Detecting the best electromagnetic field intensity in experiment of electromagnetic anti-fouling based on metastable zone

doi:10.11949/j.issn.0438-1157.20160267

Abstract

Abstract:

Electromagnetic field anti-fouling technology has received great attention because of its advantages of low investment, zero pollution, etc. Reasonable selection of electromagnetic parameter is one of the necessary conditions for the best result of electromagnetic anti-scaling. This research designed a set of dynamic electromagnetic experiment with electrical conductivity method. The characteristics of varying conductivity with time in the titration process under the given experimental conditions were compared, and the calcium carbonate crystallization metastable curve under different solution concentration and intensity of the electromagnetic field were obtained. Then, the influence of electromagnetic field on the induction period of calcium carbonate precipitation from the perspective of the metastable zone was analyzed. Finally, it was found that the 200 Gs was the best magnetic field intensity values of electromagnetic fields inhibiting calcium carbonate crystallization.

Key words: electromagnetic field anti-fouling, magnetic field intensity, electrical conductivity, metastable zone

摘要：

电磁抑垢技术以其投资少、无污染等优点备受业内人士瞩目。合理选择电磁参数，是达到电磁抑垢最佳效果的必要条件之一。根据电导率滴定法，设计了动态电磁实验装置，在给定实验条件下进行了实验，并对电导率随时间变化的特征进行了对比分析，得到不同溶液浓度和不同电磁场强度作用下的碳酸钙结晶介稳曲线，从介稳区的角度分析电磁场对碳酸钙结晶成核诱导期的影响，确定了电磁场抑制碳酸钙结晶的最佳磁场强度值为200Gs。

关键词: 电磁抑垢, 磁场强度, 电导率, 介稳区

CLC Number:

TQ085

WANG Jianguo, LI Bin, LIANG Yandong, YIN Zhao, CHEN Si. Detecting the best electromagnetic field intensity in experiment of electromagnetic anti-fouling based on metastable zone[J]. CIESC Journal, 2016, 67(9): 3658-3662.

王建国, 李斌, 梁延东, 尹钊, 陈思. 基于介稳区的电磁抑垢最佳磁场强度探寻[J]. 化工学报, 2016, 67(9): 3658-3662.

References 20

[1]	冷学礼, 田茂诚, 潘继红, 等. 渐近线型污垢生长的参数特性及测量方法[J]. 热能动力工程, 2008, 23(3):278-279. LENG X L, TIAN M C, PAN J H, et al. Parameter characteristics and measurement method for asymptotic type fouling growth[J]. Journal of Engineering for Thermal Energy &Power, 2008, 23(3):278-279.
[2]	王建国, 刘高生, 孙伟. 电磁场作用下循环水污垢热阻的灰色预测模型实验研究[J]. 中国电机工程学报, 2013, 33(11):61-68.DOI:10.13334/j.0258-8013.pcsee.2013.11.009. WANG J G, LIU G S, SUN W. Experiment research on fouling resistance grey forecast model for circulating water in electromagnetic field[J]. Proceedings of the CSEE, 2013, 33(11):61-68. DOI:10.13334/j.0258-8013.pcsee.2013.11.009.
[3]	DRELA I, FALEWICZ P, KUCZKOWSKA S. New rapid test for evaluation of scale inhibitors[J]. Water Research, 1998, 32(10):3188-3191. DOI:10.1016/S0043-1354(98)00066-9.
[4]	中华人民共和国国家发展和改革委员会. HG/T 2194-2006, 多层芯输送带:结构要求[S]. 北京:化学工业出版社, 2007. National Development and Reform Commission. HG/T 2194-2006, Ply type conveyor belts-Characteristics of construction[S]. Beijing:Chemical Industry Press, 2007.
[5]	华中师范大学, 陕西师范大学, 东北师范大学, 等.分析化学[M]. 2版. 北京:高等教育出版社, 2004. Huazhong Normal University, Shaanxi Normal University, Northeast Normal University, et al. Analytical Chemistry[M]. 2nd ed. Beijing:Higher Education Press, 2004.
[6]	NYVLT J. Kinetics of nucleation in solutions[J]. Journal of Crystal Growth, 1968, (3/4):377-383. DOI:10.1016/0022-0248(68)90179-6.
[7]	马勇, 朱家文, 陈葵, 等. 磷酸结晶介稳区性质的研究[J]. 高校化学工程学报. 2010, 24(2):331-335. MA Y, ZHU J W, CHEN K, et al. Crystallization metastable zone width of phosphoric acid[J]. Journal of Chemical Engineering of Chinese Universities, 2010, 24(2):331-335.
[8]	李军, 王燕, 张凌之. 表面活性剂对氟硅酸钠(钾)在磷酸介质中结晶介稳区宽度的影响[J]. 四川大学学报(工程科学版), 2002, 34(3):53-56. LI J, WANG Y, ZHANG L Z. Effect of additives on the metastable zone width of sodium potassium fluorosilicate, potassiumin fluorosilicate phosphoric acid[J]. Journal of Sichuan University (Engineering Science Edition), 2002, 34(3):53-56.
[9]	TERENCE L T, RUSSELL W D, SIMON J C. Metastable zone widths, conformational multiplicity, and seeding[J]. Organic Process Research & Development. 2013, 17(3):578-584. DOI:10.1021/op3003486.
[10]	王小洁, 李鸿, 王伟, 等. 超声波对甲硝唑溶液结晶热力学性质的影响[J]. 人工晶体学报. 2007, 36(1):76-80. WANG X J, LI H, WANG W, et al. Impact of ultrasound on thermodynamic property in the crystallization of C6H9N3O3[J]. Journal of Synthetic Crystals. 2007, 36(1):76-80.
[11]	YU J, LI A, CHEN X C, et al. Experimental determination of metastable zone width, induction period, and primary nucleation kinetics of cytidine 5'-monophosphate disodium salt in an ethanol-aqueous mixture[J]. Journal of Chemical and Engineering Data, 2013, 58(5):1244-1248. DOI:10.1021/je4000263.
[12]	杨善让, 曹生现, 陈立军, 等. 基于电导率滴定法的碳酸钙成垢诱导期实验研究[J]. 工程热物理学报, 2008, 29(9):1577-1580. YANG S R, CAO S X, CHEN L J, et al. A study on the conductimetric titration of the calcium carbonate fouling induction period[J]. Journal of Engineering Thermophysics, 2008, 29(9):1577-1580.
[13]	REDDY M M. Crystallization of calcium carbonate in the presence of trace concentrations of phosphate and ions[J]. Journal of Crystal Growth, 1977, (41):287-295.
[14]	BHUIYAN M, MAVINIC D S, BECKIE R D. Nucleation and growth kinetics of struvite in a fluidized bed reactor[J]. Crystal Growth, 2008, 310(6):1187-1194. DOI:10.1016/j.jcrysgro.2007.12.054.
[15]	胡秀英, 党亚固, 林晶, 等. 磷酸二氢钾结晶介稳区性质研究[J]. 化工矿物与加工, 2007, (2):10-13. HU X Y, DANG Y G, LIN J, et al. Research on crystallization metastable zone properties of potassium dihydrogen phosphate aqueous solution[J]. IM &P, 2007, (2):10-13.
[16]	张瑜.几种无机盐和有机化合物水溶液结晶介稳态研究[D]. 天津:天津大学, 2007. ZHANG Y. Study on the metastable state of crystallization of aqueous solution of some inorganic salts and organic compounds[D]. Tianjin:Tianjin University, 2007.
[17]	于海斌, 宋存义, 程玉洁.诱导结晶反应中介稳区的研究[J]. 环境科学研究, 2011, 24(7):769-773. DOI:10.13198/j.res.2011.07.61. yuhb.011. YU H B, SONG C Y, CHENG Y J. Metastable region in reaction of induced crystallization[J]. Research of Environmental Sciences, 2011, 24(7):769-773. DOI:10.13198/j.res.2011.07.61.yuhb.011.
[18]	周公度. 大学化学词典[M]. 北京:化学工业出版社, 1992. ZHOU G D. The Dictionary of University Chemistry[M].Beijing:Chemical Industry Press, 1992.
[19]	CHANG M C, TAI C Y. Effect of the magnetic field on the growth rate of aragonite and the precipitation of CaCO3[J]. Chemical Engineering Journal, 2010, 164(1):1-9. DOI:10.1016/j.cej.2010. 07.018.
[20]	罗漫, 陆柱. 磁场对CaCO3结晶过程的影响[J]. 华东理工大学学报(自然科学版), 2000, 26(2):177-179. LUO M, LU Z. Effects of magnetic field on the formation of CaCO3 crystal[J]. Journal of East China University of Science and Technology(Natural Science Edition), 2000, 26(2):177-179.