| 摘要 |
<p>1,213,045. Controlling exothermic reactions. VULCAN-CINCINNATI Inc. 2 Feb., 1968 [2 Feb., 1967], No. 5441/68. Heading B1X. The temperature of reaction during the catalytic synthesis of methanol is controlled by introducing some of the synthesis gas through perforations 34 into gas that has already passed through catalyst bed 14, prior to reaction in catalyst bed 16. Synthesis gas introduced from the top of conduit 21 passes through zinc oxide-chromium oxide catalyst .14, and then meets further synthesis gas from circumferential manifold 30 and perforations 34, passes through ports 32 in ring 26, is mixed by vanes 36, passes through annular space 25, passes through holes 40 when the mixture is distributed evenly across the plate 38 and then through holes in plate 42 which are more numerous than holes 40 so that the velocity of the gas is reduced as the gases pass through the holes 40, and finally passes to record catalyst bed 16 containing zinc oxide-chromium oxide.</p> |
