Equipment type selection method of hydrogen production and hydrogenation station system

Abstract

The invention relates to an equipment type selection method of a hydrogen production and hydrogenation station system. The method comprises type selection of a hydrogen production device, a first-stage compressor, a second-stage compressor, a first-stage hydrogen storage device and a second-stage hydrogen storage device. The equipment type selection method is established based on scientific calculation and analysis and is suitable for a hydrogen production and hydrogenation integrated hydrogenation station and a conventional hydrogenation station. The hydrogen production scale and the storage scale of the hydrogenation station can be fully and reasonably configured, and the hydrogenation requirements of the hydrogenation peak period and the hydrogenation valley period can be met at the same time; the frequency of frequent start and stop of the compressors can be reduced, the maintenance cost of the compressors is reduced, and the cost of the second-stage hydrogen compressor is reduced by 20-30% under the condition of the same output treatment capacity; and under the condition that an external long tube trailer supplies hydrogen, the hydrogen utilization rate can be increased by about 10%.

Description

technical field [0001] The invention belongs to the field of hydrogen refueling station design, and in particular relates to an equipment type selection method for a hydrogen production and refueling station system. Background technique [0002] In 2020, my country made it clear at the United Nations General Assembly that the CO 2 Emissions strive to reach a peak before 2030 and achieve "carbon peaking"; strive for CO2 emissions before 2060 2 Emissions will no longer increase, and "carbon neutrality" will be achieved through afforestation, energy conservation and emission reduction, and industrial adjustment. Against this background, the development of the hydrogen energy industry has received great attention, especially in the field of transportation energy. Although the government has given great policy support and subsidies, the development is still slow. The reason is that in addition to the high production cost and sales price of fuel cell vehicles, the scarcity of su...

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Problems solved by technology

In-station hydrogen production usually adopts electrolytic water hydrogen production and natural gas hydrogen production processes. The advantage of in-station hydrogen production is that it can save hydrogen transportation costs and reduce the volume of hydrogen storage tanks in hydrogen refueling stations. Continuous, so hydrogen production equipment needs to be started and stopped frequently, especially the compressor, which is complex and difficult to operate and manage

[0005] The compressor is an important equipment in the hydrogen refueling station, and its cost accounts for 30% of the overall compressor construction cost. Because the life of the diaphragm of the commonly used diaphragm compressor is related to the frequency of starting, the instability of the downstream filling market has led to compression The discontinuous operation of the machine greatly increases the maintenance cost

Moreover, due to the fact that the inlet pressure of the compressor in the hydrogenation station gradually decreases during the working process, the low-pressure working condition will be considered when selecting the compressor, and the processing capacity of the selected equipment is relatively large, and the equipment investment increases.

[0006] Even if the off-station hydrogen production uses a long-tube trailer to transport the hydrogen to the hydrogen refueling station, a compressor is still needed. At the same time, the hydrogen utilization rate of the long-tube trailer is not high. Generally, the hydrogen refueling station can only use 5MPa and then stop using it. not tall

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