Circulating airflow drying device for pilot plant test

Abstract

The invention discloses a circulating airflow drying device for a pilot plant test. The drying device is characterized by comprising a material drying system which comprises an air blower, a circulating airflow drying pipeline, a spiral feeder, a primary cyclone separator, a secondary cyclone separator, a draught fan, a product screw conveyor and the like, wherein an x-shaped drying material distributor controlled by an opening or closing valve plate is arranged at an intersection of the circulating airflow drying pipeline and the cyclone separators; blanking openings of the primary and secondary cyclone separators are provided with an air lock valve respectively, and the air lock valves are connected with the product screw conveyor; and twelve ultrasonic atomizers for regulating the humidity of the airflow drying pipeline are arranged in an induced air box. The whole device has a complete system, and functions of controlling the flow of airflow, controlling the heating of the airflow, accurately controlling the feeding of wet materials, premixing and feeding dry and wet materials, recovering dry powder, measuring the humidity of a product, controlling a mixing ratio of dry and wet powder, automatically regulating and controlling moisture and the like can be realized.

Description

technical field [0001] The invention relates to the field of airflow drying equipment, in particular to a pilot test device suitable for drying powder materials in universities, scientific research departments and related enterprises—a pilot test recirculating air flow drying device. Background technique [0002] At present, airflow drying is often used for drying powders such as starch and modified starch in domestic industry. When colleges, universities, research institutes, and related enterprises conduct relevant research and pilot tests, there are generally the following methods for drying powders such as starch and modified starch: First, use centrifuge drying or suction filtration to solidify. After the liquid is separated, it is dried in an oven. When drying, a cover needs to be added to the surface of the container to prevent the entry of sundries and prevent the material from blowing away. However, the dried powder is often easy to agglomerate and needs to be pulve...

AI Technical Summary

Problems solved by technology

However, there are high energy consumption, prone to sticking to the wall and diarrhea, and it is not easy to adjust the appropriate operating parameters.

Therefore, the powder drying method in the laboratory test is far from the method used in industrial production, which will cause large uncertainties in the promotion of future results.

[0003] However, due to the short drying time, the airflow drying devices commonly used in industrial production generally require higher drying pipes, and the drying pipes often exceed 20 meters. room application

In addition, the industrialized airflow drying equipment is a complete and complex system, consisting of heating boiler, dust removal system, separation system, etc., covering a large area

Therefore, there is currently no airflow drying device tried in the laboratory

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