化工学报2016，Vol.67Issue(9)：3936-3945,10.DOI:10.11949/j.issn.0438-1157.20151962
深井降温系统管道结垢微观机理
Micro-mechanism of scaling in a cooling system under deep mine
摘要
Abstract
The micro-mechanism of the scaling of pipelines in the cooling system under deep mine was studied. Firstly, the composition and content of the ions in the mining water were determined by the full analysis of water quality, and then the chemical model and mathematical model were built, finally, the adsorption of scaling ions on iron surface was calculated by using the VASP software based on density functional theory ( DFT ). The result shows that, ① the scaling of the cooling system includes the combination of2Ca+ and23CO− and the transform of MgCO3, CaSO4 to CaCO3; ② the scaling ions (2Ca+,3HCO−,2Mg+ and24SO−) are the main factors leading to the scaling of the cooling system pipelines under deep coal mine and2Mg+ and24SO− could restrain the 3CaCO scaling. The research is of great importance to the understanding of the scaling of the cooling under deep coal mine, pretreatment, and descaling, in order to guarantee the cooling effect and production safety for the geothermal engineering.关键词
结垢/表面/吸附/数值分析/密度泛函理论Key words
scaling/surface/adsorption/numerical analysis/density functional theory分类
矿业与冶金引用本文复制引用
韩巧云,杨晓杰,邹声华..深井降温系统管道结垢微观机理[J].化工学报,2016,67(9):3936-3945,10.基金项目
国家自然科学基金项目（51274098，51134005）；高等学校博士学科点专项科研基金项目（20130023110021）；湖南省教育厅科研项目（15C0552）。@@@@ supported by the National Natural Science Foundation of China (51274098,51134005), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20130023110021) and the Education Fund of Hunan Province (15C0552) （51274098,51134005）
