Adipic acid particle screening device and method for screening and improving quality of dried adipic acid product by using same

Abstract

The invention discloses an adipic acid particle screening device and a method for screening and improving the quality of a dried adipic acid product by using the same, and belongs to the technical field of adipic acid production. The adipic acid particle screening device comprises a fluidized bed dryer, a large bin, a nitrogen source, a diffuser, a winnowing chamber, a cyclone separator and a packaging weighing device, wherein the winnowing chamber is provided with a gas inlet, a material inlet, an air separation material outlet and a large-particle material outlet, the fluidized bed dryer isconnected with an inlet of the top of the large bin through a tube chain conveyor, the outlet of the bottom of the large bin is connected with a material inlet of the winnowing chamber through a pipeline, the nitrogen source is connected with an inlet of the diffuser through a pipeline, an outlet of the diffuser is connected with a gas inlet of the winnowing chamber, an outlet of a winnowing material is connected with an inlet of the cyclone separator through a pipeline, the cyclone separator is provided with a dust outlet and a small-particle material outlet, and the dust outlet is connectedwith the upper part of the large bin through a pipeline.

Description

Technical field [0001] The invention belongs to the technical field of adipic acid production, and the specific technology relates to an adipic acid particle size screening device and a method for improving the quality of dry adipic acid products by using the particle size screening device. Background technique [0002] The invention is attached to a device for drying adipic acid. The device for drying adipic acid is divided into two processes: a drying process and a packaging process. The raw material for the drying process is high-quality adipic acid with a moisture content of 8-10% (produced by the patent number: CN106810442B, "A Method for the Production of High-quality Adipic Acid"). After the raw material enters the drying process, With the hot air heated by low pressure steam in the internally heated drying fluidized bed, it is in a fluidized state under the action of hot air, and the temperature is controlled at 70-90℃. The hot air takes away the high-quality adipic acid ...

AI Technical Summary

Problems solved by technology

[0003] At present, in all domestic adipic acid production lines, there is no report on the use of particle size screening of dried adipic acid to improve the production process of adipic acid product quality

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