摘要
通过不同湍流装置对吸收塔的增效研究,提出了一种新型球式湍流提效结构。以装配有该新型湍流装置的热态吸收塔为研究对象,讨论气体流速(气速)、液气比(L/G)、浆液浓度及湍流装置纵横间距对其增效及阻力特性的影响。研究发现:相较于传统湍流增效装置,新型湍流装置可在较小压力下达到更高的脱硫效率,工业应用前景良好。并且增大气体流速或L/G,减小纵间距均可获得更大的脱硫效率,但压力随之增大。当进口烟气ρ(SO_2)为2000 mg/m^3,湍流层横纵间距为X_2∶Y_3,气速为3. 6 m/s,L/G为12 L/m^3,浆液浓度为10%时,脱硫效率最高,出口烟气SO_2浓度达到超低排放标准(≤35 mg/m^3)。
A new spherical turbulent structure was proposed by studying the efficiency enhancing effect of different turbulence devices on the absorption towers.With the absorption tower equipped with the new turbulence device being the study object, the influence of gas velocity, liquid/gas ratio (L/G), slurry concentration, and vertical and horizontal space of the turbulence device on efficiency enhancing effect and resistance characteristics was discussed.The study found that: the new turbulence device could achieve higher desulfurization efficiency under less pressure compared with the traditional turbulence efficiency enhancer, therefore, it had good prospects of industrial applications.For the new turbulence device, increasing the gas velocity or L/G, and reducing the vertical distance could obtain better desulfurization efficiency, while the pressure increased as well.When ρ(SO 2) of the inlet gas was 2000 mg/m^3, the transverse and longitudinal distance of the turbulent layer was X2∶ Y3, the gas velocity was 3.6 m/s, L/G was 12 L/m^3, and the slurry concentration was 10%, the desulfurization efficiency reached a peak value, and the SO 2 concentration of the outlet gas met the ultra-low emission standards.
作者
王兰蕙
王祖武
林晓炜
方志强
刘健
谷小兵
赵怡凡
杜明生
WANG Lan-hui;WANG Zu-wu;LIN Xiao-wei;FANG Zhi-qiang;LIU Jian;GU Xiao-bing;ZHAO Yi-fan;DU Ming-sheng(School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China;Datang Environment Industry Group Co., Ltd, Beijing 100080, China)
出处
《环境工程》
CAS
CSCD
北大核心
2019年第4期117-121,130,共6页
Environmental Engineering
基金
武汉市科技局2015年高新技术成果转化及产业化计划项目(2015060303010164)
关键词
湿法脱硫
湍流装置
热态实验
wet flue gas desulfurization
turbulence device
thermal experiment
