Double drying process sludge treatment apparatus

Abstract

The invention belongs to the technical field of sludge treatment, and relates to a double-dry sludge treatment device. A plate and frame filter press drier is provided with several independent filter press drying units. The filter press drying unit includes a heating plate, and the two sides of the heating plate A tympanic plate is provided, filter cloths are provided on both sides of the tympanic plate, and several protrusions are provided on the side of the tympanic plate close to the filter cloth to support the filter cloth. The cavity between the heating plate and the heating plate is a drying chamber; the stirring tank is connected with the sludge chamber of the filter press drying unit one by one through branch pipes, and feeds in parallel. There is a screw conveyor under the filter press drying unit, the screw conveyor is connected to the inlet of the retort furnace, and the retort furnace is respectively connected to the gas storage tank and the biochar storage bin; the gap between the tympanum plate and the filter cloth is connected to the steam collection pipe , the steam collection pipe is connected to the steam compressor, the output of the steam compressor is connected to the inlet of the heating plate, and the bottom of the heating plate is provided with a condensed water outlet; the secondary steam compression is used to reduce the boiling point, and the resource utilization rate is high, occupying an area The area is small.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a double-dry sludge treatment device capable of feeding materials in parallel in separate chambers and making full use of the latent heat of secondary steam. Background technique [0002] Traditional sludge treatment methods include landfill, composting, dry incineration, etc. We call it "buried heap burning". [0003] Sludge wastes a lot of land in the landfill process, which will block the leachate collection pipes during the operation and paralyze the system; in addition, the viscous sludge will form a swamp in the landfill, and the operating machinery cannot work normally; The fluidity and instability of the mud are prone to pile collapse accidents. The stench problem of composting plants has a huge impact on the surrounding environment, and even causes disasters in the surrounding environment; it is difficult to find suitable sites for composting; the ...

AI Technical Summary

Problems solved by technology

Cement kilns still face long transportation distances and high transportation costs for sludge treatment, resulting in high operating costs (nearly 250 yuan / ton)

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