Preparation of hydrogen from natural gas, by reaction with air and water vapor in a single reactor then high- and low-temperature shift reactions of carbon monoxide with water

摘要

Procedure for obtaining hydrogen from natural gas. Procedure for obtaining hydrogen from natural gas which comprises: (a) reacting natural gas with a mixture of air and water vapour, in a single reactor in order to obtain a gas which comprises H2 and CO2 (b) react the CO produced at high temperature with water vapour to obtain a gas which comprises H2 and CO2, and (c) react the CO which has not reacted in stage (b) at low temperature to water vapour to obtain a gas which comprises H2 and CO2, characterised because in stage (a) the natural gas, the air and the water vapour are fed simultaneously and react over the same catalyst and because the pressure used in stages (a) and (c) varies between 1 and 8 atm, as well as a H2 production plant to perform the procedure.