文献类型：期刊文献

英文题名：Medium-particle extraction technology and derivative processes for separation and purification of emulsified amine solutions

作者：Dai, Pinyi[1];Wen, Jiazheng[1];Gu, Yong[1];Xue, Jinwei[1];Cao, Zhongning[1];Yang, Qiang[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China

年份：2026

卷号：92

外文期刊名：JOURNAL OF WATER PROCESS ENGINEERING

收录：;Scopus(收录号：2-s2.0-105046965382);WOS:【SCI-EXPANDED(收录号:WOS:001850017000002)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 52025103) and the Xplorer Prize (Grant No. XPLORER-2022-1034) .

语种：英文

外文关键词：Emulsified amine solution; Medium-particle extraction; Hydrophilic-hydrophobic particles; Oil-solid simultaneous removal; Particle-bed coalescence

摘要：To efficiently purify oil-containing amine solutions in theN-methyldiethanolamine desulfurization, a hydrophilic-hydrophobic medium-particle extraction (MPE) technology for simultaneous oil and solid removal was developed. Integrated with adaptive mini-swirl flotation and fiber coalescence, this process was validated by a pilot-scale refinery experiment. Results showed that inlet oil content (1650-4100 mg/L) decreased to 310-705 mg/L, achieving 85% maximum separation efficiency. The median oil droplet diameter decreased from 2.31 to 0.99 mu m. At an operational flow rate of 5 m(3)/h, the maximum daily oil recovery volume reached similar to 172.01 L. Within the three-stage treatment system, the MPE separator recovered more than 50% of the total oil. The system operated using the inherent flow pressure, with a maximum pressure drop of 0.22 MPa, requiring only weekly backwashing for stability. Gas chromatography-mass spectrometry analysis revealed a reduction in organic compounds from 60 to 39. The experimental setup and newly developed process equipment efficiently purified the amine solution. This integrated approach improves the quality of the circulating amine solution, ensures stable operation of downstream processes such as dry gas desulfurization and sulfur recovery, and facilitates diesel recovery, providing notable economic benefits. These findings suggest substantial potential of the technology for industrial-scale implementation.