环保型阻垢剂聚天冬氨酸的合成及性能评价  

Synthesis and Performance Evaluation of Environment-friendly Scale Inhibitor Polyaspartic Acid

作　　者：戴倩倩[1] 刘炜[1] 马喜平[1] 周飞[2] 于小荣 

机构地区：[1]西南石油大学化学化工学院,成都610500 [2]西南石油大学石油工程学院,成都610500

出　　处：《精细石油化工进展》2010年第2期40-42,共3页Advances in Fine Petrochemicals

摘　　要：以马来酸酐和铵盐为原料,磷酸为催化剂,合成了聚天冬氨酸(PASP)阻垢剂。确定了PASP最佳合成工艺条件:铵盐为碳酸铵,铵离子与马来酸酐摩尔比为1.2∶1,氨化时间2h,马来酸酐用量为9.8g时,水解碱(2mol/LNaOH溶液)加量45mL。阻垢性能评价表明,当PASP加量为10mg/L时,对硫酸钙的阻垢率达98.3%;在80℃时,阻垢率仍达90%以上。Scale inhibitor polyaspartic acid （PASP）was synthesized using maleic anhydride and ammonium salt as raw materials and phosphoric acid as catalyst. The optimum synthetic process conditions were determined as follows： the ammonium salt was ammonium carbonate, the molar ratio of ammonium ion to maleic anhydride was 1.2 ： 1, ammoniation time was 2 h, and the adding amount of hydrolization alkali （NaOH solution, 2 moL/L） was 45 mL. The results of scale inhibition evaluation showed that the scale inhibition rate to calcium sulfate was 98.3% when the adding amount of PASP was 10 mg/L and the rate was still higher than 90% when temperature was at 80 ℃.

关 键 词：聚天冬氨酸 阻垢剂 硫酸钙垢 

分 类 号：TQ085.4[化学工程]