BigPatents India

The invention relates to a reactor (1) for producing phosgene involving the gas-phase reaction of carbon monoxide and chlorine in the presence of a fixed-bed catalyst. The inventive reactor comprises a bundle of parallel contact tubes (2), which extend in the longitudinal direction of the reactor and whose ends are fixed in tube bases (3), and the reactor (1) has a cap (4) at both ends thereof. The reactor also comprises baffle plates (6), which are placed in the space between the contact tubes (2) while extending perpendicular to the longitudinal direction of the reactor and which do not obstruct passage openings (7) on the reactor inner wall, said passage openings being located opposite one another in an alternating manner. The contact tubes (2) are filled with the fixed-bed catalyst, the gaseous reaction mixture is guided from one reactor end while passing through a cap (4) and the contact tubes (2), and is withdrawn from the opposite reactor end while passing through the second cap (4). A liquid heat exchange medium is guided through the space (5) between the contact tubes (2), and the reactor (1) is free from tubes in the area of the passage openings (7).