Patent ID: 7077878
Filing Date: 2006-07-18
Classification: C10B,C10J,C10K,Y02E,Y02P

Abstract:
1. A method for gasifying organic substances and substance mixtures, in connection with which the organic substances are split in a pyrolysis reactor through contact with a hot heat-carrying medium into a carbon-containing residue and pyrolysis gases; and the solid, carbon-containing residue is supplied to a firing stage and burned there, whereby at least proportions of the liberated heat are used for heating up the heat-carrying medium; and the pyrolysis gases, after adding a reactant steam in a second reaction zone, and with the use of at least a portion of the heat liberated in the firing stage, are after-heated through indirect heat exchange in such a way that a product with a high calorific value is obtained, comprising the steps of (a) separating the heat-carrying medium, upon exiting from the pyrolysis reactor, from the solid, carbon-containing residue in a separation stage and supplying it to a heating-up zone; (b) burning the solid, carbon-containing residue in a firing stage; (c) passing the hot exhaust gases of the firing stage into the heating-up zone through a fill of the heat-carrying medium, whereby they transfer a large part of their sensible heat to the heat-carrying medium; (d) extracting the heated-up heat-carrying medium from the heating-up zone into the second reaction zone designed in the form of a migrating bed reactor, where the mixture comprised of pyrolysis gases and reactant is heated up and converted into the product gas; and (e) recycling the heat-carrying medium into the pyrolysis reactor after passing through the second reaction zone.