Hydrogen purification and carbon dioxide recycling and use device for methanol produced hydrogen production system

Abstract

The invention relates to a hydrogen purification and carbon dioxide recycling and use device for a methanol produced hydrogen production system. The device comprises a carbon dioxide reaction tank anda conversion gas conveying pipeline, wherein the carbon dioxide reaction tank is used for containing an alkali liquid; a hydrogen outlet is formed in the top of the carbon dioxide reaction tank; theconversion gas conveying pipeline is introduced into the bottom of the carbon dioxide reaction tank; a carbon dioxide reaction product collection mechanism is arranged at the bottom of the carbon dioxide reaction tank; the carbon dioxide reaction product collection mechanism comprises a partition plate which is fixed on the inner wall of the carbon dioxide reaction tank; a plurality of article through holes are formed in the partition plate; a collection disc is arranged below the partition plate; an insertion hole from which the collection disc is mounted or pulled out is formed in the side wall of the carbon dioxide reaction tank; the collection disc is in sealed matching with the insertion hole. By adopting the device, a conversion gas of the methanol produced hydrogen production systemis introduced into the bottom of the carbon dioxide reaction tank, then carbon dioxide can be sufficiently reacted with the alkali liquid, solid granules obtained from the reaction can be collected by the collection mechanism and can be stored in a common chemical storage mode, and thus the storage cost is low.

Description

technical field [0001] The invention belongs to the technical field of methanol hydrogen production equipment, and in particular relates to a hydrogen purification and carbon dioxide recycling device of a methanol hydrogen production system. Background technique [0002] The fuel hydrogen production system is a device that quickly prepares qualified hydrogen-rich mixed gas required for fuel cells from methanol, natural gas, liquefied petroleum gas, gasoline, diesel and other carbohydrates. Taking the methanol hydrogen production system as an example, the methanol hydrogen production system includes a methanol hydrogen production mechanism, a methanol supply mechanism and a water supply mechanism connected to the methanol hydrogen production mechanism. The methanol hydrogen production mechanism includes a raw material premixer, a vaporizer, a conversion devices, water-washed absorption towers and pressure swing adsorbers. [0003] The process flow of methanol hydrogen produc...

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Problems solved by technology

[0004] However, it is difficult to separate hydrogen and carbon dioxide by pressure swing adsorbers, and the storage cost of purified carbon dioxide is also relatively expensive.

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