INTEGRATED DRYING OF FEEDSTOCK FEED TO INTEGRATED COMBINED-CYCLE GASIFICATION PLANT

摘要

In a combined cycle gasification plant, high-pressure fuel gas from the gasification unit (16) is heated prior to combustion, and is then used to dry the feedstock (12). The moist fuel gas from the drying operation is combusted to drive the turbine in a power plant (22). Alternatively, high-pressure inert gas such as nitrogen is heated in the gasification unit (16) and is then used to dry the coal feed (12). Some of the moist inert gas is recycled, and some of it is passed to the combustion turbine in power plant (22).