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A moisture analysis method in segmented drying

An analysis method and segmented technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of no segmented dry moisture analysis method, improve product quality and production energy efficiency, and benefit The effect of the design

Pending Publication Date: 2019-01-25
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology

[0003] The process design and optimization of segmental drying needs to accurately grasp the moisture change in the drying process, and determine or modify the stage change points and drying conditions of each stage in the segmental drying process according to the moisture ratio inside the dried material, but There is no moisture analysis method suitable for segmental drying in the prior art

Method used

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  • A moisture analysis method in segmented drying

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Embodiment 1

[0041] A moisture analysis method in segmented drying may comprise the following steps:

[0042] Step A1, using American ginseng as the material to be dried, and according to the data of eight groups of American ginseng constant temperature and constant speed drying experiments in "Research on Rapid Drying Technology of American Ginseng" (from the 2006 master's thesis of "Jilin University", author Ji Qingxiao), this The drying time under eight groups of drying conditions and the material moisture ratio at the end of each drying time were compared with the six semi-empirical drying dynamics of Henderson and Pabis model, Lewis model, Page model, Two-terms model, Modified Page model, and Wang and Singh model. The fitting calculation of the scientific model is carried out, and the fitting results are shown in Table 2 and Table 3 below:

[0043] Table 2

[0044]

[0045] table 3

[0046]

[0047] Note: In Table 2 and Table 3, MR means moisture ratio, t means drying time, R ...

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Abstract

The invention discloses a moisture analysis method in segmented drying, which comprises the following steps of fitting and calculating the drying time and the moisture ratio of the material when the material to be dried is dried at constant temperature and constant speed under different drying conditions with a plurality of drying kinetic models, thereby determining an optimal drying kinetic model; the drying time and the moisture ratio of the material to be dried are calculated according to the optimum drying kinetic model. Fitting the different drying conditions with the drying constants inthe optimal drying kinetic model, thereby determining a functional equation between the drying conditions and the drying constants; The number of drying stages, drying time and drying conditions of each drying stage are selected, and then the optimum drying kinetic model and the drying constant equation are substituted to obtain the moisture change of the material to be dried in the segmented drying. The embodiment of the invention can meet the requirement of analysis and detection of complex moisture change in the segmented drying process, is favorable for designing, optimizing the segmenteddrying process, and improving the product quality and production energy efficiency of the segmented drying.

Description

technical field [0001] The invention relates to the technical field of drying, in particular to a moisture analysis method in segmental drying. Background technique [0002] Drying technology is one of the most widely used agricultural product processing technologies, which consumes a lot of heat energy. Commonly used hot air drying includes constant temperature and constant speed drying and segmental drying. Sectional drying is based on the dehydration characteristics of the material to be dried, changing the drying temperature or wind speed in a timely manner, which can reduce drying energy consumption, shorten drying time, and improve drying quality. Therefore, section drying has been widely concerned and applied. [0003] The process design and optimization of segmental drying needs to accurately grasp the moisture change in the drying process, and determine or modify the stage change points and drying conditions of each stage in the segmental drying process according t...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 吴小华马渊博宁旭丹王鹏孙东亮宇波
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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