摘要
稻秆热解的目的是为了脱除氧元素,增加能量密度,并将热解的固体产物作为生物质气流床气化原料,从而提高气化合成气的热值。稻秆在管式电阻炉中以5℃/min和15℃/min的升温速率进行慢速热解,热解温度为200~800℃。利用自动量热仪和元素分析仪对热解后固体产物进行热值和元素分析。结果表明：同一热解温度下,升温速率越快,半焦的热值越高;碳元素的含量随着热解温度的升高逐渐增加,而氢和氧两种元素的含量随着热解温度的升高逐渐降低。同时,推导出热值与半焦中各元素含量的关系式。
Rice straw was pyrolyzed to remove its water and volatile constituents to form a solid product of high energy density, which employed as the gasification feed, resulted in a biosyngas of higher heating value. Series of pyrolysis experiments were carried out in a tube furnace to determine the effects of heating rate （5-15 ℃/ min） and pyrolysis temperatures （200-800℃） on composition and higher heating value of the semi-char product. Increasing the heating rate and/or the pyrolysis temperature produced less semi-char of higher heating value due to its higher carbon content. Empirical its composition of C, H, O, N, S, formula was established to correlate the semi-char＇s higher heating value and and ash （mass percent）.
出处
《华东理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第2期219-222,共4页
Journal of East China University of Science and Technology
关键词
稻秆
慢速热解
半焦
热值
元素分析
rice straw
slow pyrolysis
semi-char
higher heating value
elemental analysis
作者简介
张巍巍（1980-），女，吉林省通榆县人，博士研究生，从事生物质热解方面的研究。E-mail：zww2006@126. com
