SCI和EI收录∣中国化工学会会刊

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 Fang1,2, Manlin Wang1,2, Zipei Xu1,2, Lei Zhai3, Xiujun Wang3, Yan Xiong1,2   

  1. 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 Fang1,2, Manlin Wang1,2, Zipei Xu1,2, Lei Zhai3, Xiujun Wang3, Yan Xiong1,2   

  1. 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: 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 Rp ∝[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 Rp ∝[M]1.97[I]0.68[CTA]0.71 and the apparent activation energy was 72.55 kJ·mol-1.