【摘要】：低碳烯烴如乙烯、丁二烯等是一種重要的基礎(chǔ)化工工業(yè)原料。為了考察不同反應(yīng)溫度和不同硅鋁比的HZSM-5分子篩對于生物原油替代油品裂解制取低碳烯烴的影響,在本文裂解-氣相色譜-質(zhì)譜聯(lián)用儀上進行了裂解實驗。通過實驗發(fā)現(xiàn),生物原油是一種良好的裂解制取低碳烯烴的原料,HZSM-5分子篩催化劑對生物原油裂解具有較好的催化作用,生物原油熱裂解實驗在850℃時可以得到48%的最大總烯烴收率,而催化裂解600℃可以獲得74%的最大總烯烴收率。分子篩的硅鋁比對生物原油裂解過程的催化作用差別比較大。高硅鋁比分子篩在低溫時有助于生成乙烯和丙烯,而低硅鋁比分子篩在高溫時有助于生成乙烯和丙烯;高硅鋁比分子篩低溫時有助于丁烯的生成,而在高溫時有助于丁二烯的生成,通過改變HZSM-5分子篩的硅鋁比對生物原油裂解產(chǎn)物分布進行調(diào)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，

本文編號：2469074