CAJ | 학술논문

在使用膜吸收装置脱除燃煤电厂尾气中二氧化碳的实际应用中，膜吸收二氧化碳系统装配于湿法烟气脱硫系统（WFGD）出口是最适宜的选择。经过湿法脱硫的烟气中含有一定量的细颗粒物，这些颗粒物可能会影响膜的性能，因此有必要揭示细颗粒物对膜吸收二氧化碳的影响。本文采用模拟实验装置，选取飞灰、硫酸钙、硫酸铵3种颗粒物，考察了它们对聚丙烯（PP）中空纤维膜吸收二氧化碳的影响。结果表明：3种颗粒物通过膜组件时，均会在膜表面沉积，导致二氧化碳脱除效率下降；膜吸收二氧化碳的性能与颗粒物沉积程度呈负相关；3种颗粒物对膜吸收二氧化碳的影响程度从大到小依次为硫酸钙、硫酸铵、飞灰；颗粒物在膜表面沉积后很难被气体反吹，这会使膜基本失效。
재사용막흡수장치탈제연매전엄미기중이양화탄적실제응용중，막흡수이양화탄계통장배우습법연기탈류계통（WFGD）출구시최괄의적선택。경과습법탈류적연기중함유일정량적세과립물，저사과립물가능회영향막적성능，인차유필요게시세과립물대막흡수이양화탄적영향。본문채용모의실험장치，선취비회、류산개、류산안3충과립물，고찰료타문대취병희（PP）중공섬유막흡수이양화탄적영향。결과표명：3충과립물통과막조건시，균회재막표면침적，도치이양화탄탈제효솔하강；막흡수이양화탄적성능여과립물침적정도정부상관；3충과립물대막흡수이양화탄적영향정도종대도소의차위류산개、류산안、비회；과립물재막표면침적후흔난피기체반취，저회사막기본실효。
The outlet of wet flue gas desulfurization(WFGD) system is the best location in the application of using membrane adsorption equipment in the removal of carbon dioxide from flue gas in coal-fired power plants. Wet-process desulfurized flue gas contains fine particulate matters which may deteriorate the performances of membrane. In order to obtain a better understanding on the influences of particulate matters on CO2 adsorption,this research investigated the capture process of carbon dioxide using polypropylene(PP) hollow fiber membrane from flue gas containing three kinds of particles(coal-fired fly ash,calcium sulfate,ammonium sulfate). The results showed that fine particulate matters reduced carbon dioxide removal efficiency due to deposition on the membrane surface. The results also demonstrated a negative correlation between the performance of CO2 adsorption by membrane and the deposit degree of fine particulate matters. Calcium sulfate affected the performances of CO2 adsorption by membrane the most among the three materials,and coal-fired fly ash had least influences on CO2 adsorption. It was difficult to back flush the fine particulate matters adsorbed on the surface of membrane,resulting invalid membrane.