辽河石化公司液态烃双脱装置优化设计

发布时间：2018-06-19 19:27

本文选题：液态烃 + 脱硫　；参考：《东北石油大学》2016年硕士论文

【摘要】：辽河石化公司液态烃双脱装置负责对全厂的液态烃进行脱硫,而其生产的液态烃又是生产甲基叔丁基醚(MTBE)的主要原料,MTBE更是调和汽油加入的重要添加剂之一。随着近年来国家对汽油质量标准提升,对MTBE质量要求也要不断提升。但因脱硫装置设备工艺陈旧,导致MTBE总硫含量高,汽油调和困难。为降低MTBE中的硫含量,液态烃双脱装置只能采取频繁更换碱液来调整产品质量,这样做一方面形成大量碱渣,增加处理费用,另一方面频繁换碱带来安全风险。在含硫量较高的焦化液态烃引入液态烃双脱装置脱硫后,使装置生产更为困难。为彻底解决这一系列问题,通过对液态烃脱硫脱硫醇生产技术分析,找出了辽河石化公司装置处理能力不足、操作与控制手段不健全、工艺陈旧措施不完善,没有反抽提手段等生产瓶颈问题。在能够克服装置运行问题的同时,本着降本增效、安全环保的原则,引入了市场上最新型的催化剂、助溶剂以及最新的技术-纤维膜脱硫技术,形成了一套合理的优化设计方案。应对市场对液态烃脱硫质量不断提升的要求,以此实现MTBE降低硫含量、汽油质量升级,能耗、剂耗降低,碱渣排放减少,降本增效等问题。本文对液态烃脱硫醇系统中催化剂碱液再生工艺的传统加温与常温工艺的对比,研究了不同催化剂或助剂在其中对碱液再生效果的影响,本次优化设计选用了常温再生工艺以及常规脱硫醇与纤维膜脱硫醇相结合的方式进行脱硫并将其应用于具体的化工生产过程,并得出了最终结论来帮助和指导实际化工生产过程的运行及工艺参数的调整,同时对新技术、新药剂等在化工等领域的应用具有一定的理论价值和实际意义。
[Abstract]:The liquid hydrocarbon double stripping unit of Liaohe Petrochemical Company is responsible for desulphurizing the liquid hydrocarbon in the whole plant, and the liquid hydrocarbon produced by the plant is one of the important additives for the production of methyl tert Ding Ji ether. With the improvement of gasoline quality standards in recent years, MTBE quality requirements should be continuously improved. However, due to the old process of desulfurization equipment, MTBE total sulfur content is high, gasoline blending is difficult. In order to reduce the sulfur content in MTBE, the liquid hydrocarbon double stripping unit can only adjust the quality of the product by frequently changing the alkali liquid. On the one hand, it forms a large amount of alkali residue, increases the treatment cost, and on the other hand, frequent alkali exchange brings the safety risk. It is more difficult to produce liquid hydrocarbon in coking plant after it is desulphurized with liquid hydrocarbon double degassing device with high sulfur content. In order to solve this series of problems thoroughly, by analyzing the production technology of liquid hydrocarbon mercaptan, it is found out that the treatment capacity of the plant in Liaohe Petrochemical Company is insufficient, the operation and control means are not perfect, and the old process measures are not perfect. There are no back extraction methods and other production bottlenecks. In order to overcome the operational problems of the plant, and in line with the principle of reducing cost and increasing efficiency, safety and environmental protection, the latest catalyst, solvent and the latest technology, fiber membrane desulphurization, have been introduced in the market. A set of reasonable optimum design scheme has been formed. In order to meet the requirements of the market for increasing the quality of liquid hydrocarbon desulfurization, MTBE can reduce sulfur content, upgrade gasoline quality, reduce energy consumption, reduce agent consumption, reduce alkali slag emissions, reduce cost and increase efficiency, etc. In this paper, the effects of different catalysts or auxiliaries on the regeneration effect of alkaloids in liquid hydrocarbon desulfurization system were studied by comparing the traditional heating process with normal temperature process. The optimum design has selected the normal temperature regeneration process and the combination of conventional desulfurization and fiber membrane desulphurization and applied it to the specific chemical production process. The final conclusions are obtained to help and guide the operation of the actual chemical production process and the adjustment of the process parameters. At the same time, it has certain theoretical value and practical significance for the application of new technology and new chemicals in the chemical industry and other fields.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE96

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