Process

摘要

A process is described for the production of formaldehyde comprising (a) subjecting methanol to oxidation with air in a formaldehyde production unit thereby producing a formaldehyde-containing stream: (b) separating said formaldehyde-containing stream into a formaldehyde product stream and a formaldehyde vent gas stream; wherein the vent gas stream, optionally after treatment in a vent gas treatment unit. is passed to one or more stages of: (i) synthesis gas generation. (ii) carbon dioxide removal, (iii) methanol synthesis or (iv) urea synthesis. The formaldehyde produced by the above process may be integrated into a process for the production of a formaldehyde-stabilised urea which uses synthesis gas generation to furnish methanol and ammonia starting materials for formaldehyde and urea production respectively.