复合溶剂萃取法处理油基钻屑实验研究
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摘要
考察了烃类萃取剂A、烃类萃取剂B、烃类萃取剂C、四氯化碳、苯、石油醚对岩屑的处理效果,选择出最优的萃取剂进一步复配,得到一种由烃类萃取剂A、烃类萃取剂B、石油醚组成(体积比为6∶4∶1)的高效环保型复合化学萃取剂。考察了剂屑比(m L∶g)、萃取温度、萃取时间、搅拌速率、盐(Na Cl)对萃取效果的影响,结果表明,萃取最佳条件为:萃取剂∶油基钻屑=4∶1 m L/g,萃取温度35℃,萃取时间35 min,搅拌速率130 r/min,Na Cl加量1%。在最佳萃取条件下,萃余残渣含油量可降至0. 57%,达到《含油污泥处置利用控制限值》(DB61/T 1025—2016)要求。
The effects of hydrocarbon extractant A,hydrocarbon extractant B,hydrocarbon extractant C,carbon tetrachloride,benzene and petroleum ether on the cuttings were investigated. The best extractant was selected for further compounding,and an efficient and environment-friendly compound chemical extraction agent was obtained. The compound extractant consists of hydrocarbon extractant A,hydrocarbon extractant B and petroleum ether( volume ratio 6 ∶ 4 ∶ 1). The ratio of extraction and drilling cuttings( m L∶ g),extraction temperature,extraction time,stirring rate,salt( NaCl) effect on the extraction efficiency was investigated. The results show that the optimum extraction conditions: extraction agent ∶ oil based drilling = 4 ∶ 1 m L/g,extraction temperature of 35 ℃,extraction time 35 min,stirring rate130 r/min,the amount of salt 1%. Under the best extraction conditions,the cuttings oil content decreased to 0. 57%,and reached the"control limit of oily sludge disposal and utilization"( DB61/T 1025—2016)requirement.
The effects of hydrocarbon extractant A,hydrocarbon extractant B,hydrocarbon extractant C,carbon tetrachloride,benzene and petroleum ether on the cuttings were investigated. The best extractant was selected for further compounding,and an efficient and environment-friendly compound chemical extraction agent was obtained. The compound extractant consists of hydrocarbon extractant A,hydrocarbon extractant B and petroleum ether( volume ratio 6 ∶ 4 ∶ 1). The ratio of extraction and drilling cuttings( m L∶ g),extraction temperature,extraction time,stirring rate,salt( NaCl) effect on the extraction efficiency was investigated. The results show that the optimum extraction conditions: extraction agent ∶ oil based drilling = 4 ∶ 1 m L/g,extraction temperature of 35 ℃,extraction time 35 min,stirring rate130 r/min,the amount of salt 1%. Under the best extraction conditions,the cuttings oil content decreased to 0. 57%,and reached the"control limit of oily sludge disposal and utilization"( DB61/T 1025—2016)requirement.
引文
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[3]李志勇,韦火云,马洪涛,等.一种新型除油机理及含油钻屑除油技术[J].钻井工程,2017,32(2):77-83.
[4]马金胺.热化学清洗与溶剂萃取法处理页岩油泥[D].吉林:东北电力大学,2015.
[5] Huang Xiuli,Lang Chunyan,Ma Yugang,et al. Advance on oil shale solvent extraction technology[J]. Modern Chemical Industry,2012,32(9):12-15.
[6]张秀霞,耿春香,冯成武.溶剂萃取-蒸汽蒸馏法处理含油污泥[J].上海环境科学,2000,19(5):228-229.
[7]林秋明.化学药剂对含油污泥除油脱水的研究[D].广州:广东工业大学,2011.
[8]何林,孙文郡,李鑫钢.溶剂萃取在油砂分离中的应用及发展[J].化工进展,2011,30(1):186-189.
[9] Hildebrand J H,Scott R L. The Solubility of Nonelectrolytes[M]. New York:Reinhold,1950.
[10]徐文明.关于化工工艺流程中萃取剂的选择研究[J].化工管理,2016(13):220-221.
[11]张威.浅谈关于化工工艺流程中萃取剂的选择[J].化学工程与装备,2011(6):86-87.
[12]王照锐.浅谈化工工艺流程中的萃取剂选择要点[J].中国石油和化工标准与质量,2012,32(8):52.
[13]车承丹,吴少林,朱南文,等.含油污泥石油醚浸提技术研究[J].安全与环境学报,2008,8(2):56-58.
[14]孙启,杨丽梅,黄松涛,等.协同萃取机制的研究现状及展望[J].稀有金属,2016,40(11):1178-1187.
[15]朱冬昌,付永强,马杰,等.长宁、威远页岩气开发国家示范区油基岩屑处理实践分析[J].石油与天然气化工,2016,46(2):62-66.
[16]唐昊渊.含油污泥热处置资源化试验研究[D].杭州:浙江大学,2008.
[17] Nagaphani K B,Chong H S,Man S L. Synergistic solvent extraction of manganese(II)with a mixture of Cyanex 272and Cyanex 301 from chloride solutions[J]. Hydrometallurgy,2013,10(9):84-89.
[18]潘文慧.新型液相微萃取技术在环境污染物中的应用[D].武汉:华中师范大学,2008.
[19] Dükkanc I M,Gündüz G. Ultrasonic degradation of oxalic acid in aqueous solutions[J]. Ultrasonics Sonochemistry,2006,13(9):517-522.
[20] Zhang Ju,Jian B L,Ronald W Thring,et al. Oil recovery from renery oily sludge via ultrasound and freeze/thaw[J]. Journal of Hazardous Materials,2012,15(2):195-203.