High pressure gasification of coal using nitrogen dilution of waste gas from steam generator

摘要

In a process for the production of a fuel gas by the pressure gasification of carbon-containing fuels with oxygen and steam, wherein the oxygen is manufactured in a low temperature air separation plant and the steam is formed in a gas-heated steam boiler, and the waste gases produced in the steam boiler are subsequently expanded in an expansion turbine, the improvement which comprises admixing the nitrogen produced during the air separation with the waste gases before the expansion of the latter.