Reformation and optimization for waste heat recovery of rollingcylinder slag cooler in 490t/h CFB heatsupply unit

Huadian Technology ›› 2010, Vol. 32 ›› Issue (12): 40-43.

• 研究与开发 • Previous Articles Next Articles

Reformation and optimization for waste heat recovery of rollingcylinder slag cooler in 490t/h CFB heatsupply unit

GUO Zengliang1,YUAN Xiongjun2

1.Xuanhua Thermal Power Generation Corporation Limited of Hebei Construction & Investment Corporation Limited, Xuanhua 072100, China; 2.North China Power Engineering Corporation Limited, Beijing 100120, China

Received:1900-01-01 Revised:1900-01-01 Online:2010-12-25 Published:2010-12-25

Abstract

Abstract: Three feasible reformation schemes for waste heat utilization of the cylindrical slag cooler in 490 t/h CFB boiler of a power plant were put forward, and their economic efficiencies were analyzed and compared by using the equivalent enthalpy drop method. It is pointed out that the better economic efficiency for waste utilization can be obtained by using the cooling water with temperature as high as possible and its quantity as less as possible. Aiming at the characteristics of the heatsupply unit, a ‘combined switchovertype’ scheme for slag cooler waste utilization was put forward, and the contradiction between the highefficiency and safety of CFB slag cooler waste heat utilization in heatsupply unit was solved effectively. 


Key words: circulating fluidized bed boiler, cylindrical slag cooler, equivalent enthalpy drop method, combined switchover-type, waste heat recovery

GUO Zengliang;YUAN Xiongjun. Reformation and optimization for waste heat recovery of rollingcylinder slag cooler in 490t/h CFB heatsupply unit[J]. Huadian Technology, 2010, 32(12): 40-43.

[1]	YU Li, XU Jingjing, MA Lanfang, WANG Youtian. Case study on the integrated energy service project with newly installed heat pumps [J]. Integrated Intelligent Energy, 2022, 44(1): 72-79.
[2]	GUO Puwei, PENG Yue, DENG Jingmin, LI Bingfa, ZHOU Xing, HU Yun, GUO Haiqiang, WANG Jinxing. Feasibility study on the coupling application of flue gas waste heat recovery and energy storage technology [J]. Huadian Technology, 2021, 43(9): 62-68.
[3]	LI Na, YI Zuyao, BAI Yinlei. Review and prospect of advanced heat supply and intelligent power generation technologies [J]. Huadian Technology, 2021, 43(3): 31-39.
[4]	FANG Xu, PENG Xuefeng, ZHANG Kai, MA Jingbang, ZHAO Ruixiang, WANG Jinxing. Development of heating retrofit using waste heat from coal-fired CHP system cold end [J]. Huadian Technology, 2021, 43(3): 48-56.
[5]	CHEN Quanxi, FU Jiangtao. Analysis and prospect of key factors affecting the coupling of municipal sludge combustion and coal-fired power plants [J]. Huadian Technology, 2021, 43(10): 50-60.
[6]	MA Shuangchen，WU Kai，SUN Yao，LIU Chang，XING Haoru. Process schemes and fuzzy evaluation of moisture and waste heat recovery systems in coal-fired power plants #br# [J]. Huadian Technology, 2020, 42(3): 37-44.
[7]	ZHANG Fang，XIU Zhengping，FANG Jin. Economy calculation and application of lowlow temperature economizer [J]. Huadian Technology, 2019, 41(2): 65-72.
[8]	QUE Yanping,NING Yuqing. Feasibility research of periodical exhaust steam recovery system in coalfiled units [J]. Huadian Technology, 2019, 41(1): 62-63.
[9]	WANG Xin. Analysis on deep recovery and utilization of waste heat in gasfired power stations [J]. Huadian Technology, 2018, 40(12): 74-76.
[10]	MA Ji. Transformation and thermal economy analysis on 1000MW ultra supercritical unit with lowtemperature fuel economizer [J]. Huadian Technology, 2018, 40(10): 37-39.
[11]	BAI Yang. Large scale circulating fluidized bed boiler energy saving ultralow emission approach discuss [J]. Huadian Technology, 2017, 39(5): 17-19.
[12]	YANG Quan. Numerical simulation of combustion in a 40t/h circulating fluidized bed boiler [J]. Huadian Technology, 2017, 39(11): 10-12.
[13]	KONG Ming, ZHOU Zhengyi, LUO Zizhan. Inferiorlignitefired 600MW supercritical circulating fluidized bed boiler bunker bay arrangement design improvement [J]. Huadian Technology, 2017, 39(10): 30-31.
[14]	XU Ketao, FENG Qianwei, PEI Yukun, ZHANG Yang. Operation analysis of SNCR flue gas denitrification system of CFB boiler and its improvement [J]. Huadian Technology, 2016, 38(7): 70-73.
[15]	DU Jiajun. Ash deposition and air leakage control of circulating fluidized bed boiler tube type air preheater [J]. Huadian Technology, 2016, 38(5): 54-56.

Reformation and optimization for waste heat recovery of rollingcylinder slag cooler in 490t/h CFB heatsupply unit

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments