Method and device for producing formaldehyde

摘要

The invention relates to a method for producing formaldehyde from air, methanol and possibly water in a formaldehyde reactor with silver catalyst (2). By means of a special reaction gas cooling structure (3) the reaction gas is cooled in less than 60 milliseconds. The reaction gas cooler is configured as an internally-cooled horizontal tube heat exchanger (3). A spray cooler (4) can be arranged below the reaction gas cooler (3). The method provided for in the invention allows for high yields, good product quality and a trouble-free service life of the apparatus.