A box-type vacuum drying device for urban sludge
A vacuum drying device and sludge technology, applied in the direction of dewatering/drying/concentrating sludge treatment, etc., can solve the problems of poor drying effect and odor overflow, and achieve the effect of good drying effect, small latent heat of vaporization and large specific surface area.
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[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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