Patent ID: 9540579
Date: 2017-01-10
CPC Classifications: C10J,C10L

Claim:
1. A process for gasification of solid feed material to produce a syngas comprising: providing a plasma heated carbonaceous bed in a bottom section of a reactor vessel; feeding feed material into the reactor vessel to form a bed of deposited feed material on top of the carbonaceous bed in the bottom section; reacting the feed material with hot gases rising from the bottom section; forming, in a middle section of the reactor vessel, a syngas mixture containing a varying quantity of unreacted particles of the feed material; allowing the syngas mixture to rise into a top section of the reactor vessel including a conical part toward one or more syngas outlets in a roof of the reactor vessel; maintaining conditions in the vessel such that unreacted particles from the middle section are subjected to further reactions in a first, lower, part of the top section; and at least partially quenching, by injecting a quench fluid including water, steam, or a mixture thereof, through a plurality of quench fluid inlets in the roof into a quench zone in a second, upper part of the top section, at least some of the unreacted particles sufficiently to reduce the number of unreacted particles exiting the reactor vessel that are likely to be deposited on walls of external ductwork, wherein the quench zone is located in a cylindrical part between the conical part of the top section and the roof.