利用PIMS优化模型,对中国石油化工股份有限公司塔河分公司总加工流程进行了优化,对全厂工艺装置的结构、产品方案进行了优化比选,提出了优化后的全厂总加工流程,并进行了初步的效益测算对比.由于塔河重质原油的常压渣油直接作为延迟焦化装置的原料,没有催化裂化装置,缺少催化汽油组分,汽油调合组分少,为满足汽油调合要求,新建异构化装置,以重整拔头油为原料,增加异构化汽油的产量.针对石脑油加工,提出两个方案:方案一:600 kt/a(C7+)连续重整+300 kt/a (C5/C6)异构化；方案二:800kt/a(C6+)连续重整+150kt/a苯抽提+ 150 kt/a(C5)异构化.经过综合测算,方案一经济效益优于方案二,推荐采用方案一作为总加工流程方案,同时综合考虑新疆的地域特点、支线机场建设及西北地区冬季低凝柴油市场需求,对喷气燃料和低凝柴油的生产进行了研究.%The optimization model PIMS was applied in the overall process flow optimization of the refinery of SINOPEC Tahe Company. After optimization and comparison of the process unit configurations and product slates, an optimized overall process flow was proposed and economic benefits were preliminarily estimated and compared. As Tahe crude is a heavy crude, atmospheric residue is directly used as delayed coker feed. There is no FCC gasoline and little gasoline blending component because of no FCC unit. To meet the gasoline blending requirements, a grass-roots isomerization unit is built to produce isomerization gasoline with topped oil of reformer. Two process options are presented for processing naphtha, i. e. Option 1: 600,000 TPY (C7+) continuous catalytic reforming + 300,000 TPY (C5/C6) isomerization and Option 2: 800,000 TPY (C6+) continuous catalytic reforming + 150,000 TPY benzene extraction + 150,000 TPY isomeriza-tion. The comparisons show that Option 1 offers a better economic benefit than Option 2, and Option 1 is recommended. The production of jet fuel and low-freezing-point diesel is studied in consideration of specific conditions of Xinjiang area, construction of local airport and demand for low-freezing-point diesel in winter in China' s northwest region.
展开▼
