Abstract: A study on the change rule of distillation range of outlet samples of pre-protective reactor in hydrogenation unit of coking gasoline, pre-protective reaction catalysts S-1 and S-2 were used in the laboratory and industrial devices respectively for testing, and the impact of catalyst activity and operating conditions on the refined oil products was investigated. The results show that: in the laboratory, the final boiling point of the outlet samples of the pre-protective reactor using S-1 increased from 199℃ to 214℃. The reason for the increase in distillation range may be the formation of large molecular sulfur-containing compounds from small molecular sulfur-containing compounds, as well as the presence of a large amount of sulfur-containing compounds in the feedstock and outlet samples of the pre-protective reactor; in the industrial device, using the pre-protective reaction catalyst S-2, the final boiling point of the refined oil increased from 204℃ to 227℃, but by increasing the hydrogenation depth of the main reactor, the sulfur mass fraction of the refined oil was reduced to 120 μg/g, and the final boiling point of the outlet samples of the pre-protective reactor was reduced from 227℃ to 204℃, which can effectively remove large molecular sulfur-containing compounds, and the final boiling point of the product can still meet the requirements of the finished product.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">Hydrogenation unit of coking gasoline, Pre-protective reactor, Volumetric velocity, Hydrogen-oil ratio, Sulfur content, Final boiling point, Density, Sulfur-containing compounds

摘要： 针对焦化汽油加氢装置预保护反应器出口样品的馏程变化规律，预保护反应催化剂采用S-1和S-2分别在实验室及工业装置上进行试验，考察了催化剂活性及操作条件对精制油产品的影响。结果表明：实验室采用S-1预保护反应器出口样品终馏点从199℃增加到214℃，馏程升高的原因可能为小分子含硫化物生成大分子含硫化物，以及原料油与预保护反应器出口样品中含有大量含硫化物；工业装置采用S-2预保护反应催化剂，精制油终馏点从204℃增加到227℃，但通过增加主反应器加氢深度，精制油硫质量分数降至120 μg/g，预保护反应器出口样品终馏点从227℃降至204℃，可以有效脱除大分子含硫化物，产品终馏点仍可满足成品要求。

关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">焦化汽油加氢装置, 预保护反应器, 体积空速, 氢油比, 硫含量, 终馏点, 密度, 含硫化物