Energy-saving type on-site hydrogen production and refueling station system

Abstract

The invention discloses an energy-saving on-site hydrogen production and hydrogenation station system, which belongs to the field of hydrogen energy utilization, and is characterized in that by combining ammonia decomposition on-site hydrogen production with a hydrogen refueling station and optimizing system configuration, energy conservation and consumption reduction in a hydrogen production and hydrogenation process are realized, so that the storage and transportation cost of hydrogen is reduced. Wherein the high-pressure hydrogen cooling device is combined with the filling device, hydrogen is cooled after throttling of the filling device, the temperature requirement of a cold source is lowered, and therefore the refrigeration cycle COP is improved to save power consumption; cold energy required by the cooling device comes from ammonia refrigeration circulation, flexible adjustment of the refrigeration quantity can be achieved, and the system energy efficiency is improved by combining double-effect absorption refrigeration circulation and fully utilizing the tail gas heat value in the hydrogen production process; a liquid ammonia pump is adopted to realize a hydrogen production process under a high-pressure condition, and energy consumption of hydrogen purification and hydrogenation sections is saved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen energy utilization, and in particular relates to an energy-saving on-site hydrogen production and hydrogenation station system. Background technique [0002] Traditional hydrogen refueling stations mostly use long-tube trailers for hydrogen transportation, which has high storage, transportation and turnover costs. Using on-site hydrogen production methods (such as liquid ammonia, methanol or methane, etc.) can greatly reduce the hydrogen storage and transportation costs of hydrogen refueling stations. economical. In addition, the hydrogen compression process is the main energy source of the hydrogen refueling station, and increasing the pressure level of hydrogen production as much as possible will also help reduce the energy consumption of the subsequent process. [0003] In traditional hydrogen refueling stations, high-pressure hydrogen needs to be cooled to -40°C before hydrogen refueling. Th...

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Problems solved by technology

[0004] Therefore, the current promotion of traditional hydrogen refueling stations is mainly limited by the economy, which is mainly reflected in the high cost of hydrogen storage and transportation, and the high energy consumption level of hydrogen refueling stations , which limits the development of hydrogen refueling stations and hydrogen energy to a certain extent

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