Novel equipment for producing hydrogen

Abstract

The invention relates to novel equipment for producing hydrogen. The equipment comprises a catalytic dry gas storage tank, a coking dry gas storage tank, an olefin comprehensive utilization device, a raw material gas compression device, an adiabatic hydrogenation reactor, a desulfurization reactor, a conversion device, a pressure protection device, a medium-temperature shift reactor and a tail-gas treatment tower; the olefin comprehensive utilization device is connected with the catalytic dry gas storage tank, the raw material gas compression device is connected with a catalytic dry gas outlet of the olefin comprehensive utilization device, the raw material gas compression device is connected with the coking dry gas storage tank, the adiabatic hydrogenation reactor is connected with a gas outlet of the raw material gas compression device, the desulfurization reactor is connected with a gas outlet of the adiabatic hydrogenation reactor, the conversion device is connected with a gas outlet of the desulfurization reactor, the medium-temperature shift reactor is connected with a conversion gas outlet of the conversion device, the raw material gas compression device is further connected with the tail-gas treatment tower through the pressure protection device, and the tail-gas treatment tower is further connected with a gas outlet of the medium-temperature shift reactor. The design provided by the invention has the advantages of a simple structure, easy manufacture, practicality and high efficiency.

Description

technical field [0001] The invention relates to the technical field of hydrogen production, in particular to a novel hydrogen production device. Background technique [0002] At present, the process options for hydrogen production include electrolysis of water to produce hydrogen, fossil fuel hydrogen production (coal, natural gas, light naphtha, heavy oil oxidation), biomass hydrogen production (biomass gasification, microbial catalysis), various chemical industry Process by-product hydrogen recovery. Refineries generally choose to use natural gas to produce hydrogen, catalytic dry gas to produce hydrogen or coking dry gas to produce hydrogen. However, when the above-mentioned hydrogen production process device is started, a raw material gas is selected as the raw material for hydrogen production. When the raw material fluctuates or is interrupted, the switching of the raw material cannot be realized, resulting in the shutdown of the device. The chain reaction leads to flu...

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Problems solved by technology

However, when the above-mentioned hydrogen production process device is started, a raw material gas is selected as the raw material for hydrogen production. When the raw material fluctuates or is interrupted, the switching of the raw material cannot be realized, resulting in the shutdown of the device. The chain reaction leads to fluctuations or even shutdown of the hydrogenation device, resulting in economic losses. bigger

At the same time, the existing hydrogen production equipment uses catalytic dry gas as the raw material for hydrogen production. The catalytic dry gas contains a large amount of olefins. The hydrogenation of olefins is a violent exothermic reaction. Theory shows that every 1% of olefins hydrogenation reaction releases The heat can increase the gas temperature of coking dry gas or catalytic dry gas by 20-30°C. In order to effectively discharge the heat of reaction, an isothermal hydrogenation reactor is required in the process of the device. The reactor uses hot water to absorb heat to generate Medium-pressure steam is used for heat removal, the device is complicated, the operation process is cumbersome, it is not easy to control, and the economic benefit is low

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