含聚污水处理用清水剂的效果与机理研究
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- 英文论文题名：Research on the performances and mechanisms of water clarifiers used for wastewater treatment in polymer flooding oilfield
- 论文作者：翟磊 ; 王秀军 ; 靖波 ; 张健
- 英文论文作者：Zhai Lei ; Wang Xiujun ; Jing Bo ; Tan Guorong ; Zhang Jian ; State Key Laboratory of Offshore Oil Exploitation ; CNOOC Research Institute
- 年：2016
- 作者机构：海洋石油高效开发国家重点实验室;中海油研究总院;
- 论文关键词：聚合物驱 ; 含聚污水 ; 清水剂 ; 絮凝 ; 油泥
- 英文论文关键词：polymer flooding ; polymer-containing wastewater ; clarifier ; flocculation ; oily sludge
- 会议召开时间：2016-10-25
- 会议录名称：2016中国水处理技术研讨会暨第36届年会论文集
- 语种：中文
- 分类号：X741
- 学会代码：GSCL
- 会议名称：2016中国水处理技术研讨会暨第36届年会
- 会议地点：中国江苏南京
- 主办单位：中国化工学会工业水处理专业委员会、中国石油学会海洋石油分会
- 学会名称：中国化工学会工业水处理专业委员会
- 页数：9
- 文件大小：939k
- 原文格式：D
- 会议级别：全国
摘要
考察了三类清水剂(CP-1、CP-2和CP-3)对油田含聚污水的处理效果,对比了各自的清水除油效果和絮体性能,并对其作用机理进行了分析。实验结果表明:处理温度65℃、清水剂加入量300 mg/L的条件下,CP-1、CP-2和CP-3的除油率分别为97.8%,95.3%,99.2%;CP-1的絮凝速率最快,絮体呈黏性大块状、粘度最大、流动性最差;CP-2的絮凝速率最慢,絮体呈浮油状、粘度最低、流动性好;CP-3的絮凝速率适中,絮体呈松散状、粘度较低、流动性好。机理分析结果表明:CP-1的作用机理主要为压缩双电子层,与阴离子产出聚合物有较强的电性中和作用,除油效果受产出聚合物浓度的影响最大;CP-2的作用机理主要为对油-水界面膜强度的破坏,而CP-3的作用机理则兼具对油-水界面膜强度和界面电荷的破坏,二者与阴离子产出聚合物均无明显电性相互作用。
The oilfield polymer-containing wastewater was treated with three different types of water clarifiers including CP-1, CP-2 and CP-3. The water-clarification properties of clarifiers were evaluated and the performances of flocculation were compared. The oil-removing mechanisms of clarifiers were also analyzed. The experiment results show that: when the treatment temperature and dosage are 65 ℃ and 300 mg/L, the oil-removal rate of CP-1, CP-2 and CP-3 are 97.8%, 95.3% and 99.2%, respectively. The flocculation rate of CP-1is the best, and the viscous flocs have strong adhesion to metal substrates with viscosity of 521 m Pa·s; the flocculation rate of CP-2 is the worst and the oily flocs have good fluidity with viscosity of 124 m Pa·s; by contrast, the flocculation rate of CP-3 is appropriate and the loose flocs show good fluidity and much less adhesive with viscosity of 142 m Pa·s. The mechanism analysis results show that water-clarification effects and flocs properties of clarifiers could be related to their flocculation mechanisms. The thickness of oil-water interface electric double layer can be decreased dramatically by CP-1, but there exist strong electrostatic neutralization interactions between CP-1 and the anionic polymer in wastewater; the strength of oil-water interfacial film can be reduced by CP-2, but the destroy of interface charge is weak; for CP-3, both the strength of oil-water interfacial film and interface charge are effectively lowered, meanwhile the electrostatic neutralization interactions with anionic polymer become significantly weaker. To obtain the same oil-removal, the dosages of all three clarifiers increase with the higher concentration of polymer in the wastewater, and CP-1 shows the greatest impact because of obvious electrostatic neutralization.
The oilfield polymer-containing wastewater was treated with three different types of water clarifiers including CP-1, CP-2 and CP-3. The water-clarification properties of clarifiers were evaluated and the performances of flocculation were compared. The oil-removing mechanisms of clarifiers were also analyzed. The experiment results show that: when the treatment temperature and dosage are 65 ℃ and 300 mg/L, the oil-removal rate of CP-1, CP-2 and CP-3 are 97.8%, 95.3% and 99.2%, respectively. The flocculation rate of CP-1is the best, and the viscous flocs have strong adhesion to metal substrates with viscosity of 521 m Pa·s; the flocculation rate of CP-2 is the worst and the oily flocs have good fluidity with viscosity of 124 m Pa·s; by contrast, the flocculation rate of CP-3 is appropriate and the loose flocs show good fluidity and much less adhesive with viscosity of 142 m Pa·s. The mechanism analysis results show that water-clarification effects and flocs properties of clarifiers could be related to their flocculation mechanisms. The thickness of oil-water interface electric double layer can be decreased dramatically by CP-1, but there exist strong electrostatic neutralization interactions between CP-1 and the anionic polymer in wastewater; the strength of oil-water interfacial film can be reduced by CP-2, but the destroy of interface charge is weak; for CP-3, both the strength of oil-water interfacial film and interface charge are effectively lowered, meanwhile the electrostatic neutralization interactions with anionic polymer become significantly weaker. To obtain the same oil-removal, the dosages of all three clarifiers increase with the higher concentration of polymer in the wastewater, and CP-1 shows the greatest impact because of obvious electrostatic neutralization.
引文
[1]吴迪,任海燕.化学驱采出水特性和清水剂研究进展[J].油田化学,2009,26(2):227-234.
[2]梁伟,赵修太,韩有祥,等.油田含聚污水处理与利用方法技术探讨[J].工业水处理,2010,30(10):1-5.
[3]刘义刚,唐洪明,陈华兴,等.聚驱油田产出聚合物对注入水水质的影响实验研究[J].石油与天然气化工,2011,40(1):63-69.
[4]刘忠和.含聚污水中的聚合物性质研究[J].石油与天然气化工,2012,41(4):429-431.
[5]陈武,靖波,张健,等.聚合物驱含油污水的聚集特性研究[J].工业水处理,2012,32(3):77-80.
[6]檀国荣,张健.两亲聚合物驱油剂对渤海油田采出液处理的影响[J].石油与天然气化工,2011,40(5):481-485.
[7]靖波,张健,檀国荣,等.海上油田含聚污水中原油状态分析[J].油田化学,2014,31(2):295-298.
[8]刘光成,潘亿勇,龚小平,等.锦州9-3油田产出聚合物对污水稳定性的影响研究[J].石油与天然气化工,2014,43(4):452-457.
[9]方申文,段明,王虎,等.阳离子聚合物型絮凝剂处理含聚污水的研究[J].石油化工,2011,40(12):1355-1359.
[10]甘二勇,段明,陈晨,等.阳离子表面活性剂处理油田含聚合物废水[J].化工环保,2012,32(5):401-404.
[11]唐洪明,刘鹏,黎菁,等.含聚污水处理系统HPAM形貌特征及胶状产物成因[J].特种油气藏,2012,19(2):130-134.
[12]朱玥珺,张健,段明.阳离子聚合物对聚合物驱含油污水的处理研究[J].油田化学,2012,29(2):243-246.
[13]王永军,方申文,郭海军,等.非离子型聚丙烯酰胺絮凝剂的制备及其絮凝性能[J].化工环保,2013,33(4):358-362.
[14]刘宗昭,方申文,龙卫红,等.聚甲基丙烯酸改善含聚污水黏性絮体的评价[J].石油化工,2013,42(3):334-338.
[15]靖波,翟磊,张健,等.海上聚合物驱油田污水处理剂的开发利用[J].石油科技论坛,2014,33(3):9-11.
[16]Zhang Jian,Jing Bo,Fang shenwen,et al.Synthesis and performances for treating oily wastewater produced from polymer flooding of new demulsifiers based on polyoxyalkylated N,N-dimethylethanolamine[J].Polym Adv Technol,2014,26(2):190-197.
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[18]全国化学标准化技术委员会水处理剂分会.GB/T 16881-2008水的混凝、沉淀试杯试验方法[S].北京:中国标准出版社,2008.
[19]油气田开发专业标准化委员会.SY/T 5329-2012碎屑岩油藏注水水质指标及分析方法[S].北京:石油工业出版社,2012.
[20]中国海洋石油总公司标准化委员会开发生产专业标准化技术委员会.Q/HS 2042-2014海上碎屑岩油藏注水水质指标及分析方法[S].北京:石油工业出版社,2014.
[2]梁伟,赵修太,韩有祥,等.油田含聚污水处理与利用方法技术探讨[J].工业水处理,2010,30(10):1-5.
[3]刘义刚,唐洪明,陈华兴,等.聚驱油田产出聚合物对注入水水质的影响实验研究[J].石油与天然气化工,2011,40(1):63-69.
[4]刘忠和.含聚污水中的聚合物性质研究[J].石油与天然气化工,2012,41(4):429-431.
[5]陈武,靖波,张健,等.聚合物驱含油污水的聚集特性研究[J].工业水处理,2012,32(3):77-80.
[6]檀国荣,张健.两亲聚合物驱油剂对渤海油田采出液处理的影响[J].石油与天然气化工,2011,40(5):481-485.
[7]靖波,张健,檀国荣,等.海上油田含聚污水中原油状态分析[J].油田化学,2014,31(2):295-298.
[8]刘光成,潘亿勇,龚小平,等.锦州9-3油田产出聚合物对污水稳定性的影响研究[J].石油与天然气化工,2014,43(4):452-457.
[9]方申文,段明,王虎,等.阳离子聚合物型絮凝剂处理含聚污水的研究[J].石油化工,2011,40(12):1355-1359.
[10]甘二勇,段明,陈晨,等.阳离子表面活性剂处理油田含聚合物废水[J].化工环保,2012,32(5):401-404.
[11]唐洪明,刘鹏,黎菁,等.含聚污水处理系统HPAM形貌特征及胶状产物成因[J].特种油气藏,2012,19(2):130-134.
[12]朱玥珺,张健,段明.阳离子聚合物对聚合物驱含油污水的处理研究[J].油田化学,2012,29(2):243-246.
[13]王永军,方申文,郭海军,等.非离子型聚丙烯酰胺絮凝剂的制备及其絮凝性能[J].化工环保,2013,33(4):358-362.
[14]刘宗昭,方申文,龙卫红,等.聚甲基丙烯酸改善含聚污水黏性絮体的评价[J].石油化工,2013,42(3):334-338.
[15]靖波,翟磊,张健,等.海上聚合物驱油田污水处理剂的开发利用[J].石油科技论坛,2014,33(3):9-11.
[16]Zhang Jian,Jing Bo,Fang shenwen,et al.Synthesis and performances for treating oily wastewater produced from polymer flooding of new demulsifiers based on polyoxyalkylated N,N-dimethylethanolamine[J].Polym Adv Technol,2014,26(2):190-197.
[17]油田化学专业标准化技术委员会.SY/T 5796-1993絮凝剂评定方法[S].北京:石油工业出版社,1993.
[18]全国化学标准化技术委员会水处理剂分会.GB/T 16881-2008水的混凝、沉淀试杯试验方法[S].北京:中国标准出版社,2008.
[19]油气田开发专业标准化委员会.SY/T 5329-2012碎屑岩油藏注水水质指标及分析方法[S].北京:石油工业出版社,2012.
[20]中国海洋石油总公司标准化委员会开发生产专业标准化技术委员会.Q/HS 2042-2014海上碎屑岩油藏注水水质指标及分析方法[S].北京:石油工业出版社,2014.
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