Steam drying system for sludge

A drying system and steam technology, applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of increasing mechanical failure rate, high sludge viscosity, and reducing drying rate, etc., to improve heat exchange efficiency, uniform drying effect, Effect of improving drying efficiency

CN109592875AInactive Publication Date: 2019-04-09阴赵丹
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-04-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a steam drying system for sludge. The system comprises a first conveying device, a drying box and a control system. The drying box comprises a primary drying box and a secondary drying box, the feeding end of the primary drying box is connected to the discharge end of the first conveying device, the feeding end of the secondary drying box is connected to the discharge end of the primary drying box, a plurality of vibrating screens are arranged in the primary drying box, adjacent screens are connected through an elastic plastic, a stirring and crushing device is arrangedon each vibrating screen, the stirring and crushing device comprises a rotary shaft, a blade and a first driving motor, the rotary shaft penetrates through the center position of the vibrating screen, the blade is arranged on the rotary shaft, the first driving motor is arranged above the vibrating screen for driving the rotary shaft to rotate, and the vibrating screens are arranged up and down in a laminated manner, so that sludge in the upper vibrating screens is conveyed to the lower vibrating screens. The system is suitable for drying sludge, the water content of which is relatively low and has the characteristics of preventing sludge adhesion, being high in drying rate and the like.
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Description

technical field

[0001] The invention belongs to the technical field of sludge drying. More specifically, the present invention relates to a sludge steam drying system. Background technique

[0002] Sludge is rich in organic matter and mineral elements, therefore, sludge can be used as an excellent soil conditioner for soil. The resource utilization of sludge is in line with sustainable development, and the agricultural use of sludge is considered to be the most promising sludge treatment method. However, the high water content of fresh sludge makes it difficult to transport and use, or requires mechanical equipment to support field operations due to the difficulty in dispersing the dewatered cake, resulting in more difficulties in the practical application of sludge. The viscosity of the sludge is relatively high, which tends to block the vibrating screen cylinder during the drying process, increasing the mechanical failure rate and reducing the drying rate. Contents of ...

Examples

Embodiment

[0024] Such as figure 1 Shown, a kind of sludge steam drying system, it comprises:

[0025] the first means of transport;

[0026] A drying box, which includes a primary drying box and a secondary drying box, the feed end of the primary drying box is connected to the discharge end of the first transportation device, and the feeding end of the secondary drying box is connected to the The discharge end of the first-level drying box is connected, and several layers of vibrating screen drums 5 are arranged in the first-level drying box, and elastic plastic 3 is used to connect between adjacent two layers of screens, and each layer of vibrating screen drums 5 is provided with There is a crushing device, and the crushing device includes a rotating shaft 2, a blade 4 and a first drive motor 1, the rotating shaft passes through the center of the vibrating screen cylinder 5, the blade is arranged on the rotating shaft, and the first The driving motor is arranged on the top of the vib...