COAL GASIFICATION COMPLEX Russian patent published in 2015 - IPC E21B43/295 E21B43/30 

FIELD: mining.

SUBSTANCE: complex includes an underground gas generator; with that, a discharge well is arranged in the centre of a gasified coal section, and supply wells are arranged around it along the periphery of the gasified coal section. Steam-generating equipment includes two spiral pipelines wound about a gas discharge pipe, the first one of which is made in its upper section, and the second one is made below the first one. A receiving hole of the first spiral pipeline is interconnected with a water source, and its outlet hole is interconnected via a connecting pipeline to the receiving opening of the second spiral pipeline. With that, the outlet hole of the second spiral pipeline, which is arranged at its upper point, is interconnected with a steam turbine by means of a steam line. Besides, the steam turbine outlet through a blasting air preparation assembly is interconnected with a supply well that is additionally interconnected with the steam line through a bypass steam line. The bypass steam line is passed through the blasting air preparation assembly with a possibility of ejection of its content; besides, on the surface there arranged is a drying assembly of carbon-containing solid wastes, which is interconnected with their disintegrator, the outlet of which is interconnected with the blasting air preparation assembly. As a CO₂ utilisation device, a carbon dioxide production line or a carbon dioxide accumulator having a possibility of its controlled discharge to the blasting air preparation assembly is used.

EFFECT: improving exhaust gas heat utilisation efficiency.

3 cl, 2 dwg