Purification equipment for preparing hydrogen from coke oven gas

Abstract

The utility model relates to the technical field of hydrogen purification equipment, in particular to purification equipment for preparing hydrogen from coke oven gas, which comprises a purification box and a purification mechanism mounted in the purification box and used for performing multi-stage purification on the hydrogen. According to the hydrogen purification device, dust in hydrogen can be filtered through the filter screen, the purity of the hydrogen is improved, so that primary purification of the hydrogen is achieved, water in the hydrogen can be absorbed through the activated carbon particles placed in the net cage, the purity of the hydrogen is further improved, secondary purification of the hydrogen is achieved, and the service life of the hydrogen purification device is prolonged. And moisture and macromolecules such as carbon dioxide and oxygen in hydrogen are removed through multiple times of adsorption of the multiple molecular sieve plates, and the purity of the hydrogen is further improved, so that three-time purification of the hydrogen is realized, the equipment can realize multi-stage purification of the hydrogen, the purity of the hydrogen is greatly improved, and the purification effect of the hydrogen is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen purification equipment, in particular to purification equipment for preparing hydrogen from coke oven gas. Background Art

[0002] Coke oven gas refers to the combustible gas produced as a byproduct of high-temperature dry distillation of coal in a coke oven. Generally, 300-350 standard cubic meters of coke oven gas can be produced per ton of dry coal, the main components of which are hydrogen (55-60%), methane (23-27%), and a small amount of carbon monoxide, light hydrocarbons, naphthalene, tar, carbon dioxide, hydrogen sulfide, oxygen and nitrogen. In these traditional uses of coke oven gas, hydrogen resources are treated as ordinary fuels and their value is not fully realized. If these hydrogen can be separated and purified through effective separation processes to prepare hydrogen for fuel cells, their value can be increased by 5-10 times. In summary, coke oven gas will be a raw material with great potential for large-scale production of hydrogen for fuel cells. The hydrogen produced by coke oven gas often carries some impurities such as water vapor, dust, oxygen, nitrogen and carbon dioxide. In order to improve the purity and quality of hydrogen, it needs to be dehydrated and purified.

[0003] A hydrogen recovery and purification device in a Chinese patent with application number CN202221278513.5, a body, an air inlet pipe is provided on the side wall of the body, a filtrate device is fixedly connected to the top outer wall of the body, a swing cleaning device is fixedly connected to the top inner wall of the body, an air outlet pipe is provided on the side of the body away from the air inlet pipe, and a reflux pipe is provided below the air outlet pipe. The hydrogen recovery and purification device can make the sprayer reciprocate left and right for a certain distance through the use of the swing cleaning device and the filtrate device, increase the range of the spraying water of the sprayer, make the water fully contact with the hydrogen, and improve the impurity removal effect of the hydrogen. At the same time, the cleaning brush rod can clean the impurities attached to the first curved filter plate and the second curved filter plate, prevent the filter holes of the first curved filter plate and the second curved filter plate from being blocked, reduce the cost of manual cleaning, and can repeatedly recycle the water flow at the bottom of the body.

[0004] However, the above-mentioned purification equipment only removes particulate impurities by spraying water to contact hydrogen, resulting in water in the hydrogen. At the same time, it is unable to filter large molecules in the hydrogen, thereby reducing the purification effect of the hydrogen.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of the utility model is to provide a purification device for preparing hydrogen from coke oven gas which can effectively solve the above technical problems.

[0007] In order to achieve the purpose of this utility model, the following technical solutions are adopted:

[0008] A purification device for preparing hydrogen from coke oven gas, comprising: a purification box, a purification mechanism installed inside the purification box for performing multi-stage purification of hydrogen; the purification mechanism comprises: a filter screen fixedly installed on the inner wall of the purification box, a slide groove provided on the inner wall of the purification box, a slider slidably installed in the inner cavity of the slide groove, a mesh box fixedly installed on one side of the slider, a connecting rod fixedly installed on the top of the mesh box, a placement box fixedly installed on the top of the connecting rod, and a molecular sieve plate movably installed in the inner cavity of the placement box; an air inlet opening is provided at the bottom of the placement box.

[0009] Furthermore, a connecting shaft is rotatably installed on the filter screen, a first scraper is fixedly installed on the outer side of the connecting shaft, the first scraper and the filter screen are fitted together, a second scraper is fixedly installed on the bottom end of the connecting shaft, the second scraper and the inner wall of the purification box are fitted together.

[0010] Furthermore, a driven bevel gear is fixedly sleeved on the outer edge of the linkage shaft, a rotating shaft is installed through the side wall of the purification box, an active bevel gear is fixedly installed on one end of the rotating shaft, the active bevel gear and the driven bevel gear are meshed with each other, and a motor is fixedly installed on the other end of the rotating shaft.

[0011] Furthermore, a rotating rod is rotatably installed at the bottom of the net box, a stirring rod and a fixed rod are fixedly installed on the outer edge of the rotating rod, a stirring blade is fixedly installed on the outer edge of the stirring rod, a U-shaped rod is fixedly installed on the top of the connecting shaft, and the U-shaped rod and the fixed rod are staggered.

[0012] Furthermore, a box cover is attached to the top of the purification box, fastening bolts are threadedly installed between the purification box and the box cover, and an air outlet pipe is inserted on the box cover.

[0013] Furthermore, an air inlet pipe is plugged into the side wall of the purification box, a discharge pipe is plugged into the bottom of the purification box, and support legs are fixedly installed at the bottom of the purification box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a purification device for preparing hydrogen from coke oven gas. By setting a filter screen, dust in the hydrogen can be filtered to improve the purity of the hydrogen, thereby realizing primary purification of the hydrogen. By placing activated carbon particles inside the mesh box, moisture in the hydrogen can be absorbed, further improving the purity of the hydrogen, thereby realizing secondary purification of the hydrogen. Through multiple adsorptions of multiple molecular sieve plates, moisture and macromolecules such as carbon dioxide and oxygen in the hydrogen are removed, further improving the purity of the hydrogen, thereby realizing tertiary purification of the hydrogen. Further, the device can realize multi-stage purification of the hydrogen, greatly improving the purity of the hydrogen, and enhancing the purification effect of the hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 The utility model is a three-dimensional schematic diagram of a purification device for preparing hydrogen from coke oven gas.

[0018] Figure 2 The utility model is a three-dimensional schematic diagram of a purification device for preparing hydrogen from coke oven gas.

[0019] Figure 3 The utility model is a three-dimensional schematic diagram of a purification device for preparing hydrogen from coke oven gas.

[0020] Figure 4 The utility model is a front view of a purification device for producing hydrogen from coke oven gas.

[0021] Figure 5 The utility model is a purification device for preparing hydrogen from coke oven gas Figure 4 Enlarged view of point A in the middle.

[0022] Figure 6 The utility model is a three-dimensional schematic diagram of a U-shaped rod and a fixing rod of a purification device for preparing hydrogen from coke oven gas.

[0023] In the figure: 1. purification box; 2. box cover; 3. motor; 4. active bevel gear; 5. driven bevel gear; 6. first scraper; 7. second scraper; 8. filter; 9. stirring rod; 10. stirring blade; 11. slider; 12. mesh box; 13. connecting rod; 14. placement box; 15. molecular sieve plate; 16. U-shaped rod; 17. fixing rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the utility model, rather than all embodiments.

[0025] In the description of the present utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present utility model. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] like Figures 1 to 6 As shown, the utility model is a purification device for producing hydrogen from coke oven gas, comprising: a purification box 1, a purification mechanism installed inside the purification box 1 for performing multi-stage purification of hydrogen;

[0027] The purification mechanism includes: a filter screen 8 fixedly mounted on the inner wall of the purification box 1, a chute provided on the inner wall of the purification box 1, a slider 11 slidably mounted in the inner cavity of the chute, a mesh box 12 fixedly mounted on one side of the slider 11, a connecting rod 13 fixedly mounted on the top of the mesh box 12, a placement box 14 fixedly mounted on the top of the connecting rod 13, and a molecular sieve plate 15 movably mounted in the inner cavity of the placement box 14; an air inlet opening is provided at the bottom of the placement box 14;

[0028] By setting the filter 8, dust in the hydrogen can be filtered to improve the purity of the hydrogen, thereby realizing the primary purification of the hydrogen. By placing activated carbon particles inside the mesh box 12, the activated carbon particles can absorb moisture in the hydrogen, further improving the purity of the hydrogen, thereby realizing the secondary purification of the hydrogen. At this time, the hydrogen after the secondary filtration enters the interior of the placement box 14 through the air inlet opening at the bottom of the placement box 14, and is adsorbed multiple times by multiple molecular sieve plates 15 to remove moisture and large molecules such as carbon dioxide and oxygen in the hydrogen, further improving the purity of the hydrogen, thereby realizing the tertiary purification of the hydrogen. Further, the device can realize multi-stage purification of hydrogen through the setting of the filter 8, activated carbon particles and molecular sieve plates 15, greatly improving the purity of hydrogen and enhancing the purification effect of hydrogen.

[0029] A linkage shaft is rotatably installed on the filter screen 8, a first scraper 6 is fixedly installed on the outer side of the linkage shaft, the first scraper 6 and the filter screen 8 are arranged to fit each other, a second scraper 7 is fixedly installed on the bottom end of the linkage shaft, the second scraper 7 and the inner wall of the purification box 1 are arranged to fit each other, a driven bevel gear 5 is fixedly sleeved on the outer edge of the linkage shaft, a rotating shaft is installed through the side wall of the purification box 1, an active bevel gear 4 is fixedly installed on one end of the rotating shaft, the active bevel gear 4 and the driven bevel gear 5 are arranged to mesh with each other, a motor 3 is fixedly installed on the other end of the rotating shaft, a rotating rod is rotatably installed at the bottom of the net box 12, a stirring rod 9 and a fixed rod 17 are fixedly installed on the outer edge of the rotating rod, a stirring blade 10 is fixedly installed on the outer edge of the stirring rod 9, a U-shaped rod 16 is fixedly installed on the top of the linkage shaft, and the U-shaped rod 16 and the fixed rod 17 are staggered;

[0030] By starting the motor 3, the power output shaft of the motor 3 drives the rotating shaft to rotate, the rotating shaft drives the active bevel gear 4 to rotate, the active bevel gear 4 drives the driven bevel gear 5 to rotate, the driven bevel gear 5 drives the linkage shaft to rotate, and the linkage shaft drives the first scraper 6, the second scraper 7 and the U-shaped rod 16 to rotate. The dust and impurities retained at the bottom of the filter screen 8 can be scraped off by the rotation of the first scraper 6, thereby avoiding the clogging of the filter holes of the filter screen 8 and ensuring the passing efficiency of hydrogen;

[0031] The scraped dust and impurities fall to the bottom of the inner cavity of the purification box 1. The second scraper 7 rotates to scrape the dust and impurities attached to the bottom of the inner cavity of the purification box 1, so that the dust and impurities are gathered in the discharge pipe. A valve is installed on the discharge pipe. When the hydrogen purification is completed, the dust and impurities can be discharged by opening the valve.

[0032] When the U-shaped rod 16 rotates and contacts the fixed rod 17, the fixed rod 17 can be driven to rotate together, and the fixed rod 17 can drive the rotating rod to rotate, and the rotating rod can drive a plurality of stirring rods 9 to rotate. The plurality of stirring rods 9 are distributed in a ring shape on the outer edge of the rotating rod, and the plurality of stirring blades 10 are driven to rotate by the plurality of stirring rods 9. The activated carbon particles in the mesh box 12 can be stirred horizontally and vertically by the plurality of stirring rods 9 and the plurality of stirring blades 10, so that the hydrogen and the activated carbon particles are fully in contact, thereby fully absorbing the moisture in the hydrogen, thereby improving the adsorption efficiency and adsorption effect of the moisture in the hydrogen.

[0033] A box cover 2 is attached to the top of the purification box 1, and fastening bolts are threadedly installed between the purification box 1 and the box cover 2, and an air outlet pipe is plugged into the box cover 2;

[0034] When the hydrogen purification is completed, the box cover 2 can be removed from the top of the purification box 1 by removing several fastening bolts. At this time, the placement box 14 is pulled out, and the connecting rod 13 is driven to move upward by the placement box 14, and the mesh box 12 is driven to move upward by the connecting rod 13, and the rotating rod is driven upward by the mesh box 12, and then the stirring rod 9, the stirring blades 10, and the stirring rod 9 can be driven to move to the outside of the purification box 1, so that the activated carbon particles and the molecular sieve plate 15 can be replaced conveniently, thereby ensuring the purification effect and efficiency of the hydrogen and improving the practicability of the equipment.

[0035] An air inlet pipe is plugged into the side wall of the purification box 1, a discharge pipe is plugged into the bottom of the purification box 1, and a support leg is fixedly installed at the bottom of the purification box 1;

[0036] Hydrogen is transported to the inner cavity of the purification box 1 through the air inlet pipe, and the hydrogen after multi-stage filtration is discharged through the air outlet pipe. The support legs can support the purification box 1.

[0037] Working principle: When in use, hydrogen is transported to the inner cavity of the purification box 1 through the air inlet pipe. By setting the filter mesh 8, dust in the hydrogen can be filtered to improve the purity of the hydrogen, thereby realizing the primary purification of the hydrogen. By placing activated carbon particles inside the mesh box 12, the activated carbon particles can absorb moisture in the hydrogen, further improving the purity of the hydrogen, thereby realizing the secondary purification of the hydrogen. At this time, the hydrogen after the secondary filtration enters the interior of the placement box 14 through the air inlet opening at the bottom of the placement box 14, and is adsorbed multiple times by multiple molecular sieve plates 15 to remove moisture and large molecules such as carbon dioxide and oxygen in the hydrogen, further improving the purity of the hydrogen, thereby realizing the tertiary purification of the hydrogen. The hydrogen after multi-stage filtration is discharged through the outlet pipe.

[0038] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0039] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A purification device for producing hydrogen from coke oven gas, characterized in that: include: A purification box, and a purification mechanism installed inside the purification box for performing multi-stage purification of hydrogen; The purification mechanism includes: a filter screen fixedly installed on the inner wall of the purification box, a slide groove opened on the inner wall of the purification box, a slider slidably installed in the inner cavity of the slide groove, a mesh box fixedly installed on one side of the slider, a connecting rod fixedly installed on the top of the mesh box, a placement box fixedly installed on the top of the connecting rod, and a molecular sieve plate movably installed in the inner cavity of the placement box; an air inlet opening is opened at the bottom of the placement box.

2. A purification device for producing hydrogen from coke oven gas as claimed in claim 1, characterized in that: A linkage shaft is rotatably mounted on the filter screen, a first scraper is fixedly mounted on the outer side of the linkage shaft, the first scraper and the filter screen are fitted together, a second scraper is fixedly mounted on the bottom end of the linkage shaft, the second scraper and the inner wall of the purification box are fitted together.

3. A purification device for producing hydrogen from coke oven gas as claimed in claim 2, characterized in that: A driven bevel gear is fixedly sleeved on the outer edge of the linkage shaft, a rotating shaft is installed through the side wall of the purification box, an active bevel gear is fixedly installed on one end of the rotating shaft, the active bevel gear and the driven bevel gear are meshed with each other, and a motor is fixedly installed on the other end of the rotating shaft.

4. A purification device for producing hydrogen from coke oven gas as claimed in claim 2, characterized in that: A rotating rod is rotatably installed at the bottom of the net box, a stirring rod and a fixed rod are fixedly installed at the outer edge of the rotating rod, a stirring blade is fixedly installed at the outer edge of the stirring rod, a U-shaped rod is fixedly installed at the top of the linkage shaft, and the U-shaped rod and the fixed rod are staggered.

5. A purification device for producing hydrogen from coke oven gas as claimed in claim 1, characterized in that: A box cover is attached to the top of the purification box, and fastening bolts are threadedly installed between the purification box and the box cover, and an air outlet pipe is inserted on the box cover.

6. A purification device for producing hydrogen from coke oven gas as claimed in claim 1, characterized in that: An air inlet pipe is inserted into the side wall of the purification box, a discharge pipe is inserted into the bottom of the purification box, and support legs are fixedly installed at the bottom of the purification box.

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