| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration of a device or a bad influence on a reaction by preventing accumulation of a catalyst on a recessed part of an inner wall of a reactor; and further to prevent sudden heat evolution caused by contact of the catalyst accumulated on the recessed part of the inner wall of the reactor with the outside air.SOLUTION: In a fluid bed reactor, which is a reactor for storing catalyst particles for the fluid bed, a recessed part is not provided on an inner wall of the reactor with which the catalyst particles in the reactor are brought into contact, or accumulation prevention means is provided on a provided recessed part. |
