Patent ID: 8734549
Filing Date: 2014-05-27
Classification: C10J,C10K

Abstract:
1. A method for gasifying solid fuel with unified gas purification, comprising: feeding solid fuel and a gasifying agent to a first reactor for pyrolysis and gasification where said solid fuel is pyrolyzed in contact with a heat medium to generate char which is gasified by said gasifying agent, CO feeding residual char which is not gasified in said first reactor for pyrolysis and gasification, the heat medium which is lowered in temperature by the pyrolysis and gasification of said solid fuel, the active chemical which is less-activated through the reaction with said CO feeding the heat medium in said second reactor for char combustion heated to 1073K or more, the re-activated and activated chemicals and said gasified gas from said first reactor for pyrolysis and gasification to a third reactor for gasified gas purification where said chemicals function as catalyst to reform tar in said gasified gas at a reaction temperature which is lower than a reaction temperature in said second reactor for char combustion and higher than a reaction temperature of the first reactor for pyrolysis and absorbs H wherein said first reactor and said third reactor are vertically connected into an integral unit, and said active chemical and said heat medium pass through a particle passage arranged in said first reactor and said third reactor into said first reactor.