Abstract:

Scale inhibitor,low phosphine hydrolysis polymaleic anhydride(PHPMA) has been synthesized.Water is used as solvent,homogeneous catalysis initiates H₂O₂ and produces free radical.OH.The effects of raw material mixture ratio,reaction temperature,catalyst dosage,reaction time and scale inhibitor dosage on the scale inhibition efficiency are studied.The best synthesis conditions are: m(MA)∶m(NaH2PO2.H2O)∶m(H₂O₂)∶m(H₂O)=12∶4.5∶13∶ 12.When the dosage of catalyst is 0.05%,reaction time 3 h,temperature 95 ℃,and dosage of PHPMA 4 mg/L,the scale inhibition rate reaches 99.61%.The results show that the highly efficient scale inhibitor PHPMA can be synthesized by homogeneous catalysis

Key words: low phosphine hydrolysis polymaleic anhydride, scale inhibition, circulating cooling water

摘要：

以水为溶剂,均相催化引发H2O2产生.OH,合成了低膦水解聚马来酸酐(PHPMA)阻垢剂。研究了原料质量配比、反应温度、催化剂加量、反应时间及阻垢剂加量对阻垢效果的影响。得出最佳合成工艺:m(马来酸酐)∶m(次亚磷酸钠)∶m(引发剂)∶m(水)=12∶4.5∶13∶12,催化剂用量为0.05%,反应时间3 h,温度95℃。PHPMA投加质量浓度为4 mg/L时,其静态阻垢率达99.61%。结果表明,采用均相催化能够合成低膦水解聚马来酸酐高效阻垢剂。

关键词: 低膦水解聚马来酸酐, 阻垢, 循环冷却水

CLC Number: 

• TQ085.+412