| 热分解气氛对流化床煤热解制油的影响 |
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| 引用本文： | 张晓方,金玲,熊燃,汪印,刘云义,许光文.热分解气氛对流化床煤热解制油的影响[J].化工学报,2009,60(9):2299-2307. |
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| 作者姓名： | 张晓方 金玲 熊燃 汪印 刘云义 许光文 |
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| 作者单位： | 中国科学院过程工程研究所多相复杂系统国家重点实验室; 北京航天万源煤化工工程技术有限公司;沈阳化工学院化学工程学院 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 在循环流化床锅炉上耦合流化床热解反应器既可提供电力又副产热解油，明显提高煤的利用价值。在这个过程中，热解反应器通常利用自身产生的热解气作为流化介质。本文考察了模拟热解气反应气氛对流化床煤热解拔头制取热解油产率的影响，并利用TG-FTIR分析了焦油官能团组成及随TG温度的变化。针对锅炉用烟煤的实验结果表明：采用热解气作为反应气氛时焦油产率最大，相对无水无灰基煤达13%。反应气氛中H2和CO2的存在不利于焦油生成，但CO 和CH4的加入提高了焦油产率;H2的加入有利于焦油中酚羟基、羧基类化合物生成，同时也促进了脂肪族化合物的裂解;CH4的存在可以提高焦油中单环芳烃、脂肪族及酚羟基类化合物的含量。
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| 关 键 词： | 热解拔头 流化床 焦油 反应气氛 |
| 收稿时间： | 2008-12-18 |
| 修稿时间： | 2009-5-31
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Effect of reaction atmosphere on tar production from coal pyrolysis in fluidized bed reactor |
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| ZHANG Xiaofang,JIN Ling,XIONG Ran,WANG Yin,LIU Yunyi,XU Guangwen.Effect of reaction atmosphere on tar production from coal pyrolysis in fluidized bed reactor[J].Journal of Chemical Industry and Engineering(China),2009,60(9):2299-2307. |
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| Authors: | ZHANG Xiaofang JIN Ling XIONG Ran WANG Yin LIU Yunyi XU Guangwen |
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| Abstract: | Coal utilization can be improved by coupling a fluidized bed pyrolyzer to a CFB boiler, which enables a co-production of pyrolysis oil and electricity. In this process, the pyrolyzer uses generally the self-generated pyrolysis gas as the fluidizing gas. The present study deals with the pyrolysis oil production in a fluidized bed reactor through using a simulated pyrolysis gas as the reaction atmosphere,and both the yield and composition were analyzed with TG-FTIR. For a bituminous coal used in steam boilers, the oil yield reaches its possible peak value of 13%(mass,daf). The presence of H2 and CO2 in the reaction atmosphere decreases the tar yield, whereas the addition of CO and CH4 into the atmosphere increases the tar production. TG-FTIR analysis demonstrated that adding H2 into the pyrolysis atmosphere increases the contents of phenolic and carboxylic compounds in the produced pyrolysis oil, while it promotes as well the cracking of aliphatic hydrocarbons during pyrolysis. Adding CH4 causes more aliphatic hydrocarbons, single aromatic ring chemicals and phenolic compounds in the pyrolysis oil. |
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| Keywords: | pyrolytic topping fluidized bed tar reaction atmosphere |
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