Process for cooling a dust-laden raw gas from the gasification of a solid carbon-containing fuel in a reactor under pressure and plant for carrying out the process

摘要

In a process for cooling a dust-laden raw gas from the gasification of a solid carbon-containing fuel in a pressurised reactor, in which the gas from the reactor is introduced into a quench section to which is applied a quenching medium for direct cooling and thence into cooling section included in a water-vapour circuit and extracted therefrom, in order to improve the cooling after the application of the quenching medium, the gas is extracted from the reactor into a quench pipe with a smaller cross-section than that of the reactor, the gas emerging from the outlet end of the quench pipe is deflected substantially through 180 DEG and taken against the flow of the gas in the quench pipe through a cooling section surrounding said quench pipe.