本文選題：雙長鏈醇醚羧基甜菜堿　切入點：合成　出處：《江南大學》2015年碩士論文　論文類型：學位論文

【摘要】：堿-表面活性劑-聚合物(ASP)三元復合驅是我國化學驅提高石油采收率的主要技術,但近年來的礦場試驗表明,使用堿尤其是強堿會帶來一些副作用,因此以SP二元驅取代ASP三元驅成為新的研究方向。研究發(fā)現(xiàn),雙十二烷基甲基羧基甜菜堿(di C12B)在無堿條件下具有優(yōu)良的降低原油/水界面張力性能,但由于具有雙長鏈烷基,其水溶性較差并且在油砂/水界面有較大的吸附損失。另一方面以椰子油醇聚氧乙烯醚(C12-14EO2OH)為原料合成的雙長鏈醇醚甲基羧基甜菜堿,不僅保留了di C12B的優(yōu)良性能,而且產(chǎn)品的水溶性有顯著改善,在油砂/水界面的吸附損失明顯減小。由于工業(yè)級醇醚中EO數(shù)具有較寬的分布,有關EO數(shù)對性能的影響尚不清晰,為此本研究試圖合成具有單一EO數(shù)的雙十二醇聚氧乙烯醚甲基羧基甜菜堿系列產(chǎn)品,以考察EO數(shù)對有關驅油性能的影響。以溴代十二烷和一縮二乙二醇(或二縮三乙二醇,三縮四乙二醇)為原料,合成了單分布的十二醇聚氧乙烯醚(C12EOnOH,n=2,3,4),再經(jīng)氯代、與一甲胺縮合、最后與氯乙酸鋰反應得到了目標產(chǎn)物雙十二醇聚氧乙烯醚甲基羧基甜菜堿(di C12EOnB,n=2,3,4)。核磁、質譜、化學分析等表征證明所得產(chǎn)品的分子結構與目標化合物一致。對diC12EOnB(n=2,3,4)系列產(chǎn)品的水溶性、基本表面活性、降低正構烷烴/水和大慶原油/地層水界面張力的特性以及在石英砂/水界面的吸附損失進行了評價。結果表明,di C12EOnB(n=2,3,4)在水中的溶解度隨EO數(shù)的增加而增加,25?C時di C12EO4B的溶解度達到1.5?10-4 mol/L,是di C12B的3倍。di C12EOnB(n=2,3,4)基本保持了di C12B的高表面活性。cmc在(1.15~2.0)?10-5 mol/L,?cmc為27.0~29.5 m N/m,在空氣/水界面上的飽和吸附量??為(6.2~5.7)?10-10 mol/cm2。其中隨著n的增大,cmc,?cmc以及分子截面積a?略有增大。di C12EOnB(n=2,3,4)單獨使用時降低正構烷烴/水界面張力的性能優(yōu)于di C12B,其中di C12EO2B和di C12EO4B分別能將C13~C15和C7~C9正構烷烴/水界面張力降至超低(0.01 m N/m),di C12EO3B能將C7~C16正構烷烴/水界面張力降至10-2 m N/m數(shù)量級。在降低大慶原油/地層水界面張力方面,di C12EOnB(n=2,3,4)單獨使用能將大慶原油/地層水界面張力降至10-2 m N/m數(shù)量級;其中di C12EO2B親油性仍偏大,通過與水溶性同系物C16B復配,能在較寬(1.25~7.5 mmol/L)的總濃度范圍內(nèi)將大慶原油/地層水界面張力降至超低;di C12EO3B親油性略偏大,與水溶性同系物C16B復配能將大慶原油/地層水界面張力降至超低,但合適的總濃度范圍縮小(5~7.5 mmol/L);而di C12EO4B親水性略偏大,與親油性同系物di C12B和水溶性同系物C16B三元復配,能在較寬(0.625~5.0mmol/L)的總濃度范圍內(nèi)將大慶原油/地層水界面張力降至超低。三種化合物中di C12EO2B為最佳。di C12EOnB(n=2,3,4)在石英砂/水界面的吸附具有飽和吸附量,飽和吸附量隨n增加略有下降,其中n值最大的di C12EO4B的飽和吸附量比di C12B下降了35%�？傮w上EO基團的引入對降低在石英砂/水界面的吸附損失影響不夠顯著。
[Abstract]:Alkali surfactant polymer (ASP) three ASP flooding is the main technology to improve oil recovery of chemical flooding, but the field tests show that in recent years, especially the use of alkali and alkali will bring some side effects, so SP to two yuan three yuan to replace the ASP drive drive has become a new research direction. Found that di dodecylmethyl carboxybetaine (DI C12B) in non alkaline conditions with excellent performance to reduce the crude oil / water interfacial tension, but because of the double long Lian Wanji, due to its poor water solubility and in oil / water interface has larger adsorption loss. On the other hand with alkyl polyoxyethylene ether (C12-14EO2OH) as raw materials the synthesis of double long-chain carboxyl betaine methyl ether, not only retains the excellent performance of di C12B, and the water solubility of the product has been improved in oil / water interface adsorption loss decreases obviously. The industrial grade has a number of EO in ether Wide distribution, about the effect of EO number on the performance is not clear, the purpose of this study is to synthesize EO single number Double Twelve alcohol polyoxyethylene ether methyl carboxyl betaine series of products, in order to study the influence of EO number on the oil displacement performance. Twelve alkyl bromide with diethylene glycol and triethylene glycol (or two. Three shrink four ethylene glycol) as raw materials, twelve alcohol polyoxyethylene ether single distribution were synthesized (C12EOnOH, n=2,3,4), and then by chlorination, condensation and methylamine, finally reacted with chloroacetic acid lithium to obtain target products Double Twelve methyl alcohol polyoxyethylene ether (DI C12EOnB, n=2,3,4 carboxybetaine). NMR, mass spectrometry, chemical analysis indicates that the molecular structure of the target compound and the product of diC12EOnB (n=2,3,4) series of products of the basic water solubility, surface activity, lower n-alkanes / water and Daqing crude oil / water interfacial tension characteristics and Quartz sand / water interface adsorption loss were evaluated. The results showed that di C12EOnB (n=2,3,4) in water solubility increases with the increase in the number of EO increased 25? C solubility of di C12EO4B reached 1.5? 10-4 mol/L, di C12B.Di C12EOnB (n=2,3,4) 3 times remained the high surface activity of.Cmc di C12B (1.15~2.0) in 10-5? Mol/L, CMC? 27.0~29.5 m N/m, the saturated adsorption capacity of the air / water interface (6.2~5.7) for??? 10-10 mol/cm2. with the increase of N, CMC, CMC and a molecular cross-sectional area of?? (n= 2,3,4 C12EOnB.Di increased slightly when used alone) reduce the n-alkane / water interfacial tension is better than di C12B, di C12EO2B and di C12EO4B respectively, which can be C13~C15 and C7~C9 alkanes / water interfacial tension to ultra low (0.01 M N/m), di C12EO3B C7~C16 can be normal alkane / water interfacial tension to 10-2 m N/ m magnitude. In lower Daqing crude oil / formation Water interfacial tension, di C12EOnB (n=2,3,4) can be used alone in Daqing crude oil / water interfacial tension to 10-2 m N/ m magnitude; Di C12EO2B lipophilic is still relatively large, and the water soluble homologue C16B was in wide (1.25~7.5 mmol/L) Daqing crude oil / water interfacial tension to super low total concentration range; Di C12EO3B lipophilic slightly, and the water soluble compound can be C16B homologues of Daqing crude oil / water interfacial tension to low, but the total suitable concentration range reduced (5~7.5 mmol/L); while di C12EO4B is slightly larger and hydrophilic, lipophilic homologues Di and water C12B soluble homologue C16B three compound, in a wide (0.625~5.0mmol/L) Daqing crude oil / water interfacial tension to ultra low concentration range. The total three compounds in di C12EO2B is the best.Di C12EOnB (n=2,3,4) has full adsorption on quartz sand / water interface And the amount of adsorption and saturated adsorption decreased slightly with the increase of n. The saturated adsorption capacity of di C12EO4B with maximum n value decreased by 35%. compared with that of di C12B. In general, the introduction of EO group had little effect on reducing the adsorption loss at quartz sand / water interface.

【學位授予單位】：江南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE357.46

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