摘要
吸收塔冒泡问题一直是困扰火电机组的难题之一,尤其是在燃烧低质量动力煤稳定高负荷运行的情况下。多年来,该问题的研究局限于控制泡沫溢流,较少涉及表面活性剂,而现有的吸收塔冒泡研究缺乏对表面活性剂来源与种类的阐述。以浙江省某电厂1000 MW机组脱硫系统典型冒泡现象为研究对象,通过生化检测检测对蛋白质浓度、酸碱性、离子浓度、粉体浓度、粉煤灰浓度及其他各种可能的有机物种类进行判断,最后通过测定不同时期蛋白质含量,模拟浆液塔运行的起泡性能研究、气泡微观过程研究、表面张力研究,对浆液起泡稳泡关键因子进行确定,并判断可能的蛋白质积累,并找到导致吸收塔冒泡的表面活性剂。研究结果可为燃煤电厂脱硫系统解决冒泡问题提供一定的参考。
Foaming in absorption tower has ever been one of main problems present in thermal power units,especially when low⁃quality thermal coal is burnt for stable high⁃load operation.Research for years has majorly beenfocused on g foam overflow control.Few studies involve surfactants and their sources and types.In this paper,the typical bubbling phenomenon indesulfurization system of 1000 MW coal⁃fired power plant in Zhejiang Province was taken as studied object,protein concentration,pH,ion concentration,powder concentration,fly ash concentration and other possible organic species were judged by biochemical detection,and finally key factors of slurry foaming and foaming stability were determined by quantitative determination of protein content in different periods,the foaming performance of simu⁃lated slurry tower operation,bubble microprocess research,and surface tension study were determined,and possible protein accumulation was judged.And find the surfactant that causes the absorption tower to bubble.The research results provide a certain reference for solving the bubble problem of the desulfurization system of coal⁃fired power plants.
作者
王文欣
WANG Wen-xin(Zhejiang Energy Group Research Institute,Hangzhou 311121,China;Key research laboratory of high efficiency energy saving and pollutant control technology in thermal power generation of Zhejiang Province,Hangzhou 311121,China)
出处
《能源工程》
2023年第3期66-73,共8页
Energy Engineering
关键词
燃煤电厂
吸收塔
泡沫
表面活性剂
蛋白质
coal⁃fired power plant
absorption tower
foaming
surfactant
protein
