Process for reducing coal consumption in coal fired power plant with fluidized-bed drying
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United States of America Patent
Stats
-
Mar 4, 2014
Grant Date -
Sep 15, 2011
app pub date -
Mar 3, 2011
filing date -
Mar 9, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NATIONAL ENGINEERING TECHNOLOGY RESEARCH CENTER OF DRYING TECHNOLOGY & EQUIPMENT | 3 NORTH HESHUI ROAD XIGU LANZHOU GANSU PROVINCE 730060 | |
TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO LTD | 730060 GANSU CITY OF LANZHOU PROVINCE XIGU DISTRICT HESHUI ROAD NO 3 LANZHOU CITY GANSU PROVINCE 730060 |
International Classification(s)

- [Classification Symbol]
- [Patents Count]
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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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 4, 2025 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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