METHOD AND APPARATUS FOR COOLING HOT GASES AND FLUIDIZED SLAG IN ENTRAINED FLOW GASIFICATION

摘要

The invention relates to a method for cooling hot crude gas and slag from entrained flow gasification of liquid and solid combustibles at crude gas temperatures ranging from 1,200 to 1,800 .degree.C and at pressures of up to 80 bar in a cooling chamber dispos ed downstream of the gasification reactor by injecting water, by which the cooling water introduc ed for cooling into the cooling chamber is distributed, with a portion being nozzled, finely dispersed, into to cooling chamber designed to be a free space and another portion being fed at the bottom into an annular gap provided between the pressure-carrying tank wall and an incorporated metal apron for protecting said pressure-carrying tank wall, this portion of the cooling water flowing upward in the annular gap and trickling down the inner side of the metal apron in the form of a water film and to an apparatus for carrying out the method in whic h a metal apron (1.3) is incorporated into the cooling chamber (1) of an entrained flow gasification reactor (2) with nozzles (1.1) in such a manner that an annular space (1.8) is formed between the pressure jacket (1.6) and the metal apron (1.3), cooling water flowing upwar d through said annular space, said cooling water being supplied through a port (1.5) and running down the inner side of the metal apron (1.3) in the form of a water film (1.7).