几种石油系重质原料焦炭化性能的对比分析

COMPARISON OF COKING PROERTIES OF HEAVY PETROLUEM RAW MATERIALS

借助国内减压渣油、催化裂化油浆及乙烯焦油实验室焦炭化试验数据,测算出3种原料油经延迟焦化装置加工的模拟效益。结果表明,减压渣油掺兑催化裂化油浆和乙烯焦油后,延迟焦化装置的效益均有不同程度的下降;但分析结果显示,对于炼油厂来说,按照当前的价格体系计算催化裂化油浆、乙烯焦油经延迟焦化装置加工的效益要好于两者作为商品直接外销的效益。造成延迟焦化装置效益下降的原因主要是掺炼催化裂化油浆、乙烯焦油更多地副产了低价值的普通石油焦产品。通过对原料油的组成、结构以及石油焦成焦机理进行分析,探讨了乙烯焦油在工业延迟焦化装置上加工的可行性,同时阐述了改善乙烯焦油炭化性能的途径和措施。

Based on the coking test of vacuum residue,FCC slurry and ethylene tar in domestic labo-ratory,the benefits of three kinds of raw oils processed by delayed coking were simulated. The results show that the benefits of unit decline in different degree when the vacuum residue oil blending with FCC slurry and ethylene tar are processed. However,the analysis shows that the benefit of refinery process-ing FCC slurry and ethylene tar is better than the two raw materials are directly sold as products. The reason lies in more low value common petroleum coke produced when FCC slurry oil and ethylene tar with vacuum residue oil are co-processed. By analyzing the compositions and structure of three raw oils, and coking mechanism,the feasibility of processing ethylene tar in industrial delayed coking unit is dis-cussed. The ways and measures for production of high quality petroleum coke with ethylene tar are pro-posed.