| 摘要 |
Methanol synthesis in a synthesis loop having at least two synthesis stages wherein methanol is synthesised from recycled unreacted gas, optionally together with part of the make-up gas, in one or more synthesis stages to give a stream of reacted gas, make-up gas is then added and prior to separation of the synthesised methanol, a further amount of methanol is synthesised from the resultant mixture in one or more further synthesis stages, with at least the final synthesis stage of the loop being effected in indirect heat exchange with pressurised water as a coolant. Preferably the pressurised hot water from the final synthesis stage of the loop is employed to saturate a hydrocarbon feedstock from which the make-up gas is produced by steam reforming. |
