Fremgangsmåde til fuldstændig tømning af en katalytisk reaktor

• Main Authors: Dufresne, Pierre, THEVENET, Vincent, BERNARD, Lilian, DARCISSAC, Jean, VIAL, Romain
• Format: Patent
• Language: Danish
• Published: 19.03.2018
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

This invention relates to a method for draining a reactor (1) containing a bed of spent catalyst particles (3) and comprising a downwardly inclined drain tube (2) which opens into the reactor (1). This process comprises the following successive steps: - a first step consisting in causing the flow of a portion of the catalyst bed (3) out of the reactor via said drain tube (2), then - a second stage of suction of the remainder (3') of catalyst, carried out by suctioning the catalyst particles remaining in the reactor (1) at the end of the first stage by means of a flexible suction sleeve (5) introduced into the reactor via said drain tube and connected to a suction system (6) located outside the reactor, said sleeve (5) being provided on its outer surface with protuberances and being movable inside of the reactor, in translation and in rotation with respect to said drain tube (2).