减压蒸馏生物油与乙醇在ZSM-5/MCM-41上共催化裂化

李美惠; 马文超; 毕亚东; 陈冠益; 陈慧

减压蒸馏生物油与乙醇在ZSM-5/MCM-41上共催化裂化

1.
天津理工大学, 天津 300384;
2.
天津大学环境科学与工程学院, 天津 300072

基金项目: 国家自然科学基金(51036006, 51306131)。

详细信息

通讯作者:
马文超,博士,Tel:18602272358,E-mail:mawc916@tju.edu.cn。

中图分类号: TK6
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- 文章访问数: 362
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- 被引次数: 0
出版历程
- 收稿日期: 2014-08-22
- 刊出日期: 2015-03-30

Catalytic co-cracking of reduced pressure distillation of bio-oil and ethanol over ZSM-5/MCM-41

1.
Tianjin University of Technology, Tianjin 300384, China;
2.
Tianjin University, School of Environmental Science and Engineering, Tianjin 300072, China

摘要

摘要: 采用减压蒸馏生物油为原料,与无水乙醇2:3(质量比)混合,在固定床中ZSM-5/MCM-41分子筛上共催化裂化,考查了反应温度和质量空速(WHSV)对裂化产物的影响。对ZSM-5/MCM-41进行了NH₃-TPD、BET、N₂吸附-脱附等表征,对裂化气体产物通过气相色谱仪分析,减压蒸馏生物油和精制生物油采用气相色谱-质谱联用仪进行定量分析。结果表明,反应温度500 ℃、WHSV 3.75 h^-1为反应优化工况。此反应条件下,精制生物油酸类物质从减压蒸馏生物油中的25.6%降至反应后的0.1%,效果显著,且精制生物油产率为46.8%,气体产物中CO₂和CO的浓度共9.5%。
- 生物油 /
- ZSM-5/MCM-41 /
- 共催化裂化 /
- 精制
Abstract: The reduced pressure distillation of bio-oil and the ethanol with the mixing ratio of 2:3 by weight were subjected to catalytic co-cracking over ZSM-5/MCM-41 molecular sieve in a fixed-bed reactor. The effects of reaction temperature and WHSV on cracking products were investigated. The catalyst is characterized by NH₃-TPD, BET, N₂ adsorption and desorption. The gaseous products were analyzed by gas chromatograph, and reduced pressure distillation of bio-oil and the upgraded bio-oil were quantified by gas chromatograph-mass spectrometry. It is found that the optimum conditions for the upgrading of bio-oil are 500 ℃ of the reaction temperature and 3.75 h^-1 of the WHSV, under which the acid substance in upgraded bio-oil is markedly reduced from 25.6% in reduced pressure distillation of bio-oil to 0.1% after upgrading. Meanwhile, the yield of upgraded bio-oil is 46.8%, and the concentration of CO₂ and CO in the gaseous products is 9.5%.
- bio-oil /
- ZSM-5/MCM-41 /
- catalytic co-cracking /
- upgrading

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