Sludge low-temperature oxidation treatment system and method thereof

By using a sludge-biomass-quartz sand mixing structure and a vertical three-section furnace design, combined with an automatic control unit, low-temperature oxidation of sludge with high water content is achieved. This solves the risks of caking and dioxin formation in sludge treatment, reduces energy consumption, and ensures the stability and safety of the system, making it suitable for the industrial treatment of municipal sludge.

CN121990745BActive Publication Date: 2026-07-07XIANGSHAN DMAN MASCH CO LTD
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Patent Information

Application Number
CN202610457961.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-04-09
Publication Date
2026-07-07
Estimated Expiration
2046-04-09

AI Technical Summary

Technical Problem

Existing low-temperature oxidation technology has drawbacks when treating municipal sludge with high water content, including low calorific value, easy caking, poor air permeability, inaccurate temperature control, and the risk of dioxin formation, making it difficult to achieve continuous and stable industrial operation.

Method used

It adopts a sludge-biomass-quartz sand mixed structure, combined with a vertical three-section furnace body and a bottom uniform air distribution design. The temperature is precisely controlled within the range of 420℃-480℃ by an automatic control unit. It integrates waste heat recovery and high-efficiency flue gas purification devices to achieve a fully enclosed continuous processing process.

Benefits of technology

It solves the problem of sludge caking, reduces energy consumption, reduces the risk of dioxin formation, and achieves stable, efficient and safe operation of the system, making it suitable for large-scale industrial harmless treatment of municipal sludge.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a sludge low-temperature oxidation treatment system and method thereof, and the system comprises a pretreatment unit, a feeding lifting mechanism, a low-temperature oxidation furnace, a flue gas purification unit and an automatic control unit. The low-temperature oxidation furnace is divided into a feeding area, a low-temperature oxidation area and a wind distribution and slag discharge area from top to bottom, the wind distribution plate is provided with a uniform array of air outlets, the temperature of the low-temperature oxidation area is controlled in the range from 420 DEG C to 480 DEG C, and the generation of dioxin is inhibited from the source. The pretreatment unit mixes the sludge, biomass and quartz sand to form loose and breathable materials, so that the sludge is prevented from being hardened. The method comprises material mixing, continuous feeding oxidation, temperature closed-loop regulation and control, flue gas purification and ash and slag treatment. The application can stably treat municipal sludge with high water content, has low energy consumption and low dioxin generation, flue gas emission meets the standard, ash and slag can be recycled, and is suitable for large-scale harmless disposal of municipal sludge.
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Citation Information

Patent Citations

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