Study On The Removal Of Thiophene Which On Coal-bearing Kaolin

Along with the building up of people environmental protection consciousness, the environmental protection laws is as well strict day by day, the mission to reduce the sulphur content in the gasoline has already become the utmost urgency.Because of consume structure factor influence,the gasoline of our country mainly comes from catalyst crack process, the thiophene is the main sulphur in FCC gasoline, which is difficult to take off. Therefore,taking off the organic sulphur compound of the reaction process especially the thiophene on the home position,it can reduce the sulphur content in the FCC gasoline effectively.This problem mainly study on the relation between the surface acidity characteristic of kaolin and its ability of geting rid of thiophene.By loading phosphate acid or metal oxide,to chang the surface acidity characteristic.And study what happen in the reaction on the kaolin.These conclusion can be taking out :1) There is different surface acidity characteristic on kaolin by different treatment. Among them,the more medium acid sites, the stronger ability of geting rid of thiophene.2) The ability of geting rid of thiophene is influenced by the intensity of medium acid sites. Around about 480℃, the kaolin show the strongest ability of geting rid of thiophene.3) Loading metal oxide, particularly the V-Zn or the V-Co, although few change on the surface acidity characteristic together , its ability of geting rid of thiophene chang a lot.4) Under the condition of experiment, all samples particularly which has stronger ability of geting rid of thiophene,the distributing their MAT manufacture in areasonable scope:The liquid accept rate above 95% and the gasoline rate above 50%.