Research On The Industrialization Technology Of Sodium Hexadecyl Dephenyl Ether Disulfonate

Through research, new process was developed with 16-alpha olefins and the dephenyl ether being raw materials. Furthermore, alkylation product was identified to be sodium hexadecyl dephenyl ether disulfonate by nuclear magnetic spectrum(1H NMR), IR spectrum(IR)and liquefied chromatogram and mass spectrum (LC-MS-ELSD). Through experimental studies, the optimum parameters for the synthesis reaction were chosen. Mole yield rate reached up to 60.9%. The alkylation product was transformed to be final product (C_16-MADS) through sulfurization and neutralization reactions. The surface active agent content was as much as 58.44 %(molecular weight 540 on average). The optimum reaction parameters: 90℃reaction temperature, vitriol as the sulfuric agent, 1:1.6 mole ratio between 16-alpha olefins and the dephenyl ether, 6h reaction duration. The article also executed researches on the complex systems of HABS and C_16-MADS. In detail, the complex system was designed to be weak-alkalization oriented and low concentration ASP oriented. In search of optimum complex parameters, other co surfactants were utilized to match up with HABS and C_16-MADS. Finally after optimization, the concentration of alkali, surfactants, the ideal mole ratio between reagents and other critical parameters were identified. As a result, the performance of the complex system all conformed to the criteria of oilfield in term s of interfacial properties, heat&salt tolerance and stability. In conclusion, it helps to realize the weak-alkalization and non-alkalization of the complex system. It also promotes the industrialization of the C_16-MADS as surfactant for oilfield.