Patent ID: 11884632
Assignee: ZHEJIANG HENGYI PETROCHEMICAL RESEARCH INSTITUTE CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 14:
15. The method of claim 1, wherein the method further comprises: dehydrating the ethanol to obtain an anhydrous ethanol; the ethanol and/or anhydrous ethanol is used for providing at least part of the ethanol in step (1) and/or at least part of the ethanol in the crystallization solvent in step (4); and/or
the used amount of the crystallization solvent in step (4) is 150-400 parts by weight, relative to 100 parts by weight of the light component removal product; and/or
the crystallization temperature is within a range of 10-65° C.