公开(公告)号：EP3030331A4

公开(公告)日：2017-01-18

申请号：EP14834039

申请日：2014-07-04

申请人： PRAJ IND LTD

发明人： GHANSHAM BABURAO DESHPANDE ,  SHRIKANT SUBHASH RATHI ,  DEVDATTA KRISHNA DESHPANDE ,  PRASANNA SHAM PAI ,  PANDURANG RAM SHINDE

IPC分类号： B01D3/02 ,  B01D3/00 ,  C12G3/12 ,  C12P7/06

CPC分类号： B01D3/002 ,  B01D3/007 ,  Y02E50/17

摘要： A process for producing ethanol by evaporative distillation is disclosed, wherein fermented wash is first evaporated in an evaporator to generate a concentrated ethanol stream. The remaining part of said wash is then further purified in a mash column to isolate remaining ethanol from said wash. In this process as a large part of fermented wash is removed in evaporation process, the load on the mash column is significantly less and hence small size of mash column is required.

公开(公告)号：EP2934712A4

公开(公告)日：2016-08-10

申请号：EP13865276

申请日：2013-11-29

申请人： PRAJ IND LTD

发明人： DESHPANDE GHANSHAM BABURAO ,  RATHI SHRIKANT SUBHASH ,  DESHPANDE DEVDATTA KRISHNA ,  PIMPUTKAR VIJAYKUMAR SURENDRANATH ,  BHOSALE ABHIJIT ANIL

IPC分类号： B01D3/14 ,  C07C29/80 ,  C12P7/08

CPC分类号： C07C29/80 ,  B01D3/002 ,  C12P7/06 ,  Y02P20/57 ,  C07C31/08

摘要： An improved method and apparatus are provided for recovery of high quality ethanol. Substantial energy savings are realized by utilizing a pair of analyzer columns in which overhead vapours from column operating at a higher pressure supplies the heat required for column operating at a lower pressure. The fermented wash is split into two portions of unequal sizes, the larger portion supplied to the higher pressure analyzer column and the smaller portion to the lower pressure analyzer column to achieve efficient primary distillation of ethanol followed by a series of distillation steps including dehydration leading to high quality ethanol products.