Device for preparing high-pressure hydrogen by using metal hydrides

A high-pressure hydrogen and hydride technology, applied in hydrogen production, energy input, etc., can solve problems such as lack of relevant patents, and achieve the effect of ensuring system safety and simple structure

Active Publication Date: 2015-06-03
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, the patents for metal hydride hydrogen compressors are mainly concentrated on alloy materials for hydrogen compressors, such as Chinese patent CN101429606A, but t...

Method used

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  • Device for preparing high-pressure hydrogen by using metal hydrides
  • Device for preparing high-pressure hydrogen by using metal hydrides
  • Device for preparing high-pressure hydrogen by using metal hydrides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The reaction bed 1 is designed as a stainless steel tank, and the inner wall of the tank is made into a structure with six heat exchange fins 9. The heat exchange fins 9 are straight and long in the axial direction of the tank, and are evenly distributed at intervals of 60° in the circumferential direction. , the cross-section of the heat exchange fin 9 is rectangular, such as figure 2 (a) and 2(b). This structure can increase the heat exchange area, and conduct the heat to the hydrogen storage alloy inside the tank in time to the maximum extent, which is beneficial to the hydrogen discharge process, and conducts the heat generated by the hydrogen storage alloy inside the tank in time during the hydrogen absorption process. , which is conducive to the hydrogen absorption process.

[0034] When the hydrogen storage alloy adopts Ti-Mn-based metal hydride, during the heating and pressurizing process, at 80°C, after about 120 minutes, the internal pressure of the compress...

Embodiment 2

[0036] In this embodiment, the heat exchanging fins 9 are replaced with triangular heat exchanging fins, the hydrogen storage alloy is replaced with a Ti-Cr-based metal hydride, and the other components are the same as in Embodiment 1.

[0037] The reaction bed 1 is designed as a stainless steel tank, and the inner wall of the tank is made into a structure with 8 heat exchange fins 9. The heat exchange fins 9 are straight and long in the axial direction of the tank, and are evenly distributed at intervals of 45° in the circumferential direction. , the cross-section of the heat exchange fin 9 is an equilateral triangle, such as image 3 (a) and 3(b). This structure can increase the heat exchange area, and conduct the heat to the hydrogen storage alloy inside the tank in time to the maximum extent, which is beneficial to the hydrogen discharge process, and conducts the heat generated by the hydrogen storage alloy inside the tank in time during the hydrogen absorption process. ,...

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Abstract

The invention discloses a device for preparing high-pressure hydrogen by using metal hydrides and belongs to the technical field of static compression of hydrogen. The device comprises a control part, a heating loop, a cooling loop, a reaction bed, a circulation water pump and a gas pipeline, wherein the heating loop and the cooling loop are wound around the outer wall of the reaction bed at intervals and are connected to the circulation water pump respectively; the gas pipeline is arranged in a reaction bed body; the control part is connected to the gas pipeline of the device. By virtue of the device, the hydrogen is pressurized from 0.2MPa to 20MPa due to the adoption of AB2 type metal hydride such as Ti-Mn base and Ti-Cr base; the pressurization ratio reaches 100; the purity of the output gas reaches 99.999%; the accurate and continuous regulation of the hydrogen output pressure can be implemented by temperature/pressure double alarm control manners of the system, thereby ensuring that the device works under the safe temperature/pressure range and ensuring the safety of the system. The device also has the advantages that the structure is simple, the noise is avoided, the vibration is also avoided, and low-quality waste heat can be utilized.

Description

technical field [0001] The invention belongs to the technical field of static compression of hydrogen, in particular to a device for preparing high-pressure hydrogen by utilizing metal hydrides. Background technique [0002] At present, due to the deepening of the energy crisis and the deteriorating environment, the research and utilization of hydrogen energy has become a hot issue in the field of scientific research. Hydrogen has the advantages of high calorific value per unit mass, wide range of sources, clean and efficient, and renewable, and is widely used in various fields. Since hydrogen sources with different pressures are required in different fields, hydrogen compressors with different output requirements must be developed. [0003] Traditional mechanical hydrogen compressors rely on oil to lubricate and seal. Oil in the exhaust is inevitable. High temperature and long-term operation will cause the lubricant to decompose, which will corrode compressor parts; Quant...

Claims

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Application Information

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IPC IPC(8): C01B3/02
CPCY02P20/129
Inventor 姬江峰王树茂李志念
Owner GRIMAT ENG INST CO LTD
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