| abstract |
The invention describes a method and apparatus for reducing the amount of products catalyzed by metal side reactions formed in the system of evaporation and supply of raw materials to the reactor for conversion of methanol to olefins by controlling and / or maintaining the temperature of at least part of the evaporation system and feeding the raw materials to the reactor and / or of the raw material contained therein is below 400 ° C, preferably below 350 ° C, more preferably below 300 ° C, even more preferably below 250 ° C or even below 200 ° C, most preferably below 150 ° C. The temperature can be maintained at a certain level either by thermal insulation with a heat-insulating material at least part of the evaporation system and feedstock supply to the reactor, for example, part of the inlet nozzle, or by means of a cooling system. |