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轻汽油醚化装置扩能改造及效果分析
Analysis of the Capacity Expansion and Retrofit of the Light Gasoline Etherification Plant
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- DOI:
- 作者:
- 杨 琪1，张 义1，赵善侨1，奉 娟1，高 伟2
Yang Qi 1，Zhang Yi 1，Zhao Shanqiao 1，Feng Juan 1, Gao Wei 2
- 作者单位:
- 1. 浙江石油化工有限公司；2. 浙江省绿色石化技术创新中心
1. Zhejiang Petrochemical Co., Ltd.; 2. Zhejiang green petrochemical technology Innovation centerr
- 关键词:
- 汽油醚化；改造升级；醇烯比；塔内件；空速
gasoline etherification；transformation and upgrading；alcohol-olefin ratio；tower internals；space velocity
- 摘要:
- 摘要：文中以某石化企业70×104 t/a轻汽油醚化装置为研究对象，针对全厂升级改造背景，经工艺优化和设备改造，装置处理能力提升了20%，达到84×104 t/a。针对实际原料活性烯烃含量较原始设计含量低4.713%（由23.518%降至18.805%）的特性，结合LNE-3工艺特点重新设计工艺参数，采用催化蒸馏与 2段深度醚化技术提升反应效率，重点对反应器和催化蒸馏模块进行空速核算与操作优化。改造后，装置运行稳定，各反应器空速均控制在设计范围内（≤1.2 h-1），C5活性烯烃转化率稳定在92.00%以上，甲醇消耗量增加8 960 t/a，全年为公司增效1 792万元。该研究为同类装置扩能改造提供了基于实际工况的设计方法与实践经验，证实通过工艺参数优化与设备适应性改造可实现提质增效目标，具有显著的工业推广价值。
Abstract：This paper takes a 70 × 104 t / a light gasoline etherification unit of a petrochemical enterprise as the research object.Against the background of the overall plant upgrading and transformation，the processing capacity of the unit is increased by 20% to84×104 t/a through process optimization and equipment modification. Aiming at the characteristic that the active olefin content in theactual raw material is 4.7% lower than the original design（decreasing from 23.518% to 18.805%），the process parameters areredesigned by combining the characteristics of the LNE-3 process. The catalytic distillation and two-stage deep etherificationtechnology are adopted to improve the reaction efficiency，with emphasis on the space velocity calculation and operationoptimization of the reactor and catalytic distillation module. After the transformation，the unit operates stably，the space velocity ofeach reactor is controlled within the design range（≤1.2 h-1），the conversion rate of C5 active olefins stably reaches more than92.00%，the methanol consumption increases by 8 960 t/a，and the annual efficiency increase for the whole plant is 17.92 millionyuan. This study provides a design method and practical experience based on actual working conditions for the capacity expansionand transformation of similar units，and confirms that the goal of quality improvement and efficiency increase can be achievedthrough process parameter optimization and equipment adaptive transformation，which has significant industrial promotion value.