冰晶石生产废液在循环冷却水系统中的应用  

Application of fluorine-containing wastewater from cryolite production to the circulating cooling water system

作　　者：周军[1] 买文宁[2] 叶长明[1] 张宏忠[1] 陈绍伟[3] 

机构地区：[1]郑州轻工业学院材料与化工学院河南省表界面重点实验室,河南郑州450002 [2]郑州大学环境与水利学院,河南郑州450002 [3]同济大学环境科学与工程学院,上海200092

出　　处：《工业水处理》2011年第2期89-92,共4页Industrial Water Treatment

摘　　要：针对修武化肥厂循环水系统因结垢导致传热效果降低的现象,选择先剥离黏泥,再采用废酸性冰母液在线清洗的方案对其进行综合处理,经分析清洗下来的钙垢量折合成CaCO3垢量为4764kg,清洗下来的铁锈垢量折合成Fe2O3垢量为75kg,除垢率达到95%以上,洗净率达到90%以上,符合国家要求。清洗过程中监测到碳钢挂片腐蚀速率为1.4929g/(m2.h),远低于行业标准的6g/(m2.h),确保了装置的安全运行。Aim ing at the phenomenon that the heat-transfer effect gets lower due to the scaling in the circulating water system in Xiuwu Fertilizer Plant,the sticky sludge must be stripped first,and then,acidic fluoride-containing wastewater from cryolite has been used for on-line cleaning,so as to carry on the integrated treatment process.The results show that the calcium cleaned down can be converted to 4 764 kg of CaCO3 scale and the rust scale cleaned down can be converted to 75 g of Fe2O3 scale.The scale removing rate reaches 95% or over and cleaning rate reaches 90% or over.They meet the requirements of national standard.The corrosion rate of carbon steel hanging plate monitored in the process of cleaning is 1.492 9 g/（m2·h）,much lower than the trade standard 6 g/（m2·h）.Safe operation has thus been assured.

关 键 词：循环冷却水系统 化学清洗 废酸性冰母液 

分 类 号：X703.1[环境科学与工程—环境工程]