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A Characterization Method of Airflow Drying Processing Strength

A technology of air drying and strength, used in material weighing, instruments, measuring devices, etc.

Active Publication Date: 2021-11-09
CHINA TOBACCO ANHUI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The research on these methods of characterizing the processing strength during the drying process is of positive significance for ascertaining the variation law during the drying process, but each existing method has limitations

Method used

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  • A Characterization Method of Airflow Drying Processing Strength
  • A Characterization Method of Airflow Drying Processing Strength
  • A Characterization Method of Airflow Drying Processing Strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1. The moisture content of the shredded tobacco leaves of the Huangshan A brand air-flow drying group is 18.54%, and the temperature and humidity are not increased by using a tunnel-type temperature-increasing and humidifying machine. The material flow rate of the shredded tobacco before entering the airflow drying machine is 6000kg / h, and the moisture content of the output material after airflow drying is 12.35%. Calculate the dehydration amount M of the drying process 1 It is 423.7kg / h.

[0038] Step 2. By adjusting the damper on the moisture exhaust pipeline of the airflow dryer, ensure that the discharge air lock of the airflow dryer is in a slightly positive pressure state;

[0039] The gas temperature T at the differential pressure flowmeter on the tidal discharge pipeline is 132.5°C, the differential pressure value ΔP of the differential pressure air flow meter on the tidal discharge pipeline is 131Pa, and the oxygen content O of the oxygen content detectio...

Embodiment 2

[0046] Step 1. The moisture content of the shredded tobacco leaves of the Huangshan A brand air-flow drying group was 18.63%, and the temperature and humidity were not increased by using a tunnel-type temperature-increasing and humidifying machine. The material flow rate of the shredded tobacco before entering the airflow drying machine is 4000kg / h, and the moisture content of the output material after airflow drying is 12.19%. Calculate the dehydration amount M of the drying process 1 It is 293.4kg / h.

[0047] Step 2. By adjusting the damper on the moisture exhaust pipeline of the airflow dryer, ensure that the discharge air lock of the airflow dryer is in a slightly positive pressure state;

[0048] The gas temperature T at the differential pressure flowmeter on the tidal discharge pipeline is 143.6°C, the differential pressure value ΔP of the differential pressure air flow meter on the tidal discharge pipeline is 209Pa, and the oxygen content O of the oxygen content detect...

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Abstract

The invention discloses a method for characterizing the processing strength of airflow drying, which is based on the analysis of the two main objects of mass transfer in the process of airflow drying: shredded leaves and hot air. The volatilization of water in the leaf shreds is transferred to the superheated steam, and the volatilization of the water in the leaf shreds is used to characterize the volatilization of low boiling point components in the leaf shreds. At the same time, the superheat of the superheated steam is used to control the speed of water mass transfer. The processing intensity of airflow drying is characterized by the total amount and speed of mass transfer between the process blade silk and superheated steam. The invention adopts a quantitative method to characterize the processing intensity in the airflow drying process, and selects different processing intensities of shredded tobacco according to the quality characteristics of cigarette products and consumption requirements, so as to effectively guide the shredded tobacco processing technology.

Description

technical field [0001] The invention relates to a method for characterizing the processing strength of airflow drying. Background technique [0002] In the tobacco industry, the process of making shreds is mainly to store the leaves after cutting them into shreds, heat and humidify (or not heat and humidify), and then dry them. After the dried shredded tobacco is cooled and shaped, it is blended and flavored. [0003] The drying process is a key process in the cigarette processing process, the purpose is to reduce the moisture content of the shredded leaf, improve the filling performance of the shredded leaf, and improve and enhance the sensory quality of the shredded leaf. At present, the drying methods commonly used in the tobacco industry include sheet drying and airflow drying. The setting of drying process parameters directly affects the physical quality and sensory quality of dried cut leaves. Compared with other silk-making processes, the impact on cigarette aroma cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B3/04G01N5/00
CPCA24B3/04G01N5/00
Inventor 瞿先中蒋士盛邵名伟程雷平谢鹏何金华张超卢幼祥严志景雷振徐辉
Owner CHINA TOBACCO ANHUI IND CO LTD
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