高适配性绿色阻垢剂合成及其复配阻垢性能  

Preparation of High Adaptability Green Scale Inhibitor and Study on Compound Scale Inhibition Performance

作　　者：徐慧 王珊珊[1] 姜政国 黄艳红 田延军 刘建军[1] XU Hui;WANG Shanshan;JIANG Zhengguo;HUANG Yanhong;TIAN Yanjun;LIU Jianjun(Shandong Food Ferment Industry Research&Design Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250013;Yantai Hengyuan Bioengineering Co.,Ltd.,Yantai 265709)

机构地区：[1]齐鲁工业大学(山东省科学院)山东省食品发酵工业研究设计院,济南250013 [2]烟台恒源生物股份有限公司,烟台265709

出　　处：《食品工业》2022年第8期160-164,共5页The Food Industry

基　　金：山东省重大科技创新工程项目(2019JZZY010341);山东省泰山产业领军人才建设项目(鲁政办字(2019)190号);山东省中央引导地方科技发展资金项目(YDZX20203700003052)。

摘　　要：为满足生产应用需求,通过非磷催化剂催化L-天冬氨酸(L-aspartic acid,L-Asp)的热缩和反应合成聚天冬氨酸(polyasparatic acid,PASP),其可与多种缓蚀阻垢剂进行复配使用。通过静态阻垢试验和旋转挂片试验评价PASP在最优工艺条件下的复配阻垢和缓蚀性能,采用扫描电镜图(SEM)探讨PASP的阻垢机理。结果表明,在混合催化剂(二元酸与离子液体[Hmim]HSO_(4))比例4︰5,L-Asp与催化剂比例1︰1,聚合温度220℃,缩聚时间1.5 h,用质量分数20%的NaOH控制pH保持在10~12,水解温度55℃,水解时间1 h的合成条件下,复合缓蚀阻垢剂对CaCO_(3)的阻垢率达90%以上,对A3碳钢的缓蚀率达56%以上,均明显优于单体PASP的75%和35%。阻垢机理分析表明PASP对CaCO_(3)垢具有鳌合分散作用,可吸附在微晶体表面,抑制晶体生长,使其结构疏松而达到抑垢效果。In order to meet the requirements of production and application,polyasparatic acid(PASP)was obtained by catalyzing the thermal condensation reaction of aspartic acid with non-phosphorus catalyst,which could be used in combination with a variety of corrosion inhibitors.The scale inhibition and corrosion inhibition performance of PASP under optimal technological condition were evaluated by static scale inhibition method and rotary hanging piece method respectively,and the scale inhibition mechanism was discussed by scanning electron microscope(SEM).The results showed that,when the ratio of mixed catalyst(dibasic acid and ionic liquid[Hmim]HSO_(4))4︰5,the ratio of L-Asp and catalyst 1︰1,the polymerization temperature 220℃,the polycondensation time 1.5 h,the pH kept at 10-12 with 20%NaOH,the hydrolysis temperature 55℃,and the hydrolysis time 1 h,the scale inhibition rate of CaCO_(3)reached more than 90%,and the corrosion inhibition rate of A3 carbon steel reached more than 56%,respectively,which was obviously better than that of the monomer PASP(75%and 35%).The analysis of scale inhibition mechanism showed that PASP had a chelating dispersion effect on CaCO_(3)which could absorb on the surface of microcrystals to inhibit the growth of crystal,make its structure loose and achieve scale inhibition effect.

关 键 词：绿色阻垢剂 聚天冬氨酸 复配 阻垢率 缓蚀 

分 类 号：TQ085.412[化学工程]