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| Poly(aspartic acid)-Serine Grafted Copolymer and Its Scale-Inhibition Performance |
| Received:August 10, 2017 Revised:December 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.12.005 |
| KeyWord:polyaspartic acid serine grafted copolymer scale inhibitor |
| Author | Institution |
| LI Bin |
Chmical Additives Factory, Xinjiang Tarim Oilfield Construction Co., Ltd, Korla , China |
| SONG Wen-wen |
Tarim Oilfield Company, Petro China, Korla , China |
| ZHANG Juan-tao |
State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi´an , China |
| LI Xun-ji |
Tarim Oilfield Company, Petro China, Korla , China |
| SUN Xiao-yu |
Department of Applied Chemistry, College of Science, Northwestern Polytechnical University, Xi´an , China |
| ZHANG Jun-ping |
Department of Applied Chemistry, College of Science, Northwestern Polytechnical University, Xi´an , China |
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| Abstract: |
| Objective To study the scale inhibition of poly (aspartic acid)-serine graft polymer. Methods Poly(aspartic acid)-serine grafted copolymer (PASPSE) was synthesized with polysuccinimide and serine as matrix and monomer respectively. Effects of polymerization time, reaction temperature and molar ratio on the scale inhibition performance of the copolymer were analyzed with the static scale inhibition method. Results The best synthesize addition was gotten as: 18 h of reaction, 55 ℃, and 1:1 polysuccinimide/serine. PASPSE had good chelating and dispersing effect on CaCO3 scale. The scale inhibition efficiency of PASPSE on CaCO3 scale decreased with the increase of temperature, time and Rario(mHCO3-:mCa2+). In the high temperature environment of 90 ℃, the crustation inhibitor efficiency of 10 mg/L PASPSE was 95.5%. Conclusion PASPSE has good scale inhibition performance on CaCO3 in high temperature systems. |
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