Study On The Synthesis Of Petroleum Sulfonate In Scraped Film-type Sulfonation Reactor

Falling film vapor sulfonated short reaction time, conversion rate, stable production, high utilization of its raw materials, has been widely used in Japan anionic surfactant production; however has not been resolved sulfonated high viscosity materials engineering problems, and therefore can not be used yet sulfonated petroleum fractions of the oil. Firstly, through the interior of the raw experimental phase sulfonated oil complex that is added by the second-tier dewaxed oil 10% reduction heavy alkyl benzene (called 1# oil), minus three lines dewaxed oil and add 10% heavy alkyl benzene 5% after benzenes (called 2# oil), it sulfonated out products have strong interfacial activity; then by the complex out of the raw oil wiped film sulfonation synthetic petroleum sulfonate small test experiments. Choice of four factors and three levels orthogonal experiment 1# oil optimal conditions for the sulfonation reaction temperature 50 ?, SO3 and aromatics molar ratio 1.55:1, SO3 concentrations of 4.0%, scraper speed 85r/min, the reaction tube 4.0m effective length, aging temperature of 50 ?, aging time 10min; 2# oil sulfonation conditions for optimum reaction temperature 55 ?, SO3 and aromatics molar ratio 1.60:1, SO3 gas concentration of 4.2%, the blade speed 90r/min, aging temperature 50 ?, aging time of 10min. After aging the reaction, the final yield of 1# oil of 135.1%#,2# oil yield of 132.5% of the final. This paper also exhaust sulfonation reaction were detected after analysis 1# oil,2# oil exhaust gas after the reaction with 6.48% and 6.15%, respectively, of the SO3 is converted to SO2, and about 3.68% and 4.12% of free SO3 remain in the exhaust did not participate in the reaction.In the experiment on the basis of the establishment of small scale pilot plant and further carried out trial production. Sulfonation reactor head increases the nitrogen protection, the aging stage switch atomized water spray morpholino treatment, to further improve the ability of the product to reduce oil-water interfacial tension and shorten their time to reach equilibrium interfacial tension and increase the sulfonic acid uniformity and mobility. In the trial process, and also by adjusting the reflux ratio to achieve the neutralization of continuous production.