Automatic multi-reactor catalyst evaluation method and device with a heavy feedstock

An equipment intended for measurement on an effluent resulting from a chemical reaction taking place in a reactor containing a catalyst, characterized in that it comprises in combination:

• at least two reactors,
• means for injecting at least one feedstock into each reactor,
• means intended for gas and liquid phase separation downstream from each reactor,
• distribution means for sending the gas phase coming from the separation means to first analysis and measuring means while the other gas phases coming from the other separators are discharged, wherein said distribution means comprise at least two inlet ways and two outlet ways, at least one closed-loop circuit divided into four sections by four controlled sealing elements, each of said four ways communicates with a single section so that the inlet ways are connected to two opposite sections and said outlet ways are connected to the other two sections,
• second analysis and measuring means intended for the liquid phase coming from the separation means, and
• means intended for automatic monitoring and control of the chemical reaction in said reactors, of the cycle of analysis and measurement performed on the gas phase and of the cycle of analysis and measurement performed on the liquid phase.