Process for reducing coal consumption in coal fired power plant with fluidized-bed drying

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United States of America Patent

PATENT NO 8661821
APP PUB NO 20110220744A1
SERIAL NO

13040016

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Abstract

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The present invention relates to a process for reducing coal consumption in coal fired plant with fluidized-bed drying, namely a fluidized-bed drying system is provided between a coal powder bunker as well as a weighing belt and a coal grinding mill of the prior coal fired boiler generating set, and superheated steam which has done partial work is extracted from an steam turbine and used as a drying medium, moisture contained in the coal powder is evaporated with sensible heat and latent heat of the superheated steam, water resulted from the condensation of the superheated steam is fed into a deaerator of the steam turbine via a condensate pump for recirculation. The present invention has advantages of reducing coal consumption and saving coal, recovering residual heat, reducing emission of carbon dioxide and adopting to the national industrial policy on energy saving and emission reduction.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL ENGINEERING TECHNOLOGY RESEARCH CENTER OF DRYING TECHNOLOGY & EQUIPMENT3 NORTH HESHUI ROAD XIGU LANZHOU GANSU PROVINCE 730060
TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO LTD730060 GANSU CITY OF LANZHOU PROVINCE XIGU DISTRICT HESHUI ROAD NO 3 LANZHOU CITY GANSU PROVINCE 730060

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dou, Yan Gansu, CN 12 35
Jiang, Yongzhong Gansu, CN 2 21
Shi, Jinwen Gansu, CN 4 23
Zhang, Maikui Gansu, CN 5 23
Zhao, Xu Gansu, CN 81 400

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