Patent ID: 8430939
Filing Date: 2013-04-30
Classification: C10J,C10K,Y02P

Abstract:
1. A method for multistage gasification, comprising the steps of: generating a first stage synthesis gas; mixing the first stage synthesis gas with a gaseous species to enhance homogeneity of the first stage synthesis gas; accelerating the homogenized synthesis gas; inducing cyclonic flow of the accelerated synthesis gas in a first stage of a chamber; and introducing radiant energy into the cyclonic flow of the accelerated synthesis gas at the first stage so as to preferentially heat particulates in the accelerated synthesis gas, wherein the step of introducing radiant energy includes using a radiant energy source in the middle of the cyclonic flow and using radiant energy re-radiated back from outer walls of the first stage of the chamber to heat the particulates, and the accelerated synthetic gas orbits the radiant heat source in a cyclonic flow pattern so as to maximize energy absorption by the particulates wherein the step of introducing radiant energy includes heating the outer walls of the first stage such that the outer walls soften allowing the particulates to adhere to an inner surface of the outer walls in the first stage and thereby separate from the accelerated synthesis gas.