| 摘要 |
Process for the recovery of spent fluorinated sulphonic catalyst from acid soluble oil (ASO) being formed during alkylation of hydrocarbons in presence of the acid catalyst, comprising steps of washing the ASO with water and recovering an aqueous solution of the acid catalyst, neutralizing the acid in the aqueous solution by adding to the solution a basic compound being selected from the group of amino compounds, ammonia and ammonium salts, thereby, forming ammonium salts of the acid catalyst with a melting point at which the obtained acid catalyst salt in a subsequent concentration and drying step is in the form of a melt, drying the melt, and finally recovering the acid catalyst by protonisation of the dried melt with sulphuric acid and distilling off the recovered acid catalyst from the sulphuric acid. |
