| US 7,528,281 B2 | ||
| Method for vapor phase catalytic oxidation | ||
| Shuhei Yada, Yokkaichi (Japan); Hirochika Hosaka, Yokkaichi (Japan); Kimikatsu Jinno, Yokkaichi (Japan); and Teruo Saito, Yokkaichi (Japan) | ||
| Assigned to Mitsubishi Chemical Corporation, Tokyo (Japan) | ||
| Filed on Jun. 10, 2004, as Appl. No. 10/864,492. | ||
| Application 10/864492 is a continuation of application No. PCT/JP02/13372, filed on Dec. 20, 2002. | ||
| Claims priority of application No. 2001-399118 (JP), filed on Dec. 28, 2001; and application No. 2002-004635 (JP), filed on Jan. 11, 2002. | ||
| Prior Publication US 2004/0250868 A1, Dec. 16, 2004 | ||
| Int. Cl. C07C 51/16 (2006.01) | ||
| U.S. Cl. 562—532 [562/545] | 7 Claims |
| 1. A method for vapor phase catalytic oxidation for obtaining a reaction product gas by using a fixed bed multi-tube heat-exchanger
type reactor provided with a plurality of reaction tubes, circulating a heating medium outside the reaction tubes, and feeding
a raw material gas inside the reaction tubes packed with a catalyst, wherein the method comprises:
conducting a fluid analysis of the heating medium through a simulation analysis using a computer;
predicting peak temperatures of catalyst layers of respective reaction tubes; and
determining a structure of the catalyst layers of the respective reaction tubes so that a value obtained by subtracting an
average value, representing a whole reactor, of peak temperatures of the catalyst layers of the respective reaction tubes
from the peak temperatures, is less than 15° C.
|