High-temperature flue gas medium and short wave infrared and convection dual-function drying device and method

Abstract

The invention discloses a high-temperature flue gas medium and short wave infrared and convection dual-function drying device and a high-temperature flue gas medium and short wave infrared and convection dual-function drying method. The high-temperature flue gas medium and short wave infrared and convection dual-function drying device comprises a drying box body, a material support device, a side-heating type infrared radiated element, a cloth bellow, an air induced pipe, an air heat exchanger and an induced draft fan, wherein the material support device is installed inside the drying box body, a flue gas inlet is formed in the upper portion of one end of the drying box body, the flue gas inlet is communicated with a flue gas inlet of the side-heating type infrared radiated element which is fixedly arranged at the upper portion of the inside of the drying box body, the flue gas inlet of the side-heating type infrared radiated element is connected with a flue gas inlet of the air induced pipe, a flue gas outlet of the air induced pipe is communicated with the air heat exchanger, a hot air outlet of the air heat exchanger is communicated with the cloth bellow which is arranged on the top of drying box body, and the induced draft fan is installed at the lower portion of the drying box body. The high-temperature flue gas medium and short wave infrared and convection dual-function drying device and the high-temperature flue gas medium and short wave infrared and convection dual-function drying method has the advantages of being scientific and reasonable in design, capable of achieving high-temperature flue gas medium and short wave infrared and convection dual-function drying, high in energy utilization rate, capable of saving energy and reducing consumption, high in material drying rate and good in quality of dry products.

Description

technical field [0001] The invention belongs to the technical field of drying, and in particular relates to a short-wave infrared and convection double-effect drying device and method for high-temperature flue gas, which can be applied to drying and dehydration of grain, agricultural and sideline products, and the like. Background technique [0002] Drying is an important means of grain, fruit and vegetable processing and long-term storage. The principle is to use certain technology to remove moisture from fresh grain and fruit and vegetable raw materials, and reduce its water activity to a level where microorganisms are difficult to survive and reproduce, so that the product has It has good preservation ability and basically maintains the original nutritional content. At the same time, the dried product has less water content and is easy to transport. It can effectively adjust the uneven supply in the region and the off-peak production season. [0003] Grain and fruit and v...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings and deficiencies of low energy efficiency caused by the high-temperature flue gas being mainly used in the low-grade stage during the hot-air drying process of grains, fruits and vegetables, and to provide a method that can fully obtain high-temperature flue gas at both high and low grades. A high-temperature flue gas short-wave infrared and convection double-effect drying device and method that can improve the energy utilization efficiency of flue gas and realize energy-saving drying

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