The Study Of Aromatics Extraction

The300000tons/year aromatic extraction device is jilin petrochemical company700000tons/year ethylene project supporting project. This device with gasoline hydrogenation as raw material, through China petrochemical group company petroleum chemical industry science research institute development SAE sulfolane extraction technology, this process is sulfolane and gasoline hydrogenation in extraction tower reverse contact, use of sulfolane to aromatic hydrocarbon good solubility and selectivity, benzene, toluene, xylene dissolved out from raw material, then the separation process separating out of high purity benzene, toluene, xylene. This technology and other extraction process compared with high purity and high yield, and operation cost, low investment of equipment province advantages. This paper focuses on the aromatics device since the driving device with the stable operation of sulfolane solvent quality control, toluene china-africa aromatic content in the unqualified, take more solvent content in oil of higher problem. Through the analysis and experimental operation, it is concluded that the toluene china-africa aromatic content in overweight and operation parameters of raw material, have important relationship; Oxygen and recycling wet solvent for the influence of sulfolane; Ion regeneration process is currently sulfolane regeneration in the process of many best effect regeneration of the lowest consumption, a very ideal of regenerative way; By taking adjustment than water, water quality control and adjust water pumping oil via rate more than such measures as more than a solvent oil of sulfolane content decreased obviously conclusion.