Patent ID: 8562698

Claim:
An apparatus for production of raw gas that contains CO and H 2 , by means of gasification of fuel that contains ash, with gas that contains oxygen, at temperatures above the melting temperature of the ash, comprising: a gasification reactor; a subsequent gas cooling space; a transition channel between the gasification reactor and the gas cooling space, the transition channel having a diameter that is less than a diameter of the reactor and the cooling space; and separate installations in the form of a plurality of cooling pipes provided in the transition channel, the installations being adapted to reduce or prevent spin of process gases, the installations passing through only a part of the cross-sectional area of the transition channel, to form a narrowed interior that is free of installations, the lengths of the installations being between 0.5 and 4 times the diameter of the transition channel, wherein the transition channel is equipped, at its lower end, in the direction of gravity, with a constriction having a drip edge, wherein the constriction is additionally surrounded, at the transition channel, by a mixing pipe having a free edge at a bottom end thereof, to form an additional mixing space, and wherein a resulting expansion angle between the drip edge and the free edge of the mixing pipe lies in the range of 10° to 30°.