Device for removing carbon monoxide in hydrogen-rich gas

Abstract

The utility model discloses a device for removing carbon monoxide in hydrogen-rich gas, which belongs to the technical field of hydrogen fuel cells and comprises a hydrogen-rich gas introduction mechanism, an air introduction mechanism, a multi-stage carbon monoxide removal mechanism and a gas discharge mechanism, the utility model further discloses a removal method of the device for removing the carbon monoxide in the hydrogen-rich gas. The device is provided with the first-stage carbon monoxide remover, the second-stage carbon monoxide remover and the third-stage carbon monoxide remover, so that carbon monoxide in the hydrogen-rich gas can be removed through multi-stage reaction, and the removal efficiency of the carbon monoxide is improved, so that the purity of the hydrogen-rich gas is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen fuel cells, and particularly relates to a device for removing carbon monoxide in hydrogen-rich gas. Background Technique

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy.

[0003] As the fuel of a hydrogen fuel cell, hydrogen-rich gas is an important part of the hydrogen fuel cell, and the content of carbon monoxide inside needs to be strictly controlled.

[0004] At present, the method for removing carbon monoxide in hydrogen-rich gas generally adopts the method of preferential oxidation of carbon monoxide to remove carbon monoxide in hydrogen-rich gas. This method has the problem that the amount of air is difficult to accurately control. If the amount of air is too small, carbon monoxide removal is incomplete, and if the amount of air is too much, hydrogen will be consumed, reducing the removal efficiency of carbon monoxide by this method.

[0005] In view of this, a device for removing carbon monoxide in hydrogen-rich gas is designed to solve the above problems. Content of the Utility Model

[0006] To solve the problems raised in the above background technique, the utility model provides a device for removing carbon monoxide in hydrogen-rich gas, which has the characteristic of improving the removal efficiency of carbon monoxide.

[0007] Another object of the utility model is to provide a method for removing carbon monoxide in the device for removing carbon monoxide in hydrogen-rich gas.

[0008] To achieve the above object, the utility model provides the following technical solution: A device for removing carbon monoxide in hydrogen-rich gas, comprising:

[0009] A hydrogen-rich gas inlet mechanism for introducing hydrogen-rich gas;

[0010] An air inlet mechanism for introducing air;

[0011] A multi-stage carbon monoxide removal mechanism, which is connected to the hydrogen-rich gas inlet mechanism and the air inlet mechanism to receive the hydrogen-rich gas introduced by the hydrogen-rich gas inlet mechanism and the air introduced by the air inlet mechanism. The hydrogen-rich gas and the air undergo multi-stage reactions to remove carbon monoxide in the hydrogen-rich gas;

[0012] A gas discharge mechanism, which is connected to the gas outlet end of the last stage of the multi-stage carbon monoxide removal mechanism to discharge the hydrogen-rich gas with carbon monoxide removed.

[0013] Further, the hydrogen-rich gas introduction mechanism includes a first steam separator and a first carbon monoxide detector. Pipes are connected between the hydrogen-rich gas inlet end of the first steam separator, between the hydrogen-rich gas outlet end of the first steam separator and the hydrogen-rich gas inlet end of the first carbon monoxide detector, and at the hydrogen-rich gas outlet end of the first carbon monoxide detector.

[0014] Further, the air introduction mechanism includes an air filter, an air pump, a check valve, and a gas storage cylinder. Pipes are connected between the air outlet end of the air filter and the air inlet end of the air pump, between the air outlet end of the air pump and the air inlet end of the check valve, between the air outlet end of the check valve and the air inlet end of the gas storage cylinder, and at the air outlet end of the gas storage cylinder.

[0015] Further, the multi-stage carbon monoxide removal mechanism includes a primary carbon monoxide remover, a secondary carbon monoxide remover, and a tertiary carbon monoxide remover. The other end of the pipe at the gas inlet end of the primary carbon monoxide remover is connected to the hydrogen-rich gas outlet end of the first carbon monoxide detector. The pipe at the gas outlet end of the primary carbon monoxide remover is connected to the pipe at the air outlet end of the gas storage cylinder. The other end of the pipe at the gas inlet end of the secondary carbon monoxide remover is connected to the pipe at the air outlet end of the gas storage cylinder. A pipe is connected between the gas outlet end of the secondary carbon monoxide remover and the gas inlet end of the tertiary carbon monoxide remover. The other end of the pipe at the gas inlet end of the tertiary carbon monoxide remover is connected to the pipe at the air outlet end of the gas storage cylinder.

[0016] Further, the gas discharge mechanism includes a second steam separator and a third carbon monoxide detector. Pipes are connected between the gas inlet end of the second steam separator and the gas outlet end of the tertiary carbon monoxide remover, and at the gas outlet end of the second steam separator. The third carbon monoxide detector is arranged on the pipe at the gas outlet end of the second steam separator.

[0017] Further, the air introduction mechanism further includes a voltage stabilizer and throttle orifices. There are two voltage stabilizers and three throttle orifices. Pipes are connected between the air outlet end of the gas storage cylinder and the air inlet ends of the two voltage stabilizers, between the air outlet ends of the two voltage stabilizers and the air inlet ends of the three throttle orifices, and at the air outlet ends of the three throttle orifices. The air inlet end of one of the three throttle orifices is connected to the air outlet end of one of the two voltage stabilizers through a pipe. The air inlet ends of the other two of the three throttle orifices are connected to the air outlet end of the other of the two voltage stabilizers through pipes. The pipe at the gas outlet end of the primary carbon monoxide remover is connected to the air outlet end of one of the three throttle orifices, i.e., the first throttle orifice. The other end of the pipe at the gas inlet end of the secondary carbon monoxide remover is connected to the air outlet end of one of the three throttle orifices, i.e., the second throttle orifice. The other end of the pipe at the gas inlet end of the tertiary carbon monoxide remover is connected to the air outlet end of one of the three throttle orifices, i.e., the third throttle orifice.

[0018] Further, the air inlet mechanism further includes a pressure switch, two first pressure transducers, two flow meters, and three second pressure transducers. There are two first pressure transducers, two flow meters, and three second pressure transducers respectively. The pressure switch is arranged on the pipeline between the air outlet end of the gas cylinder and the air inlet ends of the two voltage stabilizers. The two first pressure transducers are respectively arranged on the pipelines between the air outlet ends of the two voltage stabilizers and the air inlet ends of the two flow meters. The two flow meters are respectively arranged on the pipelines between the air outlet ends of the two voltage stabilizers and the air inlet ends of the three throttle holes. The three second pressure transducers are respectively arranged on the pipelines at the air outlet ends of the three throttle holes.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. The present utility model is provided with a primary carbon monoxide remover, a secondary carbon monoxide remover, and a tertiary carbon monoxide remover, which can remove carbon monoxide in the hydrogen-rich gas through multiple reactions, improve the removal efficiency of carbon monoxide, and thus improve the purity of the hydrogen-rich gas.

[0021] By precisely controlling the air flow rate, efficient removal of carbon monoxide is achieved while reducing the consumption of hydrogen.

[0022] 2. The present utility model is provided with a voltage stabilizer and throttle holes, which can achieve voltage stabilization and current stabilization of air. At the same time, a pressure switch, two first pressure transducers, two flow meters, and three second pressure transducers are provided, which can monitor the pressure and flow rate of air in real time for adjusting voltage stabilization and current stabilization, that is, can accurately control the entry of air, improve the removal efficiency of carbon monoxide, and reduce the consumption of hydrogen in the hydrogen-rich gas.

[0023] 3. The device of the present utility model has a simple structure, is easy to operate, has a low cost, and is suitable for large-scale application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] In the figure: 101, the first steam-water separator; 102, the first carbon monoxide detector;

[0026] 201, air filter; 202, air pump; 203, check valve; 204, gas cylinder; 205, pressure switch; 206, voltage stabilizer; 207, first pressure transducer; 208, flow meter; 209, throttle hole; 210, second pressure transducer; 211, second carbon monoxide detector;

[0027] 301, primary carbon monoxide remover; 302, secondary carbon monoxide remover; 303, tertiary carbon monoxide remover;

[0028] 401. Second steam separator; 402. Third carbon monoxide detector. Detailed implementation mode

[0029] 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 creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] A device for removing carbon monoxide from hydrogen-rich gas, comprising:

[0032] A hydrogen-rich gas inlet mechanism for introducing hydrogen-rich gas;

[0033] An air inlet mechanism for introducing air;

[0034] A multi-stage carbon monoxide removal mechanism, which is connected to the hydrogen-rich gas inlet mechanism and the air inlet mechanism to receive the hydrogen-rich gas introduced by the hydrogen-rich gas inlet mechanism and the air introduced by the air inlet mechanism. The hydrogen-rich gas and the air undergo multi-stage reactions to remove carbon monoxide from the hydrogen-rich gas;

[0035] A gas discharge mechanism, which is connected to the gas outlet end of the last stage of the multi-stage carbon monoxide removal mechanism to discharge the hydrogen-rich gas from which carbon monoxide has been removed.

[0036] Specifically, the hydrogen-rich gas inlet mechanism includes a first steam separator 101 and a first carbon monoxide detector 102. Pipes are connected between the hydrogen-rich gas inlet end of the first steam separator 101, between the hydrogen-rich gas outlet end of the first steam separator 101 and the hydrogen-rich gas inlet end of the first carbon monoxide detector 102, and the hydrogen-rich gas outlet end of the first carbon monoxide detector 102.

[0037] Specifically, the air inlet mechanism includes an air filter 201, an air pump 202, a one-way valve 203, and a gas storage cylinder 204. Pipes are connected between the air outlet end of the air filter 201 and the air inlet end of the air pump 202, between the air outlet end of the air pump 202 and the air inlet end of the one-way valve 203, between the air outlet end of the one-way valve 203 and the air inlet end of the gas storage cylinder 204, and the air outlet end of the gas storage cylinder 204.

[0038] Specifically, the multi-stage carbon monoxide removal mechanism includes a primary carbon monoxide remover 301, a secondary carbon monoxide remover 302, and a tertiary carbon monoxide remover 303. The gas inlet end of the primary carbon monoxide remover 301 is connected to the other end of the pipeline at the hydrogen-rich gas outlet end of the first carbon monoxide detector 102. The gas outlet end of the primary carbon monoxide remover 301 is connected to the pipeline at the air outlet end of the gas storage cylinder 204. The gas inlet end of the secondary carbon monoxide remover 302 is connected to the other end of the pipeline at the air outlet end of the gas storage cylinder 204. A pipeline is connected between the gas outlet end of the secondary carbon monoxide remover 302 and the gas inlet end of the tertiary carbon monoxide remover 303. The gas inlet end of the tertiary carbon monoxide remover 303 is connected to the other end of the pipeline at the air outlet end of the gas storage cylinder 204.

[0039] Specifically, the gas discharge mechanism includes a second steam-water separator 401 and a third carbon monoxide detector 402. Pipelines are connected between the gas inlet end of the second steam-water separator 401 and the gas outlet end of the tertiary carbon monoxide remover 303, and at the gas outlet end of the second steam-water separator 401. The third carbon monoxide detector 402 is arranged on the pipeline at the gas outlet end of the second steam-water separator 401.

[0040] The removal method of the carbon monoxide removal device in the hydrogen-rich gas includes the following steps:

[0041] S1: The hydrogen-rich gas enters the first steam-water separator 101 through the pipeline to remove moisture. Subsequently, it enters the first carbon monoxide detector 102 through the pipeline to initially measure the content of carbon monoxide in the hydrogen-rich gas. Subsequently, it enters the primary carbon monoxide remover 301 through the pipeline.

[0042] S2: The air pump 202 sucks, and the air enters the air filter 201 for filtration. The filtered air enters the air pump 202 through the pipeline, then enters the one-way valve 203 through the pipeline, then enters the gas storage cylinder 204 through the pipeline for temporary storage, and then enters the primary carbon monoxide remover 301, the secondary carbon monoxide remover 302, and the tertiary carbon monoxide remover 303 respectively through the pipeline.

[0043] S3: The hydrogen-rich gas and air entering the primary carbon monoxide remover 301 react in the primary carbon monoxide remover 301 to initially remove the carbon monoxide in the hydrogen-rich gas. The reacted hydrogen-rich gas enters the secondary carbon monoxide remover 302 through the pipeline.

[0044] S4: The hydrogen-rich gas and air entering the secondary carbon monoxide remover 302 react in the secondary carbon monoxide remover 302 to remove the carbon monoxide in the hydrogen-rich gas again. The reacted hydrogen-rich gas enters the second carbon monoxide detector 211 through the pipeline to measure the content of carbon monoxide in the hydrogen-rich gas again. Subsequently, it enters the tertiary carbon monoxide remover 303 through the pipeline.

[0045] S5: The hydrogen-rich gas and air entering the tertiary carbon monoxide remover 303 react inside the tertiary carbon monoxide remover 303 to remove carbon monoxide in the hydrogen-rich gas again. The hydrogen-rich gas after the reaction enters the second steam-water separator 401 through a pipeline to remove moisture again. Subsequently, it enters the third carbon monoxide detector 402 through a pipeline. Finally, the content of carbon monoxide in the hydrogen-rich gas is measured. If it is qualified, it is discharged; otherwise, the above steps are repeated to remove carbon monoxide in the hydrogen-rich gas.

[0046] Example 2

[0047] The difference between this example and Example 1 is as follows:

[0048] Specifically, the air inlet mechanism further includes a voltage stabilizer 206 and throttle holes 209. There are two voltage stabilizers 206 and three throttle holes 209. Pipes are connected between the air outlet end of the gas storage cylinder 204 and the air inlet ends of the two voltage stabilizers 206, between the air outlet ends of the two voltage stabilizers 206 and the air inlet ends of the three throttle holes 209, and between the air outlet ends of the three throttle holes 209. The air inlet end of one of the three throttle holes 209 is connected to the air outlet end of one of the two voltage stabilizers 206 through a pipeline. The air inlet ends of the other two throttle holes 209 among the three throttle holes 209 are connected to the air outlet end of the other voltage stabilizer 206 among the two voltage stabilizers 206 through a pipeline. The gas outlet end of the primary carbon monoxide remover 301 is connected to the pipeline at the air outlet end of one of the three throttle holes 209, that is, the first throttle hole 209. The gas inlet end of the secondary carbon monoxide remover 302 is connected to the other end of the pipeline at the air outlet end of one of the three throttle holes 209, that is, the second throttle hole 209. The gas inlet end of the tertiary carbon monoxide remover 303 is connected to the other end of the pipeline at the air outlet end of one of the three throttle holes 209, that is, the third throttle hole 209.

[0049] The removal method of the carbon monoxide removal device for hydrogen-rich gas further includes the following steps:

[0050] In step S2, before the air temporarily stored in the gas storage cylinder 204 enters the primary carbon monoxide remover 301, the secondary carbon monoxide remover 302, and the tertiary carbon monoxide remover 303 through pipelines respectively, it enters the two voltage stabilizers 206 through pipelines respectively. The air in the two voltage stabilizers 206 enters the three throttle holes 209 through pipelines respectively. The air in the three throttle holes 209 enters the primary carbon monoxide remover 301, the secondary carbon monoxide remover 302, and the tertiary carbon monoxide remover 303 through pipelines respectively, realizing the voltage stabilization and flow stabilization of the entering air.

[0051] Example 3

[0052] The difference between this embodiment and the second embodiment lies in that:

[0053] Specifically, the air inlet mechanism further includes a pressure switch 205, two first pressure transducers 207, two flow meters 208 and three second pressure transducers 210. There are two first pressure transducers 207, two flow meters 208, and three second pressure transducers 210 are respectively provided. The pressure switch 205 is arranged on the pipeline between the air outlet end of the gas storage cylinder 204 and the air inlet ends of the two voltage stabilizers 206. The two first pressure transducers 207 are respectively arranged on the pipelines between the air outlet ends of the two voltage stabilizers 206 and the air inlet ends of the two flow meters 208. The two flow meters 208 are respectively arranged on the pipelines between the air outlet ends of the two voltage stabilizers 206 and the air inlet ends of the three throttle holes 209. The three second pressure transducers 210 are respectively arranged on the pipelines at the air outlet ends of the three throttle holes 209.

[0054] The removal method of the carbon monoxide removal device for hydrogen-rich gas further includes the following steps:

[0055] In step S2, the pressure switch 205, the two first pressure transducers 207, the two flow meters 208 and the three second pressure transducers 210 monitor the pressure and flow rate of the air in real time to achieve the adjustment of air pressure and flow rate stabilization.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Device for removing carbon monoxide in hydrogen-rich gas, characterized in that, Comprising: A hydrogen-rich gas inlet mechanism for introducing hydrogen-rich gas; An air inlet mechanism for introducing air; A multi-stage carbon monoxide removal mechanism, connected to the hydrogen-rich gas inlet mechanism and the air inlet mechanism, to receive the hydrogen-rich gas introduced by the hydrogen-rich gas inlet mechanism and the air introduced by the air inlet mechanism, and the hydrogen-rich gas and air undergo multi-stage reactions to remove carbon monoxide in the hydrogen-rich gas; A gas discharge mechanism, connected to the gas outlet end of the last stage of the multi-stage carbon monoxide removal mechanism, to discharge the hydrogen-rich gas with carbon monoxide removed.

2. The carbon monoxide removal device for hydrogen-rich gas according to claim 1, characterized in that: The hydrogen-rich gas inlet mechanism includes a first steam-water separator (101) and a first carbon monoxide detector (102), and pipelines are connected between the hydrogen-rich gas inlet end of the first steam-water separator (101), between the hydrogen-rich gas outlet end of the first steam-water separator (101) and the hydrogen-rich gas inlet end of the first carbon monoxide detector (102), and the hydrogen-rich gas outlet end of the first carbon monoxide detector (102).

3. The carbon monoxide removal device for hydrogen-rich gas according to claim 2, wherein: The air inlet mechanism includes an air filter (201), an air pump (202), a one-way valve (203), and a gas storage cylinder (204), and pipelines are connected between the air outlet end of the air filter (201) and the air inlet end of the air pump (202), between the air outlet end of the air pump (202) and the air inlet end of the one-way valve (203), between the air outlet end of the one-way valve (203) and the air inlet end of the gas storage cylinder (204), and the air outlet end of the gas storage cylinder (204).

4. The apparatus for removing carbon monoxide from hydrogen-rich gas according to claim 3, characterized in that: The multi-stage carbon monoxide removal mechanism includes a first-stage carbon monoxide remover (301), a second-stage carbon monoxide remover (302), and a third-stage carbon monoxide remover (303). The gas inlet end of the first-stage carbon monoxide remover (301) is connected to the other end of the pipeline of the hydrogen-rich gas outlet end of the first carbon monoxide detector (102), the gas outlet end of the first-stage carbon monoxide remover (301) is connected to the pipeline of the air outlet end of the gas storage cylinder (204), the gas inlet end of the second-stage carbon monoxide remover (302) is connected to the other end of the pipeline of the air outlet end of the gas storage cylinder (204), a pipeline is connected between the gas outlet end of the second-stage carbon monoxide remover (302) and the gas inlet end of the third-stage carbon monoxide remover (303), and the gas inlet end of the third-stage carbon monoxide remover (303) is connected to the other end of the pipeline of the air outlet end of the gas storage cylinder (204).

5. The carbon monoxide removal device for hydrogen-rich gas according to claim 4, characterized in that: The gas discharge mechanism includes a second steam-water separator (401) and a third carbon monoxide detector (402), and pipelines are connected between the gas inlet end of the second steam-water separator (401) and the gas outlet end of the third-stage carbon monoxide remover (303), and the gas outlet end of the second steam-water separator (401). The third carbon monoxide detector (402) is arranged on the pipeline of the gas outlet end of the second steam-water separator (401).

6. The carbon monoxide removal device for hydrogen-rich gas according to claim 4, characterized in that: The air inlet mechanism further includes a voltage stabilizer (206) and throttle holes (209). There are two voltage stabilizers (206) and three throttle holes (209). Pipes are connected between the air outlet end of the gas storage cylinder (204) and the air inlet ends of the two voltage stabilizers (206), between the air outlet ends of the two voltage stabilizers (206) and the air inlet ends of the three throttle holes (209), and at the air outlet ends of the three throttle holes (209). The air inlet end of one of the three throttle holes (209) is connected to the air outlet end of one of the two voltage stabilizers (206) through a pipe, and the air inlet ends of the other two throttle holes (209) among the three throttle holes (209) are connected to the air outlet end of the other voltage stabilizer (206) among the two voltage stabilizers (206) through a pipe. The gas outlet end of the primary carbon monoxide remover (301) is connected to the pipe at the air outlet end of one of the three throttle holes (209), i.e., the first throttle hole (209). The gas inlet end of the secondary carbon monoxide remover (302) is connected to the other end of the pipe at the air outlet end of one of the three throttle holes (209), i.e., the second throttle hole (209). The gas inlet end of the tertiary carbon monoxide remover (303) is connected to the other end of the pipe at the air outlet end of one of the three throttle holes (209), i.e., the third throttle hole (209).

7. The apparatus for removing carbon monoxide from a hydrogen-rich gas according to claim 6, wherein: The air inlet mechanism further includes a pressure switch (205), a first pressure transducer (207), a flowmeter (208), and a second pressure transducer (210). There are two first pressure transducers (207), two flowmeters (208), and three second pressure transducers (210) respectively. The pressure switch (205) is arranged on the pipe between the air outlet end of the gas storage cylinder (204) and the air inlet ends of the two voltage stabilizers (206). The two first pressure transducers (207) are respectively arranged on the pipes between the air outlet ends of the two voltage stabilizers (206) and the air inlet ends of the two flowmeters (208). The two flowmeters (208) are respectively arranged on the pipes between the air outlet ends of the two voltage stabilizers (206) and the air inlet ends of the three throttle holes (209). The three second pressure transducers (210) are respectively arranged on the pipes at the air outlet ends of the three throttle holes (209).

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