Waste gas recovery device of hydrogen production machine

Abstract

The waste gas recovery device comprises a tank body, a liquid supplementing pipe is fixed at the top end of the side wall of the tank body, a liquid discharging pipe is fixedly connected to the bottom of the tank body, a vertical pipe penetrates through the top wall of the tank body and is rotationally connected with the top wall of the tank body, a transverse pipe is fixedly connected to the bottom end of the vertical pipe, and a plurality of exhaust holes are formed in the surface of the transverse pipe. An air inlet pipe communicated with the vertical pipe is fixed on the upper surface of the tank body, and a motor for driving the vertical pipe to rotate is mounted on the upper surface of the tank body. According to the waste gas treatment device, the tank body, the liquid supplementing pipe, the liquid discharging pipe, the vertical pipe, the transverse pipe, the gas inlet pipe and the motor are arranged, after waste gas enters the tank body from the gas inlet pipe, ammonia gas in the waste gas is absorbed through absorption liquid in the tank body, and in the process, the motor drives the vertical pipe and the transverse pipe to rotate, so that the waste gas can be sprayed out from multiple angles after entering the tank body; the contact area of waste gas and absorption liquid is increased, so that the absorption effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen generators, in particular to an exhaust gas recovery device for a hydrogen generator. Background Art

[0002] A hydrogen generator is a device that uses the advanced PSA pressure swing adsorption principle. Through the difference in the adsorption capacity of adsorbents in the adsorption tower for different gases under a certain pressure, high-purity hydrogen is separated from the ammonia decomposition mixed gas. However, an exhaust gas recovery device is usually set at the desorption port of the hydrogen generator to recover the residual ammonia.

[0003] The patent with the publication number CN212017277U discloses an exhaust gas recovery device for a pressure swing adsorption hydrogen generator. It cools the exhaust gas to minus 30° with liquid nitrogen, liquefies ammonia into liquid, and then introduces the residual ammonia into water to form ammonia water to achieve the recovery of ammonia in the exhaust gas. However, the cost of cooling ammonia with liquid is too high, and it is not suitable for large-scale recycling. Therefore, in view of the above disadvantages, the utility model proposes an exhaust gas recovery device for a hydrogen generator. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose an exhaust gas recovery device for a hydrogen generator.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: An exhaust gas recovery device for a hydrogen generator includes a tank body. A liquid replenishing pipe is fixed to the top end of the side wall of the tank body, and a liquid discharge pipe is fixedly connected to the bottom of the tank body. A vertical pipe penetrates and is rotatably connected to the top wall of the tank body. The bottom end of the vertical pipe is fixedly connected to a horizontal pipe, and a plurality of exhaust holes are formed on the surface of the horizontal pipe. An air inlet pipe communicated with the vertical pipe is fixed to the upper surface of the tank body. A motor for driving the vertical pipe to rotate is installed on the upper surface of the tank body. An exhaust pipe is fixedly connected to the top wall of the tank body, and the other end of the exhaust pipe is fixedly connected to a secondary recovery component.

[0006] Further, valves are fixedly connected to the middle parts of the liquid replenishing pipe and the liquid discharge pipe.

[0007] Further, a pipe sleeve is fixedly connected to one end of the air inlet pipe close to the vertical pipe. The top end of the vertical pipe is hermetically and rotatably connected to the pipe sleeve. A driven gear is fixedly connected to the surface of the top end of the vertical pipe. A driving gear is fixedly connected to the driving end of the motor, and the driving gear meshes with the driven gear.

[0008] Further, a plurality of partition plates are fixedly arranged at equal intervals from bottom to top inside the tank body. A strip-shaped opening for passing through the vertical pipe is formed in the middle of the partition plates, and the plurality of partition plates are arranged in a staggered manner.

[0009] Further, the secondary recovery component includes a box body fixedly connected to the exhaust pipe, and the bottom end of the box body is designed with an open mouth. A bottom cover is sleeved on the bottom surface of the box body. The side wall of the bottom cover penetrates and is threadedly connected with a locking bolt. A plurality of activated carbon plates are stacked on the surface of the bottom cover, and an air outlet pipe is fixedly connected to the middle of the bottom cover.

[0010] Further, a sealing ring is fixedly connected to the bottom end of the side wall of the box body.

[0011] Advantages of the present utility model:

[0012] 1. When the present utility model is in use, for the waste gas recovery device of a hydrogen generator, a tank body, a liquid replenishing pipe, a liquid discharging pipe, a vertical pipe, a horizontal pipe, an air inlet pipe and a motor are provided. After the waste gas enters the interior of the tank body from the air inlet pipe, the ammonia gas in the waste gas is absorbed by the absorption liquid in the tank body. In this process, the vertical pipe and the horizontal pipe are driven by the motor to rotate, so that the waste gas can be ejected from multiple angles after entering the interior of the tank body, increasing the contact area between the waste gas and the absorption liquid, thereby improving the absorption effect.

[0013] 2. When the present utility model is in use, for the waste gas recovery device of a hydrogen generator, a secondary recovery component is provided. The gas absorbed by the tank body enters the secondary recovery component along the exhaust pipe, and the residual ammonia gas in the waste gas is further absorbed by the activated carbon plates of the secondary recovery component, improving the recovery effect. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific implementation manners will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 : Overall cross-sectional view of the present utility model;

[0016] Figure 2 : Figure 1 Enlarged view at A in the present utility model;

[0017] Figure 3 : Figure 1 Enlarged view at B in the present utility model;

[0018] Figure 4 : Stereoscopic view of the partition plate of the present utility model;

[0019] Figure 5 : Stereoscopic view of the secondary recovery component of the present utility model.

[0020] The reference numerals are as follows:

[0021] 1. Tank body; 2. Liquid replenishing pipe; 3. Liquid discharging pipe; 4. Vertical pipe; 5. Horizontal pipe; 6. Air inlet pipe; 61. Pipe sleeve; 7. Motor; 8. Driven gear; 9. Driving gear; 10. Partition board; 101. Strip-shaped opening; 11. Exhaust pipe; 12. Secondary recovery assembly; 121. Box body; 122. Bottom cover; 123. Locking bolt; 124. Activated carbon plate; 125. Air outlet pipe; 126. Sealing ring. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] As Figures 1 - 5 shown, it relates to an exhaust gas recovery device of a hydrogen generator, including a tank body 1. A liquid replenishing pipe 2 is fixed at the top end of the side wall of the tank body 1, and a liquid discharging pipe 3 is fixedly connected to the bottom of the tank body 1. A vertical pipe 4 penetrates and is rotatably connected to the top wall of the tank body 1. The bottom end of the vertical pipe 4 is fixedly connected to a horizontal pipe 5, and a plurality of exhaust holes are formed on the surface of the horizontal pipe 5. An air inlet pipe 6 communicated with the vertical pipe 4 is fixed on the upper surface of the tank body 1. A motor 7 for driving the vertical pipe 4 to rotate is installed on the upper surface of the tank body 1. An exhaust pipe 11 is fixedly connected to the top wall of the tank body 1, and the other end of the exhaust pipe 11 is fixedly connected to a secondary recovery assembly 12.

[0024] Valves are fixedly connected to the middle parts of the liquid replenishing pipe 2 and the liquid discharging pipe 3.

[0025] The valves can control the opening and closing of the liquid replenishing pipe 2 and the liquid discharging pipe 3. Absorbing liquid can be injected into the tank body 1 through the liquid replenishing pipe 2. When the absorbing liquid is saturated, the absorbing liquid can be discharged from the liquid discharging pipe 3.

[0026] A pipe sleeve 61 is fixedly connected to one end of the air inlet pipe 6 close to the vertical pipe 4. The top end of the vertical pipe 4 is hermetically and rotatably connected to the pipe sleeve 61. A driven gear 8 is fixedly connected to the surface of the top end of the vertical pipe 4. A driving gear 9 is fixedly connected to the driving end of the motor 7, and the driving gear 9 meshes with the driven gear 8.

[0027] After the exhaust gas enters the air inlet pipe 6, it will enter the horizontal pipe 5 along the vertical pipe 4 and then be discharged from the exhaust holes on the horizontal pipe 5, so that the ammonia gas in the exhaust gas is absorbed by the absorbing liquid. In this process, the vertical pipe 4 can be driven to rotate by the motor 7, so that the exhaust gas can be more evenly distributed in the tank body 1, improving the absorption effect.

[0028] A plurality of partition boards 10 are fixedly arranged at equal intervals from bottom to top inside the tank body 1. A strip-shaped opening 101 for passing through the vertical pipe 4 is formed in the middle of the partition board 10, and the plurality of partition boards 10 are arranged in a staggered manner.

[0029] Setting multiple partition plates 10 can slow down the floating speed of the waste gas in the absorption liquid, increase the contact time between the waste gas and the absorption liquid, and thus improve the absorption efficiency.

[0030] The secondary recovery component 12 includes a box body 121 fixedly connected to the exhaust pipe 11. The bottom end of the box body 121 is designed with an open end. A bottom cover 122 is sleeved on the bottom surface of the box body 121. A locking bolt 123 penetrates and is threadedly connected to the side wall of the bottom cover 122. A plurality of activated carbon plates 124 are stacked on the surface of the bottom cover 122. An air outlet pipe 125 is fixedly connected to the middle of the bottom cover 122.

[0031] The absorbed waste gas will enter the interior of the box body 121 along the exhaust pipe 11, and the ammonia gas in the waste gas is further absorbed through the activated carbon plates 124, so as to ensure the ammonia gas recovery effect.

[0032] A sealing ring 126 is fixedly connected to the bottom end of the side wall of the box body 121. The sealing ring 126 can increase the sealing performance between the bottom cover 122 and the box body 121. When it is necessary to replace the activated carbon plates 124, the locking bolts 123 on the bottom cover 122 can be unscrewed, and then the bottom cover 122 can be disassembled from the bottom of the box body 121. At this time, the activated carbon plates 124 can be taken out for replacement.

[0033] Working principle: First, add the absorption liquid into the tank body 1 through the liquid supplement pipe 2, and then introduce the waste gas into the interior of the tank body 1 from the air inlet pipe 6. During the process of introducing the waste gas, start the motor 7 to drive the vertical pipe 4 and the horizontal pipe 5 to rotate, so that the waste gas can rotate when it is discharged from the exhaust holes on the horizontal pipe 5, increasing the contact area between the waste gas and the absorption liquid. After the waste gas floats in the absorption liquid, it is discharged from the exhaust pipe 11 and enters the interior of the box body 121. Then, the residual ammonia gas in the waste gas is adsorbed by the activated carbon plates 124 in the box body 121, and finally the waste gas is discharged from the air outlet pipe 125.

[0034] The above disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An exhaust gas recovery device for a hydrogen generator, comprising a tank body (1), characterized in that: A liquid supplement pipe (2) is fixedly connected to the top end of the side wall of the tank body (1), and a liquid discharge pipe (3) is fixedly connected to the bottom of the tank body (1). A vertical pipe (4) penetrates and is rotatably connected to the top wall of the tank body (1). The bottom end of the vertical pipe (4) is fixedly connected to a horizontal pipe (5), and a plurality of exhaust holes are formed on the surface of the horizontal pipe (5). An air inlet pipe (6) communicated with the vertical pipe (4) is fixedly connected to the upper surface of the tank body (1). A motor (7) for driving the vertical pipe (4) to rotate is installed on the upper surface of the tank body (1). An exhaust pipe (11) is fixedly connected to the top wall of the tank body (1), and the other end of the exhaust pipe (11) is fixedly connected to a secondary recovery assembly (12).

2. The waste gas recovery device of a hydrogen generator according to claim 1, characterized in that: Valves are fixedly connected to the middle parts of the liquid supplement pipe (2) and the liquid discharge pipe (3).

3. The waste gas recovery device of a hydrogen generator according to claim 1, characterized in that: A pipe sleeve (61) is fixedly connected to one end of the air inlet pipe (6) close to the vertical pipe (4). The top end of the vertical pipe (4) is hermetically and rotatably connected to the pipe sleeve (61). A driven gear (8) is fixedly connected to the surface of the top end of the vertical pipe (4). A driving gear (9) is fixedly connected to the driving end of the motor (7), and the driving gear (9) meshes with the driven gear (8).

4. The waste gas recovery device of a hydrogen generator according to claim 1, characterized in that: A plurality of partition plates (10) are fixedly arranged at equal intervals from bottom to top inside the tank body (1). A strip-shaped opening (101) for passing through the vertical pipe (4) is formed in the middle of the partition plate (10), and the plurality of partition plates (10) are arranged in a staggered manner.

5. The waste gas recovery device of a hydrogen generator according to claim 1, characterized in that: The secondary recovery assembly (12) includes a box body (121) fixedly connected to the exhaust pipe (11). The bottom end of the box body (121) is designed to be open. A bottom cover (122) is sleeved on the bottom surface of the box body (121). A locking bolt (123) penetrates and is threadedly connected to the side wall of the bottom cover (122). A plurality of activated carbon plates (124) are stacked and placed on the surface of the bottom cover (122). An air outlet pipe (125) is fixedly connected to the middle of the bottom cover (122).

6. The waste gas recovery device of a hydrogen generator according to claim 5, characterized in that: A sealing ring (126) is fixedly connected to the bottom end of the side wall of the box body (121).

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