator; 3. first water pipe; 4. first air pipe; 5. three-phase separator; 6. second water pipe; 7. oil pipe; 8. gas purification processor; 9. second air pipe; 10. air inlet hole; 11. exhaust hole; 12. filter screen; 13. activated carbon filter block; 14. anti-corrosion coating; 15. two-stage mist collector; 16. two-stage corrugated plate agglomeration separator. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-4 A gas purification treatment device for oil and gas wells shown in the figure comprises an air inlet pipe 1, wherein the air inlet pipe 1 can allow gas to enter the interior, a gas-liquid separator 2 is arranged at the rear end of the air inlet pipe 1, wherein the gas-liquid separator 2 is arranged at the rear end of the air inlet pipe 1, so that the liquid in the interior can be separated from the gas, a first water pipe 3 is arranged at the bottom of the gas-liquid separator 2, wherein the first water pipe 3 is arranged at the bottom of the gas-liquid separator 2, so that liquid can pass through it, a first air pipe 4 is arranged at the top of the gas-liquid separator 2, wherein the first air pipe 4 is arranged at the top of the gas-liquid separator 2, so that gas can pass through it, a three-phase separator 5 is arranged between the first water pipe 3 and the first air pipe 4, wherein the three-phase separator 5 is arranged between the first water pipe 3 and the first air pipe 4, so that gas, oil and water can be separated, and the three-phase separator 5 is located at the rear end of the gas-liquid separator 2, and the rear of the three-phase separator 5 A second water pipe 6 is provided at the bottom of the end, wherein the second water pipe 6 is arranged at the bottom of the rear end of the three-phase separator 5, so that liquid can pass through it. An oil pipe 7 is provided in the middle of the rear end of the three-phase separator 5, wherein the oil pipe 7 is arranged in the middle of the rear end of the three-phase separator 5, so that oil can pass through it. A two-stage mist collector 15 is provided at the rear end of the first air pipe 4, wherein the two-stage mist collector 15 is arranged at the rear end of the first air pipe 4, so that mist particles and slurry in the gas can be captured. The two-stage mist collector 15 is located at the rear end of the three-phase separator 5. A gas purification processor 8 is provided at the rear end of the two-stage mist collector 15, wherein the gas purification processor 8 is arranged at the rear end of the first air pipe 4, so that gas can be purified and filtered. An air inlet 10 is provided at the front end of the gas purification processor 8, wherein the air inlet 10 is opened at the front end of the gas purification processor 8, so that gas can enter.

[0025] An exhaust hole 11 is provided at the rear end of the gas purification processor 8, wherein the exhaust hole 11 is provided at the rear end of the gas purification processor 8 so that the gas can be discharged therefrom.

[0026] A filter screen 12 is installed inside the gas purification processor 8, wherein the filter screen 12 is installed inside the gas purification processor 8 to filter impurities in the gas.

[0027] An activated carbon filter block 13 is installed at the rear end of the filter screen 12 , wherein the activated carbon filter block 13 is installed at the rear end of the filter screen 12 , so that harmful substances in the gas can be filtered out. The activated carbon filter block 13 is located inside the gas purification processor 8 .

[0028] A two-stage corrugated plate coalescing separator 16 is provided at the rear end of the gas purification processor 8, wherein the two-stage corrugated plate coalescing separator 16 is provided at the rear end of the gas purification processor 8 to coalesce extremely small water droplets in the gas into larger water droplets to further separate the moisture.

[0029] A second air pipe 9 is disposed at the rear end of the two-stage corrugated plate coalescing separator 16 , through which gas can pass.

[0030] An anti-corrosion coating 14 is arranged inside the intake pipe 1, the first air pipe 4 and the second air pipe 9. The anti-corrosion coating 14 is arranged inside the intake pipe 1, the first air pipe 4 and the second air pipe 9. Because the associated gas generally has strong corrosion resistance, the anti-corrosion coating 14 can increase the service life.

[0031] Working principle: Add the associated gas from the oil well into the air inlet pipe 1. Because the associated gas contains high levels of water and hydrogen sulfide, the gas first passes through the gas-liquid separator 2 to separate the internal liquid from the gas, and the gas rises into the first air pipe 4, and the liquid descends into the first water pipe 3. Then, during the transportation of the associated gas, it will be liquefied and there will be grease inside. At this time, the gas, oil and water are separated by the three-phase separator 5, and the water is discharged through the second water pipe 6. The gas enters the two-stage mist collector 15 to capture the mist particles and slurry in the gas, and then enters the gas purification processor 8. First, the debris is filtered out by the filter mesh 12, and then the harmful substances are filtered out by the activated carbon filter block 13, and then it enters the two-stage corrugated plate agglomeration separator 16 to agglomerate the extremely small water droplets in the gas into larger water droplets to further separate the moisture. The purified and filtered gas is discharged from the second air pipe 9.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas purification device for oil and gas wells, comprising an air inlet pipe (1), characterized in that: A gas-liquid separator (2) is arranged at the rear end of the air inlet pipe (1), a first water pipe (3) is arranged at the bottom of the gas-liquid separator (2), a first air pipe (4) is arranged at the top of the gas-liquid separator (2), a three-phase separator (5) is arranged between the first water pipe (3) and the first air pipe (4), the three-phase separator (5) is located at the rear end of the gas-liquid separator (2), a second water pipe (6) is arranged at the bottom of the rear end of the three-phase separator (5), an oil pipe (7) is arranged in the middle of the rear end of the three-phase separator (5), a two-stage mist collector (15) is arranged at the rear end of the first air pipe (4), the two-stage mist collector (15) is located at the rear end of the three-phase separator (5), a gas purification processor (8) is arranged at the rear end of the two-stage mist collector (15), and an air inlet hole (10) is opened at the front end of the gas purification processor (8).

2. The oil and gas well gas purification treatment device according to claim 1, characterized in that: An exhaust hole (11) is provided at the rear end of the gas purification processor (8).

3. The oil and gas well gas purification treatment device according to claim 1, characterized in that: A filter screen (12) is installed inside the gas purification processor (8).

4. The oil and gas well gas purification treatment device according to claim 3, characterized in that: An activated carbon filter block (13) is installed at the rear end of the filter screen (12), and the activated carbon filter block (13) is located inside the gas purification processor (8).

5. The oil and gas well gas purification device according to claim 1, characterized in that: A two-stage corrugated plate coalescing separator (16) is provided at the rear end of the gas purification processor (8).

6. The oil and gas well gas purification device according to claim 5, characterized in that: A second air pipe (9) is provided at the rear end of the two-stage corrugated plate coalescing separator (16).

7. The oil and gas well gas purification device according to claim 1, characterized in that: The interiors of the air intake pipe (1), the first air pipe (4) and the second air pipe (9) are provided with an anti-corrosion coating (14).

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