Natural gas desulfurization device

Abstract

The utility model discloses a natural gas desulfurization device and belongs to the technical field of ammonia production from natural gas. Comprising a desulfurization tank, an air inlet pipe arranged on the side wall of the desulfurization tank and an air outlet pipe arranged at the top end of the desulfurization tank, the push-pull opening is formed in the side wall of the desulfurization tank; the U-shaped groove is formed in the inner wall of the desulfurization tank; the rectangular frame is arranged in the U-shaped groove in a sliding manner; the desulfurization agent storage box is detachably arranged in the rectangular frame; the side, located in the push-pull opening, of the rectangular frame is connected with a baffle arranged outside the desulfurization tank, and the U-shaped groove is communicated with the push-pull opening. Through the synergistic effect of all the devices, the desulfurizing agent storage box can be conveniently taken out of the desulfurizing tank, so that a desulfurizing agent in the desulfurizing agent storage box can be conveniently replaced, and the purposes of conveniently replacing the desulfurizing agent and conveniently disassembling and assembling the desulfurizing agent storage box are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas ammonia technology field especially relates to a natural gas desulfurization device. BACKGROUND

[0002] The process of natural gas synthesis ammonia mainly includes desulfurization, secondary conversion, carbon monoxide conversion, carbon dioxide removal and methanation steps.

[0003] In the prior art, in the desulfurization step, iron sulfide desulfurizer is often used for desulfurization, and when desulfurizing, the iron oxide desulfurizer reacts with hydrogen sulfide (H□S) in natural gas to convert hydrogen sulfide into elemental sulfur or sulfate, thereby achieving the purpose of desulfurization. The natural gas desulfurization device disclosed in the patent with application number CN202122301949.3 and the natural gas purification desulfurization device disclosed in the patent with application number CN202122856153.4 can effectively desulfurize by iron oxide.

[0004] However, when the desulfurization effect of the iron oxide in the desulfurization device becomes poor in actual use, it needs to be regenerated, and the above-mentioned device is difficult to conveniently take out the iron oxide desulfurizer and also difficult to conveniently install the replaced iron oxide desulfurizer, which has certain defects in actual use. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a natural gas desulfurization device to at least achieve the purposes of convenient replacement of desulfurizer and convenient disassembly and installation of desulfurizer storage box.

[0006] The utility model aims to achieve the following technical solutions:

[0007] A natural gas desulfurization device, comprising a desulfurization tank, an air inlet pipe arranged on the side wall of the desulfurization tank, and an air outlet pipe arranged at the top end of the desulfurization tank; further comprising a push-pull opening arranged on the side wall of the desulfurization tank, a U-shaped groove arranged on the inner wall of the desulfurization tank, a rectangular frame slidingly arranged in the U-shaped groove, a desulfurizer storage box detachably arranged in the rectangular frame, and a plurality of air holes arranged on the top wall and the bottom wall of the desulfurizer storage box; one side of the rectangular frame located in the push-pull opening is connected with a baffle arranged outside the desulfurization tank, and the U-shaped groove and the push-pull opening are communicated.

[0008] Preferably, a limiting plate is arranged on the outer wall of the desulfurization tank, a limiting screw is vertically arranged on the limiting plate, and a screw hole matched with the limiting screw is arranged at the bottom end or the top end of the baffle.

[0009] Preferably, a first sliding block matched with the U-shaped groove is arranged on the outer wall of the rectangular frame.

[0010] Preferably, the desulfurizer tank is externally provided with a horizontal sliding groove, the baffle is provided with a supporting rod, and the bottom end of the supporting rod is provided with a second sliding block in sliding fit with the horizontal sliding groove.

[0011] Preferably, the inner wall of the rectangular frame is provided with a ring of supporting plates.

[0012] Preferably, the top end of the supporting plate is provided with a ring of first sealing grooves, and the bottom wall of the desulfurizer storage box is provided with first sealing strips in fit with the first sealing grooves.

[0013] Preferably, the gas outlet end of the air inlet pipe extends to the inside of the desulfurizer tank and is provided with a funnel.

[0014] Preferably, a partition plate is arranged in the desulfurizer tank between the funnel and the rectangular frame, a telescopic hose is vertically arranged on the partition plate, the top end of the telescopic hose is provided with a surrounding plate capable of vertical displacement and having an open top end, and the top end of the surrounding plate can be in contact with the bottom end of the rectangular frame.

[0015] Preferably, the top end of the surrounding plate is provided with a ring of second sealing strips, and the bottom wall of the rectangular frame is provided with second sealing grooves in fit with the second sealing strips.

[0016] Preferably, the outer wall of the surrounding plate is provided with a third sliding block, the inner wall of the desulfurizer tank is provided with a vertical sliding groove in sliding fit with the third sliding block, and the partition plate is provided with a hydraulic rod connected with the surrounding plate.

[0017] Compared with the prior art, the desulfurizer tank has the following beneficial effects:

[0018] By arranging the push-pull opening on the side wall of the desulfurizer tank, arranging the U-shaped groove in communication with the push-pull opening on the inner wall of the desulfurizer tank, arranging the rectangular frame in sliding fit in the U-shaped groove, and arranging the desulfurizer storage box in detachable fit in the rectangular frame, when the desulfurizer needs to be regenerated, the rectangular frame can be dragged at the push-pull opening, the rectangular frame gradually slides out of the U-shaped groove, until the desulfurizer storage box arranged therein is completely removed from the desulfurizer tank, at this time, the desulfurizer storage box can be directly taken out of the rectangular frame by the worker, the desulfurizer storage box after replacement of the desulfurizer is reinstalled in the rectangular frame, then the rectangular frame is pushed towards the U-shaped groove, and the desulfurizer storage box is reinstalled in the desulfurizer tank, so that the whole replacement process is extremely convenient and fast.

[0019] Through the synergistic effect of the above-mentioned devices, the desulfurizer storage box can be conveniently taken out of the desulfurizer tank, so that the desulfurizer in the desulfurizer storage box can be conveniently replaced, and the purposes of conveniently replacing the desulfurizer and conveniently disassembling and installing the desulfurizer storage box are achieved.

[0020] By connecting the side of the rectangular frame located inside the sliding opening to a baffle plate located outside the desulfurization tank, the sliding opening can be sealed off by the baffle plate, preventing natural gas from escaping directly to the outside of the desulfurization tank along the sliding opening, thus avoiding environmental pollution and safety accidents such as explosions. Furthermore, the baffle plate's location outside the desulfurization tank facilitates the sliding of the rectangular frame, improving the ease of replacing the desulfurizing agent storage box. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of Example 1 from the front view.

[0022] Figure 2 for Figure 1 A schematic diagram of the U-shaped groove from a top view.

[0023] Figure 3 for Figure 1 A top-view cross-sectional view of the desulfurizing agent storage box;

[0024] Figure 4 This is a schematic diagram of the structure of the first sealing strip from a bottom-view perspective.

[0025] Figure 5 for Figure 1 A cross-sectional view of the structure after the enclosure panels are installed, viewed from the front.

[0026] In the diagram: 1-Desulfurization tank, 2-Inlet pipe, 3-Outlet pipe, 4-Push-pull port, 5-U-shaped groove, 6-Rectangular frame, 7-Desulfurizing agent storage box, 8-Baffle, 9-Limiting plate, 10-Limiting screw, 11-Screw hole, 13-Horizontal slide groove, 14-Second slider, 15-Support plate, 16-First sealing strip, 17-Function funnel, 18-Baffle, 19-Telescopic hose, 20-Enclosure plate, 21-Third slider, 22-Vertical slide groove, 23-Hydraulic rod. Detailed Implementation

[0027] Example 1

[0028] A natural gas desulfurization device, such as Figure 1 As shown, it includes a desulfurization tank 1, an inlet pipe 2 disposed on the side wall of the desulfurization tank 1, and an outlet pipe 3 disposed at the top of the desulfurization tank 1; in addition, as Figures 1-3 As shown, the desulfurization device also includes a push-pull port 4 disposed on the side wall of the desulfurization tank 1, a U-shaped groove 5 disposed on the inner wall of the desulfurization tank 1, a rectangular frame 6 slidably disposed within the U-shaped groove 5, a desulfurizing agent storage box 7 detachably disposed within the rectangular frame 6, and multiple vent holes (existing technology, not shown in the figure) disposed on the top and bottom walls of the desulfurizing agent storage box 7; Figures 1-3As shown, the rectangular frame 6, located inside the push-pull opening 4, is connected to a baffle 8 disposed outside the desulfurization tank 1 on one side. The U-shaped groove 5 communicates with the push-pull opening 4. Furthermore, the outer wall of the rectangular frame 6 is provided with a first slider (existing technology, not shown in the figure) that slides smoothly within the U-shaped groove 5, facilitating the smooth sliding of the rectangular frame 6 within the U-shaped groove 5. Further, as... Figure 1 and Figure 3 As shown, a support plate 15 is provided around the inner wall of the rectangular frame 6. The desulfurizing agent storage box 7 is placed directly on the support plate 15. Furthermore, to improve the sealing between the desulfurizing agent storage box 7 and the support plate 15, a first sealing groove (existing technology, not shown in the figure) is provided at the top of the support plate 15, and a first sealing strip 16 (e.g., [missing information]) is provided on the bottom wall of the desulfurizing agent storage box 7, which is adapted to the first sealing groove. Figure 4 (As shown). The desulfurizing agent storage box 7 generally includes a box body with an open top and a top cover at the top of the box body. The top cover and the box body are connected by bolts or other existing technologies. Iron oxide desulfurizing agent (this is existing technology) is laid flat inside the box body. Ventilation holes are located on the bottom wall of the box body and the top cover. Because the overall structure of the desulfurizing agent storage box 7 is relatively simple, its specific structure is not shown in the figure.

[0029] Working principle: Natural gas is introduced into desulfurization tank 1 through inlet pipe 2. The natural gas diffuses upwards within desulfurization tank 1, and then enters desulfurizing agent storage box 7 through the vent holes on the bottom wall. Hydrogen sulfide gas reacts with the iron oxide desulfurizing agent in the storage box 7, achieving desulfurization. The remaining gas passes through the vent holes on the top wall of the storage box 7 and is discharged to the next processing stage through outlet pipe 3. When the iron oxide in the storage box 7 needs regeneration, the baffle 8 is dragged to gradually slide the rectangular frame 6 out of the U-shaped groove 5 until the desulfurizing agent storage box 7 is completely removed from desulfurization tank 1. At this point, the operator directly removes the desulfurizing agent storage box 7 from the rectangular frame 6. The desulfurizing agent can be replaced. After the replacement is completed, the desulfurizing agent storage box 7 is placed back on the support plate 15. When placing it, the first sealing strip 16 must be fully embedded in the first sealing groove. Then push the baffle 8 to push the rectangular frame 6 towards the U-shaped groove 5 and reinstall the desulfurizing agent storage box 7 into the desulfurization tank 1. The whole replacement process is extremely convenient and quick.

[0030] Example 2

[0031] Based on Example 1, such as Figure 5As shown, the gas outlet end of the gas inlet pipe 2 extends to the inside of the desulfurization tank 1 and is provided with a funnel 17. In actual implementation, a certain amount of alkali solution is filled in the desulfurization tank 1 to perform preliminary desulfurization by the alkali solution before desulfurization by the iron oxide. The bottom end of the funnel 17 is in contact with the alkali solution or is slightly immersed in the alkali solution. Further, because the rectangular frame 6 and the U-shaped groove 5 are in sliding connection and there is a certain gap between the two, the natural gas can diffuse upward along the gap and be discharged from the gas outlet pipe 3 without desulfurization by the iron oxide. Based on this, as shown in Figure 5 As shown, the desulfurization tank 1 is provided with a partition plate 18 between the funnel 17 and the rectangular frame 6, and a telescopic hose 19 (such as a transparent steel wire hose in the prior art) is vertically arranged on the partition plate 18. The top end of the telescopic hose 19 is provided with a surrounding plate 20 capable of vertically moving and having an open top end. The top end of the surrounding plate 20 can be in contact with the bottom end of the rectangular frame 6. The top end of the telescopic hose 19 is in communication with the inside of the surrounding plate 20, and the bottom end of the telescopic hose 19 is in communication with the space below the surrounding plate 20. Further, in order to improve the sealing between the surrounding plate 20 and the frame of the rectangular frame 6, the top end of the surrounding plate 20 is provided with a second sealing strip, and the bottom wall of the rectangular frame 6 is provided with a second sealing groove matched with the second sealing strip. The second sealing strip and the second sealing groove are not shown in the figure, and the specific structure can be referred to the first sealing strip 16 and the first sealing groove. Further, as shown in Figure 5 As shown, the outer wall of the surrounding plate 20 is provided with a third sliding block 21, the inner wall of the desulfurization tank 1 is provided with a vertical sliding groove 22 in sliding cooperation with the third sliding block 21, and the partition plate 18 is provided with a hydraulic rod 23 connected with the surrounding plate 20.

[0032] Working principle: before the natural gas is introduced into the desulfurization tank 1, the hydraulic rod 23 is started to move the surrounding plate 20 upward until the top end of the surrounding plate 20 is in contact with the bottom end of the rectangular frame 6 and the second sealing strip is completely inserted into the second sealing groove, so as to realize the sealing between the surrounding plate 20 and the rectangular frame 6. In this process, the third sliding block 21 slides upward in the vertical sliding groove 22,

[0033] When the iron oxide desulfurizer needs to be regenerated, the hydraulic rod 23 is retracted to separate the second sealing strip from the second sealing groove, and then the desulfurizer can be replaced in the manner of example 1.

[0034] Example 3

[0035] On the basis of example 1 or 2, as shown in Figure 1 and Figure 2As shown, the outer wall of the desulfurization tank 1 is provided with a limiting plate 9, a limiting screw 10 is vertically arranged on the limiting plate 9, and a screw hole 11 is arranged at the bottom end of the baffle 8 (if the limiting plate 9 is arranged below the baffle 8, the screw hole 11 is arranged at the bottom end of the baffle 8) or the top end of the baffle 8 (if the limiting plate 9 is arranged above the baffle 8, the screw hole 11 is arranged at the top end of the baffle 8). By arranging the limiting screw 10 and the screw hole 11, the baffle 8 can be limited on the desulfurization tank 1, so as to ensure that the rectangular frame 6 connected with the baffle 8 does not horizontally displace, and further ensure that the desulfurization is smooth. Further, as shown in Figure 1 and Figure 2 As shown, the outer wall of the desulfurization tank 1 is provided with a limiting plate 9, a limiting screw 10 is vertically arranged on the limiting plate 9, and a screw hole 11 is arranged at the bottom end of the baffle 8 (if the limiting plate 9 is arranged below the baffle 8, the screw hole 11 is arranged at the bottom end of the baffle 8) or the top end of the baffle 8 (if the limiting plate 9 is arranged above the baffle 8, the screw hole 11 is arranged at the top end of the baffle 8). By arranging the limiting screw 10 and the screw hole 11, the baffle 8 can be limited on the desulfurization tank 1, so as to ensure that the rectangular frame 6 connected with the baffle 8 does not horizontally displace, and further ensure that the desulfurization is smooth. Further, as shown in

Claims

1. A natural gas desulfurization device, comprising a desulfurization tank (1), an inlet pipe (2) arranged on the side wall of the desulfurization tank (1), and an outlet pipe (3) arranged on the top end of the desulfurization tank (1); characterized in that, Further comprising a push-pull opening (4) arranged on the sidewall of the desulfurization tank (1), a U-shaped groove (5) arranged on the inner wall of the desulfurization tank (1), a rectangular frame (6) slidingly arranged in the U-shaped groove (5), a desulfurizer storage box (7) detachably arranged in the rectangular frame (6), and a plurality of air permeable holes arranged on the top wall and the bottom wall of the desulfurizer storage box (7); one side of the rectangular frame (6) located in the push-pull opening (4) is connected with a baffle (8) arranged outside the desulfurization tank (1), and the U-shaped groove (5) is in communication with the push-pull opening (4).

2. A natural gas desulphurization unit as claimed in claim 1, wherein, A limiting plate (9) is arranged on the outer wall of the desulfurization tank (1), a limiting screw (10) is vertically arranged on the limiting plate (9), and a screw hole (11) matched with the limiting screw (10) is arranged at the bottom end or the top end of the baffle (8).

3. The natural gas desulfurization device of claim 1, wherein, A first sliding block matched with the U-shaped groove (5) is arranged on the outer wall of the rectangular frame (6).

4. The natural gas desulfurization apparatus of claim 1, wherein A horizontal sliding groove (13) is arranged outside the desulfurization tank (1), a supporting rod is arranged on the baffle (8), and a second sliding block (14) matched with the horizontal sliding groove (13) is arranged at the bottom end of the supporting rod.

5. The natural gas desulfurization device of claim 1, wherein A supporting plate (15) is arranged on the inner wall of the rectangular frame (6).

6. A natural gas desulphurization unit as claimed in claim 5, wherein, A first sealing groove is arranged at the top end of the supporting plate (15), and a first sealing strip (16) matched with the first sealing groove is arranged on the bottom wall of the desulfurizer storage box (7).

7. The natural gas desulfurization device of claim 1, wherein The gas outlet end of the air inlet pipe (2) extends to the inside of the desulfurization tank (1) and is provided with a funnel (17).

8. A natural gas desulphurization unit as claimed in claim 7, wherein, A partition plate (18) is arranged in the desulfurization tank (1) and between the funnel (17) and the rectangular frame (6), a telescopic hose (19) is vertically arranged on the partition plate (18), an open-topped fence (20) capable of vertically moving is arranged at the top end of the telescopic hose (19), and the top end of the fence (20) is capable of contacting the bottom end of the rectangular frame (6).

9. A natural gas desulphurization unit as claimed in claim 8, wherein, A second sealing strip is arranged at the top end of the fence (20), and a second sealing groove matched with the second sealing strip is arranged on the bottom wall of the rectangular frame (6).

10. The natural gas desulfurization device of claim 8, wherein, A third sliding block (21) is arranged on the outer wall of the fence (20), a vertical sliding groove (22) matched with the third sliding block (21) is arranged on the inner wall of the desulfurization tank (1), and a hydraulic rod (23) connected with the fence (20) is arranged on the partition plate (18).

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