仪长渣油中含钙化合物的分布及加氢脱钙反应的研究

发布时间：2018-09-03 06:33

【摘要】：深入分析了高钙含量仪长渣油的性质,并对其进行加氢处理,考察了渣油加氢前后含钙化合物分布规律及其加氢反应特性。结果表明,仪长渣油中含钙化合物可以分为易脱除钙和难脱除钙;前者主要分布于胶质中,较容易加氢脱除或使用脱钙剂脱除,后者则主要分布于沥青质中,采用上述2种方法均较难脱除。仪长渣油的加氢脱钙率通常低于其脱镍率和脱钒率;较高的反应温度对加氢脱钙反应有利;加氢脱钙率与沥青质加氢脱除率具有一定的相关性。在实际工业装置上,为避免易脱除钙过于集中地沉积在固定床渣油加氢前部催化剂床层,应采用适量的脱钙剂先将易脱除钙尽可能完全脱除,再进行固定床加氢处理。
[Abstract]:The properties of high calcium content meter residuum were analyzed and treated by hydrogenation. The distribution of calcium compounds and the hydrogenation reaction characteristics of residual oil before and after hydrogenation were investigated. The results show that the calcium compounds in Yichang residuum can be divided into easy to remove calcium and difficult to remove calcium, the former is mainly distributed in colloid, the latter is mainly distributed in asphaltene, and is easy to be removed by hydrotreating or using decalcifying agent, the former is mainly distributed in asphaltene, the latter is mainly distributed in asphaltene. The above two methods are difficult to remove. The hydrodecalcification rate of the residue is usually lower than that of the nickel removal rate and vanadium removal rate; the higher reaction temperature is favorable to the hydrodecalcification reaction; the hydrodecalcification rate has a certain correlation with the asphaltene hydrodecalcification rate. In practical industrial plant, in order to avoid easily removing calcium from deposition in the catalyst bed in front of residue hydrogenation, it is necessary to use proper amount of decalcifying agent to remove easily removed calcium as well as possible, and then to carry out fixed-bed hydrogenation.
【作者单位】：中国石化石油化工科学研究院;
【基金】：国家科技支撑计划课题项目(2012BAE05B04)资助
【分类号】：TE624

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