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Waste heat recovery process in a cement production plant and cement production plant
Waste heat recovery process in a cement production plant and cement production plant
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机译：水泥生产厂和水泥生产厂的余热回收工艺
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摘要
The invention relates to a method for utilizing the waste heat of a plant for the production of cement and a corresponding plant, wherein the plant consists of a sequence of cyclones (1a, 1b, 2, 3) heat exchanger (1), at least one calciner (4, 5), a rotary kiln (7), a clinker cooler (8) and a tertiary air duct (9) for discharging warmed radiator air from the clinker cooler (8) in the calciner (4), and wherein process gas at the outlet of the calciner (5) and / or at the gas outlet of the first cyclone (1b) and / or at the rotary kiln inlet chamber (6) is fed to a first steam boiler (bypass boiler) (11) for heating water vapor for the purpose of subsequent conversion of heat into electrical energy and then in the second or third cyclone (1a, 2) of the heat exchanger (1) is returned. According to the invention, provision is made for removing tertiary hot air from the tertiary air line (9), feeding the tertiary air into a second steam boiler (tertiary air boiler) (20) for heating water vapor, and feeding the heated water vapor from the tertiary air boiler (20) to the bypass boiler (11 ) for further heating.
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