渣油加氢生成油中含硫化合物分布研究
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摘要
以一种高硫渣油(茂名常压渣油)和一种低硫渣油(海南RDS原料)为原料进行渣油加氢试验,通过改变空速和反应温度,分别得到不同硫含量的加氢生成油。对加氢生成油中硫化物的分布进行研究,结果表明:不同渣油的加氢生成油中沥青质硫含量的变化随着加氢生成油硫含量变化的规律不同;对于茂名常压渣油,当加氢生成油硫质量分数不低于0.31%时,加氢生成油硫含量越低,其沥青质的硫含量越低;对于海南RDS原料,当加氢生成油硫质量分数不高于0.25%时,加氢生成油硫含量越低,其沥青质的硫含量越高;对于不同渣油加氢生成油,其沥青质中硫占加氢生成油总硫量的比例随着加氢生成油硫含量降低幅度而变化的规律相同,加氢生成油硫含量越低,硫含量降低幅度越大,沥青质中硫占加氢生成油总硫量的比例越高。
At various LHSV and reaction temperatures,the hydrotreated residues with different sulfur contents were obtained using Maoming AR(high-sulfur residue)and Hainan RDS feed(low-sulfur residuum oil)as feedstocks.The sulfur distribution analysis showed that the changing rules of sulfur content in asphaltene are different with different sulfur contents in the hydrotreated oils.For Maoming AR,in the case of the sulfur content in the hydrogenated oil is not less than 0.31%,the lower the sulfur content in hydrotreated oil,the lower the sulfur content in asphaltene.For Hainan residue,when the sulfur content in the hydrogenated oil is not larger than 0.25%,the sulfur content in asphaltene becomes larger as reduction of sulfur content in hydrotreated product.The same variation tendency of the ratio of sulfur content in the asphaltene over the total sulfur content in the hydrotreated oil was observed:the lower the sulfur content in product and the greater the reduction of sulfur content,the higher the ratio of the sulfur content in asphaltene.
At various LHSV and reaction temperatures,the hydrotreated residues with different sulfur contents were obtained using Maoming AR(high-sulfur residue)and Hainan RDS feed(low-sulfur residuum oil)as feedstocks.The sulfur distribution analysis showed that the changing rules of sulfur content in asphaltene are different with different sulfur contents in the hydrotreated oils.For Maoming AR,in the case of the sulfur content in the hydrogenated oil is not less than 0.31%,the lower the sulfur content in hydrotreated oil,the lower the sulfur content in asphaltene.For Hainan residue,when the sulfur content in the hydrogenated oil is not larger than 0.25%,the sulfur content in asphaltene becomes larger as reduction of sulfur content in hydrotreated product.The same variation tendency of the ratio of sulfur content in the asphaltene over the total sulfur content in the hydrotreated oil was observed:the lower the sulfur content in product and the greater the reduction of sulfur content,the higher the ratio of the sulfur content in asphaltene.
引文
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[2]石亚华,牛传峰,高永灿,等.渣油加氢技术的研究:Ⅱ.渣油加氢与催化裂化双向组合技术(RICP)的开发[J].石油炼制与化工,2005,36(11):21-24
[3]李志强.重油转化——21世纪石油炼制技术的焦点[J].炼油设计,1999,29(12):8-14
[4]刘家明.渣油加氢工艺在我国的应用[J].石油炼制与化工,1998,29(6):17-21
[5]Kabe T,Ishihara A,Zhang Qing.Deep desulfurization of light oil:Part 2.Hydrodesulfurization of dibenzothiophene,4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene[J].Appl Catal A:Gen,1993,97(1):1-9
[6]Houlla M,Broderick D H,Sapre A V,et al.Hydrodesulfurization of methyl-substituted dibenzothiophenes catalyzed by sulfided Co-Mo/γ-Al2O3[J].J Catal,1980,61(2):523-527
[7]李春年.渣油加工工艺[M].北京:中国石化出版社,2002:414-416
[8]李大东.加氢处理工艺与工程[M].北京:中国石化出版社,2004:134