利用生物原油裂解制取低碳烯烃的实验研究
发布时间：2019-05-01 06:30
【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。
[Abstract]:Low-carbon olefins such as ethylene and butadiene are important raw materials for basic chemical industry. In order to investigate the effect of HZSM-5 molecular sieves with different reaction temperature and Si / Al ratio on the pyrolysis of bio-crude oil instead of oil to low-carbon olefins, pyrolysis experiments were carried out on the pyrolysis-gas chromatography-mass spectrometry (GC-MS) in this paper. It is found that bio-crude oil is a good raw material for producing low-carbon olefins by pyrolysis, and HZSM-5 molecular sieve catalyst has a good catalytic effect on biocrude oil cracking. The maximum total olefin yield of 48% can be obtained at 850 鈩，
本文编号：2469074
[Abstract]:Low-carbon olefins such as ethylene and butadiene are important raw materials for basic chemical industry. In order to investigate the effect of HZSM-5 molecular sieves with different reaction temperature and Si / Al ratio on the pyrolysis of bio-crude oil instead of oil to low-carbon olefins, pyrolysis experiments were carried out on the pyrolysis-gas chromatography-mass spectrometry (GC-MS) in this paper. It is found that bio-crude oil is a good raw material for producing low-carbon olefins by pyrolysis, and HZSM-5 molecular sieve catalyst has a good catalytic effect on biocrude oil cracking. The maximum total olefin yield of 48% can be obtained at 850 鈩，
本文编号：2469074
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