Abstract:

The planning and design of 40 MM TPY refining and chemical integration project of Zhejiang Petroleum & Chemical Co., Ltd. was summarized, and 7 key technical problems were solved emphatically. The crude oil adopted the design scheme of high sulfur and high TAN; Heavy oil processing technology adopted combination of RHDS+RFCC+delayed coking+slurry bed residue hydrocracking, which is a combined process mode of hydrogenation and decarburization; Diesel oil and wax oil adopted hydrocracking process to produce more high-quality heavy naphtha, and increase heavy naphtha production by 10.85 MM TPY; Light hydrocarbons(C₂～C₅) produced by refining process are supplied to two 1.4 MM TPY steam cracking units and one 0.6 MM TPY propane dehydrogenation unit; Comprehensive utilization of seawater to provide all production water for the project; Adopt large-scale, standardized and modular design. After the implementation of the project, the scale of main process units and technical and economic indicators have reached the world-class level, and molecular refining has been achieved. The refining chemical integration rate of the project was up to 62.4%, and the yield of product oil was only 37.7%.

Key words: refining and chemical integration, crude oil variety, heavy oil processing, light dydrocarbon utilization, heavy naphtha, fuel, H2, comprehensive utilization of seawater

摘要：

总结了浙江石油化工有限公司40 Mt/a炼化一体化项目的规划设计，重点解决了7个关键技术问题。设计原油采用高硫高酸方案；重油加工工艺采用固定床渣油加氢脱硫+重油催化裂化+延迟焦化+渣油浆态床加氢裂化工艺，是加氢和脱碳组合工艺模式；柴油和蜡油采用多产优质重石脑油的加氢裂化工艺，增产重石脑油10.85 Mt/a;炼化过程副产的轻烃(C₂～C₅)供给2套1.4 Mt/a蒸汽裂解装置和1套0.6 Mt/a丙烷脱氢装置；煤和自产的石油焦采用气化工艺满足项目清洁工艺燃料和氢气的供应；综合利用海水，为项目提供全部生产用水；采用大型化、标准化和模块化设计。项目实施后，主要工艺装置规模和技术经济指标达到了世界级水平，实现了分子炼油，项目炼化一体化率高达62.4%,成品油收率仅为37.7%。

关键词: 炼化一体化, 原油品种, 重油加工, 轻烃利用, 重石脑油, 燃料, 氢气, 海水综合利用