Field assessment of straw pellet combustion in improved heating stoves in rural Northeast China  

作　　者：Yafei Liu Zhimin Li Emily Floess You Zhang Nicholas Lam Sylvester K.Mawusi Prabin Shrestha Xinghua Li Chunyu Xue Guangqing Liu 

机构地区：[1]Biomass Energy and Environmental Engineering Research Center,College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China [2]State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing 100875,China [3]Department of Civil,Construction,and Environmental Engineering,North Carolina State University,Raleigh,NC 27695-7103,USA [4]Schatz Energy Research Center,Humboldt State University,Arcata,CA 95521,USA [5]School of Space and Environment,Beihang University,Beijing 100191,China

出　　处：《Journal of Environmental Sciences》2023年第5期295-307,共13页环境科学学报（英文版）

基　　金：supported by the Ministry of Science and Technology of China(No.2017YFC0211400)and the China Office of Clean Air Asia.

摘　　要：Straw pellets are widely promoted and expected to be a cleaner alternative fuel to unprocessed crop residues and rawcoal in rural China.However,the effectiveness of these dissemination programs is not well evaluated.In this field study,emission characteristics of burning strawpellets,rawcoal,and unprocessed corn cobs in heating stoveswere investigated in a pilot village in Northeast China.Emission measurements covering the whole combustion cycle(ignition,flaming,and smoldering phases)shows the promotion of improved heating stoves and straw pellets could reduce pollutant emissions(e.g.,SO_(2) and CO),but increase NO_(X) and PM_(2.5) emissions compared to the initial stove-fuel use pattern in the studied area.There is a significant variance in emission characteristics between different combustion phases.The normalized emission concentrations of the different stove-fuel combinations were higher than the limits in the Chinese national standard for heating stoves,indicating that the standard is not met for real-world emissions.Coal consumption was lower than official data.Household surveys were conducted to identify the barriers to fuel and stove access associated with existing promotion strategies,management,and policies.The pilot program was of the typical“subsidy-and-policy-dependence”pattern and was unlikely to be implemented on a large scale.Technological innovation,operational optimization,and proper policies considering the local socioeconomic factors are needed to sustain the promotion of biomass straw pellets and stoves.

关 键 词：Northeast China Straw pellet Improved heating stove Emission factors 

分 类 号：TK6[动力工程及工程热物理—生物能]