Abstract: This article introduces the catalyst metering method of the first 1.0 Mt/a counter-current moving bed CCR unit after removing the lock hopper. A set of data between the differential pressure of regeneration riser and the catalyst lift is calibrated by catalyst metering, and the least square method is used in the curve fitting of data. The linear relationship of the curve is good, and it is successfully applied in the control of catalyst circulation rate, the service life tracking of catalysts, the simulation of carbon content of spent catalysts and the adjustment of burning operation, providing guidance for the operation. Also the influencing factors and the matters needing attention in the use of this technology are analyzed, thus improving the continuous metering and control of catalysts in counter-current moving bed CCR process

Key words: continuous catalytic reforming/CCR, counter-current moving bed, catalyst metering