Control method of rotary drum type cut-tobacco drier three-level regulation

A control method and technology for a drying machine, which are applied in the fields of tobacco preparation, application, and tobacco, can solve the problems of temperature fluctuation of the drying machine cylinder wall and the influence of product sensory quality stability, and achieve the effect of improving product quality stability.

Active Publication Date: 2013-05-08
CHINA TOBACCO FUJIAN IND
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Problems solved by technology

At present, the control mode of adjusting the temperature of the cylinder wall to meet the moisture content of the cut tobacco at the outlet of the cut tobacco is adopted. When the moisture content at the entranc

Method used

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  • Control method of rotary drum type cut-tobacco drier three-level regulation

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Example Embodiment

[0021] Now combined figure 1 The examples illustrate the invention.

[0022] The flow rate of cut tobacco designed for a drum type tobacco dryer is 2000kg / h, and the barrel wall temperature processing range of a certain brand of tobacco tobacco dryer is 116℃ to 120℃, and the reasonable range of hot air flow is 500㎡ / h to 2000㎡ / h. According to the drum drying characteristics, after establishing the regression equation based on the historical data of the drum dryer, the correlation between the dehydration amount corresponding to the drum wall temperature can be calculated as the following formula: Y=1.9* X-86.2 (X is the drum wall temperature, Y is the amount of dehydration). The above formula Y = 1.9* X-86.2 in 1.9 and 86.2 is the result of establishing a regression equation based on the historical data of the tumble dryer.

[0023] The preset barrel wall temperature value is 118℃, the hot air volume is 1200 ㎡ / h, the moisture content of the cut tobacco at the inlet of the drum is...

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Abstract

Disclosed is a control method of rotary drum type cut-tobacco drier three-level regulation. The method can be adopted to maintain invariability of parameters of rotation speed of a rotary drum, temperature of a drum wall, hot wind quantity and the like, and an electric balance flow in a rotary drum inlet is set according to a preset value. When deviation exists between an estimated value of the cut-tobacco moisture content of a rotary drum outlet and a set value of the cut-tobacco moisture content of the rotary drum outlet, the hot wind quantity is preferentially adjusted; when the hot wind quantity reaches an adjusting limit value within a required range of the needed hot wind quantity, and when the deviation still exists between the estimated value of the cut-tobacco moisture content of the rotary drum outlet and the set value of the cut-tobacco moisture content of the rotary drum outlet still, the temperature of the drum wall is readjusted; when the hot wind quantity and the temperature of the drum wall are both in the adjusting limit value which is within the required range, and when the deviation still exists between the estimated value of the cut-tobacco moisture content of the rotary drum outlet and the set value of the cut-tobacco moisture content of the rotary drum outlet, finally flow quantity of the electric weight flow of the rotary drum inlet is adjusted. By the adoption of the three-level regulation, namely the hot wind quantity, the temperature of the drum wall, and the electric balance flow, and therefore the requirement that the estimated value of the cut-tobacco moisture content of the rotary drum outlet reaches the set value is satisfied, and stability of product quality is raised.

Description

technical field [0001] The invention relates to the technical field of production and processing of shredded cigarettes and related fields, in particular to a method for adjusting and controlling the wall temperature of a drum-type shred drying machine. Background technique [0002] The shredded leaf drying process is the key process of shredded processing. Its main function is to dry the shredded tobacco from a relatively high inlet moisture content to an outlet moisture content that meets the cigarette process requirements. The treatment effect has a great impact on the physical quality, sensory quality and chemical composition of the product have a significant impact. Drum type (also known as sheet type) drying machine is a kind of drying equipment commonly used in the drying process of leaf shreds. To meet the target requirement of moisture content of shredded tobacco at the outlet of shredded drying, it can be combined into a variety of control modes for shredded shred...

Claims

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Application Information

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IPC IPC(8): A24B3/10A24B3/04
Inventor 江家森张炜范坚强洪伟龄卢新万常明彬罗登炎
Owner CHINA TOBACCO FUJIAN IND
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