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Method for drying powdery material by using vertical dryer

A technology for vertical dryers and powdery materials, which is applied in the directions of drying solid materials, heating to dry solid materials, drying, etc., which can solve the problems that powdery materials cannot be dried, extend the contact time, and ensure normal operation Effect

Active Publication Date: 2012-12-26
ZHEJIANG DEYAO ENERGY SAVING TECH CO LTD
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for drying powdery materials using a vertical dryer to solve the problem that the vertical dryer in the prior art cannot be used for drying powdery materials

Method used

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  • Method for drying powdery material by using vertical dryer

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Embodiment Construction

[0011] The used vertical dryer of the present invention has been partially improved on the basis of the existing vertical dryer, such as figure 1 As shown, it mainly includes a vertically arranged hollow cylinder 1, a feed inlet 2 is arranged on the top of the hollow cylinder, and a plurality of retaining rings 3 are arranged axially inside the hollow cylinder 1, so that the hollow Two concentric cavities, inner and outer, are formed in the cylinder body 1, and a space is left between two adjacent retaining rings 3 to form a hot air outlet. The lower part of the hollow cylinder body 1 is provided with an air inlet 4 for connecting a heat source. The air inlet 4 is directly communicated with the inner cavity surrounded by the material retaining rings 3 , so that hot air is directly sent into the cavity surrounded by the material retaining rings 3 and blown out from the space between the material retaining rings 3 . The cylinder wall of the hollow cylinder 1 is a sandwich struct...

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Abstract

The invention discloses a method for drying a powdery material by using a vertical dryer. The method comprises the following steps of: stirring and mixing a powdery wet material and solid drying medium particles and simultaneously conveying into a vertical drying furnace to dry; and sieving dried mixture to obtain the dried powdery material. In the method, the powdery wet material and the solid dry medium particles are mixed and then conveyed into the dryer to be dried, and the powdery wet material is obstructed by using the characteristic that the solid drying medium particles fall at a low speed in a barrel of the dryer, so the falling speed of the powdery wet material is reduced, the time of contacting the powdery wet material with hot air is prolonged as much as possible, and sufficient drying time of the powdery wet material is guaranteed; therefore, the problem that the vertical drying furnace cannot be applied to drying the powdery wet material in the prior art is solved.

Description

technical field [0001] The invention relates to a method for drying powdery materials, in particular to a method for drying powdery materials using a vertical dryer. Background technique [0002] A large amount of dust will be generated in thermal power generation or cement production. If the dust is directly discharged into the atmosphere without recycling, it will cause great pollution to the surrounding environment. Due to the high temperature of the dust generated in thermal power generation or cement production, it is necessary to spray water and humidify during the collection process, so that the dust contains water and cools down to form a wet material before recycling, and after recycling, it is dried by a dryer. Due to the small diameter and light weight of dust particles, ordinary dryers cannot be used for dust drying. At present, the dryer used for dust drying adopts a drum structure, and the dust is sent into hot steam for drying while rolling in the drum. Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B3/02
Inventor 唐德顺
Owner ZHEJIANG DEYAO ENERGY SAVING TECH CO LTD
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