Hot-shaft mixing drying process and device

Abstract

The invention relates to a conduction heating drying technical field, and discloses a hot-shaft mixing drying process and a device. The device consists of a bottom of a single drying unit layer or multiple superimposed drying unit layers and a drying material box (7), wherein each drying unit layer is structurally formed by arranging two hollow blade shafts (1) with a group of fan-shaped blades which are arranged in pairs inside a rectangular shell (3) and a feeding system; the feeding system is arranged above the two parallel hollow blade shafts (1); and the feeding system comprises a helical feeding system for drying wet powder materials and paste materials or a carriage feeding system for drying liquid materials. Previously-paved dry materials inside the drying layers are adequately mixed with the newly-fed wet material to dry, so the heat exchanging area can be improved, the drying efficiency can be improved, the heat transfer of the wet material can be improved, and the drying speed of the material can be improved; and the situation that the the shaft is easily wound by the fed wet material can be avoided, so the power of the dry-shaft device can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of conduction heating and drying, and is especially suitable for a thermal shaft mixing drying process required by industries such as the chemical industry, the environmental protection industry, the metallurgical industry and the energy industry, etc., which require drying and dehydration of water-containing powder materials, paste materials, and liquid materials and equipment. Background technique [0002] At present, the drying of traditional water-containing powdery materials mostly adopts the existing rotary drum dryer. This kind of equipment not only consumes a lot of energy and occupies a large area, but also causes excessive dust emissions to pollute the environment. [0003] For the drying of pasty materials, drying equipment such as drum dryers, spin flash dryers, and hollow paddle dryers are mostly used at present. Drum dryers and spin flash dryers are easy to cause dust pollution due to the use...

AI Technical Summary

Problems solved by technology

[0004] For the drying of liquid materials, spray dryers are mostly used at present; however, due to the excessive drying energy consumption of spray dryers, the operating costs are high, especially in the environmental protection industry.

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