煤焦油减压渣油的临氢催化热裂化反应行为  

Catalytic Thermal Reaction Behavior of Coal Tar Vacuum Residue in H_2 Atmosphere

作　　者：邓文安 李金璐 李传 杜俊涛 DENG Wenan LI Jinlu LI Chuan DU Juntao(State Key Laboratory of Heavy Oil , China University of Petroleum, Qingdao 266580, Chin)

机构地区：[1]中国石油大学重质油国家重点实验室,山东青岛266580

出　　处：《石油学报（石油加工）》2017年第3期463-470,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学青年基金项目(21106186)资助

摘　　要：采用高压釜考察了不同反应温度下煤焦油减压渣油(CTVR)的临氢催化热裂化反应行为,并采用改进的B-L法分析了反应前后沥青质组成结构,采用SEM、FT-IR等手段表征了原料及反应产物中甲苯不溶物。结果表明,随着反应温度的升高,CTVR临氢催化热裂化转化率提高,而反应产物中甲苯不溶物质量分数先减少后增大,在反应温度360℃时甲苯不溶物质量分数达到最小值。CTVR中甲苯不溶物由无机矿物质和有机化合物组成,其中的有机化合物在较低温度下部分转化成减压馏分油与减压渣油。随着反应温度升高,CTVR临氢催化热裂化产物中沥青质质量分数略有增加,超过350℃时,沥青质开始缩合生成甲苯不溶物,导致沥青质质量分数迅速降低。The catalytic thermal reaction behavior of coal tar vacuum residue （CTVR） in H2 atmosphere was investigated in the autoclave at different reaction temperatures. The composition and structure of asphaltenes before and after reaction were analyzed by modified B-L methods. The toluene insolubles in raw materials and the product were determined by SEM and FT-IR. Results showed that with the increase of reaction temperature, the conversion of CTVR increased, while the content of toluene insoluble reduced firstly and then increased, reaching the minimum value at 360℃. Further, the toluene insoluble of CTVR was composed of inorganic minerals and organic compounds, and the organic compounds could convert to the vacuum gas oil and vacuum residue at lower temperatures. Moreover, with the increase of reaction temperature, the yield of asphaltene first increased slowly, and then sharply decreased after 350℃, because the asphaltene was gradually converted to coke.

关 键 词：煤焦油减压渣油 分散型催化剂下的临氢热裂化 甲苯不溶物 沥青质 结构 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]