Study on Flue Gas Desulfurization Process with Selective SO2 Removal by N-formylmorpholine

论文摘要

Absorptive separation for resource utilization by selective SO2 removal from flue gas is a potential method applicable in practice.A flue gas desulfurization process for SO2 utilization by selective absorption in a lab-scale absorption tower at atmospheric pressure using N-formylmorpholine（NFM）as the absorbent is developed to capture and concentrate the SO2 from flue gas,in which the CO2 content is several orders higher than that of SO2.The investigation of the effects of different operating conditions on the SO2 removal efficiency shows that the SO2 removal efficiency can be obviously enhanced by increasing NFM concentration,or decreasing the absorption temperature,the superficial gas velocity,the gas-liquid ratio,or the SO2 concentration in absorption solution.Under the optimum operating conditions（covering a temperature of 40 ℃,a superficial gas velocity of <0.0165 m/s, a gas-liquid ratio of 200-250,a SO2 concentration in lean NFM solution of 0-10 mg/L,and a NFM concentration of 3 mol/L）,the SO2 removal rate reaches over 99.5% while the absorption of CO2 is negligible.Similarly,the SO2 removal rate is as high as 99.5% obtained in consecutive absorption-desorption cycles.Desorption experiment results indicate that the absorption of sulfur dioxide is completely reversible and the release of SO2 from NFM is very easy and rapid at 104 ℃.The absorption simulation result for desulfurization of flue gas vented from the industrial catalytic cracking regenerator shows that 98.0% of SO2 can be absorbed in the absorber and most of them are released in the desorber.The experimental and simulated results show that the desulfurization ability and regenerability of NFM solution is encouraging for the development of FGD process to capture the SO2 from flue gas.

论文目录

文章来源

类型: 期刊论文

作者: Long Jian,Wang Jin,Fan Chen,Yang Minglei,Zhong Weimin

来源: China Petroleum Processing & Petrochemical Technology 2019年02期

年度: 2019

分类: 工程科技Ⅰ辑,工程科技Ⅱ辑

专业: 无机化工,有机化工,环境科学与资源利用,工业通用技术及设备

单位: Key Laboratory of Advanced Control and Optimization for Chemical Processes, Ministry of Education,East China University of Science and Technology,SINOPEC Zhenhai Refining and Chemical Co., Ltd.

基金: supported by National Natural Science Foundation of China (Major Program: 61590923),International (Regional) Cooperation and Exchange Project(No. 61720106008),National Natural Science Foundation of China (No. 61873093),National Science Fund for Distinguished Young Scholars (61725301),the Fundamental Research Funds for the Central Universities

分类号: TQ028.17;X701.3

页码: 85-94

总页数: 10

文件大小: 696K

下载量: 12

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