摘要
通过研制新型绿色复配阻垢剂HPMA-AMPS-PAA,并利用6种实际地热流体验证其阻垢性能。研究结果表明,当HPMA、AMPS和PAA投加量分别为2、6 mg/L和8 mg/L时,复配阻垢剂较单一阻垢剂阻垢率提升25.92%,在200℃高温或pH=9条件下,停留时间为24 h时仍可保持80%以上阻垢率,同时Na^(+)、K^(+)、Mg^(2+)等离子由于盐效应可进一步提升阻垢效果。通过对阻垢机理研究得出,HPMA-AMPS-PAA通过晶格畸变、螯合和分散协同作用,促使碳酸钙从方解石向球霰石晶型转变,有效抑制碳酸钙生长。
A novel green composite scale inhibitor,HPMA-AMPS-PAA,is developed,and its scaling inhibition performance is validated through using six kinds of actual geothermal fluid.Results indicate that the composite scale inhibitor with HPMA,AMPS,and PAA dosages of 2,6,and 8 mg/L,respectively exhibits a 25.92%improvement in scaling inhibition efficiency compared to single scale inhibitor.It maintains a scaling inhibition rate of over 80%even after 24 h at 200℃ or pH=9.Additionally,the presence of Na^(+),K^(+),and Mg^(2+) further enhances the scaling inhibition effect due to the salt effect.Through studying its mechanism,it is found that HPMA-AMPS-PAA induces a transformation of calcium carbonate from calcite to vaterite crystal form through synergistic effects of lattice distortion,chelation,and dispersion,which inhibiting calcium carbonate growth effectively.
作者
谷永
胥博文
王惠荣
时光伟
郑晓菲
阮传侠
GU Yong;XU Bo-wen;WANG Hui-rong;SHI Guang-wei;ZHENG Xiao-fei;RUAN Chuan-xia(Tianjin Geothermal Exploration and Development-Designing Institute,Tianjin 300250,China;Observation and Research Station of Tianjin Low-Medium Temperature Geothermal Resources,Ministry of Natural Resources,Tianjin 300250,China)
出处
《现代化工》
北大核心
2025年第S2期163-169,共7页
Modern Chemical Industry
基金
国家自然科学基金项目(42272308)
天津市地质矿产勘查开发局项目(地矿科任[2024]3号)。
关键词
地热
结垢
绿色阻垢剂
热动力学因素影响
协同阻垢机理
geothermal energy
fouling
green scale inhibitor
influence of thermodynamic factors
synergistic scale inhibition mechanism
