关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">沸腾床, 渣油加氢装置, 反应沉淀, 转化率, 混合渣油性质, 杂质脱除率, 催化剂加排量, 反应温度

Abstract: Based on industrial operation data, the factors affecting the long-term stable operation of a fluidized bed residue hydrogenation unit were studied, and optimization measures were proposed. The results indicate that reaction precipitation and impurity removal rate have a significant impact on the long-term stable operation of the fluidized bed residue hydrogenation unit; reaction sediment can be reduced by lowering the conversion rate and/or reducing the residue oil flow rate, with a 1 percentage point decrease in conversion rate leading to a 0.03 percentage point decrease in the reaction sediment index; it is also possible to suppress the precipitation of asphaltenes by increasing the proportion of polycyclic aromatic hydrocarbons in the feedstock, thereby reducing reaction precipitation, with a 5 percentage point increase in the blending ratio of polycyclic aromatic hydrocarbons leading to a 0.02 percentage point decrease in the reaction sediment index. Reducing the metal deposition rate of the catalyst will increase the impurity removal rate, and the metal deposition rate of the catalyst can be reduced by increasing the catalyst addition and discharge amount to achieve the goal of increasing the impurity removal rate. Raising the reaction temperature will increase the impurity removal rate, but it will also increase the reaction precipitation.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">fluidized bed, residue hydrogenation unit, reaction precipitation, conversion rate, properties of mixed residue oil, impurity removal rate, catalyst addition amount, reaction temperature