Energy-saving device for gasoline hydrogenation workshop water washing tower

Abstract

The utility model relates to alcohol hydrogen device technical field, and disclose a kind of water scrubbing tower energy-saving device for gasoline hydrogenation workshop, including upper tower body and lower tower body, the top of upper tower body is provided with filter assembly, and the inner wall of upper tower body is provided with multilayer high-efficiency wire mesh demister, the inner wall of upper tower body is provided with spray assembly.The water scrubbing tower energy-saving device for gasoline hydrogenation workshop is provided with gas outlet, filter box, mounting groove, filter screen frame, activated carbon filter screen, sealing ring and hydrogen outlet, by setting multilayer high-efficiency wire mesh demister in upper tower body top area, can better demist breakage, by being provided with activated carbon filter screen, residual methanol molecule in hydrogen can be adsorbed, reduce methanol content in hydrogen, improve water scrubbing tower top demethanol effect, effectively solve the problem that methanol hydrogen around methanol peculiar smell is big, improve workshop working environment.

Description

Technical Field

[0001] This utility model relates to the technical field of methanol-to-hydrogen equipment, specifically an energy-saving device for a water washing tower in a gasoline-to-hydrogen production workshop. Background Technology

[0002] In chemical production processes such as gasoline hydrorefining and methanol-to-hydrogen, water washing towers are key equipment, mainly used to wash and purify the hydrogen produced by the reaction, removing impurities such as methanol and carbon dioxide to obtain high-purity hydrogen products.

[0003] The prior art patent document CN217490336U provides a water washing tower for a skid-mounted methanol-to-hydrogen unit. This device adopts the demineralized water washing principle and adds the demisting and foam breaking function of the water washing tower and the demineralized water inlet spray function, which can provide a strong guarantee for the subsequent membrane separation hydrogen purification unit.

[0004] The existing technology described above can process methanol by spray washing with demineralized water, but the methanol removal effect at the top of the water washing tower is poor during the process, resulting in a strong methanol odor around the methanol-to-hydrogen production line. The device cannot effectively filter the gas outlet. Furthermore, the contact efficiency between the demineralized water spray from a single nozzle and the mixed gas is low, resulting in poor washing effect. Therefore, we need an energy-saving device for a water washing tower in a gasoline-to-hydrogen production workshop. Utility Model Content

[0005] The purpose of this invention is to provide an energy-saving device for a water washing tower in a gasoline hydrogen production workshop, in order to solve the problems mentioned in the background art, such as poor methanol removal effect at the top of the water washing tower, resulting in a strong methanol odor around the methanol hydrogen production process, and the inability of the device to effectively filter the gas outlet.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an energy-saving device for a water washing tower in a gasoline hydrogen production workshop, comprising an upper tower body and a lower tower body, wherein a filter assembly is provided at the top of the upper tower body, and a multi-layer high-efficiency wire mesh demister is provided on the inner wall of the upper tower body, and a spray assembly is provided on the inner wall of the upper tower body.

[0007] The filter assembly includes an air outlet, and a filter box is fixedly connected to one end of the air outlet. The inner wall of the filter box is provided with an installation groove, and a filter screen frame is slidably connected to the inner wall of the installation groove. An activated carbon filter screen is provided on the inner wall of the filter screen frame, and a sealing ring is provided on the inner wall of the filter screen frame. A hydrogen outlet is fixedly connected to one side of the filter box.

[0008] The spray assembly includes a fixed frame, and an annular water pipe is fixedly connected to the bottom of the fixed frame by bolts. A threaded joint is fixedly connected to the outer wall of the annular water pipe, and an atomizing nozzle is threadedly connected to one end of the threaded joint. A desalination inlet is fixedly connected to the inner wall of the upper tower.

[0009] Preferably, the inner wall of the lower tower body is provided with a mixed gas inlet, and the inner wall of the lower tower body is fixedly connected with an inclined top. The inner wall of the lower tower body is provided with two floating valve trays, the inner wall of the upper tower body is provided with two fixed trays, and Pall ring packing is provided between the two fixed trays. The bottom of the lower tower body is fixedly connected with a washing water return port.

[0010] Preferably, the filter box forms a sliding structure with the filter screen frame via a mounting groove, and the inner wall of the mounting groove is in contact with the outer wall of the filter screen frame.

[0011] Preferably, the top of the filter frame is provided with a cover plate, and a handle is fixedly connected to the top of the cover plate.

[0012] Preferably, the number of atomizing nozzles is multiple, and the multiple atomizing nozzles are distributed in a ring at equal intervals.

[0013] Preferably, one end of the desalinated water inlet extends into the upper tower body and is connected to the annular water pipe.

[0014] Preferably, the gas mixture inlet is inclined downwards.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0016] First, this utility model is equipped with an outlet, a filter box, an installation groove, a filter screen frame, an activated carbon filter, a sealing ring, and a hydrogen outlet. By setting a multi-layer high-efficiency wire mesh demister in the top area of ​​the upper tower, it can better remove mist and break up condensation. By setting an activated carbon filter, it can adsorb residual methanol molecules in hydrogen, reduce the methanol content in hydrogen, improve the methanol removal effect at the top of the water washing tower, effectively solve the problem of strong methanol odor around methanol-to-hydrogen production, and improve the workshop working environment.

[0017] Secondly, this utility model is equipped with a fixed frame, annular water pipe, threaded joint, atomizing nozzle and demineralized water inlet. It uses multiple atomizing nozzles that are evenly spaced and distributed in an annular pattern to make the demineralized water sprayed out more evenly, improve the contact efficiency with the mixed gas, and enhance the methanol washing effect. The inclined mixed gas inlet can effectively prevent demineralized water from entering the mixed gas pipeline. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the upper and lower tower structures of this utility model;

[0020] Figure 3 This is a schematic diagram of the upper tower and filter box structure of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] The components are as follows: 1. Upper tower body; 2. Lower tower body; 3. Filter assembly; 301. Gas outlet; 302. Filter box; 303. Mounting slot; 304. Filter screen frame; 305. Activated carbon filter screen; 306. Sealing ring; 307. Hydrogen outlet; 4. Multi-layer high-efficiency wire mesh demister; 5. Spray assembly; 501. Fixing frame; 502. Annular water pipe; 503. Threaded joint; 504. Atomizing nozzle; 505. Demineralized water inlet; 6. Mixed gas inlet; 7. Sloping top; 8. Floating valve tray; 9. Fixed tray; 10. Pall ring packing; 11. Wash water return port. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4 As shown, an energy-saving device for a water washing tower in a gasoline refueling and hydrogen production workshop includes an upper tower body 1 and a lower tower body 2. A filter assembly 3 is installed at the top of the upper tower body 1, and a multi-layer high-efficiency wire mesh demister 4 is installed on the inner wall of the upper tower body 1. A spray assembly 5 is also installed on the inner wall of the upper tower body 1. The filter assembly 3 includes an air outlet 301, and a filter box 302 is fixedly connected to one end of the air outlet 301. An installation groove 303 is provided on the inner wall of the filter box 302, and a filter screen frame 304 is slidably connected to the inner wall of the installation groove 303. The inner wall of the filter box 304 is provided with an activated carbon filter screen 305, and the inner wall of the filter screen frame 304 is provided with a sealing ring 306. A hydrogen outlet 307 is fixedly connected to one side of the filter box 302. The spray assembly 5 includes a fixing frame 501, and the bottom of the fixing frame 501 is fixedly connected to an annular water pipe 502 by bolts. A threaded joint 503 is fixedly connected to the outer wall of the annular water pipe 502, and an atomizing nozzle 504 is threadedly connected to one end of the threaded joint 503. A demineralized water inlet 505 is fixedly connected to the inner wall of the upper tower body 1.

[0025] Through the above technical solution, by setting a multi-layer high-efficiency wire mesh demister 4 in the top area of ​​the upper tower body 1, better demisting and foam breaking can be achieved. By setting an activated carbon filter 305, residual methanol molecules in hydrogen can be adsorbed, reducing the methanol content in hydrogen and improving the methanol removal effect at the top of the water washing tower. This effectively solves the problem of strong methanol odor around methanol-to-hydrogen production and improves the workshop working environment. The use of multiple equally spaced, ring-shaped atomizing nozzles 504 allows the demineralized water to be sprayed more evenly, improving the contact efficiency with the mixed gas and enhancing the methanol washing effect. The inclined mixed gas inlet 6 can effectively prevent demineralized water from entering the mixed gas pipeline.

[0026] Specifically, the inner wall of the lower tower body 2 is provided with a mixed gas inlet 6, and the inner wall of the lower tower body 2 is fixedly connected with an inclined top 7. The inner wall of the lower tower body 2 is provided with two floating valve trays 8, the inner wall of the upper tower body 1 is provided with two fixed trays 9, and Pall ring packing 10 is provided between the two fixed trays 9. The bottom of the lower tower body 2 is fixedly connected with a washing water return port 11.

[0027] Through the above technical solution, by setting Pall ring packing 10, the mixed gas and demineralized water can be better contacted and mixed; a liquid level gauge is set on the side of the lower tower body 2, and the liquid level gauge is connected to the lower tower body 2. By setting the liquid level gauge, the liquid level in the guide tower body can be observed, which is convenient for control.

[0028] Specifically, the filter box 302 forms a sliding structure with the filter screen frame 304 through the mounting groove 303, and the inner wall of the mounting groove 303 is in contact with the outer wall of the filter screen frame 304.

[0029] With the above technical solution, when installing the filter frame 304, it can be inserted into the mounting groove 303 of the filter box 302 for easy installation. After installation, the outer wall of the sealing ring 306 on the filter frame 304 fits against the inner wall of the mounting groove 303, enhancing the sealing performance and preventing gas leakage. When regularly maintaining the activated carbon filter 305, the filter frame 304 can be pulled out from the mounting groove 303 of the filter box 302 by using the handle, making it easy to clean or replace the activated carbon filter 305. The operation is simple and convenient. Through the multi-layer high-efficiency wire mesh demister 4 for demisting and breaking the foam, and the filtration of the activated carbon filter 305, gas purification is achieved under the premise of energy saving.

[0030] Specifically, the top of the filter frame 304 is provided with a cover plate, and a handle is fixedly connected to the top of the cover plate.

[0031] With the above technical solution, the cover plate is placed on the filter box 302, which enhances the sealing performance and prevents foreign objects from entering and affecting the filtration effect; the handle makes it easy for staff to lift the cover plate and filter screen frame 304, making operation convenient.

[0032] Specifically, there are multiple atomizing nozzles 504, and the multiple atomizing nozzles 504 are distributed in a ring at equal intervals.

[0033] The above technical solution, by setting multiple atomizing nozzles 504, ensures that the demineralized water can evenly cover the cross section of the tower, increases the gas-liquid contact area, enhances the methanol washing effect, and improves the water washing efficiency.

[0034] Specifically, one end of the desalinated water inlet 505 extends into the upper tower body 1 and is connected to the annular water pipe 502.

[0035] The above technical solution provides a stable delivery channel for demineralized water through the demineralized water inlet 505, allowing it to smoothly enter the annular water pipe 502 and be sprayed out through the atomizing nozzle 504.

[0036] Specifically, the air-fuel mixture inlet 6 is set at a downward angle.

[0037] Through the above technical solution, the inclined mixed gas inlet 6, by utilizing gravity and the tilt angle, in conjunction with the inclined top 7, effectively prevents the demineralized water from flowing back into the mixed gas pipeline, ensuring the safety of upstream equipment and pipelines.

[0038] In operation, the demineralized water first flows into the annular water pipe 502 through the demineralized water inlet 505, and is then sprayed out through multiple equally spaced annularly distributed atomizing nozzles 504, forming a fine and uniform water mist. The mixed gas containing impurities such as methanol enters the tower inclined downwards from the mixed gas inlet 6 of the lower tower body 2. The mixed gas passes sequentially through two floating valve trays 8. As the gas rises, it opens the floating valves and passes through the valve holes at a certain speed, bubbling in the liquid layer on the trays, forming a gas-liquid interface. This promotes full contact and mixing of the mixed gas and demineralized water on the trays, resulting in mass transfer and preliminary washing of impurities such as methanol from the mixed gas. After preliminary washing, the mixed gas rises to the upper tower body 1. Passing through the fixed tray 9 and Pall ring packing 10, the mixed gas and demineralized water fully contact and mix on the surface and in the gaps of the Pall ring packing 10. The mass transfer process is enhanced in one step to improve the washing efficiency of impurities such as methanol. The residual methanol and other impurities are washed away. The washed mixed gas continues to rise and comes into contact with the water mist sprayed from the atomizing nozzle 504 for further washing. The washed gas passes through the multi-layer high-efficiency wire mesh demister 4, which removes mist and breaks up the foam. The gas enters the filter box 302 through the gas outlet 301. The activated carbon filter 305 in the filter frame 304 uses its rich pore structure and strong adsorption capacity to adsorb residual methanol molecules and other impurities. The purified hydrogen is discharged from the hydrogen outlet 307 on one side of the filter box 302 to the subsequent pipeline for further treatment. This completes the entire process. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving device for a water washing tower in a gasoline refueling and hydrogen production workshop, comprising an upper tower body (1) and a lower tower body (2), characterized in that: The top of the upper tower body (1) is provided with a filter assembly (3), and the inner wall of the upper tower body (1) is provided with a multi-layer high-efficiency wire mesh demister (4). The inner wall of the upper tower body (1) is provided with a spray assembly (5). The filter assembly (3) includes an outlet (301), and a filter box (302) is fixedly connected to one end of the outlet (301). The inner wall of the filter box (302) is provided with an installation groove (303), and a filter screen frame (304) is slidably connected to the inner wall of the installation groove (303). An activated carbon filter screen (305) is provided on the inner wall of the filter screen frame (304), and a sealing ring (306) is provided on the inner wall of the filter screen frame (304). A hydrogen outlet (307) is fixedly connected to one side of the filter box (302). The spray assembly (5) includes a fixed frame (501), and the bottom of the fixed frame (501) is fixedly connected to an annular water pipe (502) by bolts. The outer wall of the annular water pipe (502) is fixedly connected to a threaded joint (503), and one end of the threaded joint (503) is threadedly connected to an atomizing nozzle (504). The inner wall of the upper tower body (1) is fixedly connected to a desalination water inlet (505).

2. The energy-saving device for a water washing tower in a gasoline hydrogen production workshop according to claim 1, characterized in that: The inner wall of the lower tower body (2) is provided with a mixed gas inlet (6), and the inner wall of the lower tower body (2) is fixedly connected with an inclined top (7). The inner wall of the lower tower body (2) is provided with two floating valve trays (8). The inner wall of the upper tower body (1) is provided with two fixed trays (9), and Pall ring packing (10) is provided between the two fixed trays (9). The bottom of the lower tower body (2) is fixedly connected with a washing water return port (11).

3. The energy-saving device for a water washing tower in a gasoline hydrogen production workshop according to claim 1, characterized in that: The filter box (302) forms a sliding structure with the filter frame (304) through the mounting groove (303), and the inner wall of the mounting groove (303) is in contact with the outer wall of the filter frame (304).

4. The energy-saving device for a water washing tower in a gasoline hydrogen production workshop according to claim 1, characterized in that: The top of the filter frame (304) is provided with a cover plate, and a handle is fixedly connected to the top of the cover plate.

5. The energy-saving device for a water washing tower in a gasoline hydrogen production workshop according to claim 1, characterized in that: The number of atomizing nozzles (504) is multiple, and the multiple atomizing nozzles (504) are distributed in a ring at equal intervals.

6. The energy-saving device for a water washing tower in a gasoline hydrogen production workshop according to claim 1, characterized in that: One end of the desalinated water inlet (505) extends into the upper tower body (1) and is connected to the annular water pipe (502).

7. The energy-saving device for a water washing tower in a gasoline hydrogen production workshop according to claim 2, characterized in that: The gas mixture inlet (6) is inclined downwards.

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