煤焦油减压渣油的临氢催化热裂化反应行为

发布时间：2018-05-28 13:13

  本文选题：煤焦油减压渣油 + 分散型催化剂下的临氢热裂化　； 参考：《石油学报(石油加工)》2017年03期

【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。
[Abstract]:The catalytic cracking behavior of coal tar vacuum residue CTVRat different reaction temperatures was investigated by autoclave, and the asphaltene composition before and after the reaction was analyzed by modified B-L method. Toluene insoluble compounds in raw materials and reaction products were characterized by SEM- FT-IR. The results showed that the conversion rate of CTVR increased with the increase of reaction temperature, while the mass fraction of toluene insoluble compounds in the reaction products first decreased and then increased. When the reaction temperature was 360 鈩，

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