| 摘要 |
<p>This is a method for separating conjunct polymers which are formed as byproducts of acid catalyzed isoparaffin-olefin alkylation and sulfolane from a mixture containing conjunct polymers, sulfolane and hydrofluoric acid comprising the sequential step of: (a) separating hydrofluoric acid from the mixture in a stripping or distillation tower (20) with a stripping gas (12) to obtain a bottom intermediate product (16) containing less than 30 percent hydrofluoric acid by weight which is cooled in a cooler (30) and enters a gravitational separator (40); (b) mixing said intermediate stream (16) with a nonpolar extraction solvent (42) to provide a second intermediate stream in the gravitational separtor (40); (c) gravitationally separating said intermediate stream into a less dense extract stream (44) enriched in conjunct polymers and a more dense liquid stream (45) enriched in sulfolane.</p> |
