期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 42, 期 17, 页码 3929-3936出版社
AMER CHEMICAL SOC
DOI: 10.1021/ie0300575
关键词
-
Evolution rates of low-molecular-weight gas products (H-2, CH4, CO, and CO2) in pyrolysis and steam gasification of biomass (cellulose and lignin) were studied using thermogravimetric-mass spectrometric (TG-MS) analysis. Total gas yields were measured with a TCD-micro gas chromatograph (micro GC) at heating rates of 1, 10, and 100 K s(-1). Steam gasification of biomass demonstrated heating rate effects on gas evolution: 81 wt % of cellulose was converted into tar in pyrolysis; also, slow heating and steam gasification of nascent char occurred above 700 K, evolving H-2. Rapid heating significantly enhanced secondary pyrolysis of cellulose tar to yield H-2, CO, and CH4. In contrast, char formation at 500-773 K was dominant in lignin pyrolysis. Evolution of H-2 and CO2 were significantly increased by steam gasification of char. Insignificant influence of heating rate on carbon and hydrogen yield of lignin was observed. Over 70% of lignin's chemical energy was converted into gas, especially hydrogen.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据