Pressure swing adsorption mechanism for hydrogen purification

Abstract

The pressure swing adsorption mechanism comprises an adsorption tower with a built-in pressure controller, a gas inlet, a gas outlet and adsorption boxes, the adsorption boxes are arranged in the adsorption tower at equal intervals, a filter screen is arranged on the outer side of the gas outlet in a sleeving mode, the upper end of the filter screen is fixedly connected with a connecting plate, and the upper end of the filter screen is fixedly connected with the connecting plate. Meanwhile, the connecting plate is inserted into a fixing plate fixed at the right upper end of the adsorption tower, and the fixing mechanism, the connecting plate and the fixing plate drive the filter screen to form a detachable structure on the outer side of the air outlet. According to the pressure swing adsorption mechanism for hydrogen purification, multiple groups of adsorption boxes are arranged in the adsorption tower, an adsorbent is laid in each adsorption box, the adsorption boxes can make full contact with gas, the more sufficient adsorption effect is achieved, a filter screen is arranged at a gas outlet, fine impurities contained in hydrogen can be treated, and the purification efficiency is improved. And in combination with the arrangement of a fixing mechanism, the filter screen is convenient to disassemble, clean and replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen purification related technical field, specifically for a kind of for hydrogen purification pressure swing adsorption mechanism. BACKGROUND

[0002] Hydrogen is two-atom molecule by two hydrogen atoms through covalent bond, hydrogen is colorless, odorless, nontoxic and difficultly soluble in water gas at normal temperature and pressure, when purifying hydrogen in hydrogen-rich industrial tail gas, due to the different adsorption capacity of hydrogen and impurity gas, and the adsorption capacity of impurity gas on adsorbent increases with the increase of partial pressure, the purification collection of hydrogen is usually carried out by pressure swing adsorption method;

[0003] For example, the publication number CN218166469U discloses a kind of pressure swing recovery hydrogen adsorption tower, including the shell being set on base, the cavity is opened in the shell, the side wall of the cavity is provided with a plurality of adsorption boxes, the side wall of the shell is provided with a plurality of sliding outlets corresponding with adsorption box, the side of the adsorption box is fixedly provided with pressure rod, the end of the pressure rod away from adsorption box is fixedly provided with cover plate corresponding with sliding outlet.The utility model can quickly eject the adsorption box in the adsorption tower, facilitate to replace adsorbent, avoid the problem that adsorption effect of adsorbent appears to decline due to long-term use, so as to ensure hydrogen recovery effect;

[0004] However, in the prior art, the contact area of the adsorbent with the gas is limited, the adsorption effect needs to be improved, and no filter assembly is provided at the exhaust port, which is not convenient for filtering the impurities contained in the hydrogen, affecting the purity of hydrogen, for example, the above-mentioned comparative patent has this problem;

[0005] Therefore, we propose a kind of pressure swing adsorption mechanism for hydrogen purification to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of pressure swing adsorption mechanism for hydrogen purification to solve the problem that the contact area of the adsorbent with the gas is limited in the above background art, the adsorption effect needs to be improved, and no filter assembly is provided at the exhaust port, which is not convenient for filtering the impurities contained in the hydrogen, affecting the purity of hydrogen.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of pressure swing adsorption mechanism for hydrogen purification, including the adsorption tower of built-in pressure controller, gas inlet, gas outlet and adsorption box;

[0008] Further comprising:

[0009] The adsorption box is arranged at equal intervals in the adsorption tower;

[0010] A filter screen is sleeved outside the gas outlet, and an upper end of the filter screen is fixedly connected with a connecting plate, which is inserted into a fixed plate fixed to a right upper end of the adsorption tower.

[0011] The connecting plate and the fixed plate are limited by a fixing mechanism, and the fixing mechanism drives the filter screen to form a dismounting structure outside the gas outlet together with the connecting plate and the fixed plate.

[0012] Preferably, a left lower end of the adsorption tower is provided with the gas inlet, and a right upper end of the adsorption tower is provided with the gas outlet.

[0013] Preferably, the adsorption box is inserted into the adsorption tower, and a bottom of the adsorption box is in a mesh structure, and the adsorption box is paved with the adsorbent.

[0014] Preferably, a front side of the adsorption box is fixedly connected with a front side plate, and the front side plate is provided with a sealing gasket in abutment with a front side of the adsorption tower, and left and right sides of an upper end of the front side plate are fixedly connected with auxiliary blocks.

[0015] Preferably, the auxiliary blocks are fixed between the adsorption tower through fixing pins arranged in the middle of the auxiliary blocks.

[0016] Preferably, the fixing mechanism is composed of a movable stopper for limiting, limiting blocks fixed at left and right ends of the movable stopper, a vertical rod fixedly connected with an upper end of the movable stopper, and a spring sleeved outside an outer surface of the vertical rod.

[0017] Preferably, a right lower end of the movable stopper is matched with a left upper end of the connecting plate, and a left side of the movable stopper is in abutment with the connecting plate, and the movable stopper forms an elastic structure in the fixed plate.

[0018] Meanwhile, the upper end of the connecting plate is in abutment with an inner wall of the fixed plate.

[0019] Preferably, the vertical rod and the fixed plate form an up-down sliding structure, and the limiting blocks are slidingly connected with front and rear ends of the fixed plate.

[0020] Compared with the prior art, the hydrogen purification pressure swing adsorption mechanism has the advantages that: the adsorption box is provided with multiple groups in the adsorption tower, and the adsorption box is paved with the adsorbent, so that the adsorption effect is more sufficient, the filter screen is arranged at the gas outlet, so that the fine impurities contained in the hydrogen can be treated, the purity of the hydrogen is improved, and the filter screen can be dismounted, cleaned and replaced conveniently by means of the fixing mechanism.

[0021] 1. It is provided with an adsorption box and a front side plate, the adsorption box is fixed at the rear end of the front side plate, and the adsorption box is inserted in the adsorption tower, the bottom of the adsorption box is in a net structure, and the adsorption boxes are arranged at equal intervals in the adsorption tower, the adsorbent is laid in the adsorption box, so that the adsorbent is in full contact with the gas, and a more sufficient adsorption effect is achieved.

[0022] 2. It is provided with a filter screen and a gas outlet, the filter screen is sleeved outside the gas outlet, and can filter the fine impurities in the discharged hydrogen, so as to improve the purity of the prepared hydrogen.

[0023] 3. It is provided with a fixing mechanism, the fixing mechanism comprises a movable stop block, a limiting block and a vertical rod, through the arrangement of the fixing mechanism, the limiting between the connecting plate and the fixed plate is facilitated, so that the filter screen is facilitated to be disassembled, cleaned and replaced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole structure schematic view of the utility model;

[0025] Figure 2 It is a front view cut structure schematic view of the utility model;

[0026] Figure 3 It is a structure schematic view of the utility model adsorption box and adsorption tower disassembly state;

[0027] Figure 4 It is a structure schematic view of the utility model Figure 3 enlarged structure schematic view of A place in the utility model;

[0028] Figure 5 It is an explosion structure schematic view of the utility model gas outlet, filter screen and connecting plate;

[0029] Figure 6 It is a connecting plate and movable stop block structure schematic view of the utility model.

[0030] In the drawing: 1, adsorption tower; 2, gas inlet; 3, gas outlet; 4, adsorption box; 5, front side plate; 6, auxiliary block; 7, fixing bolt; 8, filter screen; 9, connecting plate; 10, fixed plate; 11, movable stop block; 12, limiting block; 13, vertical rod; 14, spring; 15, fixed ring. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0032] Please refer to Figures 1-6 .

[0033] In order to solve the problem that the contact area between the adsorbent and the gas is limited in the prior art, the adsorption effect needs to be improved, and no filter assembly is arranged at the exhaust port, which is not convenient for filtering the impurities contained in the hydrogen gas, affecting the purity of the hydrogen gas, therefore, the technical scheme is adopted, a pressure swing adsorption mechanism for hydrogen purification is provided with an adsorption tower 1 with a built-in pressure controller, an air inlet 2, an air outlet 3 and an adsorption box 4, the adsorption boxes 4 are arranged at equal intervals in the adsorption tower 1, a filter screen 8 is sleeved outside the air outlet 3, and the upper end of the filter screen 8 is fixedly connected with a connecting plate 9, the connecting plate 9 is inserted into a fixed plate 10 fixed to the right upper end of the adsorption tower 1, and the connecting plate 9 and the fixed plate 10 are limited by a fixing mechanism, the fixing mechanism drives the filter screen 8 outside the air outlet 3 to form a dismounting structure together with the connecting plate 9 and the fixed plate 10;

[0034] As Figure 1 , Figure 2 and Figure 3 shown, the pressure regulator arranged at the top of the adsorption tower 1 can adjust the air pressure inside the adsorption tower 1, the pressure regulator is a mature existing technology, and no further description is made, the lower left end of the adsorption tower 1 is provided with an air inlet 2, the gas to be purified is introduced into the adsorption tower 1 through the air inlet 2, the adsorption boxes 4 are arranged at equal intervals in the adsorption tower 1, the bottom of the adsorption box 4 is in a mesh structure, and the adsorption box 4 is paved with an adsorbent, the gas is in full contact with the adsorbent in the adsorption box 4, so that the impurities are adsorbed on the adsorbent, and the purified hydrogen gas is discharged outward through the air outlet 3 at the right upper end of the adsorption tower 1 and collected, and when the adsorbent in the adsorption box 4 needs to be replaced, the fixing bolt 7 is only turned to loosen the limiting between the auxiliary block 6 and the adsorption tower 1, then the front side plate 5 is pulled to the front side, and the front side plate 5 drives the adsorption box 4 to move out of the inside of the adsorption tower 1, so that the adsorbent inside the adsorption box 4 is replaced;

[0035] In addition, when the hydrogen gas is discharged outward through the air outlet 3, the filter screen 8 sleeved outside the air outlet 3 further filters the fine impurities in the hydrogen gas, further improving the purity of the hydrogen gas, when the filter screen 8 needs to be dismounted, cleaned and replaced, as Figure 4 , Figure 5 and Figure 6As shown, the upper end of the filter screen 8 is fixedly connected with the connecting plate 9, the connecting plate 9 is inserted in the fixed plate 10, meanwhile, the connecting plate 9 and the adsorption tower 1 and the inner side of the fixed plate 10 are all attached, the connecting plate 9 and the fixed plate 10 are limited by the fixing mechanism, the fixing mechanism is composed of the movable stopper 11 for limiting, the limiting block 12 fixed at the front and back two ends of the movable stopper 11, the vertical rod 13 fixedly connected with the upper end of the movable stopper 11 and the spring 14 sleeved on the outer surface of the vertical rod 13, by pulling the fixing ring 15 fixed on the upper end of the vertical rod 13 upward, the fixing ring 15 drives the vertical rod 13 and the fixed plate 10 to slide, the vertical rod 13 drives the movable stopper 11 to move upward to extrude the spring 14, so that the spring 14 is elastically deformed, the movable stopper 11 drives the limiting block 12 to slide with the fixed plate 10, the stability of the movable stopper 11 in the moving process is improved, the movable stopper 11 moves upward and is separated from the connecting plate 9, and then the limiting of the connecting plate 9 is released, then the connecting plate 9 is pulled to the right, the connecting plate 9 drives the filter screen 8 to be separated from the gas outlet 3, and then the filter screen 8 is convenient to disassemble, clean and replace.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be subject to many changes, modifications, substitutions and variations in the shape, size and arrangement of parts, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pressure swing adsorption mechanism for hydrogen purification, comprising an adsorption tower (1) with a built-in pressure controller, a gas inlet (2), a gas outlet (3) and an adsorption box (4); characterized in that Further comprising: The adsorption box (4) is arranged at equal intervals in the adsorption tower (1); A filter screen (8) is sleeved on the outside of the gas outlet (3), and the upper end of the filter screen (8) is fixedly connected with a connecting plate (9), and the connecting plate (9) is inserted into a fixed plate (10) fixed to the right upper end of the adsorption tower (1); Wherein, the connecting plate (9) and the fixed plate (10) are limited by the fixing mechanism, and the fixing mechanism drives the filter screen (8) on the outside of the gas outlet (3) to form a disassembly structure.

2. A pressure swing adsorption mechanism for hydrogen purification according to claim 1, characterized in that: The left lower end of the adsorption tower (1) is provided with the gas inlet (2), and the right upper end of the adsorption tower (1) is provided with the gas outlet (3).

3. The pressure swing adsorption mechanism for hydrogen purification according to claim 1, characterized in that: The adsorption box (4) is inserted into the adsorption tower (1), and the bottom of the adsorption box (4) is in a mesh structure, and the adsorption box (4) is paved with an adsorbent.

4. A pressure swing adsorption mechanism for hydrogen purification according to claim 3, characterized in that: The front side of the adsorption box (4) is fixedly connected with a front side plate (5), and the front side plate (5) is provided with a sealing gasket in abutment with the front side of the adsorption tower (1), and the left and right sides of the upper end of the front side plate (5) are fixedly connected with auxiliary blocks (6).

5. A pressure swing adsorption mechanism for hydrogen purification according to claim 4, characterized in that: The auxiliary blocks (6) and the adsorption tower (1) are fixed by the fixed pins (7) penetrating through the middle of the auxiliary blocks (6).

6. The pressure swing adsorption mechanism for hydrogen purification according to claim 1, characterized in that: The fixing mechanism is composed of a movable stop block (11) for limiting, limiting blocks (12) fixed at the front and rear ends of the movable stop block (11), a vertical rod (13) fixedly connected to the upper end of the movable stop block (11), and a spring (14) sleeved on the outer surface of the vertical rod (13).

7. A pressure swing adsorption mechanism for hydrogen purification according to claim 6, characterized in that: The right lower end of the movable stop block (11) is matched with the left upper end of the connecting plate (9), and the left side of the movable stop block (11) is arranged in abutment with the connecting plate (9), and the movable stop block (11) forms an elastic structure in the fixed plate (10); At the same time, the upper end of the connecting plate (9) is arranged in abutment with the inner wall of the fixed plate (10).

8. A pressure swing adsorption mechanism for hydrogen purification as claimed in claim 6 wherein: The vertical rod (13) and the fixed plate (10) form an up-down sliding structure, and the front and rear ends of the fixed plate (10) are slidingly connected with the limiting blocks (12).

Images