Method for co-producing hydrogen-rich synthesis gas through cooperation of chemical chain adsorption enhanced gasification and methane dry reforming

The invention provides a method for co-production of hydrogen-rich synthesis gas through cooperation of chemical chain adsorption enhanced gasification and methane dry reforming, and the method comprises the following steps: S1, adding biomass and sulfuric-acid residue oxygen carrier raw materials into a reactor, and introducing water vapor to carry out an adsorption enhanced gasification reaction to obtain synthesis gas with H2 and CO as main components; s2, after the gasification reaction is finished, methane gas is introduced into the reactor for a methane dry reforming reaction, and synthesis gas with H2 and CO as main components is obtained; s3, after the methane dry reforming reaction is finished, introducing water vapor into the reactor for reaction to obtain H2; and S4, after the hydrogen production reaction is finished, introducing air into the reactor, and carrying out a sulfuric-acid residue oxygen carrier regeneration reaction to obtain a sulfuric-acid residue oxygen carrier raw material. Accordin