Shred drier cylinder wall temperature prediction model based on cut tobacco shred moisture content

A technology of moisture content and silk drying machine, which is applied in the fields of tobacco preparation, application, tobacco, etc., can solve the problems such as the inability to accurately predict the temperature of the cylinder wall, and achieve the effect of increasing the steady state time and improving the accuracy.

Inactive Publication Date: 2015-09-09
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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AI Technical Summary

Problems solved by technology

The above-mentioned cases all focus on the real-time detection of the temperature of the cylinder wall, and it is impossible to accurately predict the temperature of the cylinder wall at the start-up stage of the silk dryer

Method used

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  • Shred drier cylinder wall temperature prediction model based on cut tobacco shred moisture content
  • Shred drier cylinder wall temperature prediction model based on cut tobacco shred moisture content

Examples

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Embodiment 1

[0019] refer to figure 1 As shown, a prediction model for the cylinder wall temperature of the shredded shreds based on the moisture content of the shredded leaves, the shredded tobacco used is the brand of Yunyan (soft treasure), including the following steps:

[0020] 1. The water content of shredded shredded leaves was collected for 5 minutes in the drying process of shredded leaves, and the average value of W1 was 20.673%;

[0021] 2. According to the process technology standard SPW4 set value of 12.7%, calculate △F according to formula 2 W 824.9187l / h;

[0022] 3. According to the process technology standard, the set value of P is -30ubar, and T is calculated according to formula 3 SP 143.76°C;

[0023] 4. The operator will T SP After the value is entered into the formula list, the feedforward control of the wire dryer calculates the cylinder wall temperature T pv It is 144.0°C; the average value of cylinder wall temperature is 144.1°C and the difference is 0.1°C in ...

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Abstract

The invention discloses a shred drier cylinder wall temperature prediction model based on the cut tobacco shred moisture content. The shred drier cylinder wall temperature prediction model includes the following steps: (1) the after-cut tobacco shred moisture content (W1) is collected through a moisture instrument at the position of a belt at an inlet of a tobacco shred temporary storage cabinet; (2) the actual dehydration amount deltaFW is calculated according to the tobacco shred drying outlet moisture content setting value (SPW4); (3) according to the dehydration amount-cylinder wall temperature stepwise regressive equation, the cylinder wall temperature setting valve TSP is calculated; and (4) an operating person inputs the TSP into a formula list, a drier gets into the starting stage, feedforward control is carried out according to the formula, and calculation is carried out to obtain Tpv. By means of the shred drier cylinder wall temperature prediction model based on the cut tobacco shred moisture content, through decreasing of the difference value between the cylinder wall temperature setting value at the starting stage and the cylinder wall temperature actual value in the production steady state, the non-steady-state time of the starting stage is shortened, and decreasing of the number of dry head materials in the thin plate drying process and improving of the moisture content process capability index of discharged materials are achieved.

Description

technical field [0001] The invention relates to a prediction model of moisture content in the shredded tobacco production process, in particular to a prediction model of the wall temperature of a shredded drying machine based on the moisture content of shredded leaves. Background technique [0002] The working status of the thin plate wire dryer includes preheating, starting, production and discharging. In the starting state, since the shredded tobacco has not yet reached the exit of the cylinder, the dryer cannot realize the feedback control of moisture, and the temperature of the cylinder wall is mainly determined by the feedforward control. The calculation formula is: T pv =T sp +(△F W- NOP△F W )×d c ×ck, where T pv The cylinder wall temperature value calculated for the feed-forward control; T sp is the setting value of cylinder wall temperature in formula parameters; △F W is the actual dehydration amount; NOP△F W It is the setting value of the dehydration amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/10A24B3/04
CPCA24B3/10A24B3/04
Inventor 刘继辉方志坤马晓龙韩文杰华一崑杨津晶王慧许维学王玉真
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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