Title:
EFFICIENT, CLEAN AND FLEXIBLE COOPERATIVE COAL-FIRED POWER GENERATION SYSTEM AND OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/238322
Kind Code:
A1
Abstract:
An efficient, clean and flexible cooperative coal-fired power generation system and an operation method. The system comprises a coal economizer (2), an SCR denitration device (3) and a front coal economizer (4) which are sequentially arranged in a tail flue of a boiler (1) along the flue gas flow direction. A rear flue of the front coal economizer (4) is divided into two parallel separation flues, a first flue gas baffle (51) and an air preheater (53) are sequentially arranged on the separation flue on one side along the flue gas flow direction, and a second flue gas baffle (52), a first flow division coal economizer (54) and a second flow division coal economizer (55) are sequentially arranged on the separation flue on the other side along the flue gas flow direction; a water outlet of the coal economizer (2) is connected to a water supply inlet of a water-cooling wall, and a water inlet of the coal economizer (2) is connected to a water outlet of the front coal economizer (4) and to a water inlet of the front coal economizer (4) by means of a first water supply regulating valve (61); the water inlet of the front coal economizer (4) is connected to a water outlet of the first flow division coal economizer (54) and to a water outlet of a high-pressure heater group (7) by means of a second water supply regulating valve (62); a water inlet of the first flow division coal economizer (54) is connected to a water outlet of the second flow division coal economizer (55), and to the water outlet of the high-pressure heater group (7) by means of a third water supply regulating valve (63); a water inlet of the second flow division coal economizer (55) is connected to a water outlet of a water feeding pump (8) by means of a fourth water supply regulating valve (64); and a water inlet of the high-pressure heater group (7) is connected to a water outlet of the water feeding pump (8).
Inventors:
LIU MING (CN)
YAN JUNJIE (CN)
LIU JIPING (CN)
CHONG DAOTONG (CN)
XING QINAN (CN)
YAN JUNJIE (CN)
LIU JIPING (CN)
CHONG DAOTONG (CN)
XING QINAN (CN)
Application Number:
PCT/CN2021/078894
Publication Date:
December 02, 2021
Filing Date:
March 03, 2021
Export Citation:
Assignee:
UNIV XI AN JIAOTONG (CN)
International Classes:
B01D53/86; B01D53/56; F01K11/00; F01K27/00
Foreign References:
| CN111603928A | 2020-09-01 | |||
| CN111637442A | 2020-09-08 | |||
| CN107149873A | 2017-09-12 | |||
| CN109854313A | 2019-06-07 | |||
| CN208139316U | 2018-11-23 | |||
| CN103084064A | 2013-05-08 | |||
| US10197267B2 | 2019-02-05 | |||
| US7815881B2 | 2010-10-19 |
Attorney, Agent or Firm:
XI'AN CYDA INTELLECTUAL PROPERTY AGENCY (CN)
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