CN209843848U

CN209843848U - Fuel cell automobile exhaust dehydrogenation device

Info

Publication number: CN209843848U
Application number: CN201920882921.3U
Authority: CN
Inventors: 李世刚; 马凤坤; 荣杰
Original assignee: Beijing Jiaan Hydrogen Source Technology Co Ltd
Current assignee: Beijing Jiaan Hydrogen Source Technology Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2019-12-24
Anticipated expiration: 2029-06-13

Abstract

A fuel cell automobile tail gas dehydrogenation device belongs to a purification treatment device and is used for purifying and treating hydrogen tail gas of a fuel cell. The catalytic converter comprises a tail gas pipe, an air pipe, a cyclone separator and a catalyst, wherein the cyclone separator is connected with the catalyst through a hose, the tail gas pipe is connected with a gas inlet at one end of the cyclone separator, and the air pipe is connected with a gas inlet at the bottom end of the cyclone separator; an electromagnetic valve is arranged between the hose and the cyclone separator, and when the pressure in the cyclone separator reaches a set value, the electromagnetic valve is automatically opened; the catalyst arranged in the catalyst is used for the catalytic reaction of oxygen and hydrogen to generate water, thereby achieving the aim of safe discharge. The beneficial effects are that: the hydrogen-containing tail gas discharged by the fuel cell system can be safely purified and treated in a catalytic reaction mode, and potential influence and harm to the atmosphere and the environment due to the discharge of hydrogen are reduced. The system integration level is high, and occupation space is little, and the installation is dismantled conveniently.

Description

Fuel cell automobile exhaust dehydrogenation device

Technical Field

The utility model belongs to a purification treatment device for to the purification treatment of fuel cell hydrogen tail gas.

Background

The fuel cell is a fourth generation power generation technology following the water power, the fire power and the atomic power generation, is the only power device which has the advantages of no pollution, high efficiency, wide application, no noise and continuous work at the same time at present, and is considered to be a high-efficiency clean power generation technology with the greatest development prospect in the 21 st century. Compared with three new energy industries of biological fuel, wind power generation and solar energy, the fuel cell has smaller market scale at present.

At present, the application of fuel cells is mainly focused in three fields, fuel cell automotive applications, fuel cell portable equipment applications, and fuel cell stationary power station applications. Among them, motor vehicles are the fields of largest industrial scale and most intense international technical research and development in all the application fields of fuel cells in the future.

A fuel cell is a device that directly converts chemical energy of hydrogen and oxygen into electrical energy through an electrode reaction, and can provide electric power to an electric vehicle. The fuel cell has the characteristics of no pollution, high efficiency, wide application, low noise, capability of rapidly supplementing energy, modular structure and the like, so the fuel cell is considered to be the most ideal automobile power device for replacing the traditional internal combustion engine in the future. Compared with the traditional internal combustion engine, the structure and the working principle of the fuel cell automobile engine have revolutionary changes, and the energy conversion efficiency is greatly improved.

The tail gas discharged by the current fuel cell automobile contains a certain amount of hydrogen, the hydrogen is derived from raw material hydrogen which cannot completely participate in the reaction in the fuel cell, in the current fuel cell technology, the hydrogen discharge is inevitable, however, the hydrogen belongs to flammable and explosive gas, the lower limit of the explosion limit is low and is only 4%, and the upper limit is high and is 76%; the explosive concentration range is wide, and the explosion possibility is extremely high. If the tail gas of the fuel cell is directly discharged into the atmosphere, on one hand, the hydrogen in the tail gas has a combustion and explosion hazard in the atmosphere, particularly, the hydrogen meets a small or closed space, so that the possibility of explosion is very high, and on the other hand, the hydrogen in the tail gas also has a combustion and explosion hazard in a tail gas system of the fuel cell.

At present, aiming at the problems, two technical routes are adopted in the industry for treatment, the first is to inject a large amount of air into tail gas for mixing, dilute hydrogen in the tail gas to enable the hydrogen to be lower than the lower limit of the explosive concentration for emission, but the tail gas emission of the fuel cell is intermittent emission, and meanwhile, the fluctuation of the hydrogen concentration in the tail gas is large, so that an air injection fan needs to be started and stopped in real time, the air injection volume is adjusted in real time, and the adjustment and the control are complex. The second is to adopt a reaction catalyst, so that hydrogen reacts to generate water and then is discharged, but the system integration level is not high in the method, so that a lot of inconvenience exists in practical application, for example, the device is inconvenient to install and disassemble, the activity of the catalyst is not high at a lower temperature, the catalyst is inconvenient to replace, and the like, and the adaptability of an air mixing system in more important catalytic reaction is not strong.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a realize that the hydrogen that fuel cell car produced carries out the dehydrogenation device of effective processing.

In order to achieve the above purpose, the utility model discloses a technical scheme is:

a fuel cell automobile exhaust dehydrogenation device comprises an exhaust pipe, an air pipe, a cyclone separator and a catalyst, wherein the cyclone separator is connected with the catalyst through a hose, the exhaust pipe is connected with a gas inlet at one end of the cyclone separator, and the air pipe is connected with a bottom air inlet of the cyclone separator; an electromagnetic valve is arranged between the hose and the cyclone separator, and when the pressure in the cyclone separator reaches a set value, the electromagnetic valve is automatically opened;

a wall collector is sequentially arranged in the shell cylinder of the catalytic converter and is used for leading the mixed gas to intensively pass through the catalyst; the gas distribution pore plate is used for enabling the mixed gas to uniformly pass through the catalyst; the wire mesh is used for compacting the catalyst and preventing the catalyst from being blown away by airflow; the catalyst is used for carrying out catalytic reaction between oxygen and hydrogen to generate water, so that the aim of safe discharge is fulfilled; the tail end of the catalyst is sequentially provided with a wire mesh and a gas distribution pore plate for compacting the tail end catalyst and preventing the tail end catalyst from blowing; snap rings are arranged on the peripheries of the gas distribution pore plates at the front end and the tail end of the wall collector at the front end inside the catalytic converter, and the snap rings are embedded in the inner wall of the cylinder body and used for fixing the gas distribution pore plates at the wall collector and the tail end.

Furthermore, the cyclone separator main body adopts a barrel-shaped structure, the arranged water discharging and air discharging side adopts an eccentric cone-shaped structure, and the upper part of the eccentric cone of the air discharging and water discharging end of the cyclone separator is provided with a hole for connecting a hose for exhausting; the tail part of the eccentric cone is provided with a hole for installing a drain valve for draining water. The cyclone separator is horizontally arranged, and the top of the cyclone separator is connected with the tail gas of the fuel cell and enters the gas in the radial direction; the air pipe is connected in the bottom mirror image direction, and air is radially introduced; the air is introduced by adopting the mode, so that the tail gas and the air flow into the cavity of the cyclone separator tangentially at the same time, and spiral flow is carried out in the cyclone separator in the same direction.

Furthermore, the catalytic converter adopts a cylindrical structure, one end of a cylindrical shell body of the catalytic converter is welded with a sealing plate, and a hole is formed in the sealing plate for welding a connector; the other end opening of the cylinder body discharges air and water after catalytic reaction; the catalyst converter barrel adopts a segmented structure and is divided into two sections in the length direction, the middle part of the barrel is disconnected and connected by a clamp, and the catalyst converter barrel is used for installing and disassembling the internal device of the catalyst converter and can be quickly disassembled and assembled to replace the catalyst in the catalyst converter.

Furthermore, an electromagnetic valve is arranged between the hose and an exhaust hole in the upper part of an eccentric cone of the cyclone separator, an acoustic panel is arranged at the rear end of the electromagnetic valve and used for eliminating noise when high-speed gas flows, a quick joint is arranged at the tail end of the hose and used for mounting and dismounting the hose and the catalytic converter, and a corrugated pipe is arranged in the middle of the hose and used for compensating vibration and temperature difference displacement in the horizontal direction. The silencing plate is arranged in the hose.

Furthermore, the utility model discloses be equipped with the rupture disk, install at cyclone air inlet for the superpressure is discharged in the cyclone.

Further, the utility model discloses the whole one end fixed mounting of fuel cell automobile exhaust dehydrogenation device is on fuel cell car chassis, and the other end adopts spring hook to connect on fuel cell car chassis, and the spring hook other end is freely installed on the catalyst converter for when releasing fuel cell car motion, the vibrations of direction about perpendicular.

Furthermore, one end of the air pipe is connected with the air fan, the other end of the air pipe is connected with the air inlet at the bottom end of the cyclone separator, the air injection amount is increased in a forced air injection mode, the air injection amount is far larger than the tail gas amount, the tail gas is greatly diluted, and the air inlet ratio of hydrogen to air is ensured to be less than 1: 25.

Further, the utility model discloses a plurality of rings of copper of catalyst converter windingThe coil pipe is connected to a circulating cold air water system of the fuel cell, circulating cooling water flows in the coil pipe through a circulating fan, and the catalyst is heated by utilizing the heat of the circulating water.

The utility model has the advantages that: the hydrogen-containing tail gas discharged by the fuel cell system can be safely purified and treated in a catalytic reaction mode, and potential influence and harm to the atmosphere and the environment due to the discharge of hydrogen are reduced. The system integration level is high, and occupation space is little, and the installation is dismantled conveniently.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the structure of the catalytic converter of the present invention.

Fig. 3 is a schematic view of a catalyst coil structure according to embodiment 2 of the present invention.

In the figure: 1. an air blower; 2. an air tube; 3. a tail gas pipe; 4. a rupture disk; 5. a cyclone separator; 6. a steam trap; 7. an electromagnetic valve; 8. a sound-absorbing panel; 9. a hose; 10. a bellows; 11. a quick coupling; 12. a catalyst; 13. a coil pipe; 14. a spring hook; 15. a joint; 16. closing the plate; 17. a barrel; 18. clamping a hoop; 19. a snap ring; 20. a vessel wall collector; 21. a gas distribution orifice plate; 22. a wire mesh; 23. a catalyst; 24. a pipeline; 25. and a circulating fan.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

the utility model relates to a fuel cell automobile exhaust dehydrogenation device's overall structure sees figure 1, including cyclone 5, rupture disk 4, solenoid valve 7, air hose 2, air inlet fan 1, hose 9, the system that catalyst converter 12 constitutes, this system contains tail gas collection, the separation, the buffering, air injection, mix, the catalyst converter 12 that is equipped with the catalyst is connected through the flexible coupling quick-operation joint 11 of easy to assemble dismantlement, realize tail gas collection, water vapor separation, the dilution of injected air, catalytic reaction, make the hydrogen among the fuel cell automobile exhaust discharge safely behind the water generation, and the system integration degree is high, it is convenient to dismantle.

The tail gas pipe 3 for receiving the tail gas of the fuel cell is connected with a gas inlet at one end of the cyclone separator 5, on the other hand, one end of the air pipe 2 is connected with the air fan 1, and the other end is connected with a bottom air inlet of the cyclone separator 5; the main body of the cyclone separator 5 adopts a barrel-shaped structure, the arranged water discharging and air discharging side adopts an eccentric cone-shaped structure, and the air inlet end of the cyclone separator 5 is provided with a rupture disc 4 for overpressure discharge in the cyclone separator 5; the upper part of an eccentric cone at the exhaust and drainage end of the cyclone separator 5 is provided with a hole, a connecting hose 9 is used for exhausting, and a drain valve is arranged at the hole at the tail part of the eccentric cone and used for draining;

the small cyclone separator 5 of the utility model is horizontally arranged, the top of the small cyclone separator is connected with the tail gas of the fuel cell, and the tail gas enters the cyclone separator radially; the air pipe is connected to the bottom in the mirror image direction, and air enters in the radial direction. Adopt above-mentioned mode to admit air, make tail gas and air carry out the spiral simultaneously and flow in cyclone 5 in same direction, when using the air to accomplish the tail gas dilution, separate the moisture in the tail gas, the hydrophobic device of 5 afterbody installations of cyclone adopts the hydrophobic mode of volume, and drainage is opened according to the volume of depositing water is automatic to steam trap 6. The bottom of one end of an air inlet of the cyclone separator 5 is provided with a rupture disk 4, and when the inside of the cyclone separator 5 is in overpressure, the rupture disk 4 is exploded to release pressure. The device realizes high integration, accomplishes tail gas dilution, gas-water separation, moisture discharge in same cavity, adopts horizontal arrangement mode simultaneously, saves direction of height space, can make whole dehydrogenation device installation space bigger.

The hose 9 is connected with an exhaust hole at the upper part of an eccentric cone of the cyclone separator 5, an electromagnetic valve 7 is arranged between the exhaust holes, an acoustic panel 8 is arranged at the rear end of the electromagnetic valve 7 and used for eliminating noise when high-speed gas flows, a quick joint 11 is arranged at the tail end of the hose 9 and used for installing and disassembling the hose 9 and a catalytic converter 12, and a corrugated pipe 10 is arranged in the middle of the hose 9 and used for compensating vibration and temperature difference displacement in the horizontal direction;

the utility model discloses solenoid valve 7 adopts the backpressure start-up formula to open, and when pressure reached the setting value in cyclone 5, solenoid valve 7 was automatic to be opened, and degree of automation is high, reduces artificial participation control, and the reliability is high. When the electromagnetic valve 7 is closed, the cyclone separator 5 is closed, so that the cyclone separator 5 can buffer the discharge of the irregular pulse tail gas from the fuel cell, the discharge mode of the irregular pulse tail gas becomes a fixed pressure and flow discharge mode, the catalyst 12 at the rear end of the system becomes a device for treating the fixed tail gas quantity, and the design of the catalyst is simplified.

The utility model discloses acoustical panel 8 is installed in hose 9 to dispose one section bellows 10, the ripple pipeline is used for absorbing the ascending inertia of fuel cell car traffic direction and vibrations, guarantees whole dehydrogenation device's safety and life, adopts quick-operation joint 11 coupling hose 9 and catalyst converter 12, can dismantle catalysis by quick easy to assemble, 12, convenient maintenance and change.

The utility model discloses the whole one end fixed mounting of fuel cell automobile exhaust dehydrogenation device on fuel cell car chassis, the other end adopt spring hook 14 to connect on fuel cell car chassis, and when spring hook 14 was used for releasing fuel cell car motion, the vibrations of direction about perpendicular, the free mounting of the 14 other ends of spring hook was on catalyst converter 12.

The utility model discloses a spring couple that takes precautions against earthquakes is right the utility model discloses dehydrogenation device's connection can be solved and dehydrogenation device is in the ascending vibrations of upper and lower side, guarantees dehydrogenation device's safety, especially prevents to shake and makes catalyst friction pulverization, leads to becoming invalid, extension catalyst converter life.

Referring to fig. 2, the structure of the catalytic converter 12, the catalytic converter 12 of the present invention adopts a cylinder structure, the tail gas end is connected with one end opening, and the other end opening is the discharge end. One end of a cylindrical shell body 17 of the catalytic converter 12 is welded with a sealing plate 16, and a hole is formed in the sealing plate 16 and welded with a joint 15; the other end of the cylinder 17 is opened to discharge air and water after catalytic reaction; the cylinder 17 of the catalytic converter 12 is of a segmented structure and is divided into two sections in the length direction, the middle part of the cylinder 17 is disconnected and connected by a hoop 18, and the cylinder is used for installing and disassembling devices in the catalytic converter 12 and can quickly disassemble, assemble and replace a catalyst 23 in the catalytic converter 12; a wall collector 20 is sequentially arranged inside the cylinder body 17 and used for leading the mixed gas to intensively pass through a catalyst 23; a gas distribution pore plate 21 is arranged for enabling the mixed gas to uniformly pass through a catalyst 23; the gauze 22 is used for compacting the catalyst 23 and preventing the catalyst from being blown away by the airflow; the catalyst 23 is used for carrying out catalytic reaction between oxygen and hydrogen to generate water, so that the aim of safe discharge is fulfilled; the tail end of the catalyst 23 is sequentially provided with a silk screen 22 and a gas distribution pore plate 21, and the tail end catalyst 23 is tightly pressed to prevent the tail end catalyst from blowing; snap rings 19 are arranged on the peripheries of gas distribution pore plates 21 at the front end and the tail end of a wall collector 20 at the front end in the catalyst 12, and the snap rings 19 are embedded in the inner wall of the cylinder 17 and used for fixing the wall collector 20 and the gas distribution pore plates 21 at the tail end. The utility model discloses catalyst 12 adopts simple and easy structure, realizes the function of catalyst 23 installation container, sets up wall gas collector 20, gas distribution orifice plate 21 at its tail gas end simultaneously, makes tail gas evenly pass through the catalyst layer, makes the complete catalytic reaction of hydrogen, uses snap ring 19 installation catalyst converter barrel in the while device, and is simple swift.

The utility model discloses catalyst 23 in catalyst converter 12 adopts noble metal and rare metal material, and catalyst airspeed conservative range 500 ~ 30000/h^-1The corresponding optimization range is 2000-10000 h^-1The catalyst 23 is a granular or honeycomb shaping material, and has excellent performance and hydrogen content in the tail gas emission of fuel cell vehicles<1% PPM, and the high-efficiency catalyst can greatly improve the catalytic reaction result when being applied to the device.

The utility model discloses a small-size air blower 1 is connected air pipeline 2 and cyclone 5, takes the mode of forced injection air, increases the air injection volume, makes the air injection volume be far greater than the tail gas tolerance, dilutes tail gas by a wide margin, guarantees that the proportion of admitting air is hydrogen/air <1:25, and corresponding optimization range proportion is <1:200, can make hydrogen content in the tail gas fall below 2%, guarantees that no explosion danger in cyclone 5 cavity.

Referring to FIG. 3, as a further embodiment, the present invention wraps several turns of copper around the catalyst 12The coil 13 is connected to a circulating cold water system of the fuel cell, circulating cooling water flows in the coil 13 through the circulating fan 25, the catalyst 23 is heated by using the heat of the circulating water, the catalyst 23 can perform catalytic reaction in a temperature rising state, and the catalytic reaction effect is improved under the condition of not introducing an external heating source.

The following detailed description of the process of the fuel cell automobile exhaust dehydrogenation device of the present invention is made with reference to the accompanying drawing 1:

the first step, the air blower 1 is started, the air from the atmosphere is introduced into the cyclone separator 5 by force, the air flows into the cavity of the cyclone separator 5 tangentially through the radial opening connecting pipe at the bottom of the cyclone separator 5, meanwhile, the hydrogen-containing tail gas discharged from the fuel cell is received in the cavity, the hydrogen content in the tail gas is generally 1% -3%, 5% (volume fraction) at most, the hydrogen is part of hydrogen which does not participate in the reaction of the fuel cell, the tail gas flows into the cavity of the cyclone separator 5 tangentially through the radial opening connecting pipe at the top of the cyclone separator 5, and it should be pointed out that the tail gas discharge of the fuel cell is intermittent and pulse; therefore, the cavity of the cyclone separator 5 provides a buffer space for tail gas, the tail gas and air spirally flow forwards in the same direction in the cavity of the cyclone separator 5 at the moment to complete mixing, mixed gas is formed, meanwhile, water vapor is condensed into liquid water, the liquid water is stored at the bottom of the cavity of the cyclone separator 5 due to gravity, when the liquid water reaches a preset volume, the drain valve is automatically opened to drain water out of the system, the non-drainage end of the cyclone separator 5 is provided with a rupture disc, overpressure in the cavity of the cyclone separator 5 is prevented, and once overpressure occurs, the rupture disc explodes and discharges the liquid water. Preferably, the air inlet system can be connected with a fuel cell air supply system, so that an air fan 1 and a matched electrical appliance control system in the whole device are saved;

secondly, the coil 13 is introduced into a cooling circulating water system from the fuel cell; the temperature of the catalyst is raised to 5-95 deg.c, and the temperature raising range may be controlled to 5-20 deg.c.

Preferably, the temperature can be raised without using the coil 13 as the catalyst, and as shown in fig. 3, a pipeline 24 is used at the tail gas outlet, hot air discharged from the tail gas discharge side is led by a fan 25 to flow back to the inlet of the catalyst 12, and the temperature is raised by using the temperature-raised air after the catalytic combustion reaction as the catalyst.

Secondly, when the pressure in the cavity of the cyclone separator 5 reaches a preset value, the electromagnetic valve 7 on the hose 9 is opened, the mixed gas passes through the hose 9, the electromagnetic valve 7 and the subsequent silencing plate 8 to complete noise elimination flow, and the mixed gas is injected into the catalytic converter 12 through the quick connector 11;

in a third step, the gas mixture enters the chamber through the connection 15 of the catalytic converter 12, flows through a wall collector 20 and is collected through a gas distribution orifice 21, which is densely distributedThe circular steel plate with holes, then the tail gas enters the catalyst 23 layer through the silk screen 22, the oxygen and the hydrogen are catalyzed and reacted in the catalyst 23 layer to generate water, the water and the air continuously flow through the silk screen at the tail part of the catalyst 12 and the gas distribution plate under the push of the airflow, and the water and the air are discharged from the system through the opening at the tail part of the catalyst 12.

It should be further noted that the above-mentioned embodiments are only illustrative for the protection scheme of the present invention, so as to enable those skilled in the art to understand the present invention, and not to limit the present invention. Obvious changes, modifications, additions or substitutions within the scope and spirit of the present invention are all within the scope of the present invention.

Claims

1. The utility model provides a fuel cell automobile exhaust dehydrogenation device which characterized by: the catalytic converter comprises a tail gas pipe (3), an air pipe (2), a cyclone separator (5) and a catalytic converter (12), wherein the cyclone separator (5) is connected with the catalytic converter (12) through a hose (9), the tail gas pipe (3) is connected with a gas inlet at one end of the cyclone separator (5), and the air pipe (2) is connected with a bottom air inlet of the cyclone separator (5); an electromagnetic valve (7) is arranged between the hose (9) and the cyclone separator (5), and when the pressure in the cyclone separator (5) reaches a set value, the electromagnetic valve (7) is automatically opened;

a wall collector (20) is sequentially arranged in the shell cylinder (17) of the catalytic converter (12) and is used for leading the mixed gas to intensively pass through the catalyst (23); a gas distribution pore plate (21) is arranged for enabling the mixed gas to uniformly pass through the catalyst (23); the screen (22) is used for compacting the catalyst (23) and preventing the catalyst from being blown away by airflow; the catalyst (23) is used for carrying out catalytic reaction between oxygen and hydrogen to generate water, so that the aim of safe discharge is fulfilled; the tail end of the catalyst (23) is sequentially provided with a wire mesh (22) and a gas distribution pore plate (21) for compacting the tail end catalyst (23) to prevent the tail end catalyst from blowing; snap rings (19) are installed on the peripheries of the gas distribution pore plates (21) at the front end and the tail end of the wall collector (20) at the front end inside the catalytic converter (12), and the snap rings (19) are embedded in the inner wall of the cylinder body (17) and used for fixing the gas distribution pore plates (21) at the wall collector (20) and the tail end.

2. The fuel cell automobile exhaust dehydrogenation device according to claim 1, characterized in that: the main body of the cyclone separator (5) adopts a barrel-shaped structure, the arranged water discharging and air discharging side adopts an eccentric cone-shaped structure, and the upper part of an eccentric cone at the air discharging and water discharging end of the cyclone separator (5) is provided with a hole for connecting a hose (9) for exhausting; the tail part of the eccentric cone is provided with a hole for installing a drain valve for draining water.

3. The fuel cell automobile exhaust dehydrogenation device according to claim 1 or 2, characterized in that: the cyclone separator (5) is horizontally arranged, and the top of the cyclone separator is connected with the tail gas of the fuel cell and radially enters the gas; the air pipe is connected in the bottom mirror image direction, and air is radially introduced; the air is introduced in the mode, so that the tail gas and the air flow into the cavity of the cyclone separator (5) tangentially at the same time, and spiral flow is carried out in the cyclone separator (5) in the same direction.

4. The fuel cell automobile exhaust dehydrogenation device according to claim 1, characterized in that: the catalytic converter (12) adopts a cylindrical structure, one end of a cylindrical shell cylinder body (17) of the catalytic converter (12) is welded with a sealing plate (16), and a hole is formed in the sealing plate (16) for welding a joint (15); the other end of the cylinder (17) is provided with an opening for discharging air and water after catalytic reaction; the cylinder body (17) of the catalytic converter (12) adopts a segmented structure and is divided into two segments in the length direction, the middle part of the cylinder body (17) is disconnected and connected by a hoop (18) and used for installing and disassembling the internal device of the catalytic converter (12) and quickly disassembling and assembling and replacing the catalyst (23) in the catalytic converter (12).

5. The fuel cell automobile exhaust dehydrogenation device according to claim 1, characterized in that: the cyclone separator is characterized in that an electromagnetic valve (7) is installed between exhaust holes in the upper portion of an eccentric cone of the hose (9) and the cyclone separator (5), an acoustical panel (8) is installed at the rear end of the electromagnetic valve (7) and used for eliminating noise when high-speed gas flows, a quick connector (11) is installed at the tail end of the hose (9) and used for installing and disassembling the hose (9) and the catalyst (12), and a corrugated pipe (10) is installed in the middle of the hose (9) and used for compensating vibration and temperature difference displacement in the horizontal direction.

6. The fuel cell automobile exhaust dehydrogenation device according to claim 1, characterized in that: the device is provided with a rupture disk (4) which is arranged at the air inlet end of the cyclone separator (5) and used for discharging overpressure in the cyclone separator (5).

7. The fuel cell automobile exhaust dehydrogenation device according to claim 5, characterized in that: the sound-absorbing plate (8) is arranged in the hose (9).

8. The fuel cell automobile exhaust dehydrogenation device according to claim 1, characterized in that: one end of the whole fuel cell automobile tail gas dehydrogenation device is fixedly arranged on the fuel cell automobile chassis, the other end of the whole fuel cell automobile tail gas dehydrogenation device is connected to the fuel cell automobile chassis through a spring hook (14), and the other end of the spring hook (14) is freely arranged on a catalytic converter (12) and used for releasing vibration in the vertical up-down direction when the fuel cell automobile moves.

9. The fuel cell automobile exhaust dehydrogenation device according to claim 1, characterized in that: one end of the air pipe (2) is connected with the air fan (1), the other end of the air pipe is connected with the air inlet at the bottom end of the cyclone separator (5), and the air injection amount is increased by adopting a forced air injection mode, so that the air injection amount is far larger than the tail gas amount, the tail gas is greatly diluted, and the air inlet ratio of hydrogen to air is ensured to be 1: 25.

10. The fuel cell automobile exhaust dehydrogenation device according to claim 1 or 4, characterized in that: the catalyst (12) is wound with a plurality of circles of copperAnd the coil (13) is connected to a circulating cold air water system of the fuel cell, circulating cooling water flows in the coil (13) through a circulating fan (25) arranged, and the catalyst (23) is heated by utilizing the heat of the circulating water.