CN-224207989-U - Pretreatment device for ammonia pyrolysis hydrogen production

Abstract

The utility model discloses a pretreatment device for hydrogen production by ammonia pyrolysis, and belongs to the technical field of pretreatment devices. The utility model comprises a liquid storage tank assembly, a cover plate assembly, an electric heating rod, a filtering assembly and a base, wherein the liquid storage tank assembly comprises a liquid storage tank, a threaded groove is formed in the top of the liquid storage tank, the cover plate assembly comprises a cover plate, an external threaded pipe is fixedly connected to the bottom end face of the cover plate, the external threaded pipe is in threaded fit with the threaded groove, the electric heating rod is arranged on the top end face of the cover plate, the filtering assembly comprises a barrel body filled with a filter element, a threaded groove is formed in the top of the barrel body, a second external threaded pipe is in threaded fit with the threaded groove, a pressing plate is fixedly connected to the top end of the second external threaded pipe, and a connecting pipe is in threaded fit with the bottom of the barrel body. The utility model has the advantages of low energy consumption, high hydrogen purity, convenient operation, safety, reliability and the like through integrating direct heating, two-stage filtration and modularized design.

Inventors

• LI XINZHONG
• YANG YUBAO
• HUANG HAORAN
• LIU JINGJING
• LI XINHUA
• ZHANG YUN

Assignees

• 合肥中氢浩宇科技有限公司

Dates

Publication Date

20260508

Application Date

20250515

Claims (6)

1. 1. A pretreatment device for producing hydrogen by ammonia cracking, comprising: the liquid storage tank assembly (1), the liquid storage tank assembly (1) comprises a liquid storage tank (101), and a threaded groove (102) is formed in the top of the liquid storage tank (101); The cover plate assembly (2), the cover plate assembly (2) comprises a cover plate (201), an external thread pipe (202) is fixedly connected to the bottom end surface of the cover plate (201), and the external thread pipe (202) is in threaded fit with the thread groove (102); an electric heating rod (3), wherein the electric heating rod (3) is arranged on the top end surface of the cover plate (201); The filter component (4), filter component (4) are including staving (401) that fills the filter core, screw thread groove (402) have been seted up at the top of staving (401), screw thread groove (402) internal thread cooperation has second external screw thread pipe (403), the top fixedly connected with clamp plate (404) of second external screw thread pipe (403), the bottom cooperation of staving (401) has connecting pipe (405).
2. 2. The pretreatment device for producing hydrogen by ammonia pyrolysis according to claim 1, wherein four fixing blocks (103) are fixedly connected to the outer surface of the liquid storage tank (101).
3. 3. The pretreatment device for hydrogen production by ammonia pyrolysis according to claim 1, further comprising a base (11), wherein an electric push rod (12) is fixedly connected to the top end surface of the base (11), and the output end of the electric push rod (12) is fixedly connected to the bottom end surface of a fixed block (103).
4. 4. The pretreatment device for hydrogen production by ammonia pyrolysis according to claim 1, wherein the number of the filtering components (4) is two, two air outlet holes (203) and two through holes (204) are respectively formed in the cover plate (201), a mounting opening (205) is formed in the center of the cover plate (201), and the connecting pipe (405) is matched with the air outlet holes (203).
5. 5. The pretreatment device for hydrogen production by ammonia pyrolysis according to claim 4, wherein a feed pipe (8) and a pressure relief pipe (10) are respectively matched with the two through holes (204), and a second electromagnetic valve (9) is matched with each of the feed pipe (8) and the pressure relief pipe (10).
6. 6. The pretreatment device for hydrogen production by ammonia pyrolysis according to claim 1, wherein an air pipe (5) is arranged on the pressure plate (404) in a penetrating manner, a first electromagnetic valve (6) is matched on the air pipe (5), a three-way pipe (7) is matched on the first electromagnetic valve (6), the working end of the electric heating rod (3) is positioned in the liquid storage tank (101), and the working end of the electric heating rod (3) is arranged in the mounting port (205) in a penetrating manner.

Description

Pretreatment device for ammonia pyrolysis hydrogen production Technical Field The utility model relates to the technical field of pretreatment devices, in particular to a pretreatment device for hydrogen production by ammonia pyrolysis. Background The ammonia cracking hydrogen production is a process of generating hydrogen and nitrogen by high-temperature catalytic decomposition of ammonia, and compared with the traditional water electrolysis or natural gas reforming hydrogen production, the ammonia cracking has the advantages of high hydrogen content of ammonia, the pretreatment of the ammonia cracking hydrogen production is a key step for ensuring the efficient and safe reaction, and if water is contained in the ammonia, the catalyst poisoning or side reaction can be caused, so that a pretreatment device is needed. The ammonia cracking hydrogen producing technology is one process of decomposing liquid ammonia to obtain high purity hydrogen and is used widely in fuel cell, chemical synthesis and other fields. The existing pretreatment device has the following defects: 1. the heating efficiency is low, the traditional heating mode is separated from the reaction vessel, and the heat conduction loss is large, so that the energy consumption is high. 2. The filtering effect is insufficient, the residual ammonia or solid impurities in the pyrolysis gas are difficult to effectively remove by single-stage filtration, and the purity of the hydrogen is influenced. 3. The maintenance is inconvenient, the connection structure of the liquid storage tank and the cover plate is complex, the disassembly is difficult, and the pressure regulating mechanism is lacked, so that potential safety hazards exist. Disclosure of utility model The utility model aims to provide a pretreatment device for ammonia pyrolysis hydrogen production, which solves the problems of low heating efficiency, insufficient filtration and complex maintenance by integrating direct heating, double-stage filtration and modularized design. The utility model is realized by the following technical scheme: The utility model relates to a pretreatment device for hydrogen production by ammonia pyrolysis, which comprises a liquid storage tank assembly, a cover plate assembly, an electric heating rod, a filtering assembly and a base. The liquid storage tank assembly comprises a liquid storage tank, and a threaded groove is formed in the top of the liquid storage tank. The cover plate assembly comprises a cover plate, an external thread pipe is fixedly connected to the bottom end face of the cover plate, and the external thread pipe is in threaded fit with the thread groove. The electric heating rod is arranged on the top end surface of the cover plate. The filter component comprises a barrel body filled with a filter element, a thread groove is formed in the top of the barrel body, a second external thread pipe is matched with the thread groove in a thread way, a pressing plate is fixedly connected to the top end of the second external thread pipe, and a connecting pipe is matched with the bottom of the barrel body. Further, four fixing blocks are fixedly connected to the outer surface of the liquid storage tank. Further, an electric push rod is fixedly connected to the top end face of the base, and the output end of the electric push rod is fixedly connected to the bottom end face of the fixed block. Further, the filter component is provided with two air outlet holes and two through holes respectively, the center of the cover plate is provided with a mounting hole, and the connecting pipe is matched with the air outlet holes. Further, the two through holes are respectively matched with a feed pipe and a pressure relief pipe, and the feed pipe and the pressure relief pipe are respectively matched with a second electromagnetic valve. Further, the air pipe penetrates through the pressing plate, the first electromagnetic valve is matched with the air pipe, the three-way pipe is matched with the first electromagnetic valve, the working end of the electric heating rod is located in the liquid storage tank, and the working end of the electric heating rod penetrates through the mounting opening in a matched mode. The utility model has the following beneficial effects: 1. According to the utility model, the electric heating rod is directly embedded into the liquid storage tank and is directly contacted with the liquid ammonia for heating, so that the heat conduction loss of the traditional external heating is avoided, and the filter element is quickly fixed with the pressing plate through the thread groove. 2. According to the utility model, the liquid storage tank and the cover plate component are quickly connected with the external threaded pipe through the threaded groove, and the electric push rod of the base is combined to drive the lifting, so that the tank body can be lowered by one key, and the cover plate can be easily disassembled to replace the filter element o