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Low-cost drying technology for grains and agricultural and sideline products

A low-cost technology for agricultural and sideline products, applied in the direction of static material dryers, drying gas arrangement, local agitation dryers, etc., can solve the problems of high equipment investment, achieve low operating costs, low cost, and reduce grain deterioration.

Inactive Publication Date: 2022-06-03
孙聪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the premise is still that water vapor leaves the drying system, and more heat needs to be supplemented. In addition, the investment in equipment is high. It has advantages for specific occasions and high value-added products, but it is not a preferred choice for large-load drying. Program

Method used

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  • Low-cost drying technology for grains and agricultural and sideline products
  • Low-cost drying technology for grains and agricultural and sideline products
  • Low-cost drying technology for grains and agricultural and sideline products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 is suitable for drying of high moisture grains:

Warehouses are divided into storage warehouses, reserve warehouses, transit warehouses, port warehouses, raw material and finished product warehouses, supply warehouses, futures delivery warehouses, and comprehensive warehouses. Requirements are slightly lower. The storage warehouse is located in the grain production area. It is a temporary warehouse that directly purchases grain and oil crops from farmers and transfers them to other transit warehouses or storage warehouses. At this stage, because the grain and oil crops have just been harvested, the moisture content is high, the microorganisms are active, and the grain is prone to heat and mildew. Therefore, it is necessary to control moisture when harvesting grains, and farmers often have bad weather and no drying conditions during the harvesting stage, so they need to be sold in time, which forms a contradiction. If the storage warehouse has good drying condi...

Embodiment 2

[0040] Example 2: Drying of large-scale storage granaries:

The moisture content of the grain transferred from the storage warehouse to the storage warehouse is basically up to the standard, and the required water removal amount is relatively small. However, due to the phenomenon of moisture and heat diffusion, the problem of different moisture content will occur locally. In the early stage of storage, dry air can be regularly introduced according to certain procedures. , for long-term safe storage. Due to the small size of the dehumidifier, it can be moved to the designated location by vehicle, and then connected to the inlet and outlet to dehumidify the air to keep the air humidity inside the grain pile and the air humidity in the upper space of the granary less than 65%, or select the set humidity according to requirements. The storage warehouse can share one dehumidification device with multiple warehouses. For large-scale storage warehouses with multiple warehouses, multi...

Embodiment 3

Embodiment 3 is suitable for drying of agricultural and sideline products:

The characteristics of agricultural and sideline products are that the material has a large water content, a large dehydration load, a fixed production location, and strong seasonality. In order to maintain the flavor and cannot be dried at high temperature, some products need to maintain rehydration and other requirements. They should not be dried under too low humidity conditions, similar to drying in the shade. These drying characteristics are just more suitable for the advantages of the present invention to be used.

[0041] like Figure 5 As shown, the whole process consists of material drying chamber, tray and tray rack, heating heat source, dehumidification device and dilute desiccant regeneration device. Both dehumidification device and MVR are built in the drying boundary area. Because the heat energy required for material preheating and MVR start-up is very small, and the heat source grade r...

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Abstract

The invention discloses a low-cost drying technology for grains and agricultural and sideline products. The low-cost drying technology comprises an air dehumidification technology and a low-energy-consumption concentration and regeneration technology of a dehumidizer. According to the air dehumidification technology, a concentrated solution with hygroscopicity is adopted as a drying agent to be in contact with wet air, and dry air and a diluted dehumidizer solution are obtained; the dry air is used for drying and dehydrating grains and agricultural and sideline products. According to the low-energy-consumption concentration and regeneration technology of the dehumidizer, a diluted dehumidizer solution is subjected to concentration and regeneration treatment, water vapor is pumped out of a dilute solution through combination of a single-stage or two-stage vapor compressor and compressed for heating, the obtained compressed vapor is used for heating the dilute dehumidizer, concentration and regeneration of the dilute dehumidizer are achieved, and water leaves a system in a liquid water form. Gasification latent heat is recycled in the dehumidification process and the regeneration process, energy input of traditional drying is omitted, the system is suitable for drying treatment of large-scale grains and agricultural and sideline products, all-weather starting can be achieved, operation conditions are extensive, and engineering application is easy.

Description

technical field [0001] The invention belongs to the field of agricultural product processing, and relates to the drying of grains such as rice, corn, wheat, and agricultural and sideline products, in particular to a low-cost drying technology for grains and agricultural and sideline products. Background technique [0002] When the grain is harvested, the moisture is usually high, and it is more serious when the grain is harvested and the seed is rushed. When the moisture is high, the grain will be mildewed quickly due to the action of respiration and microorganisms, so it needs to be dried. The usual drying methods include natural drying, ventilation drying, and mechanical drying. Three categories of dry. It is time-sensitive after harvesting, and mechanical drying is required in case of rainy weather. Mechanical drying techniques include convection drying, heat conduction drying, radiation drying, electric field drying, combined drying, etc., but all of them require a lot o...

Claims

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Application Information

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IPC IPC(8): F26B9/06F26B21/00F26B21/04F26B21/08B01D53/26
CPCF26B9/066F26B21/001F26B21/004F26B21/04F26B21/083B01D53/26Y02P70/10
Inventor 孙聪孙毛毛孙远生张介平
Owner 孙聪
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