摘要
富钙生物油作为一种新型的脱硫剂,其煅烧分解机理及脱硫特性还处在研究阶段。文章采用热重分析仪对富钙生物油煅烧试验进行了研究,结果表明:富钙生物油的煅烧分为3个阶段,分别是部分生物油组分的分解阶段、有机羧酸钙盐快速分解阶段、碳酸钙分解阶段。有机酸钙盐分解阶段大量气体析出的气蚀作用是固体产物CaO孔隙特性明显优于石灰石煅烧产物的主要原因。热重分析仪及小型固定床反应器上脱硫试验表明,富钙生物油脱硫性能远优于石灰石,相同反应条件下,富钙生物油脱硫反应时间是石灰石的两倍,最终钙转化率也远高于石灰石。石灰石最佳脱硫反应温度为850℃,而富钙生物油最佳脱硫反应温度为900℃。
As a novel desulfurizer,the decomposition mechanism and desulfurization characteristics of Calcium-Enriched Bio-oil（CEB） are still in the research stage.In this paper,thermal decomposition of CEB was investigated by thermogravimetric analysis.The results showed that there were three reaction stages： CO2 and H2O precipitation from part component of bio-oil,decomposition of organic carboxylic acid calcium salt,decomposition of calcium carbonate.The main reason that solid products CaO obtained from CEB is better than those from limestone was the cavitation effect of large amounts release during the second stage.Desulfurization experimental results showed that the desulfurization performance of CEB was far superior to limestone.Under the same conditions the desulfurization reaction time of CEB was 2 times that of the limestone and ultimate calcium conversion rate was much higher than the limestone.The optimum desulfurization reaction temperature for limestone was 850 ℃ while CEB was 900 ℃.
出处
《可再生能源》
CAS
北大核心
2012年第4期42-46,共5页
Renewable Energy Resources
基金
国家自然科学基金(50676037
50721005)
国家重点基础研究发展计划(2007CB210202)
关键词
富钙生物油
煅烧特性
热重分析
脱硫反应
calcium-enriched bio-oil
calcination characteristics
thermogravimetric analysis
desulfurization
作者简介
张谋（1980-），男，博士研究生，研究方向为污染物生成机理及控制。E—mail：zm80@foxmail.com
通讯作者：陈汉平（1962-），男，教授，博士生导师，研究方向为煤与生物质高效转化及流化床先进技术利用。E-mail：hp．chen@163．com
