| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for discharging a hydrogenation catalyst from a hydrogenation catalyst in which risk such as firing is remarkably reduced and high in safety.SOLUTION: From a hydrogenation reactor filled with a carrier type hydrogenation catalyst, the hydrogenation catalyst is discharged by the following process: an inert gas is circularly fed under pressure after the stop of the feed of hydrogen to the hydrogenation reactor, the exhausted component is introduced into a gas-liquid separator, a gas component is fed to flammable gas treatment equipment, further a liquid component is fed to waste oil treatment equipment, when the concentration of the flammable gas in the exhaust gas reaches below the explosion lower limit value, an oxygen-containing gas is fed, the hydrogenation catalyst inactivated, thereafter, the reactor is cooled, and the inactivation treatment-finished carrier is discharged.SELECTED DRAWING: None |
