FIELD: power industry.
SUBSTANCE: invention relates to gases cleaning in the blast-furnace unit. Method is suggested for thermal power generation from compressed cold air blow of the blast-furnace used with system of waste-heat turbine of blast-furnace gas in form of the turbine expander (20), containing at least one compressor (12) of compressed cold air blow connected with at least one air blow pre-heater (14), at that flow of the compressed blast-furnace gas exhausted by the blast-furnace (10) passes through the blast-furnace gas cleaning device (24) and is supplied in the turbine expander (20) connected with power consumer (34). From the cold air blow heat is extracted, it at least partially is transferred to the cleaned blast-furnace gas upstream the turbine expander (20). Besides, installation for thermal power extraction from the compressed cold air blow of the blast furnace is suggested, it contains device for heat extraction from the compressed cold air blow and its at least partial transfer to the cleaned blast-furnace gas upstream the turbine expander.
EFFECT: improved extraction of the thermal power from the compressed cold air blow of the blast furnace.
13 cl, 2 dwg
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