Abstract:

The first unit in domestic that using the combination technology of ebullated bed hydrogena-tion+fixed bed hydrocracking to produce diesel oil and naphtha with medium and low temperature full distillate coal tar as feedstocks was successfully put into operation in a factory in Shaanxi province in August 2020. The STRONG ebullated bed hydrogenation technology independently developed by SINOPEC was used for the first time in the ebullated bed hydrogenation unit. This paper introduces the general situation of the unit and the main technological characteristics, and analyzes and summarizes the operation problems of the unit based on the first shutdown and maintenance. Through the comparison of design and operation data, the operation parameters of the unit have reached or exceeded the design value. The naphtha product yield is up to 33%, which can be used as the feedstock of reforming unit. The diesel product yield reaches 60%, which is a high quality diesel blending component. The energy consumption of the unit is 74.48 kilograms of oil equivalent per ton feedstock, which is lower than the design energy consumption.

Key words: STRONG, ebullated bed hydrogenation, fixed bed hydrocracking, coal tar hydrogenation, product yield, energy consumption

摘要：

国内首套采用沸腾床加氢提质+固定床加氢裂化成套技术，以中低温全馏分煤焦油为原料生产柴油和石脑油产品的装置，于2020年8月在陕西某厂顺利投产。其中沸腾床加氢提质单元首次采用了中国石化自主研发的STRONG沸腾床加氢技术。文章介绍了装置概况及主要工艺技术特点，并结合第一次停工检修情况对装置的运行问题进行了分析总结。经对比，该装置各项运行指标均达到或优于设计值。该装置石脑油产品收率最高可达33%,可作为重整装置进料；柴油产品收率达到60%,是优质的柴油调合组分。装置能耗74.48 kg/t(以标准油计),低于设计能耗。

关键词: STRONG, 沸腾床加氢, 固定床加氢裂化, 煤焦油加氢, 产品收率, 能耗