彭州1井撬装脱硫装置及配套工程设计

发布时间：2018-03-21 06:39

本文选题：含硫天然气　切入点：双塔脱硫工艺　出处：《中国石油大学(华东)》2015年硕士论文　论文类型：学位论文

【摘要】：为了配合川西海相区块含硫气井的开发,以彭州1井天然气组分为基准,对天然气脱硫工艺中的双塔脱硫工艺、生物脱硫工艺和MDEA+自循环LO-CAT工艺从安全性、投资及运行成本等方面进行了详细的研究对比。结果表明,双塔脱硫工艺的安全性高、投资低、运行成本低、装置启动时间短、基本没有废液产生、成撬性好,富液集输管道的安全性高,对区块开发富液集输工艺的适应性好,最终选择了双塔脱硫工艺进行天然气脱硫及硫磺回收。同时对天然气脱水和硫磺成型工艺进行了优选对比,结果表明,在脱水方面,由于本工程水露点的要求较低,且处理气量较大,与固体吸附法和溶剂吸收法相比,三甘醇脱水工艺更适应于本工程;在熔硫方面,间歇熔硫工艺在能耗、排污以及药剂消耗量等方面较连续熔硫具有明显优势;在硫磺成型方面,水冷造粒工艺成熟可靠,优势较大。为了缩短工期、降低成本、提高质量,并结合试采的需要,对整套装置进行了模块化、撬装化设计,整套装置共设计10个模块、45个撬块,同时对模块化建造及运输回装提出了要求。最后对脱硫装置配套的天然气集输系统进行了设计,确定了采用加热工艺防止节流降压时生成水合物;采用重力分离器进行气液分离;经脱硫装置处理后的净化气外输至彭都管线的庆兴阀室。
[Abstract]:In order to cooperate with the development of sulfur-bearing gas wells in the marine area of western Sichuan, taking the natural gas components of well Pengzhou 1 as the benchmark, the double tower desulphurization process, the biological desulfurization process and the MDEA self-circulating LO-CAT process in the natural gas desulfurization process are considered to be safe. The results show that the double tower desulphurization process has high safety, low investment, low operation cost, short start-up time, no waste liquid, and good prying property. Because of its high safety and adaptability to the development of liquid-rich gathering and transportation technology in the block, the double tower desulfurization process is selected for natural gas desulfurization and sulfur recovery. At the same time, the natural gas dehydration and sulfur forming processes are optimized and compared. The results show that the dewatering process of triethylene glycol is more suitable for this project than solid adsorption method and solvent absorption method because of the low dew-point requirement and large amount of gas treatment in the water of the project, and in the aspect of sulfur melting, the dewatering process of triethylene glycol is more suitable for this project than solid adsorption method and solvent absorption method. The intermittent sulfur melting process has obvious advantages over continuous sulfur melting in the aspects of energy consumption, sewage discharge and pesticide consumption, while in sulfur forming, the water-cooled granulation process is mature and reliable, and has a great advantage, in order to shorten the time limit, reduce the cost, improve the quality, etc. Combined with the needs of the test and mining, the whole set of equipment was modularized, prying design, the whole device designed a total of 10 modules, 45 pry blocks, At the same time, the requirements of modularization construction and transportation reload are put forward. Finally, the natural gas gathering and transportation system of desulphurization unit is designed, and the heating process is adopted to prevent the formation of hydrates during throttling and lowering pressure. Gravity separator was used to separate gas and liquid and purified gas was transported to Qingxing valve chamber of Pengdu pipeline after desulfurization.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE644

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