基于酸不溶物含量预判吸收塔浆液起泡溢流的试验研究  

Experimental Study on the Foaming Overflow Prediction of Absorption Tower Slurry Based on the Content of Acid-insoluble Substances

作　　者：林朝扶 徐建 刘德庆 LIN Chaofu;XU Jian;LIU Deqing(Electric Power Research Institute of Guangxi Power Grid Co.,Ltd.,Guangxi Nanning 530023,China;Guangxi Guineng Technology Development Co.,Ltd.,Guangxi Nanning 530007,China)

机构地区：[1]广西电网有限责任公司电力科学研究院,广西南宁530023 [2]广西桂能科技发展有限公司,广西南宁530007

出　　处：《广西电力》2019年第4期10-14,51,共6页Guangxi Electric Power

摘　　要：石灰石-石膏湿法烟气脱硫系统吸收塔浆液从起泡到溢流是一个持续渐变的过程,选择1个可以反映浆液起泡溢流的特征指标以预判吸收塔浆液是否出现起泡溢流,对确保脱硫系统的安全运行具有重要意义。对浆液及泡沫中酸不溶物含量、浆液中酸不溶物的来源及对浆液起泡的影响进行分析,结果表明:吸收塔浆液中酸不溶物含量大于5%时,吸收塔浆液起泡并产生溢流可能性较大,当浆液中酸不溶物含有少量的未燃烧完全的碳、油颗粒时,酸不溶物含量即使小于5%,吸收塔浆液都可能出现起泡并产生溢流。试验还表明,浆液的表面张力系数的降低是浆液产生起泡前提条件但不是充分条件。由于浆液的酸不溶物含量分析具有简便、准确、快速等优点,作为预判吸收塔浆液起泡溢流的特征指标具有现实意义。The transition from foaming to overflow of the absorption tower slurry in limestone-gypsum wet flue desulfurization system is a continuous and gradual process.It is important to choose an index,which can represent the characteristics of the foaming overflow of the slurry,to predict whether the foaming overflow of the absorption tower slurry will occur or not,so that secure operation of the desulfurization system is ensured.The content of the acid-insoluble substances in the slurry and the foam,the sources of the acid-insoluble substances and its influence on the slurry foaming are analyzed.Results show that if the content of the acid-insoluble substances in the absorption tower slurry is more than 5%,the possibility of foaming and overflow of the absorption tower slurry is higher.If there is a small amount of particles of incompletely burned carbon or oil in the acid-insoluble substances of the slurry,the foaming and overflow will both possibly occur in the absorption tower slurry even if the content of the acid-insoluble substances is less than 5%.Tests also show that the surface tension coefficient of the slurry is the prerequisite condition of the slurry foaming but not the sufficient condition of it.Because the analysis of the acid-insoluble content of the slurry is simple,accurate and fast,it is of practical significance for it to be taken as a characteristic index in the foaming overflow prediction of the absorption tower slurry.

关 键 词：酸不溶物 吸收塔浆液 起泡溢流 表面张力系数 

分 类 号：X773[环境科学与工程—环境工程]