公开(公告)号：US09738729B2

公开(公告)日：2017-08-22

申请号：US14623853

申请日：2015-02-17

Applicant: API Intellectual Property Holdings, LLC

Inventor： Theodora Retsina ,  Jean-Pierre Monclin ,  Ryan Zebroski ,  Anastasios Trypakis ,  Vesa Pylkkanen

IPC: C08B15/00 ,  C08H8/00

CPC classification number: C08B15/00 ,  C08H8/00

Abstract: The disclosure provides a process for separating fermentation inhibitors from a biomass-derived hydrolysate, comprising: introducing a biomass-derived liquid hydrolysate stream to a stripping column; introducing a steam-rich vapor stream to the stripping column to strip fermentation inhibitors (such as acetic acid) from the liquid hydrolysate stream; recovering a stripped liquid stream and a stripper vapor output stream; compressing the stripper vapor output stream; introducing the compressed vapor stream, and a water-rich liquid stream, to an evaporator; recovering, from the evaporator, an evaporated liquid stream and an evaporator output vapor stream; and recycling the evaporator output vapor stream to the stripping column as the steam-rich vapor stream. Other variations utilize a rectification column to recover a rectified liquid stream and a rectification column vapor stream, and recycle the rectification column vapor stream to the stripping column as the steam-rich vapor stream.