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焦化蜡油因杂质含量高 ,尤其氮含量高 ,给催化裂化 (或加氢裂化 )装置的加工带来一定难度 ,为此 ,提出了以溶剂精制工艺为核心的组合工艺 ,从而为催化裂化或加氢裂化装置优化了原料。抽余油保留了焦化蜡油中绝大部分饱和烃 ,氮含量由原来的 0 .5 %以上降低到 0 .2 1%以下 ,质量优于相应的减压粗柴油 ;抽出油富含重芳烃 ,和一定比例催化裂化澄清油混合可作为生产针状焦的原料。 0 .2 5Mt/a焦化蜡油溶剂抽余油作为催化裂化 (或加氢裂化 )的掺兑料 ,年增效益 3× 10 7RMB $以上。
Due to the high content of impurities and especially the high content of nitrogen, coker gas oil brings certain difficulty to the processing of catalytic cracking (or hydrocracking) unit. Therefore, a combination process with solvent refining as the core is proposed, Hydrocracking unit optimizes raw materials. The remaining oil retains most of the saturated hydrocarbons in the coker gas oil. The nitrogen content is reduced from above 0.5% to below 0.21%, and the quality is better than the corresponding vacuum gas oil. The extracted oil is rich in heavy aromatic hydrocarbons , And a certain percentage of FCC clarified oil mixture can be used as raw materials for the production of needle coke. 0 .2 5Mt / a coker gas oil solvent raffinate as catalytic cracking (or hydrocracking) blending materials, the annual increase in benefits 3 × 10 7RMB $ above.