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Characterization method of airflow drying processing strength

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

Active Publication Date: 2020-07-03
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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  • Characterization method of airflow drying processing strength
  • Characterization method of airflow drying processing strength

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1. The moisture content of the cut tobacco leaves of Huangshan brand A airflow drying group is 18.54%, and the tunnel-type warming and humidifying machine is not used for heating and humidification. The material flow rate before the cut tobacco enters the airflow dryer is 6000kg / h, and the moisture content of the material after airflow drying is 12.35%. Calculate the dehydration amount M in the drying process 1 It is 423.7kg / h.

[0038] Step 2. By adjusting the air door on the moisture exhaust pipe of the air dryer to ensure that the air lock of the air dryer is at a slight positive pressure;

[0039] The gas temperature T at the differential pressure flowmeter on the moisture exhaust pipeline is 132.5℃, the differential pressure value ΔP of the differential pressure flowmeter on the moisture exhaust pipeline is 131Pa, and the oxygen content of the oxygen detection sensor in the airflow drying system is O 2.02%, calculated to get the mass flow rate M 2 687kg / h;

[0040]...

Embodiment 2

[0046] Step 1. The moisture content of the cut tobacco leaves of Huangshan brand A airflow drying group is 18.63%, and the tunnel-type warming and humidifying machine is not used for heating and humidification. The material flow rate before the cut tobacco enters the air-flow dryer is 4000kg / h, and the moisture content of the discharged material after air-flow drying is 12.19%. Calculate the dehydration amount M in the drying process 1 It is 293.4kg / h.

[0047] Step 2. By adjusting the air door on the moisture exhaust pipe of the air dryer to ensure that the air lock of the air dryer is at a slight positive pressure;

[0048] The gas temperature T at the differential pressure flow meter on the moisture exhaust pipeline is 143.6℃, ​​the differential pressure value ΔP of the differential pressure flow meter on the moisture exhaust pipeline is 209Pa, and the oxygen content O of the oxygen content detection sensor in the airflow drying system is collected. 3.09%, calculated to get the...

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Abstract

The invention discloses a characterization method of airflow drying processing strength. Analysis is carried out on the basis of two main objects of cut tobacco and hot air for mass transfer in the airflow drying process. Low-boiling-point volatile components in the cut tobacco are transferred into superheated steam along with volatilization of moisture in the cut tobacco in the airflow drying process; volatilization amount of moisture in cut tobacco is used for representing volatilization amount of low-boiling-point components in the cut tobacco, superheat degree of superheated steam is usedfor controlling moisture mass transfer speed, and airflow drying processing intensity is represented from two aspects of total mass transfer amount and speed of the cut tobacco and the superheated steam in the airflow drying process. The characterization method is adopted for representing the processing strength in the airflow drying process, different tobacco shred processing strength is selectedaccording to cigarette product quality characteristics and consumption requirements, and the tobacco shred processing technology is effectively guided.

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 silk-making process is mainly to store the leaves, cut the leaves, heat and humidify (or not heat and humidify), and then dry, and the dried shredded tobacco is cooled and shaped and 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 leaf shreds, improve the filling performance of the leaf shreds, and improve and enhance the sensory quality of the leaf shreds. 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 and sensory quality of the dried leaf shreds, and has an effect on the aroma characteristics and sensory quality of the tobacco leaf compared to other silk making proce...

Claims

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Application Information

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Patent Type & Authority Applications(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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