Experimental Study on Ammonia Co-Firing with Coal for Carbon Reduction in the Boiler of a 300-MW Coal-Fired Power Station

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外文摘要：To reduce CO2 emissions from coal-fired power plants,the development of low-carbon or carbon-free fuel combustion technologies has become urgent.As a new zero-carbon fuel,ammonia(NH3)can be used to address the storage and transportation issues of hydrogen energy.Since it is not feasible to completely replace coal with ammonia in the short term,the development of ammonia-coal co-combustion technol-ogy at the current stage is a fast and feasible approach to reduce CO2 emissions from coal-fired power plants.This study focuses on modifying the boiler and installing two layers of eight pure-ammonia burn-ers in a 300-MW coal-fired power plant to achieve ammonia-coal co-combustion at proportions ranging from 20％to 10％(by heat ratio)at loads of 180-to 300-MW,respectively.The results show that,during ammonia-coal co-combustion in a 300-MW coal-fired power plant,there was a more significant change in NOx emissions at the furnace outlet compared with that under pure-coal combustion as the boiler oxy-gen levels varied.Moreover,ammonia burners located in the middle part of the main combustion zone exhibited a better high-temperature reduction performance than those located in the upper part of the main combustion zone.Under all ammonia co-combustion conditions,the NH3 concentration at the fur-nace outlet remained below 1 parts per million(ppm).Compared with that under pure-coal conditions,the thermal efficiency of the boiler slightly decreased(by 0.12％-0.38％)under different loads when ammonia co-combustion reached 15 t·h-1.Ammonia co-combustion in coal-fired power plants is a potentially feasible technology route for carbon reduction.

外文关键词：

Coal-fired boilerCoal mixing with ammoniaAmmonia-coal co-firingNitrogen oxide(NOx)CO2 reductionBoiler thermal efficiency

作者：

Qifu Lin、Wangping Sun、Haiyan Li、Yangjiong Liu、Yuwei Chen、Chengzhou Liu、Yiman Jiang、Yu Cheng、Ning Ma、Huaqing Ya、Longwei Chen、Shidong Fang、Hansheng Feng、Guang-Nan Luo、Jiangang Li、Kaixin Xiang、Jie Cong、Cheng Cheng

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作者单位：

Institute of Energy,Hefei Comprehensive National Science Center(Anhui Energy Laboratory),Hefei 230088,China

Anbang Technology Co.Ltd,Tongling 244000,China

Institute of Plasma Physics,Hefei Institute of Matter Science,Chinese Academy of Sciences,Hefei 230031,China

基金：

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaAcademy-Local Cooperation Project of the Chinese Academy of EngineeringNational Natural Science Foundation of ChinaNatural Science Foundation of Anhui ProvinceUniversity Synergy Innovation Program of Anhui Provinceindependent project of the Energy Research Institute of Hefei Comprehensive National Science Centerindependent project of the Energy Research Institute of Hefei Comprehensive National Science Centerindependent project of the Energy Research Institute of Hefei Comprehensive National Science Centerindependent project of the Energy Research Institute of Hefei Comprehensive National Science Centerindependent project of the Energy Research Institute of Hefei Comprehensive National Science Center

项目编号：

2023YFB40057002023YFB40057052023YFB4005702-032023-DFZD-01522071512208085QA29GXXT-2022025Anhui Energy Laboratory22KZZ52523KZS40222KZS30122KZS304

出版年：

2024

DOI：

10.1016/j.eng.2024.06.003

工程(英文)

CSTPCDEI

ISSN：2095-8099

年,卷(期)：2024.40(9)