Grain drying system employing high-voltage electricity to accumulate heat, and drying method of grain drying system

Abstract

The invention relates to a grain drying system employing high-voltage electricity to accumulate heat, and a drying method of the grain drying system. A heating energy storage body, a circulating heat release fan, a high-temperature heat exchanger, an air distributor, an air heater and a drying tower are sequentially connected according to a priority for realizing grain drying, wherein one end of the heating energy storage body is sequentially connected with a heat storage controller and a timing controller; a high-voltage switch is arranged at the other end of the heating energy storage body, and connected with a high-voltage grid; the high-temperature heat exchanger is sequentially connected with an air mixing device and a blower; the air distributor is connected with the air mixing device by a temperature controller; the upper end of the drying tower is connected with damp grain disposal and temporary storage conveying equipment; the lower end of the drying tower is connected with a dry grain inspection, conveying and storage facility; settlement devices are arranged at damp removal ends of the two sides of the drying tower. The drying system can reduce coal consumption and harmful gas emission; the method can effectively alleviate a power demand contradiction, lowers the drying cost, and is high-efficiency and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of grain drying, and in particular relates to a grain drying system utilizing high-voltage electric heat storage and a drying method thereof. Background technique [0002] At present, my country's grain drying technology is still at the level of the 1990s, that is, using direct coal as the heat source. This technology has the following disadvantages: first, the thermal efficiency is low, and the thermal efficiency is only about 55%; second, the pollution is heavy , the emission of harmful gases seriously exceeds the standard, and the existence of huge-scale pollution sources is far from being able to adapt to the country's energy technology development strategy. Therefore, if the era of drying with coal as the main heat source is not completely ended, it will be difficult to achieve the goal of energy conservation and emission reduction in the field of grain circulation in my country. Contents of the invent...

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Problems solved by technology

[0002] At present, my country's grain drying technology is still at the level of the 1990s, that is, using direct coal as the heat source. This technology has the following disadvantages: first, the thermal efficiency is low, and the thermal efficiency is only about 55%; second, the pollution is heavy , harmful gas emissions seriously exceed the standard, and the existence of huge-scale pollution sources is far from being able to adapt to the country's energy technology development strategy

Therefore, if the era of drying with coal as the main heat source is not completely ended, it will be difficult to achieve the goal of energy conservation and emission reduction in the field of grain circulation in my country.

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