METHOD TO USE COAL IN COMBINED CYCLE PLANT BASED ON PYROLYSIS PROCESS

摘要

FIELD: power engineering.SUBSTANCE: cycle air is heated in two stages: after leaving the compressor, cycle air is supplied for heating into a high-temperature high-pressure heater, then it is additionally heated to rated temperature directly prior to arrival of the heated cycle air into a gas turbine. Fuel for a steam and air boiler with the high-temperature air heater is a solid pyrolysis product - semi-coke. Pyrolysis gas is used to additionally heat air directly upstream the gas turbine. Vaporous products of liquid fraction of pyrolysis products are used for heating of source coal to rated temperature of pyrolysis process in a pyrolysis reactor. Pyrolysis products are exposed to treatment from compounds of sulfur and nitrogen directly in the pyrolysis reactor.EFFECT: expanded sphere of application of combined cycle plants, their improved cost-effectiveness and environmental compatibility.1 dwg