%0 Journal Article %T 重庆主城区钻井地热水结垢及腐蚀趋势研究<br>Research of the Scaling and Corrosion Tendency of Geothermal Well Waters in the Main Urban Area of Chongqing %A 余琴 %A 杨平恒 %A 程群 %A 张媚 %A 谢正兰< %A br> %A YU Qin %A YANG Ping-heng %A CHENG Qun %A ZHANG Mei %A XIE Zheng-lan %J 西南大学学报(自然科学版) %D 2017 %R 10.13718/j.cnki.xdzk.2017.10.014 %X 地热水对金属管道的结垢与腐蚀是其开发利用中常见的技术和环境问题.该文对重庆主城区36口钻井地热水物理水化学特征进行分析,采用指数法判定地热水结垢腐蚀趋势和主要的结垢物,提出阻垢防腐建议.结果表明:理论上大部分钻井地热水有轻微或严重的碳酸钙垢和硫酸钙垢,无硅酸钙垢形成,引起结垢的矿物主要为方解石等碳酸盐岩矿物;大部分钻井地热水对金属设备无腐蚀性.而实际上,重庆大部分钻井地热水有轻微的碳酸钙结垢现象,金属管道有轻微腐蚀,与指数判断结果并不完全相符.建议采用流体预处理、阻垢涂层的应用与开发等除垢方法,选择耐腐蚀的材质、修饰涂层、改变工艺流程等防腐方法.<br>Scaling and corrosion of metal equipment are a common environmental and technical problem in the development and utilization of geothermal waters. The physical and chemical properties of a total of 36 geothermal well waters in the main urban area of Chongqing were analyzed, and based on the results the scaling and corrosion tendency of the geothermal well waters and their the chief scale products were calculated and determined with the index method. Theoretically, most of the geothermal well waters had slight or serious scaling. The main precipitated scaling matters were calcium carbonate and calcium sulfate, without calcium silicate formation. Carbonate minerals, such as calcite, were responsible for the scaling. Most of the geothermal well waters were noncorrosive to metal equipment. But actually, most of the geothermal well waters had slight calcium carbonate scaling, and were slightly corrosive to metal pipes, a fact which did not agree with the results judged with the index method. It is recommended that such descaling methods as pretreatments of geothermal well waters and application of coating layers, and such anticorrosive methods as selection of corrosion-resistant materials, coating layers and improvement of process should be adopted, preferably in combination %K 结垢 %K 腐蚀 %K 钻井地热水 %K 重庆< %K br> %K scaling %K corrosion %K geothermal well water %K Chongqing %U http://xbgjxt.swu.edu.cn/jsuns/html/jsuns/2017/10/201710014.htm