Experimental study on waste heat recovery performance of flue gas of ceramic membranes

CHENG Chao; ZHANG Heng; CHEN Haiping

doi:10.19666/j.rlfd.202009011

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Experimental study on waste heat recovery performance of flue gas of ceramic membranes

Thermal Power Generation Vol. 50, Issue 2, Pages: 62-67(2021)

更新时间：2025-09-28

- Experimental study on waste heat recovery performance of flue gas of ceramic membranes
- 作者机构：
  
  华北电力大学国家火力发电工程技术研究中心
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202009011
  CLC： TK115;TM621
- Published：2021
- 稿件说明：
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CHENG Chao, ZHANG Heng, CHEN Haiping. Experimental study on waste heat recovery performance of flue gas of ceramic membranes[J]. Thermal Power Generation, 2021, 50(2): 62-67.
DOI：

CHENG Chao, ZHANG Heng, CHEN Haiping. Experimental study on waste heat recovery performance of flue gas of ceramic membranes[J]. Thermal Power Generation, 2021, 50(2): 62-67. DOI： 10.19666/j.rlfd.202009011.

摘要

火电厂排放的烟气中含有大量的水蒸气和余热

采用陶瓷膜回收烟气中的水分及热量是一条有效途径

具有一定的经济性和社会效益。本文采用选择层孔径为30、50 nm的陶瓷膜进行烟气余热回收实验

分析了烟气温度、烟气流量、冷却水温度和冷却水流量对不同孔径陶瓷膜热量回收性能的影响。结果表明:50 nm陶瓷膜管热量回收性能优于30 nm陶瓷膜管;30、50 nm孔径的陶瓷膜管的热回收量和热回收率均随烟气温度、烟气流量和冷却水流量的增加而增大

随冷却水温度的升高而降低;冷却水温度达到30℃时

热回收量下降幅度较大。该研究结果对于陶瓷膜在火电厂烟气余热回收中的应用具有指导意义。

Abstract

The flue gas emitted from thermal power plants contains a large amount of water vapor and waste heat. Using ceramic membranes to recover moisture and heat in the flue gas is an effective way

which has certain economic and social benefits. In this paper

the waste heat recovery performance from flue gas with ceramic membrane tubes of different pore sizes(30 nm

50 nm) was experimentally studied. The effects of flue gas temperature

flue gas flow rate

cooling water temperature and cooling water flow rate on the heat recovery performance were analyzed. The results show that

the heat recovery performance of the 50 nm ceramic membrane tube is better than that of the 30 nm ceramic membrane tube. The recovered heat flux and heat recovery rate of ceramic membrane tubes with 30 nm and 50 nm pore diameters increase with the flue gas temperature

flue gas flow rate and cooling water flowrate

and decrease with the increase of cooling water temperature. When the cooling water temperature reaches 30 ℃

the recovered heat flux decreases greatly. The research result has theoretical guiding significance for the application of ceramic membranes in flue gas waste heat recovery in thermal power plants.

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