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PVDF疏水膜冷凝处理含氨湿气过程的研究

作者：龙苏苏¹，²，周玥¹，²，汪朝晖¹，²，崔朝亮¹，²

单位： 1. 南京工业大学化工学院，材料化学工程国家重点实验室 2. 南京工业大学国家特种分离膜工程技术研究中心

关键词：膜冷凝；聚偏氟乙烯；水回收率；含氨湿气

DOI号： 10.16159/j.cnki.issn1007-8924.2024.05.016

分类号： TQ028.8

出版年,卷(期):页码： 2024,44(5):135-141

摘要：

研究了膜冷凝（MC）法处理含氨湿气的过程，基于自行搭建的小试装置，选择不同孔径聚偏氟乙烯（PVDF）商品膜，考察了MC过程中进料气体污染物浓度、进气流量、进气温度、膜表面温度差ΔT及膜孔径等因素对MC的水回收性能和凝结水中NH3-N含量的影响规律.结果表明，进料气体流量为1.0 L/min，NH3-N质量浓度为400 mg/L，进料温度为50 ℃且ΔT为20 ℃时,可以获得较高的水回收性能和较低NH3N含量的凝结水.

This study investigates the process of treating ammonia-laden moist gas using the membrane condensation (MC) method. Based on a self-constructed laboratory-scale apparatus, different pore sizes of commercially available polyvinylidene fluoride (PVDF) membranes were selected to examine the effects of inlet gas pollutant concentration, inlet gas flow, inlet gas temperature, temperature difference across the membrane surface (ΔT), and membrane pore size on water recovery performance and the NH3-N content in the condensate. The results indicate that the feed gas flow rate of 1.0 L/min, pollutant concentration of 400 mg/L, feed temperature of 50 ℃, and ΔT of 20 ℃ can achieve higher water recovery performance with condensate containing lower levels of pollutants.

基金项目：

国家自然科学基金项目（22078146）

作者简介：

龙苏苏（1999-），女，重庆梁平人，硕士生，研究方向为材料与化工.*通讯作者，E-mail：zcui@njtech.edu.cn

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