| 摘要 |
PURPOSE: A sulfones separation process using two-step absorption which uses methanol as polar solvent is provided to minimize operation cost and energy consumed in the separation during a process of separating sulfones from fraction containing sulfones. CONSTITUTION: Diesel containing sulfones is passed through absorber and then sulfones is absorbed in the absorber. A polar solvent is supplied to the absorber, and the absorber is recycled by dissolving and dissembling the sulfones absorbed in the absorber with the polar solvent. The polar solvent, by which the sulfones is dissolved, is passed through active carbon, and the polar solvent is recycled by absorbing and separating the sulfones dissolved in the polar solvent with the active carbon. Hydrocarbon is supplied to the active carbon in which the sulfones is absorbed, and thus the sulfones is separated from the active carbon. The sulfones is separated and collected from the hydrocarbon by distilling the hydrocarbon in which the sulfones is included. The absorber uses acidified silica. The polar solvent uses methanol. The active carbon is made by increasing surface polarity by activating carbon powder, whose pore size is 0.3-0.6 nm, in the temperature of 800 - 1000°C for 4-6 hours as supplying CO2. [Reference numerals] (AA) Ultra low sulfur diesel; (BB) Polar solvent; (CC) Hydrocarbon; (DD) Adsorption or extraction; (EE) Adsorption of activated carbon; (FF) Distillation; (GG) Diesel with sulfur oxides; (HH) Sulfur oxides/polar solvent; (II) Sulfur oxides/hydrocarbon; (JJ) Sulfur oxides |
