钙碱浓度对磺酸盐共聚物稳磷性能的影响  

Impacts of Ca^(2+) Concentration and Alkalinity on Stability of PO_4^(3-) of the Sulphonate Copolymer

作　　者：胡艳华[1] 冯婕[1] 郦和生[1] 

机构地区：[1]中国石油化工股份有限公司北京化工研究院,北京102500

出　　处：《石油化工腐蚀与防护》2014年第3期5-7,13,共4页Corrosion & Protection In Petrochemical Industry

摘　　要：通过静态容量瓶法研究了不同钙碱水质条件下,磺酸盐共聚物对PO3-4的稳定性能。结果表明:磺酸盐共聚物对PO3-4稳定性较好,且钙碱质量浓度对磺酸盐共聚物稳定PO3-4的性能影响较大。Ca2+质量浓度为600~800 mg/L时是磺酸盐共聚物对PO3-4稳定性的拐点,当Ca2+质量浓度低于600 mg/L时,磺酸盐共聚物对PO3-4稳定性较好,阻垢率最高可达80%,此时Ca2+质量浓度对磺酸盐共聚物稳磷性能基本没有影响,碱度为主要影响因素,应重点评价碱度对其稳磷性能的影响;当Ca2+质量浓度高于800 mg/L时,磺酸盐共聚物对PO3-4稳定性较差,阻垢率均低于60%,此时建议开发高钙条件下专用的稳磷聚合物。With the static volumetric flask method, the stability to PO4^3- of the sulphonate copolymer was studied in water quality conditions with the different Ca^2＋ concentrations and alkalinities. The results show that the stability of sulphonate copolymer to PO4^3- is better, and the impacts of Ca^2＋ concentration and alkalinity on the stability to PO4^3- of the sulphonate eopolymer are greater. When Ca^2＋ concentration is 600 mg/L - 800 mg/L, it is the inflection point of the stability to PO4^3- of the sulphonate eopolymer. When Ca^2＋ concentration is below 600 mg/L, the stability to PO4^3- of the sulphonate copolymer is higher. The highest fouling inhibition rate is 80%, and the alkalinity is the main impact factor. The impact of alkalinity on the stability to PO4^3- of the sulphonate copolymer should be evaluated. When Ca^2＋ concentration is higher than 800 mg/L, the stability to PO4^3-of the sulphonate copolymer is poor. The fouling inhibition rates are all below 60%. In this circumstance, it is proposed to develop the special polymer to stabilize PO4^3- under the high - calcium water conditions.

关 键 词：磺酸盐共聚物 CA^2+ PO4^3- 碱度稳定性 

分 类 号：TQ085.4[化学工程]