The alkali metal occurrence characteristics and its release and conversion during wheat straw pyrolysis

doi:10.1016/j.renene.2019.11.013

	The alkali metal occurrence characteristics and its release and conversion during wheat straw pyrolysis
	Zhang YF(张玉峰)1,2; Xie XY 1,3; Zhao J(赵京)1,2 ; Wei XL(魏小林)1,2
通讯作者	Wei, Xiaolin(xlwei@imech.ac.cn)
发表期刊	RENEWABLE ENERGY
	2020-05-01
卷号	151 页码:255-262
ISSN	0960-1481
摘要	Biomass is an abundant and clean resource with good application value. However, due to high contain of alkali metals, it causes boiler's corrosion and slagging during utilization. In this paper, pyrolysis experiments were carried out from 200 to 1000 degrees C and a series of detection methods are applied to explore occurrence, release and conversion characteristics of wheat straw. When temperatures are raised from 200 to 1000 degrees C, water-soluble K releases first. Then NH4Ac soluble K converts to water-soluble K. It is found that NON content is high, which accounts for 27.11% of total anions. At low temperatures (<400 degrees C) 35.50% K will release as KNO3, which is larger than that of the solid fuels with less NO3-. Meanwhile part of K and Cl enriches on particles surface due to carrying of moisture. When temperatures are higher than 400 degrees C, K is mainly released in the form of KCl. As KCl on the sample surface is released, K and Cl inside the sample can't reach the sample surface. At 600 degrees C, the total KCl content increases to the maximum. Furthermore it is found that NH4Ac soluble K can convert into water-soluble K. When it is 800 degrees C, K release is 53.66%. And K release accounts for 55.26% at 1000 degrees C. (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Wheat straw Release Conversion Potassium
DOI	10.1016/j.renene.2019.11.013
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000521120700021
关键词[WOS]	BIOMASS ; COMBUSTION ; COAL ; TRANSFORMATION ; COCOMBUSTION ; CORROSION ; BEHAVIOR ; DEPOSITION ; CHLORINE ; BOILERS
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels
WOS类目	Green & Sustainable Science & Technology ; Energy & Fuels
资助项目	National Natural Science Foundation of China[51736010]
项目资助者	National Natural Science Foundation of China
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Wei, Xiaolin
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81808
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.North China Elect Power Univ, Baoding 071003, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Zhang YF,Xie XY,Zhao J,et al. The alkali metal occurrence characteristics and its release and conversion during wheat straw pyrolysis[J]. RENEWABLE ENERGY,2020,151:255-262.
APA	张玉峰,Xie XY,赵京,&魏小林.(2020).The alkali metal occurrence characteristics and its release and conversion during wheat straw pyrolysis.RENEWABLE ENERGY,151,255-262.
MLA	张玉峰,et al."The alkali metal occurrence characteristics and its release and conversion during wheat straw pyrolysis".RENEWABLE ENERGY 151(2020):255-262.

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