Release characteristics of alkali and alkaline earth metallic species during biomass pyrolysis and steam gasification process
Release characteristics of alkali and alkaline earth metallic species during biomass pyrolysis and steam gasification process
复制标题
生物质热解及蒸汽气化过程中碱金属和碱土金属物质的释放特征
DOI：
10.1016/j.biortech.2012.03.051
复制
发表时间：
2012-07-01
影响因子：
11.4
通讯作者：
Yao, Yao
中科院分区：
文献类型：
--
作者：
Jiang, Long;Hu, Song;Yao, Yao
研究碱金属和碱土金属物质（AAEMs）的释放特性具有潜在的重要意义，因为AAEM在生物质热转化过程中可能作为催化剂发挥有益作用。在本研究中，选取了三种典型的中国生物质进行热解，随后在一个特制的石英固定床反应器中对其焦炭进行水蒸气气化，以研究碱金属和碱土金属物质（AAEMs）的释放特性。结果表明，在热解过程中，53 - 76%的碱金属和27 - 40%的碱土金属释放出来，在焦炭气化过程中，12 - 34%的碱金属和12 - 16%的碱土金属蒸发，并且温度不是影响AAEMs排放的唯一因素。本文讨论了三种生物质在热解和焦炭气化过程中AAEMs的释放特性。（C）2012爱思唯尔有限公司。保留所有权利。
Investigating the release characteristics of alkali and alkaline earth metallic species (AAEMs) is of potential interest because of AAEM's possible useful service as catalysts in biomass thermal conversion. In this study, three kinds of typical Chinese biomass were selected to pyrolyse and their chars were subsequently steam gasified in a designed quartz fixed-bed reactor to investigate the release characteristics of alkali and alkaline earth metallic species (AAEMs). The results indicate that 53-76% of alkali metal and 27-40% of alkaline earth metal release in pyrolysis process, as well as 12-34% of alkali metal and 12-16% of alkaline earth metal evaporate in char gasification process, and temperature is not the only factor to impact AAEMs emission. The releasing characteristics of AAEMs during pyrolysis and char gasification process of three kinds of biomass were discussed in this paper. (C) 2012 Elsevier Ltd. All rights reserved.