Patent ID: 6433029
Filing Date: 2002-08-13
Classification: C07C

Abstract:
A process wherein methanol is synthesised in a loop from a synthesis gas mixture comprising hydrogen and carbon oxides in at least two synthesis stages, synthesised methanol is separated and at least part of the unreacted synthesis gas is recycled to the first stage, and make-up gas is added to the loop, wherein in least the final synthesis stage of the loop, the synthesis is effected in indirect heat exchange with water under sufficient pressure to prevent boiling, whereby a stream of heated pressurised water is produced, and the make-up gas is produced by a process including catalytically reacting a hydrocarbon feedstock with steam at an elevated temperature and at an elevated pressure equal to, or less than, the pressure of said stream of heated pressurised water and at least part of said steam is introduced by direct contact of said hydrocarbon feedstock with said stream of heated pressurised water.