Production of formaldehyde from ch4 and h2s

Details Production of formaldehyde from ch4 and h2s Production of formaldehyde from ch4 and h2s

C - Chemistry, Metallurgy

07

C

C07C 45/82 (2006.01) B01J 21/06 (2006.01) B01J 21/08 (2006.01) B01J 23/16 (2006.01) B01J 23/20 (2006.01) C07C 45/00 (2006.01) C07C 45/27 (2006.01) C07C 45/32 (2006.01) C07C 45/33 (2006.01) C07C 45/49 (2006.01) C07C 319/00 (2006.01) C07C 319/02 (2006.01) C07C 319/14 (2006.01) B01J 23/24 (2006.01) C07C 321/04 (2006.01) C07C 321/14 (2006.01)

Patent

CA 2368048

A method wherein a sour natural gas stream can be treated to produce primarily carbon monoxide from methane, and the carbon monoxide and hydrogensulfide are reacted to produce methyl mercaptans, (primarily methanethiol (CH3SH) and a small amount of dimethyl sulfide (CH3SCH3)). The methyl mercaptans preferably are passed in contact with a catalyst comprising a supported metal oxide or a bulk metal oxide in the presence of an oxidizing agent and for a time sufficient to convert at least a portion of the methyl mercaptan to formaldehyde (CH2O), and sulfur dioxide (SO2).

Procédé qui consiste à traiter un flux de gaz naturel sulfuré afin de produire principalement du monoxyde de carbone à partir du méthane, puis à faire réagir le monoxyde de carbone et l'hydrogène sulfuré afin de produire des méthyl-mercaptans (principalement le méthane-thiol (CH¿3?SH) et une petite quantité de diméthyl-sulfure (CH¿3?SCH¿3?)). Les méthyl-mercaptans sont de préférence mis en contact avec un catalyseur comprenant un oxyde métallique supporté ou un oxyde métallique en vrac, en présence d'un agent oxydant et pendant un temps suffisant pour convertir au moins une partie du méthyl-mercaptan en formaldéhyde (CH¿2?O) et en dioxyde de soufre (SO¿2?).

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