井矿盐卤水中硫酸钙颗粒沉降过程研究  

Study on sedimentation process of calcium sulfate particles in well rock salt brine

作　　者：王学魁[1,2] 李富华[1,2] 唐娜[1,2] 杜威 张蕾[1,2] 程鹏高[1,2] Wang Xuekui Li Fuhua Tang Na Du Wei Zhang Lei Cheng Penggao(College of Chemical Engineering and Materials Science, Tianjin University of Science ＆ Technology, Tianjin 300457, China Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science ＆ Technology)

机构地区：[1]天津科技大学化工与材料学院,天津300457 [2]天津科技大学海洋资源与化学重点实验室

出　　处：《无机盐工业》2017年第5期22-24,55,共4页Inorganic Chemicals Industry

基　　金：国家海洋局海洋公益性行业科研专项(201405008-1);天津市海洋经济创新发展区域示范项目(cxsf2014-26);科技重大专项与工程(15ZXCXSF00040)教育部科研创新团队培育计划([2013]373);天津市高等学校创新团队培养计划(TD12-5004)

摘　　要：测定了硫酸钙颗粒在不同颗粒浓度和卤水浓度中沉降高度与时间的关系,测量的实际值与理论值做了对比,并分析了硫酸钙颗粒浓度和卤水浓度对硫酸钙颗粒沉降速率的影响。结果表明:沉降速率随硫酸钙颗粒浓度和卤水浓度的增加而减小;实验中的实际值远远小于理论值;硫酸钙颗粒浓度从5%(体积分数,下同)增至20%时,介质浓度高的沉降速率下降快;卤水浓度升高时,颗粒浓度高的沉降速率下降快。在纯水中,硫酸钙颗粒浓度为5%时,硫酸钙的沉降速率为19.1 mm/min。在卤水质量浓度为360 g/L、硫酸钙颗粒浓度为20%时,硫酸钙颗粒的沉降速度仅为0.33 mm/min。The relationship between the settling height and time of calcium sulfate particles in different particle concentrations and brine concentrations was determined, the measured actual values and the theoretical values were compared.The effects of calcium sulfate particle concentrations and brine concentrations on the sedimentation rate of calcium sulfate particles were analyzed.Results showed that the deposition rate decreased along with the increasing of the concentrations of calcium sulfate granules and brine.The actual values in the experiment were much smaller than the theoretical values.When the calci- um sulfate particle concentration increased from 5% to 20% （volume fraction, same below）, the sedimentation rate of the high concentration was decreased much more rapidly.As the brine concentration increasing, the sedimentation rate of high calcium sulfate particles was decreased quickly.The sedimentation rate was 19.10 ram/min in fresh water when the concentration of calcium sulfate particles was 5%.The sedimentation rate of calcium sulfate particles was only 0.33 mm/min when the mass concentration of brine was 360 g/L and the concentration of calcium sulfate was 20%.

关 键 词：氨碱废液 硫酸钙 井矿盐 

分 类 号：TQ132.32[化学工程—无机化工]