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Van type vacuum drying device for urban sludge

A vacuum drying device and sludge technology, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of poor drying effect, odor overflow, etc., and achieve good drying effect, small vaporization latent heat, and good social and economic benefits.

Active Publication Date: 2019-11-01
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0007] But above-mentioned technical scheme still exists the problem of stench overflowing, and drying effect is poor

Method used

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  • Van type vacuum drying device for urban sludge

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Embodiment Construction

[0033] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 As shown, a box-type vacuum drying device for urban sludge of the present invention includes a drying box 4, and the box body of the drying box 4 is an insulated box body. The drying box 4 is connected with a vacuum pump 10, and the vacuum pump 10 is used to control the vacuum degree in the drying box 4.

[0035] An air distribution plate 2 is arranged inside the drying box 4 to divide it into an upper material delivery area and a lower air supply area, and the air distribution plates 2 are evenly arranged with air distribution channels. There is a material conveying system in the material conveying area, and a finned heat exchanger 1 is installed in the air supply area. The gas entering the air supply area is heated by the finned heat exchanger 1 and then introduced through the air distribution channel ...

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Abstract

The present invention discloses a van type vacuum drying device for urban sludge. The device comprises: a drying box, wherein a vacuum pump is connected to the drying box; an air distribution plate isarranged inside the drying box to divide the drying box into an upper material conveying area and a lower air supply area, and air distribution channels are arranged in the air distribution plate; amaterial conveying system is arranged in the material conveying area, a heat exchanger is arranged in the air supply area, and gas entering the air supply area is heated through the heat exchanger andthen introduced into the material conveying area through the air distribution channels of the air distribution plate to heat and dry materials conveyed by the material conveying system, and a hot aircirculation system is also connected to the drying box. The device is applicable for drying the urban sludge, provides favorable material conveying conditions and pressure, temperature and wind powerconditions of a heat medium for sludge drying, improves sludge drying rate, does not overflow malodor in the drying process, and has good environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of sludge drying, in particular to a box-type vacuum drying device for urban sludge. Background technique [0002] Sludge is a high-moisture porous medium substance, and the moisture content of untreated sludge is as high as 95%. Especially urban sludge, because its combined moisture and free moisture are larger than ordinary dry matter, and its physical form is like a micelle, with strong cohesion, so it is not easy to dry, and it consumes a lot of energy, and it also emits foul smell and pollutes the environment. With the increasingly severe environmental protection requirements and the accelerated pace of urbanization, urban sludge treatment has become a problem that needs to be solved urgently. [0003] Traditional treatment methods and disposal systems generally dehydrate the sludge first, and the dehydrated sludge is usually treated by agricultural use, landfill or incineration. In these types of tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13
CPCC02F11/13
Inventor 苏钰杰关树义赵廷林
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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