化工学报 ›› 2021, Vol. 72 ›› Issue (10): 5206-5217.DOI: 10.11949/0438-1157.20210416

• 催化、动力学与反应器 • 上一篇    下一篇

活性炭催化热解纤维素协同制备酚类和合成气

苏银海1(),张书平2(),刘凌沁1,熊源泉3()   

  1. 1.南京理工大学新能源学院,江苏 江阴 214443
    2.南京理工大学能源与动力工程学院,江苏 南京 210094
    3.能源热转换及其过程测控教育部重点实验室,东南大学能源与环境学院,江苏 南京 210096
  • 收稿日期:2021-03-24 修回日期:2021-07-08 出版日期:2021-10-05 发布日期:2021-10-05
  • 通讯作者: 张书平,熊源泉
  • 作者简介:苏银海(1990—),男,博士,讲师,susilversea@163.com
  • 基金资助:
    国家重点研发计划“绿色宜居村镇技术创新” 重点专项(2019YFD1100602);国家自然科学基金青年项目(51906110);江苏省自然科学基金青年项目(BK20190465);中国博士后科学基金面上资助项目(2019M650097);中国博士后科学基金特别资助项目(2020T130096)

Synergetic production of phenols and syngas from the catalytic pyrolysis of cellulose on activated carbon

Yinhai SU1(),Shuping ZHANG2(),Lingqin LIU1,Yuanquan XIONG3()   

  1. 1.School of New Energy, Nanjing University of Science and Technology, Jiangyin 214443, Jiangsu, China
    2.School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
    3.Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China
  • Received:2021-03-24 Revised:2021-07-08 Online:2021-10-05 Published:2021-10-05
  • Contact: Shuping ZHANG,Yuanquan XIONG

摘要:

苯酚和合成气均为工业生产中重要的基础化工原料。以自制的活性炭为催化剂,以纤维素为原料实现了催化热解液相产物中苯酚和气相产物中CO的同时富集。实验发现,生物质灰分中的钾、热解过程中催化剂/纤维素质量比和热解温度均对气液相产物的品质有着不同程度的影响。研究表明:钾的存在不利于热解产物品质的提高。钾虽然提高了生物油中苯酚的富集度,但降低了实际产率。而热解气中CO的浓度和产率均下降。对催化热解条件的研究表明热解温度450℃,催化剂比例为1∶1时可获得最佳的热解产物。此时,生物油中酚类物质占可检测有机物相对含量的62.31%,其中苯酚为45.37%,产率为1.78%(质量)。热解气中CO的浓度和产率分别为69.21%(体积)和 169.95 ml/g,热值为12.93 MJ/m3

关键词: 生物质, 活性炭, 热解, 生物油, 合成气

Abstract:

Both phenols and syngas are important basic chemical raw materials in industrial production. In this paper, self-made activated carbon was used as a catalyst, and cellulose was used as a raw material to achieve the simultaneous enrichment of phenol in the liquid phase product of catalytic pyrolysis and CO in the gas phase product. It was found that all of the potassium in ash, the mass ratio of catalyst/cellulose and the catalytic temperature affected the quality of gas and liquid products. Results showed that the presence of potassium was against the improvement of pyrolysis products quality. Although, the relative content of phenols in bio-oil was increased, but its actual yield was decreased. Meantime, both the concentration and yield of CO in pyrolytic gas decreased. The optimum products were obtained at the pyrolysis temperature of 450℃ with the catalyst/cellulose mass ratio of 1∶1. At this time, the phenolic substances in the bio-oil accounted for 62.31% of the relative content of the detectable organic matter, of which phenol was 45.37%, and the yield was 1.78%(mass). Besides, the concentration and yield of CO in pyrolytic gas were 69.21%(vol) and 169.95 ml/g, with the calorific value of 12.93 MJ/m3.

Key words: biomass, activated carbon, pyrolysis, bio-oil, syngas

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