Combined gas and steam turbine power station

Abstract

Abstract 1. Combined gas and steam turbine power station with a coal gasifier (4), with a coal preparation plant, with a coal mill (23, 24) and a coal drying device, with an air separation plant (5) connected upstream to the coal gasifier, with a heat exchanger plant (6) and gas purification plant (7) connected downstream to the coal gasifier on the gas side, with a pure gas line (8) leading to the combustion chamber (10) of the gas turbine (11) and a waste heat boiler (19) connected to the waste gas line (18) of the gas turbine, in which the sensible heat of the waste gas of the gas turbine (11) is drawn upon for drying the milled coal, characterised in that the coal is dried by direct contact with a gas which contains no oxygen or only a small proportion of oxygen, while waste gas of the gas turbine (11), to which the inert gas is added by mixing, is supplied as heating and drying medium to the milling-drying plant (22) and is brought into direct contact with the coal.

Inventors

• 👤 Ulrich Dr. Schiffers

Bibliographic Details