Device for purifying hydrogen through pressure swing adsorption

Abstract

The utility model discloses a device for purifying hydrogen through pressure swing adsorption, which belongs to the field of hydrogen purification and comprises a vertical frame, two mounting frames are fixedly connected onto the vertical frame, the mounting frames are arranged up and down, a purification mechanism is arranged on the mounting frames and comprises an upper shell and a lower shell, the upper shell is fixedly connected into the mounting frame on the upper side, and the lower shell is fixedly connected into the mounting frame on the lower side. The lower shell is rotationally connected into the mounting frame on the lower side, and a side shell is arranged between the upper shell and the lower shell. The gas purification device has the beneficial effects that the purification mechanism and the rotating mechanism are arranged, the purification tank is composed of the upper shell, the side shell and the lower shell, and an adsorbent flows in the side shell through a rotating hollow column and a spiral plate, so that the adsorbent is more uniformly in contact with gas, and the gas adsorption effect is improved; and the spiral plate is arranged, so that the flowing length of the gas in the side shell is increased, the purification effect is improved, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen purification field especially, is hydrogen's device of pressure swing adsorption purification. BACKGROUND

[0002] Hydrogen purification is the application of pressure swing adsorption separation technology in hydrogen purification device, and the preparation of hydrogen contains CO, CO2 and other impurity gases, resulting in low purity of prepared hydrogen. Pressure swing adsorption is a technology for gas adsorption separation by changing pressure, which uses mature and advanced pressure swing adsorption hydrogen purification technology to produce hydrogen products with a purity of up to 99% by using refinery gas byproducts, realizing comprehensive utilization of resources, reducing pollution and increasing economic benefits for enterprises.

[0003] After searching the Chinese patent announcement No. CN221999380U, a device for purifying hydrogen by pressure swing adsorption is disclosed. The patent includes an adsorption tower and a conveying pipe connected thereto, including a multi-directional adsorbent containing mechanism installed inside the adsorption tower, which includes a pair of horizontal containing tower plates filled with adsorbent and a vertical containing mechanism between the two horizontal containing tower plates, forming an adsorption surface in the horizontal and vertical directions respectively. The device can remove impurities in the gas during hydrogen production by pressure swing adsorption through the adsorption tower, conveying pipe and adsorbent multi-directional containing mechanism installed in the adsorption tower to achieve the purpose of purifying hydrogen. Moreover, by designing the horizontal and vertical containing tower plates, the adsorption surface can be provided in the horizontal and vertical directions, increasing the contact area of gas and adsorbent in a limited space, thereby improving the adsorption effect. However, the existing adsorption and purification hydrogen device has different degrees of adsorption effect decay of the adsorbent at different places due to the flow of hydrogen from one end to the other, affecting the overall adsorption effect, and the contact time of gas with the adsorbent in the tank is not long, which also affects the purification effect, and the practicality needs to be improved. UTILITY MODEL CONTENT

[0004] The purpose of the utility model is to provide a device for purifying hydrogen by pressure swing adsorption to solve the above problems.

[0005] The utility model achieves the above-mentioned purposes through the following technical solutions:

[0006] The utility model provides a kind of device for purifying hydrogen by pressure swing adsorption, including stand, two mounting racks are fixedly connected on stand, mounting rack is arranged upside and downside, and purifying mechanism is provided on mounting rack, and purifying mechanism includes upper shell and lower shell, upper shell is fixedly connected in the mounting rack on upside, lower shell is rotatably connected in the mounting rack on downside, side shell is provided between upper shell and lower shell, side shell is fixedly connected with upper shell, side shell is rotatably connected with lower shell, rotating mechanism is provided in lower shell, and rotating mechanism includes fixed block, a plurality of connecting plates are fixedly connected on the side surface of fixed block, the end of connecting plate away from fixed block is fixedly connected in the inner side of lower shell, conveying structure is provided on fixed block, and conveying structure is used to make adsorbent flow in side shell, and power mechanism for making lower shell rotate is provided on stand.

[0007] Preferably, the conveying structure includes a hollow column fixedly connected to the top of the fixed block, a spiral plate fixedly connected to the side surface of the hollow column, and a plurality of through holes formed in the bottom of the hollow column.

[0008] Preferably, the power mechanism includes an electric motor fixedly connected to the side surface of the stand, a belt pulley fixedly connected to the output end of the electric motor, two limiting rings fixedly connected to the side surface of the side shell, and a transmission belt sleeved on the belt pulley and the lower shell, the transmission belt being arranged between the two limiting rings.

[0009] Preferably, the top of the upper shell is fixedly connected to an air inlet pipe, and the bottom of the lower shell is fixedly connected to an air outlet pipe.

[0010] Preferably, a horizontal containing plate is fixedly connected to the inner wall of the upper shell and the lower shell, and a plurality of air holes smaller than the diameter of the adsorbent are arranged on the horizontal containing plate.

[0011] Preferably, a dispersion plate is fixedly connected to the inner side of the lower shell, a plurality of dispersion holes are formed in the dispersion plate, the dispersion plate has a convex shell shape, and the dispersion holes are uniformly distributed on the dispersion plate.

[0012] The beneficial effects are that the purifying mechanism and the rotating mechanism are provided, the purifying tank is formed by the upper shell, the side shell and the lower shell, the adsorbent flows in the side shell by the rotating hollow column and the spiral plate, the adsorbent is more uniformly contacted with the gas, the effect of adsorbing the gas is improved, the length of the gas flowing in the side shell is increased by the spiral plate, the purifying effect is improved, and the practicality is strong.

[0013] The additional technical features and advantages of the utility model will be more obvious in the following description, or can be understood through the specific practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the following specific embodiments to explain the utility model, but do not constitute the limitation to the utility model. In the drawings:

[0015] Figure 1 is a schematic view of the device for purifying hydrogen by pressure swing adsorption of the utility model;

[0016] Figure 2 is a sectional view of the device for purifying hydrogen by pressure swing adsorption of the utility model;

[0017] Figure 3 is the internal structure schematic diagram of the purification mechanism of the device for purifying hydrogen by pressure swing adsorption of the utility model;

[0018] Figure 4 is the structure schematic diagram of the rotating mechanism of the device for purifying hydrogen by pressure swing adsorption of the utility model;

[0019] Figure 5 is the power mechanism and lower shell connection schematic diagram of the device for purifying hydrogen by pressure swing adsorption of the utility model;

[0020] Figure 6 is the structure schematic diagram of the dispersion plate of the device for purifying hydrogen by pressure swing adsorption of the utility model.

[0021] The reference signs are explained as follows: 101, stand; 102, mounting frame; 103, bottom plate; 201, upper shell; 202, side shell; 203, lower shell; 204, air inlet pipe; 205, air outlet pipe; 206, horizontal containing plate; 207, dispersion plate; 208, dispersion hole; 301, fixed block; 302, connecting plate; 303, hollow column; 304, spiral plate; 305, through hole; 401, motor; 402, pulley; 403, transmission belt; 404, limiting ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0024] The utility model will be further described below with reference to the drawings:

[0025] As Figure 1 — Figure 6As shown, a device for purifying hydrogen by pressure swing adsorption includes a stand 101, two mounting racks 102 are connected on the stand 101 by bolts, the mounting racks 102 are arranged up and down, a bottom plate 103 is fixedly connected to the bottom of the stand 101, a purification device is arranged on the mounting rack 102, the purification device includes an upper shell 201 and a lower shell 203, the upper shell 201 is connected in the upper mounting rack 102 by bolts, the lower shell 203 is rotatably connected in the lower mounting rack 102, a side shell 202 is arranged between the upper shell 201 and the lower shell 203, the upper shell 201, the side shell 202 and the lower shell 203 jointly form a purification tank, the gas is purified from bottom to top in the tank, the side shell 202 is connected with the upper shell 201 by bolts, the side shell 202 is rotatably connected with the lower shell 203, a rotating device is arranged in the lower shell 203, the rotating device includes a fixed block 301, a plurality of connecting plates 302 are connected to the side of the fixed block 301 by bolts, the ends of the connecting plates 302 away from the fixed block 301 are connected to the inner side of the lower shell 203 by bolts, a conveying structure is arranged on the fixed block 301, the conveying structure is used for flowing the adsorbent in the side shell 202, the stand 101 is provided with a power for rotating the lower shell 203.

[0026] In this embodiment, the conveying structure includes a hollow column 303, the hollow column 303 is welded on the top of the fixed block 301, a spiral plate 304 is welded on the side of the hollow column 303, the spiral plate 304 is arranged to increase the length of the gas flowing in the side shell 202, increase the contact time with the adsorbent, improve the purification effect, a plurality of through holes 305 are arranged at the bottom of the hollow column 303, the adsorbent can fall from the hollow column 303 to the lower side when the adsorbent is transported to the top by the spiral plate 304, and return to the space between the side shell 202 and the hollow column 303.

[0027] In this embodiment, the power includes an electric motor 401, the electric motor 401 is connected to the side of the stand 101 by bolts, a belt pulley 402 is connected to the output end of the electric motor 401 by bolts, two limiting rings 404 are connected to the side of the side shell 202 by bolts, the belt pulley 402 and the lower shell 203 are sleeved with a transmission belt 403, the transmission belt 403 is arranged between the two limiting rings 404, when the electric motor 401 is started, the electric motor 401 drives the belt pulley 402 to rotate, the belt pulley 402 drives the limiting ring 404 and the lower shell 203 to rotate through the transmission belt 403, the lower shell 203 drives the fixed block 301 to rotate through the connecting plate 302, the fixed block 301 drives the hollow column 303 and the spiral plate 304 to rotate, so that the adsorbent in the side shell 202 continuously flows.

[0028] In this embodiment, the upper shell 201 top is bolted with the air inlet pipe 204, the lower shell 203 bottom is bolted with the air outlet pipe 205, the air outlet pipe 205 is connected with the external gas supply device, the gas is transported at the same time, the air pressure in the upper shell 201, the side shell 202 and the lower shell 203 is changed, the adsorption is carried out, since it is prior art, here is not redundant.

[0029] In this embodiment, the inner wall of the upper shell 201 and the lower shell 203 is bolted with the horizontal containing plate 206, the horizontal containing plate 206 is provided with the air hole smaller than the diameter of the adsorbent, when the gas is purified, the adsorbent is between the horizontal containing plate 206, the impurities in the hydrogen are adsorbed and purified when the gas passes through.

[0030] In this embodiment, the inside of the lower shell 203 is bolted with the dispersion plate 207, the dispersion plate 207 is provided with a plurality of dispersion holes 208, the dispersion plate 207 is the upper convex shell shape, the dispersion holes 208 are uniformly distributed on the dispersion plate 207, the dispersion plate 207 and the dispersion hole 208 are arranged so that the gas to be purified is dispersed when passing through the lower shell 203 and uniformly rises into the side shell 202.

[0031] Working principle: when the device is used, the adsorbent is filled between the upper shell 201, the side shell 202 and the lower shell 203, and the device is assembled and installed, the adsorbent is between the horizontal containing plate 206, the impurities in the hydrogen are adsorbed and purified when the gas passes through, the gas to be purified is introduced into the lower shell 203 through the air inlet pipe 204, and the motor 401 is started, the motor 401 drives the belt pulley 402 to rotate, the belt pulley 402 drives the limiting ring 404 and the lower shell 203 to rotate through the transmission belt 403, the lower shell 203 drives the fixed block 301 to rotate through the connecting plate 302, the fixed block 301 drives the hollow column 303 and the spiral plate 304 to rotate, the spiral plate 304 rotates to transport the adsorbent in the side shell 202 upward, the adsorbent moves to the top of the side shell 202 and enters the hollow column 303 to fall to the bottom end, in this way, the adsorbent in the side shell 202 continuously flows, after the gas is introduced into the lower shell 203, it first passes through the dispersion holes 208 on the dispersion plate 207, so that the gas to be purified is dispersed when passing through the lower shell 203 and uniformly rises into the side shell 202, when the gas flows in the side shell 202, it passes through the gap between the spiral plate 304 and the side shell 202, in this way, the contact time of the gas with the adsorbent in the side shell 202 is increased, the purification effect is improved, after the gas passes through the side shell 202, it is discharged from the air outlet pipe 205 at the top of the upper shell 201 and enters the next step.

[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for purifying hydrogen by pressure swing adsorption, comprising a stand (101), wherein two mounting brackets (102) are fixedly connected to the stand (101), the mounting brackets (102) are arranged vertically, and a purification mechanism is provided on the mounting brackets (102), characterized in that: The purification mechanism includes an upper shell (201) and a lower shell (203), the upper shell (201) is fixedly connected in the mounting frame (102) on the upper side, the lower shell (203) is rotatably connected in the mounting frame (102) on the lower side, a side shell (202) is arranged between the upper shell (201) and the lower shell (203), the side shell (202) is fixedly connected with the upper shell (201), the side shell (202) is rotatably connected with the lower shell (203), a rotating mechanism is arranged in the lower shell (203), the rotating mechanism includes a fixed block (301), a plurality of connecting plates (302) are fixedly connected on the side of the fixed block (301), one end of the connecting plate (302) away from the fixed block (301) is fixedly connected to the inner side of the lower shell (203), a conveying structure is arranged on the fixed block (301), the conveying structure is used for flowing the adsorbent in the side shell (202), a power mechanism for rotating the lower shell (203) is arranged on the stand (101).

2. A device for pressure swing adsorption purification of hydrogen according to claim 1, characterized in that: The conveying structure includes a hollow column (303), the hollow column (303) is fixedly connected to the top of the fixed block (301), a spiral plate (304) is fixedly connected to the side of the hollow column (303), a plurality of through holes (305) are formed in the bottom of the hollow column (303).

3. A device for pressure swing adsorption purification of hydrogen according to claim 1, characterized in that: The power mechanism includes a motor (401), the motor (401) is fixedly connected to the side of the stand (101), a belt pulley (402) is fixedly connected to the output end of the motor (401), two limiting rings (404) are fixedly connected to the side of the side shell (202), a transmission belt (403) is sleeved on the lower shell (203) and the belt pulley (402), and the transmission belt (403) is arranged between the two limiting rings (404).

4. A device for pressure swing adsorption purification of hydrogen according to claim 1, characterized in that: The upper shell (201) is fixedly connected with an air inlet pipe (204) on the top, and the lower shell (203) is fixedly connected with an air outlet pipe (205) on the bottom.

5. A device for pressure swing adsorption purification of hydrogen according to claim 1, characterized in that: The inner walls of the upper shell (201) and the lower shell (203) are fixedly connected with a horizontal containing plate (206), and the horizontal containing plate (206) is provided with a ventilation hole smaller than the diameter of the adsorbent.

6. A device for pressure swing adsorption purification of hydrogen according to claim 1, characterized in that: The inner side of the lower shell (203) is fixedly connected with a dispersion plate (207), a plurality of dispersion holes (208) are formed in the dispersion plate (207), the dispersion plate (207) is a convex shell, and the dispersion holes (208) are uniformly distributed on the dispersion plate (207).

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