Application Of Extraction Desulfurization Scheme In Hydrocarbon Recombination System

At present,the use of alkaline cleaning methods for the desulfurization of FCC gasoline,the content of sulfur is still high,can not meet the requirements of finished gasoline blending factory.In order to meet the upgrade of gasoline's V Quality during the gasoline quality requirements,reduce the future transformation of country V gasoline inventories of gasoline can make the deployment pressure,timely deployment of the factory,the Lanzhou Petrochemical Industries Co of the original 800 thousand tons / year refinery hydrocarbon recombination and adaptability to improve production capacity of 1 million 200 thousand tons / year catalytic cracking unit of 60 tons / hour full range FCC gasoline as the raw material,using each gasoline in different solvent solubility,by liquid-liquid extraction method,the FCC gasoline is separated into two parts and sulfur rich oil refining gasoline,gasoline by extraction desulfurization technology,catalytic gasoline extraction desulfurization process.By constantly adjusting the corresponding operation,comparative analysis of data changes,identify the crux of the problem solved in time,finally get the refined gasoline sulfur content of less than 70 ppm below,to meet the requirements of finished gasoline blending,and enriched the content of sulfur rich oil solvent sulfur and some aromatic hydrocarbons is also lower than 30 ppm,in accordance with the quality into the follow-up processing device request.Before and after the production of different purposes,the original device for the process of transformation,the transformation of the device before and after the comparison of the production plan,and on the transformation of the application of the desulfurization scheme is discussed.