Preparation of an amphoteric flocculant having both high polymer content and low viscosity and its polymerization kinetics

doi:10.1016/j.cjche.2018.03.002

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (1): 130-135.DOI: 10.1016/j.cjche.2018.03.002

• Separation Science and Engineering • 上一篇下一篇

Preparation of an amphoteric flocculant having both high polymer content and low viscosity and its polymerization kinetics

Shenwen Fang^1,2, Manlin Wang^1,2, Zipei Xu^1,2, Lei Zhai³, Xiujun Wang³, Yan Xiong^1,2

1 School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China;
2 Oil & Gas Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, China;
3 Beijing Research Center of China National Offshore Oil Corporation, Beijing 100027, China

收稿日期:2017-11-20 修回日期:2018-02-28 出版日期:2019-01-28 发布日期:2019-01-31
通讯作者: Shenwen Fang
基金资助:
Supported by the Key Technologies R&D Program of China (2016ZX05025003-003) and the National Natural Science Foundation of China (51504201).

Preparation of an amphoteric flocculant having both high polymer content and low viscosity and its polymerization kinetics

Shenwen Fang^1,2, Manlin Wang^1,2, Zipei Xu^1,2, Lei Zhai³, Xiujun Wang³, Yan Xiong^1,2

1 School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China;
2 Oil & Gas Applied Chemistry Key Laboratory of Sichuan Province, Chengdu 610500, China;
3 Beijing Research Center of China National Offshore Oil Corporation, Beijing 100027, China

Received:2017-11-20 Revised:2018-02-28 Online:2019-01-28 Published:2019-01-31
Contact: Shenwen Fang
Supported by:
Supported by the Key Technologies R&D Program of China (2016ZX05025003-003) and the National Natural Science Foundation of China (51504201).

摘要/Abstract

摘要： It is not easy for liquid cationic flocculant diallyldimethyl-ammonium chloride (DM) homopolymer to simultaneously exhibit both low viscosity and high polymer content, which limited its application in offshore oilfield. In this paper, sodium allylsulfonate (XS) and sodium formate were used in the aqueous solution polymerization of DM. An amphoteric flocculant (PDMXS) with the properties of high polymer content (about 55 wt%) and low viscosity (efflux time measured by an Apply 4 viscometer was less than 100 s) was prepared. The optimum reaction conditions were identified as follows:the mass ratio of XS/DM was 10 wt%, the concentration of sodium formate was 2000 mg·L^-1, reaction temperature was 55℃, the concentration of KPS was 0.5 wt% and the reaction time was 4 h. The polymerization kinetics was discussed. The results showed that R_p ∝[M]^1.97[I]^0.68[CTA]^0.71 and the apparent activation energy was 72.55 kJ·mol^-1.

Abstract: It is not easy for liquid cationic flocculant diallyldimethyl-ammonium chloride (DM) homopolymer to simultaneously exhibit both low viscosity and high polymer content, which limited its application in offshore oilfield. In this paper, sodium allylsulfonate (XS) and sodium formate were used in the aqueous solution polymerization of DM. An amphoteric flocculant (PDMXS) with the properties of high polymer content (about 55 wt%) and low viscosity (efflux time measured by an Apply 4 viscometer was less than 100 s) was prepared. The optimum reaction conditions were identified as follows:the mass ratio of XS/DM was 10 wt%, the concentration of sodium formate was 2000 mg·L^-1, reaction temperature was 55℃, the concentration of KPS was 0.5 wt% and the reaction time was 4 h. The polymerization kinetics was discussed. The results showed that R_p ∝[M]^1.97[I]^0.68[CTA]^0.71 and the apparent activation energy was 72.55 kJ·mol^-1.

Shenwen Fang, Manlin Wang, Zipei Xu, Lei Zhai, Xiujun Wang, Yan Xiong. Preparation of an amphoteric flocculant having both high polymer content and low viscosity and its polymerization kinetics[J]. Chinese Journal of Chemical Engineering, 2019, 27(1): 130-135.

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Preparation of an amphoteric flocculant having both high polymer content and low viscosity and its polymerization kinetics

Preparation of an amphoteric flocculant having both high polymer content and low viscosity and its polymerization kinetics

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