超稠油采出水电絮凝深度除硅影响因素分析
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中国石油新疆油田分公司工程技术研究院

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中国石油天然气集团有限公司电化学与大直径陶瓷膜组合处理稠油采出水技术研究(kt2019-15-03)。


Analysis of Factors Affecting Silicon Removal by Hydroelectric Flocculation Depth in Ultra-heavy Oil Production
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Engineering Technology Research Institute of PetroChina Xinjiang Oilfield Branch

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    摘要:

    以铝板为阴阳极,采用电絮凝对超稠油采出水进行深度除硅研究。通过单因素变量得到最佳PAC用量、pH值、电流密度大小及PAM用量。结果表明:单独电絮凝不能实现深度除硅;“电絮凝+PAC+PAM”对超稠油采出水除硅具有协同作用;当PAC为200mg/L、pH为8.0、电流密度为10mA/cm2、PAM为50mg/L,电絮凝时间为13min时,电絮凝出水SiO2为20mg/L,SiO2去除率为92%,实现深度除硅;随着电絮凝时间的增加,SiO2去除率增加,但其变化率减小。

    Abstract:

    Electrocoagulation has been treated by experiment on deep silicon removal of super-heavy oil produced water using aluminum plates as cathode and anode. The optimal PAC dosage, pH value ,current density and PAM dosage are obtained through single factor variables. The results show that single electrocoagulation can not achieve deep silicon removal. Electrocoagulation together with PAC and PAM has a synergistic effect on the removal of silicon from super-heavy oil produced water. The effluent of SiO2 by electrocoagulation reaches 20mg/L and the SiO2 removal rate is 92% when the PAC is 200mg/L, the pH is 8.0, the current density is 10mA/cm2, and electroflocculation time is 13 minutes, which can achieve deep silicon removal. With the increase of electric flocculation time, the removal rate of SiO2 increases, but the rate of change decreases.

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  • 收稿日期: 2021-09-15
  • 最后修改日期: 2021-11-05
  • 录用日期: 2021-11-12
  • 在线发布日期: 2022-09-06
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