US 12,005,381 B2
Heat integrated process and system for ethanol production using vapor recompression
Jin Ming Zhou, Calgary (CA); Thiago Righi, Calgary (CA); Chenxu Shi, Calgary (CA); Stephan Blum, Calgary (CA); and Virginia Andrade, Calgary (CA)
Assigned to WHITEFOX TECHNOLOGIES LIMITED, London (GB)
Filed by WHITEFOX TECHNOLOGIES LIMITED, London (GB)
Filed on Oct. 17, 2022, as Appl. No. 17/967,144.
Claims priority of provisional application 63/338,725, filed on May 5, 2022.
Claims priority of provisional application 63/256,116, filed on Oct. 15, 2021.
Prior Publication US 2023/0123549 A1, Apr. 20, 2023
Int. Cl. B01D 3/00 (2006.01); B01D 3/14 (2006.01); C12H 6/02 (2019.01)
CPC B01D 3/148 (2013.01) [B01D 3/001 (2013.01); B01D 3/007 (2013.01); B01D 3/146 (2013.01); C12H 6/02 (2019.02); B01D 2257/80 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A heat recovery system, comprising:
a vapor recompression unit connected on a first low pressure side to an overhead vapor output of a distillation unit and connected on a first high pressure side to a first heat exchanger for a condensate vessel;
a first compressor connected on a second low pressure side to an outlet of the condensate vessel and connected on a second high pressure side to a second heat exchanger for a medium pressure receiving system, wherein the first heat exchanger transfers heat from a first vapor of an organic fluid received from the distillation unit via the vapor recompression unit to a working fluid of a nonorganic fluid in the condensate vessel to generate a second vapor of the working fluid that is output via the outlet to the first compressor; and
a second compressor connected on a third low pressure side to the second high pressure side of the first compressor and connected on a third high pressure side to a third heat exchanger included in a high pressure receiving system.