Aeration drying device and method

Abstract

The embodiment of the invention provides an aeration drying device and method. The aeration drying device comprises a shell, a conveying plate chain and a drilling component. The shell is provided with a feed port, a discharge port and a first blowing port. The interior of the shell is sequentially divided into a preheating section, a heat holding section and a drying section. The conveying platechain is arranged in the shell and conveys materials from the feed port to the discharge port through the preheating section, the heat holding section and the drying section. The drilling component isarranged at the tail end of the heat holding section and conducts drilling on the materials. According to the aeration drying device, the shell is divided into the preheating section, the heat holding section and the drying section; the materials are completely preheated at the preheating section to provide the proper growth temperature for microorganisms in the materials; the microorganisms react to generate heat to evaporate water in the materials at the heat holding section; the drilling component conducts drilling on the materials at the tail end of the heat holding section to guarantee inflowing of dry gas and outflowing of moist gas after the materials go into the drying section; it can be guaranteed that water in the materials is sped up to transfer the mass outwards; the drying process is accelerated, and the drying efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of material drying, in particular to a ventilation drying device and a ventilation drying method. Background technique [0002] Biomass power generation is a kind of renewable energy power generation that uses the biomass energy of biomass to generate power. At present, the commonly used form of biomass power generation is the direct combustion of agricultural and forestry wastes. Direct combustion power generation is to directly burn biomass in a boiler to produce steam to drive a steam turbine and generator to generate electricity. [0003] However, due to the high moisture content of biomass itself, its moisture content has a more prominent impact on its calorific value. Generally, the moisture content of biomass entering the furnace is about 45%. When it is directly burned, it will reduce the combustion temperature, increase the loss of exhaust gas, and reduce the boiler energy consumption. thermal eff...

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Problems solved by technology

[0006] The invention provides a ventilation drying device and a ventilation drying method to solve the problem of low drying efficiency of materials in the prior art

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