發(fā)布時(shí)間：2018-06-19 19:27

  本文選題：液態(tài)烴 + 脫硫　； 參考：《東北石油大學(xué)》2016年碩士論文

【摘要】：遼河石化公司液態(tài)烴雙脫裝置負(fù)責(zé)對全廠的液態(tài)烴進(jìn)行脫硫,而其生產(chǎn)的液態(tài)烴又是生產(chǎn)甲基叔丁基醚(MTBE)的主要原料,MTBE更是調(diào)和汽油加入的重要添加劑之一。隨著近年來國家對汽油質(zhì)量標(biāo)準(zhǔn)提升,對MTBE質(zhì)量要求也要不斷提升。但因脫硫裝置設(shè)備工藝陳舊,導(dǎo)致MTBE總硫含量高,汽油調(diào)和困難。為降低MTBE中的硫含量,液態(tài)烴雙脫裝置只能采取頻繁更換堿液來調(diào)整產(chǎn)品質(zhì)量,這樣做一方面形成大量堿渣,增加處理費(fèi)用,另一方面頻繁換堿帶來安全風(fēng)險(xiǎn)。在含硫量較高的焦化液態(tài)烴引入液態(tài)烴雙脫裝置脫硫后,使裝置生產(chǎn)更為困難。為徹底解決這一系列問題,通過對液態(tài)烴脫硫脫硫醇生產(chǎn)技術(shù)分析,找出了遼河石化公司裝置處理能力不足、操作與控制手段不健全、工藝陳舊措施不完善,沒有反抽提手段等生產(chǎn)瓶頸問題。在能夠克服裝置運(yùn)行問題的同時(shí),本著降本增效、安全環(huán)保的原則,引入了市場上最新型的催化劑、助溶劑以及最新的技術(shù)-纖維膜脫硫技術(shù),形成了一套合理的優(yōu)化設(shè)計(jì)方案。應(yīng)對市場對液態(tài)烴脫硫質(zhì)量不斷提升的要求,以此實(shí)現(xiàn)MTBE降低硫含量、汽油質(zhì)量升級,能耗、劑耗降低,堿渣排放減少,降本增效等問題。本文對液態(tài)烴脫硫醇系統(tǒng)中催化劑堿液再生工藝的傳統(tǒng)加溫與常溫工藝的對比,研究了不同催化劑或助劑在其中對堿液再生效果的影響,本次優(yōu)化設(shè)計(jì)選用了常溫再生工藝以及常規(guī)脫硫醇與纖維膜脫硫醇相結(jié)合的方式進(jìn)行脫硫并將其應(yīng)用于具體的化工生產(chǎn)過程,并得出了最終結(jié)論來幫助和指導(dǎo)實(shí)際化工生產(chǎn)過程的運(yùn)行及工藝參數(shù)的調(diào)整,同時(shí)對新技術(shù)、新藥劑等在化工等領(lǐng)域的應(yīng)用具有一定的理論價(jià)值和實(shí)際意義。
[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.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TE96

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