渣油催化裂解生产乙烯和丙烯装置运行优化

陕西延长中煤榆林能源化工有限公司1.5 Mt/a渣油催化裂解制烯烃装置采用DCC-plus反应器结构设计，设计原料为延长石油的常压渣油，主要目的产品为乙烯和丙烯。自2014年投产运行以来，该装置原料油加工量及主要操作条件基本平稳，原料油中铁含量波动，通过操作优化、装置改造、催化剂改进等技术攻关，乙烯和丙烯收率稳步提高。标定期间，以延长石油的常压渣油为原料，装置负荷率100%，乙烯收率为13.82%、丙烯收率为23.30%，双烯收率达到37.12%，装置达产达标。

OPERATION OPTIMIZATION OF RESID DCC UNIT FOR ETHYLENE AND PROPYLENE PRODUCTION

The 1.5 Mt/a resid DCC uint for ethylene and propylene production in Shaanxi Yanchang Coal Yulin Energy and Chemical Co., Ltd. adopts the design of DCC-plus reactor configuration. The design feedstock is atmospheric resid of Yanchang oilfield, and the main target products are ethylene and propylene. Since the unit was put into operation in 2014, the feedstock processing capacity and main operating conditions of the unit have been basically stable, and the iron content in the feed oil has fluctuated. Through technical breakthroughs such as operation optimization, unit revamping and catalyst improvement, the yield of ethylene and propylene has been steadily improved. During the calibration period, using the atmospheric resid of Yanchang oilfield as feedstock, the unit throughput was 100%, the ethylene yield was 13.82%, the propylene yield was 23.30%, the ethylene plus propylene yield reached 37.12%, and the unit operation could meet the design requirements.