Title:
BOILER WET WATER RECOVERY SYSTEM UNDER LOW LOAD OF COAL-FIRED UNIT AND WORKING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/011903
Kind Code:
A1
Abstract:
Disclosed are a boiler wet water recovery system under a low load of a coal-fired unit and a working method. In the present invention, a portion of boiler wet water in a water storage tank is introduced into a water side inlet of a deaerator instead of the original four-stage extraction steam heating condensate. The mass and heat of said portion of the wet water is recovered and used. When the amount of wet water is large, a low-pressure heater may be shut down so as to use more wet water to heat the condensate, thus maximizing the mass and heat utilization, and greatly improving the operating economy of the unit under deep peak shaving and low load.
Inventors:
SHI HUI (CN)
QU JIE (CN)
XUE CHAONAN (CN)
ZHU PENGBO (CN)
GAO QING (CN)
GAO DENGPAN (CN)
QU JIE (CN)
XUE CHAONAN (CN)
ZHU PENGBO (CN)
GAO QING (CN)
GAO DENGPAN (CN)
Application Number:
PCT/CN2020/128441
Publication Date:
January 20, 2022
Filing Date:
November 12, 2020
Export Citation:
Assignee:
XIAN THERMAL POWER RES INST CO (CN)
International Classes:
F22D1/50; F22B37/00; F22D3/00
Foreign References:
| CN111678119A | 2020-09-18 | |||
| CN111664435A | 2020-09-15 | |||
| CN208967776U | 2019-06-11 | |||
| CN108870372A | 2018-11-23 | |||
| CN107631288A | 2018-01-26 | |||
| CN111256192A | 2020-06-09 | |||
| JP2000257806A | 2000-09-22 | |||
| JPH10169907A | 1998-06-26 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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