| 摘要 |
The present invention relates to a method for manufacturing trioxane from an aqueous solution of formaldehyde. The present invention relates to a method for manufacturing trioxane, comprising the steps of: (A) manufacturing trioxane from the aqueous solution of high-concentration formaldehyde in the presence of an acid catalyst; (B) distilling a mixture including the manufactured trioxane; (C) liquefying the distilled mixed gas; (D) separating the liquefied mixed liquid into a water phase and a solvent phase by mixing the liquefied mixed liquid with an extraction solvent; (E) obtaining trioxane from the solvent phase via distillation and separating the water phase into a water phase and a solvent phase by mixing the water phase with the extraction solvent again; and (F) discharging, out of the system, the water phase separated in step (E) and recirculating the solvent phase to be used in step (D) and step (E). |
