Desulfurization tank with uniform gas distribution

Abstract

The desulfurization tank is used for desulfurizing oil associated gas and comprises a main tank body, a gas inlet pipe joint, a gas distribution assembly, a partition plate, filler and a gas outlet pipe joint, the gas inlet pipe joint is communicated with the side wall of the bottom of the main tank body, and the gas outlet pipe joint is communicated with the top of the main tank body; the gas distribution assembly, the partition plate and the filler are arranged in an inner cavity of the main tank body from bottom to top; a plurality of air holes are evenly distributed in the partition plate, the inlet end of the air distribution assembly is connected with the air inlet pipe connector, and the output end of the air distribution assembly can evenly blow air into each air hole. According to the desulfurization tank with uniform gas distribution, the gas distribution assembly is arranged below the partition plate of the inner cavity of the tank body to uniformly discharge the inlet gas, so that the service life of a desulfurizing agent can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization tanks, in particular to a desulfurization tank with uniform gas distribution. Background Art

[0002] The associated gas in oil wells refers to the gas produced together with crude oil during the oil well exploitation process. Its main component is methane, and it also contains a small amount of ethane, propane, butane, hydrogen sulfide, etc. Hydrogen sulfide in the associated gas is a toxic, corrosive and explosive gas, which poses a serious threat to human health and equipment safety. Therefore, desulfurization treatment must be carried out, that is, a desulfurization tank is needed.

[0003] Most of the desulfurization agents used in the desulfurization tank for oil well associated gas are iron oxyhydroxide, which is an iron-containing inorganic compound and is widely used in the desulfurization process in industry. The desulfurization principle of iron oxyhydroxide is mainly through its porous structure and large specific surface area, chemically adsorbing sulfur-containing compounds such as hydrogen sulfide and sulfur dioxide in the waste gas or associated gas into the small holes of the desulfurization agent, thereby changing its chemical composition and achieving the purpose of purifying the gas. This adsorption is based on the chemical reaction between iron oxyhydroxide and sulfur-containing compounds to generate harmless or low-toxic sulfide products.

[0004] However, the associated gas in oil wells contains more oil and water. At the same time, the main part of the simplified chemical reaction equation for desulfurization is:

[0005] H2S + 2FeOOH → Fe2S + 3H2O

[0006] Water is also generated. Excessive water will cause the desulfurization agent to collapse, and the surface will be sealed by muddy materials, so that the associated gas cannot contact the internal desulfurization agent, and thus the internal desulfurization agent cannot be effectively utilized, resulting in a significant reduction in the desulfurization effect.

[0007] The applicant has been engaged in the research, development, production and manufacturing of desulfurization tanks and desulfurization agents for a long time. Through long-term observation, it is found that if the gas to be desulfurized passes through the desulfurization agent packing layer unevenly, it is more likely to occur local collapse and desulfurization failure. However, in the existing desulfurization tanks, the bottom of the packing layer is often only supported by a grille plate or a perforated partition plate, which cannot effectively distribute gas evenly, resulting in poor desulfurization effect. Summary of the Utility Model

[0008] The purpose of the utility model is to provide a desulfurization tank with uniform gas distribution, in which a gas distribution component is arranged below the partition plate in the inner cavity of the tank to uniformly discharge the inlet gas, and the service life of the desulfurization agent can be effectively improved.

[0009] To solve the above technical problems, the utility model adopts the following technical solutions:

[0010] The utility model relates to a desulfurization tank with uniform gas distribution for desulfurizing associated petroleum gas, which comprises a main tank body, an air inlet pipe joint, a gas distribution assembly, a partition plate, a filler and an air outlet pipe joint. The air inlet pipe joint is communicated with the side wall at the bottom of the main tank body, and the air outlet pipe joint is communicated and arranged at the top of the main tank body. The gas distribution assembly, the partition plate and the filler are arranged in the inner cavity of the main tank body from bottom to top. A plurality of air permeable holes are uniformly arranged on the partition plate. The inlet end of the gas distribution assembly is connected with the air inlet pipe joint, and the output end of the gas distribution assembly can uniformly blow air into each air permeable hole.

[0011] Further, the gas distribution assembly comprises a main horizontal pipe and longitudinal branch pipes. One end of the main horizontal pipe is connected with the inner port of the air inlet pipe joint through a joint flange plate. A plurality of longitudinal branch pipes are vertically and fixedly connected to the main horizontal pipe and are communicated with each other through through holes. An air outlet for blowing air upward is arranged on the top wall of the longitudinal branch pipe.

[0012] Further, the gas distribution assembly further comprises a nozzle, and the nozzle is connected to the threaded hole of the air outlet of the longitudinal branch pipe through a thread, and the nozzle faces upward toward the air permeable hole.

[0013] Further, it further comprises a gas distribution cap. The threaded sleeve at the bottom of the gas distribution cap is threadedly connected to the threaded hole at the top section of the air permeable hole. The top of the gas distribution cap is a convex arc top cover, and air permeable small holes are arranged on the convex arc top cover.

[0014] Further, the bottom section of the air permeable hole is set in the shape of a square flare with a large opening facing downward.

[0015] Further, a tapered tip plate frame is fixedly connected to the bottom edge of the square flare. The tapered tip plate frame is a square plate frame and the edges of the plate are tapered plates with the tips facing downward.

[0016] Further, it further comprises a sewage discharge pipe, and the sewage discharge pipe is communicated with the lowest point of the bottom wall of the main tank body.

[0017] Further, it further comprises a water injection pipe. A manhole is arranged in the middle of the top wall of the main tank body, and the water injection pipe and the air outlet pipe joint are both communicated with the side wall of the manhole.

[0018] Further, it further comprises an upper grid plate, and the upper grid plate is located at the bottom of the manhole to block the filler.

[0019] Compared with the prior art, the beneficial technical effects of the utility model are:

[0020] The utility model relates to a desulfurization tank with uniform gas distribution. By arranging a gas distribution component below a partition plate and uniformly discharging the introduced associated gas to be desulfurized upward, the gas can flow upward uniformly through ventilation holes, avoiding excessive local passage of the associated gas while little or no gas passes through other parts, preventing local collapse of the packing, and improving the desulfurization efficiency and the service life of the packing.

[0021] In addition, through the reasonable arrangement of the main horizontal pipe and vertical branch pipes, the air outlet holes for blowing upward can be uniformly arranged on the bottom cross-section of the main tank body, ensuring uniform gas distribution. By installing nozzles, it can ensure that the blown associated gas mainly passes upward through the ventilation holes and then flows upward, reducing the flow rate to other positions. By installing a gas distribution cap on the ventilation hole, the upward convex arc top cover can block the granular packing and prevent it from leaking downward. At the same time, the convex arc top cover increases the gas distribution area and reduces the gas distribution resistance. By setting the bottom section of the ventilation hole as a square flare and equipping it with a tapered tip plate frame, the oil and water in the associated gas can be trapped between the gas distribution cap and the ventilation hole wall, gather downward, and converge to the tip of the tapered tip plate frame and then drip downward, achieving a certain effect of dehydrating and deoiling. The oil and water gather at the bottom of the main tank body and are finally discharged through the sewage pipe. By adding a water injection pipe, it is convenient to inject water for rinsing and cleaning when the main tank body is cleaned and maintained. By adding an upper grid plate at the top, the granular packing can be blocked to prevent it from being discharged through the gas outlet pipe joint along with the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further describes the present utility model with reference to the drawings.

[0023] Figure 1 It is a schematic front sectional view of the desulfurization tank with uniform gas distribution of the present utility model;

[0024] Figure 2 It is a schematic top view of the desulfurization tank with uniform gas distribution of the present utility model;

[0025] Figure 3 It is a schematic top view of the gas distribution component in the present utility model;

[0026] Figure 4 For Figure 1 It is a partial enlarged structural view of the ventilation hole part in

[0027] Description of the reference numerals in the drawings: 1. Main tank body; 101. Saddle; 102. Manhole; 103. Inspection port; 104. Suspension seat; 2. Inlet gas pipe joint; 3. Gas distribution component; 301. Main horizontal pipe; 302. Vertical branch pipe; 303. Nozzle; 304. Joint flange plate; 4. Partition plate; 401. Ventilation hole; 402. Tapered tip plate frame; 5. Gas distribution cap; 6. Packing; 7. Upper grid plate; 8. Outlet gas pipe joint; 9. Sewage pipe; 10. Water injection pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The core of the present utility model is to provide a desulfurization tank with uniform gas distribution. A gas distribution component is arranged below the partition plate in the inner cavity of the tank to uniformly discharge the inlet gas, which can effectively improve the service life of the desulfurizer.

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. For the description of up, down, left, and right in the following specific embodiments, it is all with reference to the accompanying drawings of the specification and should not be construed as a limitation to the present utility model.

[0030] Referring to the accompanying drawings, Figure 1 is the main sectional view structure diagram of the desulfurization tank with uniform gas distribution of the present utility model; Figure 2 is the top view structure diagram of the desulfurization tank with uniform gas distribution of the present utility model; Figure 3 is the top view structure diagram of the gas distribution component in the present utility model; Figure 4 is Figure 1 the partial enlarged structure diagram of the air permeable hole part in

[0031] In a specific embodiment, as Figures 1 - 4 shown, a desulfurization tank with uniform gas distribution, which is used for desulfurizing associated petroleum gas, includes a main tank body 1, an inlet pipe joint 2, a gas distribution component 3, a partition plate 4, a filler 6 and an outlet pipe joint 8. The inlet pipe joint 2 is connected to the bottom side wall of the main tank body 1, and the outlet pipe joint 8 is connected and arranged at the top of the main tank body 1. The inlet pipe joint 2 introduces the associated gas to be desulfurized, and the outlet pipe joint 8 outputs the desulfurized associated gas. The gas distribution component 3, the partition plate 4 and the filler 6 are arranged in the inner cavity of the main tank body 1 from bottom to top. The filler 6 is a hydroxyl iron oxide filler, which is used to remove hydrogen sulfide in the associated gas. A plurality of air permeable holes 401 are uniformly arranged on the partition plate 4. The inlet end of the gas distribution component 3 is connected to the inlet pipe joint 2, and the output end of the gas distribution component 3 can uniformly blow air into each air permeable hole 401.

[0032] By arranging the gas distribution component 3 below the partition plate 4 and uniformly discharging the introduced associated gas to be desulfurized upward, it can uniformly flow upward after passing through the air permeable holes 401, avoiding excessive passing of the associated gas locally while very little or no gas passing in other parts, avoiding local collapse of the filler, and improving the desulfurization efficiency and the service life of the filler.

[0033] In a specific embodiment of the present utility model, as Figure 1 , Figure 3 and Figure 4As shown in the figure, the gas distribution component 3 includes a main horizontal pipe 301 and longitudinal branch pipes 302. One end of the main horizontal pipe 301 is connected to the inner port of the air inlet pipe joint 2 through a joint flange plate 304. A plurality of longitudinal branch pipes 302 are vertically welded and connected to the main horizontal pipe 301, and the two are communicated through through holes. Air outlet holes for blowing air upward are formed on the top wall of the longitudinal branch pipes 302.

[0034] Specifically, as Figure 3 and Figure 4 shown, both ends of the longitudinal branch pipes 302 are blocked by baffles and are close to but do not contact the inner wall of the main tank body 1.

[0035] Specifically, as Figure 3 and Figure 4 shown, the gas distribution component 3 further includes a nozzle 303. The nozzle 303 is threadedly connected to the threaded hole of the air outlet hole of the longitudinal branch pipe 302, and the nozzle 303 faces upward toward the air permeable hole 401.

[0036] Through the reasonable arrangement of the main horizontal pipe 301 and the longitudinal branch pipes 302, air outlet holes for blowing air upward can be evenly arranged on the bottom cross-section of the main tank body 1, ensuring uniform gas distribution; by installing the nozzle 303, it can ensure that the associated gas blown upward mainly flows upward through the air permeable hole 401, reducing the flow amount to other positions.

[0037] In a specific embodiment of the present utility model, as Figure 1 and Figure 4 shown, the desulfurization tank with uniform gas distribution of the present utility model further includes a gas distribution cap 5. The threaded sleeve at the bottom of the gas distribution cap 5 is threadedly connected to the threaded hole at the top section of the air permeable hole 401. The top of the gas distribution cap 5 is a convex arc top cover, and air permeable small holes are formed on the convex arc top cover, and a plurality of the air permeable small holes are evenly arranged.

[0038] By installing the gas distribution cap 5 on the air permeable hole 401, the upward convex arc top cover can block the granular filler 6 and prevent it from leaking downward; at the same time, the convex arc top cover increases the gas distribution area and reduces the gas distribution resistance.

[0039] In a specific embodiment of the present utility model, as Figure 1 and Figure 4 shown, the bottom section of the air permeable hole 401 is set in the shape of a square trumpet with a large opening facing downward.

[0040] Specifically, as Figure 1 and Figure 4 shown, a tapered tip plate frame 402 is fixedly connected to the bottom edge of the square trumpet. The tapered tip plate frame 402 is a square plate frame and the plate edges are all tapered plates with the tips facing downward.

[0041] Specifically, as Figure 1As shown in the figure, the desulfurization tank with uniform gas distribution of the present utility model further includes a blowdown pipe 9, and the blowdown pipe 9 is connected to the lowest point of the bottom wall of the main tank body 1.

[0042] By setting the bottom section of the air permeation hole 401 as a square flared opening and equipping it with a tapered tip plate frame 402, it is possible to trap the oil and water in the associated gas between the gas distribution cap 5 and the wall of the air permeation hole 401, and make them gather downward, converge to the tip of the edge of the tapered tip plate frame 402, and drip downward, achieving a certain effect of dehydrating and deoiling. The oil and water gather at the bottom of the main tank body 1 and are finally discharged through the blowdown pipe 9.

[0043] In a specific embodiment of the present utility model, as Figure 1 shown in the figure, the desulfurization tank with uniform gas distribution of the present utility model further includes a water injection pipe 10. A manhole 102 is provided at the middle position of the top wall of the main tank body 1, and the water injection pipe 10 and the gas outlet pipe joint 8 are both connected to the side wall of the manhole 102.

[0044] Specifically, as Figure 1 shown in the figure, the desulfurization tank with uniform gas distribution of the present utility model further includes an upper grid plate 7, and the upper grid plate 7 is located at the bottom of the manhole 102 to block the packing 6.

[0045] By adding the water injection pipe 10, it is convenient to inject water for rinsing and cleaning when the main tank body 1 is cleaned and maintained. By adding the upper grid plate 7 at the top to block the granular packing 6, it can prevent it from being discharged through the gas outlet pipe joint 8 along with the airflow.

[0046] The working principle of the desulfurization tank with uniform gas distribution of the present utility model: The associated gas to be desulfurized enters the gas distribution assembly 3 at the bottom of the cavity of the main tank body 1 through the intake pipe joint 2. The associated gas passes through the main horizontal pipe 301 and the longitudinal branch pipe 302, and finally sprays upward through the nozzle 303 into the air permeation hole 401. The associated gas continues to flow upward through the gas distribution cap 5 into the packing 6, and the porous hydroxyl iron oxide granular material adsorbs and chemically reacts with the associated gas to remove hydrogen sulfide therein. Continuing to flow upward, the desulfurization process is gradually completed, and finally it is discharged through the gas outlet pipe joint 8 at the manhole 102. Among them, when the nozzle 303 sprays the associated gas upward into the air permeation hole 401, since there are more oil and gas and water vapor particles carried by the associated gas at this time, they will adhere to the bottom surface of the gas distribution cap 5 and the inner wall of the air permeation hole 401, and accumulate and flow downward, converge to the tip of the edge of the tapered tip plate frame 402, drip downward, fall to the bottom of the main tank body 1, and are finally discharged through the blowdown pipe 9, achieving a certain dehydrating and deoiling effect before desulfurization.

[0047] In summary, for the desulfurization tank with uniform gas distribution of the present utility model, by arranging the gas distribution assembly 3 below the partition plate 4 and uniformly discharging the introduced associated gas to be desulfurized upward, it can uniformly flow upward after passing through the ventilation holes 401, avoiding excessive passage of the associated gas in some parts while little or no ventilation in other parts, preventing local collapse of the packing, and improving the desulfurization efficiency and the service life of the packing. In addition, through the reasonable arrangement of the main horizontal pipe 301 and the longitudinal branch pipe 302, the outlet holes for blowing air upward can be uniformly arranged on the bottom cross-section of the main tank body 1, ensuring uniform gas distribution; by installing the nozzle 303, it can ensure that the upward blown associated gas mainly passes upward through the ventilation holes 401 and then flows upward, reducing the flow amount to other positions. By installing the gas distribution cap 5 on the ventilation holes 401, the upward convex arc top cover can block the granular packing 6 and prevent it from leaking downward; at the same time, the convex arc top cover increases the gas distribution area and reduces the gas distribution resistance. By setting the bottom section of the ventilation holes 401 as a square flared opening and equipping it with a tapered tip plate frame 402, the oil and water in the associated gas can be trapped between the gas distribution cap 5 and the wall of the ventilation holes 401, gather downward, and converge to the tip of the plate edge of the tapered tip plate frame 402 and then drip downward, achieving a certain effect of dehydration and deoiling. The oil and water gather at the bottom of the main tank body 1 and are finally discharged through the sewage discharge pipe 9. By adding a water injection pipe 10, it is convenient to inject water for flushing and cleaning when the main tank body 1 is cleaned and maintained. By adding an upper grid plate 7 at the top, the granular packing 6 can be blocked to prevent it from being discharged through the gas outlet pipe joint 8 along with the airflow.

[0048] The embodiments described above are only used to describe the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A desulfurization tank with uniform gas distribution, used for desulfurizing petroleum associated gas, characterized by: The invention comprises a main tank body (1), an air inlet pipe joint (2), an air distribution assembly (3), a partition (4), a filler (6) and an air outlet pipe joint (8); the air inlet pipe joint (2) is connected to the bottom side wall of the main tank body (1), and the air outlet pipe joint (8) is connected to the top of the main tank body (1); the air distribution assembly (3), the partition (4) and the filler (6) are arranged in the inner cavity of the main tank body (1) from bottom to top; a plurality of air holes (401) are evenly arranged on the partition (4); the inlet end of the air distribution assembly (3) is connected to the air inlet pipe joint (2), and the output end of the air distribution assembly (3) can evenly blow air into each of the air holes (401).

2. The desulfurization tank with uniform gas distribution according to claim 1 is characterized in that: The air distribution assembly (3) comprises a main transverse pipe (301) and a longitudinal branch pipe (302); one end of the main transverse pipe (301) is connected to the inner port of the air inlet pipe joint (2) via a joint flange plate (304); a plurality of longitudinal branch pipes (302) are vertically fixedly connected to the main transverse pipe (301) and the two are connected via through holes; and an outlet hole for blowing air upward is provided on the top wall of the longitudinal branch pipe (302).

3. The desulfurization tank with uniform gas distribution according to claim 2 is characterized in that: The air distribution assembly (3) further comprises a nozzle (303), wherein the nozzle (303) is connected to a threaded hole at an outlet of the longitudinal branch pipe (302) via a thread, and the nozzle (303) is directed upward toward the air vent (401).

4. The desulfurization tank with uniform gas distribution according to claim 1, characterized in that: It also comprises an air distribution cap (5), wherein a threaded sleeve at the bottom of the air distribution cap (5) is threadedly connected to a threaded hole at the top section of the air vent (401), and the top of the air distribution cap (5) is a convex arc top cover, and a small air vent is formed on the convex arc top cover.

5. The desulfurization tank with uniform gas distribution according to claim 4 is characterized in that: The bottom section of the air vent (401) is configured to be in the shape of a square trumpet with the wide opening facing downward.

6. The desulfurization tank with uniform gas distribution according to claim 5, characterized in that: A cone-tip plate frame (402) is fixedly connected to the bottom edge of the square bell mouth. The cone-tip plate frame (402) is a square plate frame and the plate edges are all cone plates with the tips pointing downwards.

7. The desulfurization tank with uniform gas distribution according to any one of claims 4 to 6, characterized in that: It also comprises a sewage discharge pipe (9), wherein the sewage discharge pipe (9) is connected to the lowest point of the bottom wall of the main tank body (1).

8. The desulfurization tank with uniform gas distribution according to claim 7, characterized in that: It also comprises a water injection pipe (10), a manhole (102) is provided in the middle of the top wall of the main tank body (1), and the water injection pipe (10) and the air outlet pipe joint (8) are both connected to the side wall of the manhole (102).

9. The desulfurization tank with uniform gas distribution according to claim 8, characterized in that: It also comprises an upper grid plate (7), wherein the upper grid plate (7) is located at the bottom of the manhole (102) to block the filler (6).

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