碱式硫酸铝脱硫富液SO_(2)超声解吸特性  

Ultrasonic enhanced SO_(2) desorption performance of basic aluminum sulfate rich desulfurization solution

作　　者：王俊娜 张子敬[1] 冯宇 云峰[1] 郭建民[1] 相亚军[1] 施永红[1] WANG Jun-na;ZHANG Zi-jing;FENG Yu;YUN Feng;GUO Jian-min;XIANG Ya-jun;SHI Yong-hong(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特市010051

出　　处：《内蒙古工业大学学报（自然科学版）》2021年第3期211-217,共7页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古工业大学科学研究项目(BS201923);国家自然科学基金项目(51966011,51566013);内蒙古自治区自然科学基金项目(2019MS05074)。

摘　　要：为实现烟气脱硫工艺中脱硫剂的高效再生及脱硫产物的资源利用,提出一种强化SO_(2)解吸性能和脱硫剂再生的新方法.利用超声波在溶液中的空化效应,研究了碱式硫酸铝(碱铝)脱硫富液超声解吸特性,揭示了超声强化热解吸性能的机理,得到了解吸温度和超声功率对SO_(2)解吸特性的影响规律.结果表明:超声解吸提高了热解吸的解吸率并缩短了解吸时间,超声解吸性能与解吸温度、超声功率有关.较高的解吸温度对解吸性能有利,相同超声功率下,解吸率随解吸时间的延长而提高但增幅减少.相同解吸温度下,同一时刻的解吸率并不随超声功率的提高而单调增大,而是存在一个最佳稳态空化功率,在此功率下可以达到最大的能量耦合而明显地提高解吸性能,实验环境的最佳超声解吸功率范围为597W~611W.In order to realize efficient regeneration of desulfurizer and resource utilization of desulfurized products in flue gas desulfurization,a new method to enhance SO_(2) desorption performance and desulfurizer regeneration was proposed in this paper.Based on the cavitation effect of ultrasonic wave in solution,the ultrasonic desorption characteristics of basic aluminum sulfate(aluminium base)rich desulfurization solution were studied.The mechanism of ultrasonic enhanced desorption performance was revealed,and the influence of adsorption temperature and ultrasonic power on the desorption characteristics of SO_(2) was obtained.The results showed that ultrasonic desorption improved the desorption rate and shortened the desorption time compared with thermal desorption.The performance of ultrasonic desorption was related to desorption temperature and ultrasonic power.Under the same ultrasonic power,the desorption rate increased with the increase of desorption time,but the growth rate decreased.Under the same desorption temperature,the desorption rate at the same time did not increase monotonously with the increase of ultrasonic power,but corresponded to an optimal steady-state cavitation power,at which the maximum energy coupling could be achieved and the desorption performance was significantly improved.As a result,the optimal ultrasonic desorption power range of the experimental environment was 597W~611W.

关 键 词：碱式硫酸铝 二氧化硫 超声波 解吸 

分 类 号：X773[环境科学与工程—环境工程]