Process and apparatus for the production of phosgene
AssigneeBayer MaterialScience AG
InventorsBerthold Keggenhoff, Heinrich Lokum, Jürgen Münnig
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Abstract
The invention relates to a process for the production of phosgene, in which chlorine and carbon monoxide are reacted in the presence of an activated charcoal catalyst in a shell-and-tube reactor which contains a plurality of reaction tubes and a coolant space surrounding the reaction tubes, in which a) cooling of the reaction tubes is from the outside through the coolant space with water by evaporative cooling, and b) operation of the reaction tubes is at a pressure above the pressure in the coolant space.
Claims8
A process for the production of phosgene, comprising reacting chlorine and carbon monoxide in the presence of an activated charcoal catalyst in a shell-and-tube reactor which contains a plurality of reaction tubes and a coolant space that surrounds the reaction tubes, wherein
- a) cooling of the reaction tubes is from the outside through the coolant space with water by evaporative cooling, and
- b) operating the reaction tubes at a pressure that is above the pressure in the coolant space.
A process, for the production of phosgene, comprising reacting chlorine and carbon monoxide in the presence of an activated charcoal catalyst in a shell-and-tube reactor which contains a plurality of reaction tubes and a coolant space that surrounds the reaction tubes, wherein
- a) cooling of the reaction tubes is from the outside through the coolant space with water by evaporative cooling, and
- b) operating the reaction tubes at a pressure that is above the pressure in the coolant space, wherein the absolute pressure in the coolant space is from 0.1 to 0.8 bar.
Dependencies are inferred from the claim text.