化工学报2011，Vol.62Issue(2)：525-531,7.
新型无磷无氮阻垢剂的阻磷酸钙垢及分散Fe(Ⅲ)性能
Novel phosphorus-free and nitrogen-free anti-scalant for calcium phosphate and Fe(Ⅲ)
摘要
Abstract
A novel phosphorus-free and nitrogen-free anti-scalant for calcium phosphate and Fe( Ⅲ ) , maleic anhydride/allyl polyethylene glycol carboxylate (MCn, n is the degree of polymerization of polyethylene glycol, n = 5, 9, 13) , was synthesized from allyl polyethylene glycol monoether, chloracetic acid, maleic anhydride, and sodium hydroxide. The product was characterized by FT-IR and 1 H-NMR. The performance of calcium phosphate inhibition and dispersancy towards Fe ( Ⅲ ) was evaluated by the static scale-inhibiting method and light transmittance, respectively. SEM analysis showed a disordered calcium phosphate crystal in the presence of MCn. The studies indicated that both inhibition and dispersancy increased with increasing degree of polymerization of polyethylene glycol in the structure of MCn from 5 to 13. MC13 had superior ability to inhibit the precipitation of calcium phosphate, approximately 99% inhibition when the dosage was 6 mg · L-1 , and had excellent dispersancy towards Fe(Ⅲ), about 22% light transmittance when the dosage was 8 mg · L-1 . Inhibition mechanism was proposed that the interactions between all kinds of metallic ions in systems and carboxyl groups on side chains and/or oxygen atoms of ethers were the fundamental impetus to restrain the formation of calcium phosphate scale and disperse Fe(Ⅲ) in cooling water systems.关键词
无磷阻垢剂/磷酸钙/分散Fe(Ⅲ)Key words
phosphorus-free anti-scalant/calcium phosphate/disperse Fe(Ⅲ)分类
矿业与冶金引用本文复制引用
符嫦娥,周钰明,薛蒙伟,谢洪涛,吴文导,孙伟..新型无磷无氮阻垢剂的阻磷酸钙垢及分散Fe(Ⅲ)性能[J].化工学报,2011,62(2):525-531,7.基金项目
国家自然科学基金项目(50873026) （50873026）
江苏省常州市产学研合作科技项目(CV20090002). （CV20090002）
