公开(公告)号：US20190270716A1

公开(公告)日：2019-09-05

申请号：US16346361

申请日：2017-10-30

Applicant: SHELL OIL COMPANY

Inventor： Juben Nemchand CHHEDA ,  Charu EHRENREICH-GUREJA ,  Jean Paul Andre Marie Joseph Ghislain LANGE

IPC: C07D307/48 ,  B01D3/14 ,  B01D3/36

Abstract: A process for the extraction of furfural from a composition comprising furfural, water, at least one organic acid and an oxygenate solvent with a boiling point higher than that of furfural. The process includes: (a) subjecting the composition to a first liquid-liquid separation step to provide: (i) an organic phase; (b) subjecting the organic phase of step (a) to a first distillation step to provide: (i) a first top stream; (c) subjecting the first top stream of step (b) to a second liquid-liquid separation step to provide: (i) a second top stream; and (d) subjecting the second top stream of step (c) to a second distillation step to provide: (i) a third top stream comprising a furfural-water azeotrope, and (ii) a third bottom stream comprising furfural.

公开(公告)号：US20190263767A1

公开(公告)日：2019-08-29

申请号：US16346398

申请日：2017-10-30

Applicant: SHELL OIL COMPANY

Inventor： Juben Nemchand CHHEDA ,  Charu EHRENREICH-GUREJA ,  Jean Paul Andre Marie Joseph Ghislain LANGE

IPC: C07D307/50 ,  C07D307/48

Abstract: Disclosed is a process for the extraction of furfural which includes: (a) subjecting a composition comprising furfural, water, at least one acid and an aromatic solvent, with a boiling point higher than that of furfural, to a first separation step providing: (i) an organic phase, and (ii) an aqueous phase; (b) subjecting the aqueous phase of step (a) to a first distillation step to provide: (i) a first in top stream comprising a furfural-water azeotrope; (c) subjecting the first top stream of step (b) to a second separation step to provide: (i) a second top stream comprising a portion of the furfural-water azeotrope; (d) subjecting the second top stream of step (c) to a second distillation step to provide: (i) a third top stream enriched with the furfural-water azeotropic mixture; (e) subjecting the organic phase of step (a) to a third distillation step to provide: a fourth top stream comprising furfural.