Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (12): 4430-4435.DOI: 10.16085/j.issn.1000-6613.2017-0488

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Research on pyrolysis of biocrude for light olefins

SUN Jinsheng1, LI Tianpei1, SHI Ming2, YIN Hong3, GAO Hong1   

  1. 1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
    2 Wuhan Jinzhong Petrochem Engineering Co., Ltd., Wuhan 430223, Hubei, China;
    3 Chengdu Petrochemical Industrial Park Management Committee, Chengdu 610000, Sichuan, China
  • Received:2017-03-23 Revised:2017-06-19 Online:2017-12-05 Published:2017-12-05

利用生物原油裂解制取低碳烯烃的实验研究

孙津生1, 李天培1, 师明2, 尹红3, 高红1   

  1. 1 天津大学化工学院, 天津 300350;
    2 武汉金中石化工程有限公司, 湖北 武汉 430223;
    3 成都石油化学工业园区管理委员会, 四川 成都 610000
  • 通讯作者: 高红,博士,研究员,主要从事新型材料力学性能研究。
  • 作者简介:孙津生(1967-),男,博士,副研究员,主要从事催化热裂解与脱氢、过程系统工程与强化。
  • 基金资助:
    天津大学自主创新基金项目(2016XZC-0028)。

Abstract: Light olefins,such as ethylene and butadiene,are important basic chemical raw materials. To investigate the effect of temperatures and HZSM-5 molecular sieve with different Si/Al ratios on the production of light olefin,pyrolysis experiment was conducted on a PY-GC-MS. The experiment results showed that the biocrude was an ideal raw material to produce light olefin through cracking. HZSM-5 molecular sieve catalyst had a good catalytic effect on the biocrude cracking; 48% of the maximum total olefin yield could be obtained at 850℃ in the thermal cracking experiment,and the maximum total olefin yield through catalytic cracking was 74% obtained at 600℃. Different Si/Al ratio of the molecular sieve had a significant impact on the pyrolysis products. High Si/Al ratio of the molecular sieve is beneficial to produce ethylene and propylene at low temperatures,while low Si/Al ratio of the molecular sieve could help to produce ethylene and propylene at high temperatures. Besides,high Si/Al ratio of the molecular sieve could help to produce butane at low temperatures,and butadiene at high temperature. The biocrude cracking product distribution could be controlled by changing Si/Al ratio of HZSM-5 molecular sieve.

Key words: biocrude, pyrolysis, olefin, molecular sieve

摘要: 低碳烯烃如乙烯、丁二烯等是一种重要的基础化工工业原料。为了考察不同反应温度和不同硅铝比的HZSM-5分子筛对于生物原油替代油品裂解制取低碳烯烃的影响,在本文裂解-气相色谱-质谱联用仪上进行了裂解实验。通过实验发现,生物原油是一种良好的裂解制取低碳烯烃的原料,HZSM-5分子筛催化剂对生物原油裂解具有较好的催化作用,生物原油热裂解实验在850℃时可以得到48%的最大总烯烃收率,而催化裂解600℃可以获得74%的最大总烯烃收率。分子筛的硅铝比对生物原油裂解过程的催化作用差别比较大。高硅铝比分子筛在低温时有助于生成乙烯和丙烯,而低硅铝比分子筛在高温时有助于生成乙烯和丙烯;高硅铝比分子筛低温时有助于丁烯的生成,而在高温时有助于丁二烯的生成,通过改变HZSM-5分子筛的硅铝比对生物原油裂解产物分布进行调控。

关键词: 生物原油, 裂解, 烯烃, 分子筛

CLC Number: 

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