Perforated tumble dryer

Abstract

The invention relates to equipment for quickly and efficiently drying a large amount of solid materials. The equipment is characterized in that: a porous roller is arranged in a box body of which the inner wall is coated with a heat preservation material; a plurality of small holes are formed in the roller; and a sieve screen and a guide plate are arranged on the inner wall of the roller. In the drying equipment, gases such as air, nitrogen, steam, fume, gas and the like are as dry hot media according to site conditions, and the drying equipment has the advantages of high heat exchanging intensity, short drying time, high thermal efficiency, relatively compact volume, high sealing performance, high safety, environment friendliness and the like. The equipment is suitable for drying granular solid materials in industrial and agricultural raw materials and products, and is suitable for drying oil shale and coal when the temperature of the drying hot media is below 300 DEG C.

Description

technical field [0001] The invention relates to a device for drying bulk solid materials, which is suitable for drying granular solid materials in industrial and agricultural raw materials and products. Background technique [0002] In industrial production, in order to meet the requirements of use, reduce the moisture content of materials, improve product quality, classify, or protect the environment, it is often necessary to dry some solid materials. At present, the commonly used drying equipment in the industry includes hot air blowing type, baking type, rotary drum type, fluidized bed type, rotary vane type and other drying equipment. Some of these drying equipment have low efficiency and are not suitable for handling bulk materials. Some are bulky and consume a lot of power. For example, although the rotary drum drying equipment can handle bulk materials, it can only rely on the tumbling of the materials in the rotary drum to increase the chance of contact between the ...

AI Technical Summary

Problems solved by technology

If the speed is slow, the drying time will be prolonged, and the oil contained in the oil shale will be decomposed. If the temperature is high, the oil contained in the oil shale will also be decomposed, resulting in a decrease in the oil recovery rate.

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