Method for refining carbonization crude benzole
The invention relates to a method for refining coking benzol, consisting of a process of benzol pretreatment and benzene extractive distillation, a hydrofining process of toluol, xylene distillation and a toluene disproportionation process. The invention has the advantages of that high-purity and hi...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a method for refining coking benzol, consisting of a process of benzol pretreatment and benzene extractive distillation, a hydrofining process of toluol, xylene distillation and a toluene disproportionation process. The invention has the advantages of that high-purity and high-quality product of the benzene, toluol and/or thiophen can be obtained; device investment is reduced by times; processing cost is also greatly reduced without environmental pollution; product proportion can be regulated according to market requirement. |
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