新型高效水处理剂的合成及性能研究

Synthesis and Performance of a New Type of Highly Effective Water Treatment Agent

以亚磷酸、丙烯酸、２丙烯酰氨基２甲基丙磺酸（ＡＭＰＳ） 为原料，合成了含磺酸基的膦酰基羧酸共调聚物（ＰＯＣＡ） ，研究了它的阻垢分散及缓蚀性能，并与ＨＥＤＰ、ＨＰＭＡ、ＨＳ－ ３１２ 、ＰＢＴＣＡ 等水处理剂作了比较。结果表明，在加药质量浓度为２－５ ～２０ ｍｇ／Ｌ 时，ＰＯＣＡ 与以上４ 种药剂对ＣａＣＯ３ 沉积的最大抑制能力分别为９６ ％ ，７７－８ ％ ，８８－４ ％ ，６２－８ ％ ，９７－６ ％ ；对Ｃａ３（ＰＯ４）２ 沉积的最大抑制能力分别为９０－４ ％ ，２２－４ ％ ，３５－２ ％ ，８９－６ ％ ，３５－４ ％ ；对锌盐沉积的最大抑制能力分别为８８－２ ％ ，３５－２ ％ ，３３ ％ ，９０－４ ％ ，５４ ％ ；分散氧化铁时上清液的最小透光率分别为３９－８ ％ ，５２－１ ％ ，４２－３ ％ ，３０－７ ％ ，６１ ％ ；在加药质量浓度为５ ～４０ ｍｇ／Ｌ 时，对碳钢的最大缓蚀率分别为７０－６ ％ ，８７－７ ％ ，１０－４ ％ ，８－９ ％ ，７６－９ ％ 。ＰＯＣＡ的综合性能较好。

The phosphono carboxylic acid cotelomer(POCA) containing sulfonic acid group was made from phosphorous acid,acrylic acid and 2 acrylamido 2 methylpropanesulfonic acid.Its performance was studied and compared with other water treatment agents such as HEDP,HPMA,HS-312 and PBTCA.When the dosage of agents was 2 5-20 mg/L,the highest inhibition rates of POCA and the other four agents on the precipitation of CaCO\-3 were 96%,77 8%,88 4%,62 8% and 97 6%,on the precipitation of Ca\-3(PO\-4)\-2 were 90 4%, 22 4%, 35 2%, 89 6% and 35 4%,and on the precipitation of zinc salts were 88 2%, 35 2%, 33%, 90 4% and 54% respectively.The least diaphaneities of the top liquid on dispersing iron oxide were 39 8%, 52 1%, 42 3%,30 7% and 61% respectively.When the dosage of agents was 5-40 mg/L,the highest corrosion inhibition rates on mild steel were 70 6%, 87 7%, 10 4%, 8 9% and 76 9% respectively.The synthetic performance of POCA was fairly good.