Title:
FLUE GAS WASTE HEAT AND CONDENSATE WATER RECOVERY SYSTEM FOR GAS-FIRED HOT WATER BOILER
Document Type and Number:
WIPO Patent Application WO/2022/206015
Kind Code:
A1
Abstract:
A flue gas waste heat and condensate water recovery system for a gas-fired hot water boiler, comprising: a screw heat pump unit (1), a heat exchanger (2), a variable frequency fan (3), a baffle plate demister (4), and a water replenishment tank (5). The screw heat pump unit (1) is connected to heating pipes (8, 9) and is also connected to heat exchange pipes (10, 11) of the heat exchanger (2); the heat exchanger (2) and the baffle plate demister (4) are disposed in a flue gas passage; the variable frequency fan (3) is disposed at the exit of the flue gas passage, and a bypass flue (13) is provided at the entrance of the flue gas passage; the bottom of the flue gas passage is provided with a condensate water pipe (12) connected to the water replenishment tank (5); the water replenishment tank (5) is provided with a feeding device (7); and a replenishment water pump (6) is connected to the replenishment water tank (5) and a heating pipe network water replenishment system. The system can recycle waste heat and reduce the corrosion of the flue by the condensate water in the flue gas. The condensate water can also be used for water replenishment of the heating pipe network. The system has a simple structure, is convenient to adjust, and can protect the environment.
Inventors:
GUAN GUANGCHENG (CN)
LIANG XUE (CN)
CHU HONGTAO (CN)
TANG XIAODONG (CN)
ZHAO MINGZENG (CN)
ZHANG ZHOUKANG (CN)
WANG CHAO (CN)
LIANG XUE (CN)
CHU HONGTAO (CN)
TANG XIAODONG (CN)
ZHAO MINGZENG (CN)
ZHANG ZHOUKANG (CN)
WANG CHAO (CN)
Application Number:
PCT/CN2021/136959
Publication Date:
October 06, 2022
Filing Date:
December 10, 2021
Export Citation:
Assignee:
QINGDAO ENN ENERGY CO LTD (CN)
International Classes:
F23J15/06; F24H9/00; F24H8/00; F25B30/02
Foreign References:
| CN113028645A | 2021-06-25 | |||
| CN103438575A | 2013-12-11 | |||
| CN103225834A | 2013-07-31 | |||
| CN108826688A | 2018-11-16 | |||
| CN106996571A | 2017-08-01 | |||
| KR101270872B1 | 2013-06-05 |
Attorney, Agent or Firm:
QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)
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