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Development of Long - time Effective Solid Anti - scaling Compound

Wan Deli Yan Yukui Zhao Hongbin (Mechanic and Engineering Department of Daqing Petroleum Institute, Daqing 163318)  
A kind of long - time effective solid anti - scaling compound was developed using polyvinyl alcohol as carrier,EDTMP as antiscaling compound with HPMA as synergistic agent. EDTMP was grafted with ethylene glycol before adding PVA carrier. The above anti - scaling compound comprised the following components: 10 g of PVA, 40 mL of water,1 mL of EDTMP, 1 mL of HPMA and 0.5 mL of ethylene glycol. The water hardness and scaling rate after adding anti - scaling compound were decreased from 1.168 mmol/L and 36.270 8 mg/a to 0.05 mmol/L and 16.041 6 mg/a respectively showing good anti - scaling behavior.The dispersity of anti - scaling compound determined was 5.89 mg/(h·cm2) .
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