C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/638
C07C 29/152 (2006.01) B01J 23/72 (2006.01) B01J 23/76 (2006.01) B01J 23/89 (2006.01) C07C 29/151 (2006.01) C07C 29/80 (2006.01) C07C 31/04 (2006.01)
Patent
CA 1297911
B 31329 Abstract Methanol production In a methanol production process comprising synthesis gas generation, catalytic synthesis, recovery of crude methanol and purification by distillation, organic compounds of higher boiling point than methanol (the so-called "fusel oil" stream) are contacted in liquid form with a gaseous stream to be fed to synthesis gas generation, whereby to convert those compounds to synthesis gas. When an alkali is added to the crude methanol before distillation the contacting step permits utilisation of the organic compounds in the fusel oil, leaving an alkali com- pounds solution, which is withdrawn. The crude methanol resulting from synthesis in reactor 36, cooling at 34 and 40, separation in catchpot 44 and pressure let-down in vessel 48, is distilled in column 50 with overhead separation of volatiles and then in column 58 with recovery of product methanol overhead at 62 and removal of water as bottoms 66. Side stream 68, the fusel oil stream, is pumped by pump 69 through heater 70 to the upper section of tower 12 in which it contacts upwardly flowing natural gas which has been humidified in the bottom section of column 12. The mixture of natural gas, steam and organic compounds from the fusel oil is converted to synthesis gas in steam reforming tube 28.
377939
Imperial Chemical Industries Limited
Marks & Clerk
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