The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2025
Filed:
Nov. 28, 2024
Beijing Institute of Technology, Beijing, CN;
Beijing University of Chemical Technology, Beijing, CN;
Xinyi Tan, Beijing, CN;
Qunsheng Li, Beijing, CN;
Tianwei Tan, Beijing, CN;
Hongkang Zhao, Beijing, CN;
Beijing Institute of Technology, Beijing, CN;
Beijing University of Chemical Technology, Beijing, CN;
Abstract
A device for refining ethanol is disclosed, which includes a fermentation unit, a low-pressure column, a medium-pressure column, a high-pressure column and a membrane separation unit. A method for refining ethanol is disclosed, which specifically includes the following steps: after fermenting the biomass feedstock, feeding fermented mash into a low-pressure column and a high-pressure column which are connected in parallel for refining, mixing two column top distillates, and feeding the mixed column top distillates into a medium-pressure column for further rectification; and purifying the refined ethanol vapor with higher purity obtained after rectification in the medium-pressure column by a membrane separation unit to obtain high-concentration ethanol product vapor. The disclosure couples the differential pressure rectification and the membrane separation unit, adjusts the energy network structure, greatly reduces the vapor usage amount of the whole system, and has the advantages of good separation effect, high product quality and the like.