UDS溶剂抗发泡性能的影响因素及控制  

Effect of multiple parameters on the anti-foaming performance and foaming control of formulated solvent UDS

作　　者：柯媛 沈本贤[1] 孙辉[1] 赵亚伟[1] 詹国雄[1] 

机构地区：[1]华东理工大学石油加工研究所,上海200237

出　　处：《化工进展》2017年第5期1628-1634,共7页Chemical Industry and Engineering Progress

基　　金："十二五"国家科技重大专项(2011ZX05017-005);中央高校基本科研业务费专项资金(22A201514010);上海市自然科学基金(16ZR1408100)项目

摘　　要：控制和消除天然气净化过程中醇胺溶剂的发泡对于确保净化装置安全、高效、优质运行至关重要。本文在模拟实验条件下考察了不同工艺参数对UDS溶剂抗发泡性能的影响,并建立了UDS溶剂抗发泡性能的半经验模型。实验结果表明,表面张力、溶剂黏度、溶剂密度等对UDS溶剂的抗发泡性能影响显著。建立的半经验模型能够较好地预测不同工况下UDS溶剂的抗发泡性能。各工艺参数对溶剂抗发泡性能影响大小顺序为:气体流量>CO_2负荷>温度>溶剂浓度。外界引入的杂质组分会改变UDS溶剂的表面性质,且杂质组分在溶剂中的富集导致溶剂理化性质对酸性组分浓度更为敏感,降低了溶剂的抗发泡性能。在工业装置上通过降低杂质组分浓度同时增加闪蒸气吸收塔塔径,有效提高了操作稳定性,实现了工业净化装置的安全平稳运行。Foaming control of alkanolamines is very important in high acid natural gas purification process. The effects of various parameters on anti-foaming performance of UDS solvent were studied. A semi-empirical foaming model was developed. The results indicated that the physical and chemical properties of UDS solvent, such as surface tension, viscosity and density, had significant impacts on anti-foaming performance of the solvent. The foaming model predicted the foaming performance of UDS solvent under different conditions very well. Four process parameters had distinct effect on the foam height. Specifically, the gas flow rate had the most effect, followed by CO2 loading, temperature and concentration of solvent. Surface properties of UDS solvent could be changed largely by impurities Due to enrichment of impurity components in solvent, the physical and chemical properties of solvent became more sensitive to the acid components. The present studies are helpful of solving the potential foaming problems and helping operations in industrial purification plants.

关 键 词：天然气脱硫 UDS溶剂 发泡控制 抗发泡性能模型 

分 类 号：TE645[石油与天然气工程—油气加工工程]