Steam drying system for sludge

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.

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 ...

AI Technical Summary

Problems solved by technology

However, the water content of fresh sludge is high, it is difficult to transport and use, or due to the difficulty in dispersing the dewatered cake, it is necessary to use mechanical equipment to support field operations, resulting in more difficulties in the actual 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

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