基于预加氢的煤焦油重质馏分油供氢性能研究
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摘要
对煤焦油重质馏分油进行预加氢处理,利用红外光谱、核磁共振和元素分析等方法,从分子结构角度深入探讨煤焦油重质馏分油的理化性质和供氢性能的变化规律。结果表明:通过预加氢处理,煤焦油重质馏分油的芳碳率(f_a)由加氢前的0.89下降到加氢后的0.80,芳环取代度(σ)由加氢前的0.12提高到0.20,供氢指数(PDQI)由3.21mg/g提高到4.02mg/g;预处理后的煤焦油重质馏分油在煤油共炼中的氢耗由4.03%下降到3.74%,转化率和油产率均得到提高,产物油中的沥青质含量明显下降,油品质量明显改善。
The coal tar heavy oil was pre-hydrotreated and then characterized by means of infrared spectroscopy,nuclear magnetic resonance and elemental analysis.The physicochemical properties and the proton donor ability of the pre-hydrotreated oil were investigated from the molecular structure point of view.The results showed that after pre-hydrogenation,the aromaticity of the hydrotreated heavy oil decreases from 0.89 of feed to 0.80,the degree of substitution of aromatic rings increases from 0.12 to 0.20 and the proton donor quality index(PDQI)increases from 3.21 to 4.02,the hydrogen consumption of coal tar heavy oil in coal-oil co-processing from 4.03%to 3.74%,the conversion rate and the oil yield are improved,the asphaltene content in the product decreases significantly and the oil quality is greatly improved.
The coal tar heavy oil was pre-hydrotreated and then characterized by means of infrared spectroscopy,nuclear magnetic resonance and elemental analysis.The physicochemical properties and the proton donor ability of the pre-hydrotreated oil were investigated from the molecular structure point of view.The results showed that after pre-hydrogenation,the aromaticity of the hydrotreated heavy oil decreases from 0.89 of feed to 0.80,the degree of substitution of aromatic rings increases from 0.12 to 0.20 and the proton donor quality index(PDQI)increases from 3.21 to 4.02,the hydrogen consumption of coal tar heavy oil in coal-oil co-processing from 4.03%to 3.74%,the conversion rate and the oil yield are improved,the asphaltene content in the product decreases significantly and the oil quality is greatly improved.
引文
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[2]姚春雷,全辉,张忠清.中低温煤焦油加氢生产清洁燃料油技术[J].化工进展,2013,32(3):501-507
[3]张艳梅,赵广辉,卢竟蔓,等.催化裂化油浆高值化利用技术研究现状[J].化工进展,2016,35(3):754-757
[4]王学云.八道湾煤与重油加氢反应匹配性研究[D].北京:煤炭科学研究总院,2016
[5]朱豫飞.煤油共炼技术的现状与发展[J].洁净煤技术,2013,19(4):68-72
[6]杨兆中,朱静怡,李小刚,罗丹.微波加热技术在非常规油资源中的研究现状与展望[J].化工进展,2016,35(11):3478-3483
[7]Priyanto U,Sakanishi K,Okuma O,et al.Optimization of two-stage liquefaction of Tanito Harum coal with FeNi catalyst supported on carbon black[J].Energy&Fuels,2001,15(4):856-862
[8]阎瑞萍,朱继升,杨建丽,等.兖州煤与大庆减压渣油在共处理过程中的相互作用[J].燃料化学学报,2000,28(6):533-536
[9]阎瑞萍,朱继升,王志杰,等.兖州煤与石家庄减压渣油共处理的研究:Ⅰ.共处理对煤液化转化率及产物分布的影响[J].煤炭学报,2000,25(6):655-659
[10]霍卫东,史士东.三种直接液化催化剂的活性和选择性对比研究[J].煤炭转化,2007,30(4):43-45
[11]Hu Haoquan,Bai Jinfeng,Guo Shucai,et al.Coal liquefaction with in situ impregnated Fe2(MoS4)3bimetallic catalyst[J].Fuel,2002,81(11/12):1521-1524
[12]赵志军,郝卫鸣,薛建勋,等.浅议高温煤焦油加氢[J].燃料与化工,2014,45(1):38-40
[13]燕京,吕才山,刘爱华,等.高温煤焦油加氢制取汽油和柴油[J].石油化工,2006,35(1):33-36
[14]张晓静,吴艳,杜淑凤.煤直接液化溶剂油的平均结构[J].洁净煤技术,2009,15(1):35-38
[15]煤炭液化反应性的高压釜试验方法:GB/T 33690-2017[S].2017
[16]颜丙峰.高压釜中煤液化性能评价方法[J].洁净煤技术,2017,23(2):56-59