Vapor-phase fluidized bed device for preparation and activation of catalyst and catalyst activation method

Abstract

The invention discloses a vapor-phase fluidized bed device for preparation and activation of a catalyst and a catalyst activation method. The vapor-phase fluidized bed device for the preparation and activation of the catalyst comprises a fluidized bed body, wherein the fluidized bed body comprises a reactor and a preheating pipe; the preheating pipe is used for preheating fluidized gas, a lower end port of the preheating pipe is inserted into the bottom part of the reactor from the top part, and the preheating pipe is provided with a flowing passage for the fluidized gas to flow from top to bottom and enter the bottom part of the reactor; the reactor is used for providing a fluidizing place for the fluidized gas to activate the particles of the catalyst. The vapor-phase fluidized bed device solves the problems of complicated oxygen-isolating transfer, collecting and operation of the catalyst in the existing fluidized bed device; difficulty in constant-temperature control of the reactor, and large loss of energy; large consumption amount of fluidized gas, large loss of catalyst, and the like.

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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