Patent ID: 6767375
Filing Date: 2004-07-27
Classification: C10J,Y02P

Abstract:
Apparatus for producing synthesis gas by pyrolysis of a biomass feed transported through a closed reactor coil in a reactor vessel comprising:a) a vertically extending cylindrical reactor vessel having a top portion and a bottom portion and a cylindrical sidewall therebetween, said top portion including a hood and a flue vent; b) a helical reactor coil disposed vertically in said vessel below said top portion, said reactor having an input end and an output end; c) said input end of said reactor coil disposed below said top portion and said output end disposed below said bottom portion; d) a burner for providing the heat for pyrolysis disposed in Said bottom portion of said vessel e) a generally cylindrical heat shield disposed generally concentrically within said coil and above said burner in at least the upper one-third of said vessel, the end of said cylindrical heat shield disposed toward said burner being closed; f) whereby said heat shield defines a zone of convective heating for said coil by the heat from said burner in the region where said coil is adjacent said shield, and a radiant heating zone in the region where said coil is directly exposed to the heat produced by said burner.