A gas-phase fluidized bed device and catalyst activation method for catalyst preparation and activation

Abstract

The invention discloses a gas-phase fluidized bed device for catalyst preparation and activation and a catalyst activation method; the gas-phase fluidized bed device for catalyst preparation and activation includes a fluidized bed body, the fluidized bed The fluidized bed body includes a reactor and a preheating pipe; the preheating pipe is used for preheating the fluidization gas, and its lower port is inserted into the bottom of the reactor from above, and has the fluidization gas from above flow down until entering the flow-through channel at the bottom of the reactor; the reactor is used to provide a fluidized place for the fluidized gas to activate the catalyst particles; to solve the cumbersome operation of the catalyst in the existing fluidized bed device for oxygen separation transfer collection, The problems of high difficulty in constant temperature control of the reactor and large energy loss are also solved. In addition, the problems of large consumption of fluidizing gas and large loss of catalyst are solved.

Description

technical field [0001] The invention relates to a gas phase fluidized bed device and a catalyst activation method for catalyst activation. Background technique [0002] Partially supported solid catalysts often need to be calcined or further reduced, oxidized, vulcanized, hydroxylated, dehydroxylated, etc. at higher temperatures during the preparation process or before use, so that the passive catalyst (or catalyst precursor ) into an active catalyst, this process is the activation of the catalyst. [0003] The devices commonly used in the activation of supported catalysts in industry mainly include fixed bed and fluidized bed. Wherein, the existing fluidized bed device has a reactor, the bottom of the reactor is provided with an air inlet, and there is a preheating coil under the reactor, and the reactor and the preheating coil are arranged in a heating furnace. The fluidized gas is first preheated in the coil below the fluidized bed, and then enters the fluidized bed rea...

AI Technical Summary

Problems solved by technology

It solves the problems of cumbersome oxygen transfer and collection of catalyst in the existing fluidized bed device, difficulty in constant temperature control of the reactor, and large energy loss. In addition, it also solves the problems of large consumption of fluidized gas and large loss of catalyst.

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