Hydrogen production method using selectively permeable membrane reactor and selectively permeable membrane reactor

摘要

In the present invention, a raw material gas is supplied from the inlet of a reaction tube, a mixed gas containing hydrogen, carbon monoxide and carbon dioxide is generated by reforming and shift reaction, and the permeated membrane is separated from the mixed gas. A method for producing hydrogen in which hydrogen separated in a pipe is recovered from a discharge port and other gas components that do not permeate the permselective membrane are discharged from an outlet, wherein the partial pressure of carbon dioxide at the outlet is (CO2) When the partial pressure of carbon monoxide is (CO) and the equilibrium constant of the disproportionation reaction of carbon monoxide at the temperature in the reaction tube is K, the value of α defined by the following formula is 0.4 to Hydrogen is produced under the conditions of 100. α = {(CO2) / (CO) 2} / K