油田伴生气脱硫净化过程问题研究及对策
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摘要
介绍了国内油田伴生气脱硫净化过程中存在的主要问题:一是伴生气脱硫塔效率较低,产品天然气质量不达标;二是脱硫塔运行过程中频繁出现发泡拦液现象,脱硫塔无法稳定运行;三是由于胺液的黏度发生改变导致脱硫塔传质效率低、产品硫含量超标。采用FMP塔盘技术可以实现将传统脱硫塔的鼓泡传质过程改为立式喷射态传质过程;可以彻底解决脱硫塔发泡拦液所造成的运行不稳定和脱硫效率低的问题。
This paper introduces three main problems in the desulfurization and purification process of oilfields associated gas in China.Firstly,the efficiency of the desulfurization tower is very low,leading to unqualified natural gas product.Secondly,the desulfurization tower cannot run stably and there happens frequently the phenomena that liquid is blocked by foaming in the operation process. Thirdly,the mass transfer efficiency in desulfurization tower is low mainly due to the change of the viscosity of the amine solution,which in turn results in excessive sulfur content in the product.The FMP tray technology can help to change the traditional bubble-mass transfer process in desulfurization tower into a vertical jet state transfer process,which can solve thoroughly the problems of unstable operation and low desulfurization efficiency caused by foaming to block liquid in desulfurization tower.
This paper introduces three main problems in the desulfurization and purification process of oilfields associated gas in China.Firstly,the efficiency of the desulfurization tower is very low,leading to unqualified natural gas product.Secondly,the desulfurization tower cannot run stably and there happens frequently the phenomena that liquid is blocked by foaming in the operation process. Thirdly,the mass transfer efficiency in desulfurization tower is low mainly due to the change of the viscosity of the amine solution,which in turn results in excessive sulfur content in the product.The FMP tray technology can help to change the traditional bubble-mass transfer process in desulfurization tower into a vertical jet state transfer process,which can solve thoroughly the problems of unstable operation and low desulfurization efficiency caused by foaming to block liquid in desulfurization tower.
引文
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[2]张卫明,张桂岩,贾振勇.低压气小气量轻烃回收工艺技术探讨[J].河南化工,2011,(22):25-26.
[3]胥金江,韩薇,杨肇琰,等.新疆油田伴生气增压脱水工艺的应用与优化[J].化工技术与开发,2011,35(6):4-7.
[4]李宏,胡泓.CNG母站与轻烃回收装置合建站工艺流程优化[J].石油工程建设,2009,30(2):6-11.
[5]孙青冶,孙胜勇.天然气浅冷装置轻烃稳定系统工艺流程优化[J].中国外资,2012,(13):216-225.
[6]周诗岽,王恒,王树立,等.MDEA脱硫液的表面张力研究[J].常州大学学报,2017,26(3):88-92.
[7]方静,王宝东,李春利,等.隔板塔共沸精馏分离二氯甲烷乙腈水硅醚体系[J].化工学报,2013,64(3):963-969.
[8]熊运涛,吴学东,郭庆生,等.天然气净化脱硫研究进展[J].当代化工,2013,42(3):288-290.
[9]王开岳.天然气脱硫脱碳工艺发展进程的回顾[J].油气加工,2011,29(1):15-20.
[10]Alvarez E,Rendo R,Sanjurjo B,et al.Surface tension of binary mixtures of water+N-methyldiethanolaine and ternary mixtures of this amine and water with monoethanolamine,diethanolamine,and 2-Amino-2-methyl-1-propanol from 25 to 50℃[J].Journal of Chemical and Engineering Data,1998,43:1027-1029.