Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles

doi:10.1016/j.jclepro.2016.11.107

	Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles
	Dunnigan, Lewis 1; Ashman, Peter J.1; Zhang, Xiangping 2; Kwong, Chi Wai 1
	2018-01-20
发表期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	0959-6526
卷号	172 页码:1639-1645
摘要	Increasing energy demands and waste management concerns have motivated agricultural producers to consider the decentralized conversion of agricultural by-products for energy and value-added product (biochar) generation. Due to the variability of fuel properties, direct combustion of agricultural by-products with high ash contents, such as rice husk, may suffer from increased fouling and slagging issues with high particulate matter (PM) emissions. Combustion of the raw pyrolysis volatiles (bio-oil and synthesis gas (syngas) mixtures) produced from pyrolysis with the inherent separation of ash in the biochar may potentially mitigate these issues. In this study, PM emissions from the combustion of the raw pyrolysis volatiles derived from the pyrolysis of rice husk were evaluated at laboratory scale by using a combined pyrolysis and combustion facility. Pyrolysis temperatures ranging from 400 degrees C to 800 degrees C were used to generate raw pyrolysis volatiles with differing bio-oil to syngas ratios which were then combusted at 850 degrees C. It was found that bio-oil dominated the higher heating value of the raw pyrolysis volatiles produced at low pyrolysis temperatures. The combustion of such raw pyrolysis volatiles with high bio-oil content substantially increased the yields of PM10 and PM2.1. Linear dependence was observed between PM emissions and bio-oil fraction in the raw pyrolysis volatiles. Nevertheless, the pyrolysis-combustion process, with >96% of the ash retained in biochar prior to combustion, is more favorable than direct combustion for high ash biomass as far as PM emissions are concerned. (C) 2016 Elsevier Ltd. All rights reserved.
关键词	Rice Husk Biochar Ash Particulate Emissions Pyrolysis Raw Pyrolysis Volatiles
文章类型	Article
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI	10.1016/j.jclepro.2016.11.107
收录类别	SCI
语种	英语
关键词[WOS]	BIO-OIL PRODUCTION ; AGRICULTURAL RESIDUES ; MOLECULAR-STRUCTURE ; PARTICLE EMISSIONS ; BIOMASS COMBUSTION ; SOOT FORMATION ; FUEL ; SYSTEMS ; PELLETS ; TEMPERATURE
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS类目	GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ; Engineering, Environmental ; Environmental Sciences
项目资助者	Government of South Australia through the Premier's Research and Industry Fund Catalyst Researth Grants(CGR72)
WOS记录号	WOS:000423002200031
引用统计
文献类型	期刊论文
条目标识符	http://ir.ipe.ac.cn/handle/122111/23589
专题	多相复杂系统国家重点实验室
作者单位	1.Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia 2.Chinese Acad Sci, Inst Proc Engn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Dunnigan, Lewis,Ashman, Peter J.,Zhang, Xiangping,et al. Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles[J]. JOURNAL OF CLEANER PRODUCTION,2018,172:1639-1645.
APA	Dunnigan, Lewis,Ashman, Peter J.,Zhang, Xiangping,&Kwong, Chi Wai.(2018).Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles.JOURNAL OF CLEANER PRODUCTION,172,1639-1645.
MLA	Dunnigan, Lewis,et al."Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles".JOURNAL OF CLEANER PRODUCTION 172(2018):1639-1645.