OPERATIONAL METHOD FOR COAL GASIFICATION REACTION FURNACE AND COAL GASIFICATION REACTION FURNACE

摘要

Disclosed is an operational method for a coal gasification reaction furnace comprising a lower reaction vessel and an upper reaction vessel communicating with each other, which includes the following steps: a step wherein carbon raw material, oxygen gas and water vapour are supplied inside the lower reaction vessel; a step wherein coal is supplied using a coal nozzle, and water vapour is supplied using a water nozzle, inside the upper reaction vessel; a step wherein the coal in the upper reaction chamber is reacted at a temperature of 950°C or higher by the high-temperature gas produced in the lower reaction vessel and a synthesis gas containing at least hydrogen gas and carbon monoxide gas is produced; and a step wherein the mass flow rate of the coal supplied by the coal nozzle and/or the mass flow rate of the water vapour supplied by the water vapour nozzle are adjusted such that the ratio of mass flow rate (Qs) of the water vapour content of the synthesis gas and mass flow rate (Qc) of the carbon supplied to the upper reaction vessel, Qs/Qc, is 1.0-1.5.