A method and device for drying granular materials

Abstract

The invention discloses a method and a device for drying particulate materials. The device comprises a bin body, a tail gas collector, a heat exchanger and a carrier gas distributor, wherein the tailgas collector, the heat exchanger and the carrier gas distributor are sequentially arranged in the bin body from top to bottom and are fixedly connected with the bin wall on the bin body; the tail gascollector, the heat exchanger and the carrier gas distributor form a drying unit, and one or more drying units can be arranged in the bin body. The particulate materials enters from a feeding port ofthe drying device, and is heated by the heat exchanger to evaporate water to be dried. The carrier gas enters the carrier gas distributor and is uniformly distributed into the material layer in the gas carrier angle tube; the carrier gas is discharged out of the drying device after being collected by the tail gas collector; the drying materials is discharged out of the drying device through the pipeline joint of the drying device. The device has the advantages that the heat exchange area is small, the device specification is small, the filling rate is high, the power consumption is small andthe investment cost is low.

Description

technical field [0001] The invention belongs to the technical field of drying, in particular to a method and a device for drying granular materials in a vertical static device. Background technique [0002] Rotary cylinder dryer is a large horizontal drying equipment, which uses cylinder rotation and air convection to transfer and dry materials. It has a large processing capacity, but its thermal efficiency is low when the hot air temperature is not high. Therefore, various forms of improved structures appeared later, among which there is a steam tube rotary drum dryer that uses steam for indirect heating, and the thermal efficiency is greatly improved. [0003] The steam tube rotary drum dryer is a large-scale energy-saving drying equipment. It has obvious advantages such as reliable operation and energy saving in industries that need to process materials in large quantities. It can be widely used in drying various non-sticky powder and granular materials, and has been prom...

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Problems solved by technology

[0004] Although the steam tube rotary drum dryer has its obvious advantages, it still has the following disadvantages: 1. The device is placed horizontally and occupies a large area

2. Low filling rate and large equipment investment

3. The cylinder needs to be driven by the motor to rotate, and the power consumption is high

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