Search International and National Patent Collections

1. (WO2013110369) PROCESS AND PLANT FOR DISTILLATION OF METHANOL WITH HEAT RECOVERY

Pub. No.:    WO/2013/110369    International Application No.:    PCT/EP2012/072443
Publication Date: Fri Aug 02 01:59:59 CEST 2013 International Filing Date: Wed Nov 14 00:59:59 CET 2012
IPC: B01D 3/00
B01D 3/14
Applicants: CASALE SA
Inventors: FILIPPI, Ermanno
OSTUNI, Raffaele
Title: PROCESS AND PLANT FOR DISTILLATION OF METHANOL WITH HEAT RECOVERY
Abstract:
Process and plant for refining a stream of crude methanol (103), comprising: pre-treatment of the crude methanol in a topping stage (100), for the separation of volatile components, at a defined topping pressure (p1); distillation of methanol with at least one final distillation step of methanol at a defined distillation pressure (p4), in which said distillation pressure (p4) is greater than the topping pressure (p1), and in which a gaseous stream of distilled methanol (440), which is produced in the final distillation step, is used to supply at least part of the heat for the pre- treatment topping step.