Fluidized bed

Abstract

The invention relates to the technical field of chemical equipment thermal fluidized bed, in particular to a novel fluidized bed. A fluidized bed, consisting of a device body and an auxiliary system; the device body includes a furnace body, a cyclone separator, a feeder, and an ash hopper; the cyclone separator is divided into two stages, and the furnace body is sequentially connected to a first-stage cyclone separation The bottom end of the primary cyclone separator is connected to the furnace through the feeder; the bottom end of the secondary cyclone separator is connected to the ash hopper; the auxiliary system consists of an air supply system, a feeding system, and a pressure and temperature measurement system Composition; the air supply system and the feeding system are connected to the furnace body; the other end of the secondary cyclone separator is connected to the water cooler, induced draft fan and chimney in turn. The long fluidized reactor provided by the invention has a simple structure, is easy to operate, and is suitable for widespread use.

Description

technical field [0001] The invention relates to the technical field of chemical equipment thermal fluidized bed, in particular to a novel fluidized bed. Background technique [0002] The fluidized bed reactor is mainly used in the aromatization reaction. The traditional fluidized bed reactor includes the tower body, the gas inlet and outlet ports at the top and bottom of the tower body, and a gas distributor is set at the gas inlet at the bottom end. Inject into the reactor near the outlet position, mix evenly with the gas coming in from the sparger, and move upwards driven by the gas velocity. At the upper part of the reactor, the catalyst is separated from the gas under the action of gravity, and is exported out of the reactor through the outlet pipe. The disadvantage of this kind of fluidized bed reactor is that the gas is only distributed once, the gas distribution is uneven, and it is easy to generate large bubbles, large back-mixing, short circuit and channeling, which...

AI Technical Summary

Problems solved by technology

The disadvantage of this fluidized bed reactor is that the gas is only distributed once, the gas distribution is uneven, and it is easy to generate large bubbles, large back-mixing, short circuit and channeling, which affect the effective contact time between the gas and the catalyst. and contact area, reducing the reaction efficiency

The depth of reaction cannot be flexibly controlled, and it is easy to cause the secondary reaction of the target product, thus reducing the yield of the target product

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