复配阻垢剂的性能及阻垢机理研究

Properties and Mechanism of a Compound Scale Inhibitor

采用静态阻垢法对聚环氧琥珀酸(PESA)、聚天冬氨酸(PASP)和丙烯酸-2-丙烯酰胺-2-甲基丙磺酸共聚物(AA/AMPS)组成的复配阻垢剂的阻垢性能进行研究,采用SEM初步探讨了复配阻垢剂的阻垢机理.结果表明与进口阻垢剂MDC220和PTP-0100相比,复配阻垢剂对CaCO3,CaSO4和Fe2O3有很好的阻垢性能,硬度和碱度对复配阻垢剂的阻垢性能影响较小.对加入复配阻垢剂前后的碳酸钙垢样和硫酸钙垢样进行了分析,结果表明,复配阻垢剂使垢的晶格产生了畸变,使晶体从有规则致密结构的晶体变为松软的不定型体.

Static experiments were carried out to validate the performance of a compound scale inhibitor,that is composed of the polyepoxysuccinic acid（PESA）,polyaspartic acid（PASP）and acrylic-2-acrylamide-2-methylpropane sulfonic acid copolymer（AA/AMPS）.Its scale inhibiting mechanism was discussed with SEM.The experimental results showed that the compound scale inhibitor has favorable properties of scale inhibition for CaCO3,CaSO4 and Fe2O3 in comparison with the imported scale inhibitors such as MDC220 and PTP-0100.The effects of hardness and alkalinity of water on the scale inhibition rates of the compound scale inhibitor are comparatively low.SEM images of CaCO3 and CaSO4 crystals indicated that the inhibitor causes the crystal lattice of scale to be distorted,then the regularly dense crystal structure transforms into amorphous state.