The utility model discloses a decoupling zero oxygen -enriched gas makes up and puts, include: fire burning furnace, fire burning furnace and be equipped with first feed inlet, oxygen -rich gas entry and exhanst gas outlet, take place the oxidation reaction contains carbon dioxide with the formation high temperature flue gas from oxygen -rich gas entry oxygen -rich gas who emits into and the solid fuel who emits into from first feed inlet in firing burning furnace, gasifier, gasifier are equipped with second feed inlet, oxygen boosting flue gas inlet and coal gas export, oxygen boosting flue gas inlet and exhanst gas outlet intercommunication, and the high temperature flue gas that contains carbon dioxide from the exhanst gas outlet exhaust carries out the electronation reaction in entering the gasifier, and the high temperature coal gas who generates in the gasifier discharges from the coal gas export. According to the utility model discloses a decoupling zero oxygen -enriched gas makes up and puts has avoided in the gasifier the local temperature too high and produce the problem that the slagging scorification blockked up furnace and take place, has improved the maneuverability of decoupling zero oxygen -enriched gas makes up and puts under high oxygen boosting concentration.