A parameter optimization method for cut stem drying fluidized bed based on quality statistics

Abstract

The invention discloses a quality statistics-based parameter tuning method for a cut stem drying fluidized bed. The method includes the steps of S100, acquiring temperature samples X1, X2 and X3 of areas of the cut stem drying fluidized bed; S110, optimizing the temperature of each area of the cut stem drying fluidized bed by central composite design in response to water content and filling value; S120, determining an optimal temperature of each area of the cut stem drying fluidized bed; S200, after determining the optimal temperatures, acquiring a cut stem flow sample X4 and cut stem residue sample X5 of the cut stem drying fluidized bed; S210, establishing a fitted curve of each of cut stem flow, cut stem residue and in-compartment negative pressure of the cut stem drying fluidized bed, and determining a numerical range of the in-compartment negative pressure of the cut stem drying fluidized bed; S220, encoding data of the in-compartment negative pressure of the cut stem drying fluidized bed according medians or quartiles; S230, processing a variance of variances of the data of the in-compartment negative pressure of the cut stem drying fluidized bed, and determining an optimal in-compartment negative pressure of the cut stem drying fluidized bed.

Description

technical field [0001] The invention relates to the field of tobacco processing, in particular to a method for parameter optimization of a cut stem drying fluidized bed based on quality statistics. Background technique [0002] The drying process of cut stems in the tobacco industry is the key process of the whole process of making cut stems. FBD, Fluid Bed Dryer, is a fluidized bed used for drying and expanding cut stems. It is divided into three areas in control: a drying area in the first area, a setting area in the second area and a material transfer area in the third area. Each area has a separate temperature. The technological task of FBD is to quickly dry and shape the cut stems. The material is conveyed by vibration, and the heat is transferred to the cut stems by air. The moisture in the cut stems is also taken away by the air in the fluidized bed. [0003] The temperature in the three zones of FBD and the negative pressure in the cabin directly affect the moistur...

AI Technical Summary

Problems solved by technology

If the moisture content and filling value of cut stems are not ideal, it will directly affect the quality of finished cut tobacco, as well as abnormal fluctuations in physical and chemical indicators such as draw resistance and combustibility, thus affecting the interests of consumers

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