Explosion-proof ammonia decomposition hydrogen production device

Abstract

The utility model discloses an explosion-proof ammonia decomposition hydrogen production device. Comprising an electric furnace, a furnace pipe, a decomposition furnace pipe, a heat exchanger, a cooler, an ammonia gas inlet pipe and a gas outlet pipe, wherein the furnace pipe and the decomposition furnace pipe are arranged in the electric furnace; the heat exchanger and the cooler are arranged on the outer side wall of the electric furnace; an air inlet of the heat exchanger is communicated with the furnace pipe, an air outlet of the heat exchanger is communicated with the cooler and the decomposition furnace pipe, an access door is hinged to the anti-explosion wiring cover, an anti-explosion thermocouple is further arranged on the electric furnace, and a wire inlet and a wire outlet are formed in the two sides of the anti-explosion wiring cover respectively. A sealing ring, a gasket and a compression bolt are sequentially arranged in the wire inlet and outlet from inside to outside, a wire penetrates out of the explosion-proof wiring cover through the wire inlet and outlet and then is connected with the electric furnace, and an explosion-proof connector lug is arranged at the joint of the wire and the electric furnace. According to the utility model, explosion caused by electric sparks of electric appliance wiring can be prevented.

Description

Technical Field

[0001] This utility model relates to an ammonia decomposition hydrogen production device, and more particularly to an explosion-proof ammonia decomposition hydrogen production device. Background Technology

[0002] Ammonia decomposition hydrogen production unit is a device used to produce hydrogen. It mainly uses ammonia (NH3) as raw material and produces hydrogen and nitrogen through heating and decomposition under the action of a catalyst. Since the ammonia decomposition hydrogen production unit involves flammable and explosive hydrogen, electrical sparks generated by electrical components can easily cause an explosion. At the same time, excessively high furnace temperature may cause an overpressure explosion. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology by providing an explosion-proof ammonia decomposition hydrogen production device, thus solving the problem that electrical sparks during wiring can easily cause explosions.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an explosion-proof ammonia decomposition hydrogen production device, comprising an electric furnace, a decomposition furnace chamber and a furnace chamber installed inside the electric furnace, a heat exchanger and a cooler installed on the outer wall of the electric furnace, an ammonia inlet pipe connected to the inlet of the heat exchanger, an outlet pipe with a flow meter connected to the outlet of the cooler, an electric wire electrically connected to the electric furnace, and an explosion-proof wiring cover installed outside the electric wire. The inlet of the heat exchanger is connected to the furnace chamber, and the outlet is connected to the cooler and the decomposition furnace chamber respectively. An inspection door is hinged on the explosion-proof wiring cover, and an anti-sparking sealing strip is provided between the inspection door and the explosion-proof wiring cover. An explosion-proof thermocouple is also provided on the electric furnace. Inlet and outlet ports are respectively provided on both sides of the explosion-proof wiring cover. A sealing ring, a gasket, and a clamping bolt are arranged sequentially from the inside to the outside of the inlet and outlet ports. The electric wire passes through the sealing ring, gasket, and clamping bolt of the inlet and outlet ports from inside the explosion-proof wiring cover and is connected to the electric furnace. An explosion-proof terminal is provided at the connection between the electric wire and the electric furnace.

[0005] Furthermore, an isolation safety barrier is connected to the wires inside the wiring cover.

[0006] Furthermore, the inspection door is transparent and its surface is covered with an explosion-proof film.

[0007] Furthermore, the wire is externally covered with an explosion-proof flexible winding tube.

[0008] Furthermore, the electric furnace is also equipped with an explosion-proof pressure gauge.

[0009] Furthermore, the outer surface of the explosion-proof wiring cover is provided with an antistatic coating, which is applied by high-pressure electrostatic powder coating of marble.

[0010] The beneficial effects of adopting the above structure are as follows: The explosion-proof ammonia decomposition hydrogen production device provided by this utility model has no exposed cables for the electric furnace and thermocouple wiring. All of them are covered with explosion-proof hoses, which is more standardized, meets the requirements for hydrogen explosion protection, and is electrically explosion-proof. It is suitable for a wider range of occasions and can be used in explosion-proof hazardous chemical areas. Attached Figure Description

[0011] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the explosion-proof ammonia decomposition hydrogen production device described in this utility model.

[0013] Figure 2 This is a schematic diagram of the right side of the explosion-proof ammonia decomposition hydrogen production device described in this utility model.

[0014] Figure 3 This is a schematic diagram of the left side of the explosion-proof ammonia decomposition hydrogen production device described in this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the sealing ring, gasket, and clamping bolt described in this utility model.

[0016] The components include: 1. electric furnace; 2. furnace chamber; 3. heat exchanger; 4. cooler; 5. flow meter; 6. gas outlet pipe; 7. wire; 8. explosion-proof wiring cover; 9. inspection door; 10. explosion-proof thermocouple; 11. inlet and outlet ports; 12. sealing ring; 13. gasket; 14. clamping bolt; 15. explosion-proof connector. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] In response to the needs of ammonia decomposition hydrogen production devices, the designer of this utility model has innovatively proposed an explosion-proof ammonia decomposition hydrogen production device that can prevent explosions caused by electrical sparks from electrical wiring.

[0019] like Figures 1 to 4As shown, an explosion-proof ammonia decomposition hydrogen production device includes an electric furnace 1, a decomposition furnace chamber and a furnace chamber 2 disposed within the electric furnace 1, a heat exchanger 3 and a cooler 4 disposed on the outer wall of the electric furnace 1, an ammonia inlet pipe connected to the inlet of the heat exchanger 3, an outlet pipe 6 with a flow meter 5 connected to the outlet of the cooler 4, an electric wire 7 electrically connected to the electric furnace 1, and an explosion-proof wiring cover 8 disposed outside the electric wire 7. The inlet of the heat exchanger 3 is connected to the furnace chamber 2, and the outlet is connected to the cooler 4 and the decomposition furnace chamber respectively. The explosion-proof wiring cover 8 is hinged to... The electric furnace 1 is equipped with an inspection door 9, and an anti-spark sealing strip is provided between the inspection door 9 and the explosion-proof wiring cover 8. The electric furnace 1 is also equipped with an explosion-proof thermocouple 10. The explosion-proof wiring cover 8 is provided with inlet and outlet ports 11 on both sides. The inlet and outlet ports 11 are provided with a sealing ring 12, a gasket 13 and a clamping bolt 14 in sequence from the inside to the outside. The wire 7 passes through the sealing ring 12, gasket 13 and clamping bolt 14 of the inlet and outlet ports 11 from the inside of the explosion-proof wiring cover 8 and is connected to the electric furnace 1. An explosion-proof connector 15 is provided at the connection between the wire 7 and the electric furnace 1.

[0020] An isolation safety barrier is connected to the wire 7 inside the junction box.

[0021] The inspection door 9 is transparent and covered with an explosion-proof film to prevent the inspection door 9 from breaking and flying.

[0022] The wire 7 is externally covered with an explosion-proof flexible winding tube.

[0023] The electric furnace 1 is also equipped with an explosion-proof pressure gauge.

[0024] The outer surface of the explosion-proof wiring cover 8 is provided with an antistatic coating, which is made by high-pressure electrostatic spraying of marble powder.

[0025] During operation, the raw material ammonia gas and the high-temperature hydrogen gas from furnace chamber 2 exchange heat through heat exchanger 3. The temperature of the raw material gaseous ammonia gas rises from room temperature to about 300 degrees Celsius, and then enters the decomposition furnace. The decomposition furnace chamber is installed in electric furnace 1 and contains a catalyst. The reaction temperature of the decomposition furnace chamber is 800 degrees Celsius. At high temperature, the ammonia gas decomposes into a nitrogen-hydrogen mixture under the action of the catalyst. The high-temperature hydrogen gas from furnace chamber 2, which is about 500 degrees Celsius, drops to below 100 degrees Celsius after passing through heat exchanger 3. It is then further cooled to room temperature by cooler 4 and then sent to the downstream end through flow meter 5. At the same time, explosion-proof wiring cover 8 and explosion-proof wiring head 15 prevent the generated electric sparks from coming into contact with the raw material ammonia gas and hydrogen gas escaping from the device.

[0026] The beneficial effects of adopting the above structure are as follows: The explosion-proof ammonia decomposition hydrogen production device provided by this utility model has no exposed cables for the electric furnace and thermocouple wiring. All of them are covered with explosion-proof hoses, which is more standardized, meets the requirements for hydrogen explosion protection, and is electrically explosion-proof. It is suitable for a wider range of occasions and can be used in explosion-proof hazardous chemical areas.

[0027] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An explosion-proof ammonia decomposition hydrogen production device, comprising an electric furnace, a furnace chamber and a decomposition furnace chamber containing a catalyst disposed within the electric furnace, a heat exchanger and a cooler disposed on the outer wall of the electric furnace, an ammonia inlet pipe connected to the inlet of the heat exchanger, an outlet pipe with a flow meter connected to the outlet of the cooler, an electric wire electrically connected to the electric furnace, and an explosion-proof wiring cover disposed outside the electric wire, wherein the inlet of the heat exchanger is connected to the furnace chamber, and the outlet is connected to the cooler and the decomposition furnace chamber respectively, characterized in that, The explosion-proof wiring cover is hinged with an inspection door, and an anti-sparking sealing strip is provided between the inspection door and the explosion-proof wiring cover. The electric furnace is also equipped with an explosion-proof thermocouple. The explosion-proof wiring cover has inlet and outlet ports on both sides. The inlet and outlet ports are provided with a sealing ring, a gasket, and a clamping bolt in sequence from the inside to the outside. The wire passes through the sealing ring, gasket, and clamping bolt of the inlet and outlet ports and then connects to the electric furnace. An explosion-proof connector is provided at the connection point between the wire and the electric furnace.

2. The explosion-proof ammonia decomposition hydrogen production device as described in claim 1, characterized in that: An isolation safety barrier is connected to the wires inside the junction box.

3. The explosion-proof ammonia decomposition hydrogen production device as described in claim 1, characterized in that: The inspection door is transparent and covered with an explosion-proof film.

4. The explosion-proof ammonia decomposition hydrogen production device as described in claim 1, characterized in that: The wire is covered with an explosion-proof flexible winding tube.

5. The explosion-proof ammonia decomposition hydrogen production device as described in claim 1, characterized in that: The electric furnace is also equipped with an explosion-proof pressure gauge.

6. The explosion-proof ammonia decomposition hydrogen production device as described in claim 1, characterized in that: The outer surface of the explosion-proof wiring cover is provided with an antistatic coating, which is applied by high-pressure electrostatic spraying of marble powder.

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