| abstract |
PROBLEM TO BE SOLVED: To provide a method capable of simplifying a styrene preparation method by incorporating styrene production into a para-xylene production loop. The method uses at least one chromatography column or adsorption column that functions in a simulated moving bed and can extract para-xylene. The extraction of styrene can be carried out by at least one second chromatography column, but also comprises simple distillation, azeotropic or extractive distillation, liquid-liquid extraction, formation of chemical complexes, membrane separation, adsorption separation and several of these techniques. Other techniques selected from combinations may be used. [Selection diagram] Fig. 1 |