Question

Formaldehyde production manual process description

Answer 1

Explanation:

Formaldehyde is produced from methanol substantially by means of two types of processes: the oldest one is based on silver catalyst and is working at a methanol concentration above the explosion limit, the most modern one is based on metal oxides catalyst and is working at a methanol concentration under the explosion limit.

The main features of the two types of processes (the former called “S” and the latter called “MO”) are compared hereunder.