加氢裂化尾油作为供氢剂对焦化产品分布的影响

EFFECT OF HYDROCRACKING TAIL OIL AS HYDROGEN DONOR ON COKING PRODUCT DISTRIBUTION

对中海炼化惠州炼化分公司加氢裂化尾油和减压渣油进行了供氢、夺型氢能力测定,以加氢裂化尾油为供氢剂,以10%的比例加入到减压渣油中,进行延迟焦化实验室试验以及中型试验。结果表明,在反应温度为500℃、反应压力为0.15 MPa的条件下,分别以减压渣油和加入10%供氢剂的减压渣油为原料进行延迟焦化反应,与减压渣油原料相比,减压渣油中加入10%供氢剂后,粗汽油、粗柴油以及蜡油收率提高4.2百分点,焦炭收率降低3.1百分点,气体收率降低1.1百分点。

The capacities of hydrogen supply and hydrogen abstraction of hydrocracking tail oil and vacuum residue from CNOOC Refining Branch Huizhou Refinery were determined. The delayed coking laboratory and pilot plant test were performed using the residue and the residue with 10% hydrocracking tail oil. The pilot plant test results show that at the conditions of 500 ℃ and 0.15 MPa,compared with residue only,the total yield of naphtha, diesel and waxy oil increases by 4.2 percentage points;the yield of coke and dry gas reduces by 3.1 percentage points and 1.1 percentage points, respectively after the addition of hydrocracking tail oil as hydrogen donor.