Multi-graded concurrent tempering heat pump dehumidification and closed type circulating coarse cereal drying process method

A technology of slow heat pump and drying process, which is applied in the direction of saving seeds through drying and adapting to climate change. It can solve the problems of no recycling of sensible heat and latent heat and low energy rate, so as to reduce energy consumption and achieve good drying uniformity. , the effect of increasing productivity

Inactive Publication Date: 2015-06-03
TIANJIN UNIV OF SCI & TECH
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Problems solved by technology

[0006] The traditional dry waste gas is directly discharged, the sensible heat and latent heat are not recycled, and the energy rate is low, only about 35%

Method used

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  • Multi-graded concurrent tempering heat pump dehumidification and closed type circulating coarse cereal drying process method

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Embodiment Construction

[0016] A multi-stage downstream slow-flow heat pump dehumidification and closed-cycle drying process for miscellaneous grains, characterized in that: the multi-stage downstream slow-flow heat pump dehumidification and drying device is used to dry and dehydrate the miscellaneous grains, and the multi-stage downstream slow-flow heat pump dehumidification and drying device There is a grain storage section that goes through the first level of downstream heating and drying, the first level of slowing, and the first level of exhaust; the second level of downstream heating and drying, the second level of slowing, and the second level of exhaust; Su, three-level exhaust; headwind cooling to reach grain discharge; its process method: according to the variety of miscellaneous grains, the initial moisture content and the change law of the moisture content of miscellaneous grains during the dehydration process, the expert intelligent control system is used to accurately control the paramete...

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Abstract

The invention provides a multi-graded concurrent tempering heat pump dehumidification and closed type circulating coarse cereal drying process method which takes a regenerative cycle heat pump system as heat supply source to dry and dehydrate coarse cereals. The drying process method comprises multi-graded concurrent tempering and countercurrent cooling circulating of the coarse cereals, and drying medium waste gas recycling, dehumidification and circulation. In a full-automatic intelligent drying process, upper computer touch screen software and a lower computer programmable logic controller (PCL) of an automatic control system are adopted, and process parameters including a drying medium temperature, a performance airspeed, tempering time and drying time in a drying process are accurately calculated according to the variety of the coarse cereals and the initial water content of the coarse cereals, so that an optimal drying process method is given. The drying process method is characterized in that when the initial water content of the coarse cereals is 17%-19% and the final water content is 14%, the process parameters are as follows: the drying temperature is 40-60 DEG C, the airspeed is 0.5m / s-2.5m / s, the drying time is 1-1.5 hours and the tempering time is 3.5-5.5 hours.

Description

technical field [0001] The invention relates to the technical field of agricultural product processing and storage, in particular to a multi-stage downstream heat pump dehumidification and closed-cycle miscellaneous grain drying process. Background technique [0002] Miscellaneous grains refer to small grain and bean crops other than bulk crops such as rice, wheat, and corn. It is mainly composed of buckwheat, oats, millet, highland barley; millet, sorghum; mung beans, peas, broad beans, adzuki beans, etc. It is an ideal pollution-free food. Cereals are rich in nutrition and have strong health care functions. It can prevent high blood pressure and cardiovascular disease; the functional active ingredients contained in it have multiple functions such as promoting blood circulation, reducing swelling, and detoxifying; therefore, developing the grain processing industry according to local conditions and using high-tech to control the quality of related processing will promote t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B9/08
CPCY02A40/90
Inventor 朱恩龙郭红莲
Owner TIANJIN UNIV OF SCI & TECH
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