System for urban sludge flue gas drying middle-temperature pyrolysis carbonization

Abstract

The invention relates to a system for urban sludge flue gas drying middle-temperature pyrolysis carboization. The system comprises a hot air device and a feed storage metering device, a low-temperature flue gas drying device, a bag-type dust remover, a middle-temperature pyrolysis carboization device, a flue gas waste heat recovery device and a tail gas purification and deodorization device which are connected in sequence, and the hot air device supplies hot air to the low-temperature flue gas drying device and the middle-temperature pyrolysis carboization device. According to the system for urban sludge flue gas drying middle-temperature pyrolysis carboization, by means of optimal combination of the system and energy gradient utilization, the energy consumption of the system is reduced, and the thermal efficiency is effectively improved; by means of middle-temperature pyrolysis, the problem that coking and blocking are caused by local overheating of the sludge is solved, and the reliability of the system is improved. The system adopts a low-temperature flue gas drying technology and serves as front section sludge drying core equipment, the atomizing drying efficiency is high, and the time is short; a principle of combining the drying section with a spouted bed and a fluidized bed can effectively control the particle size of dried discharging materials to be 2-4 mm, and the subsequent carbonization efficiency is effectively improved.

Description

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AI Technical Summary

Benefits of technology

This patented system helps reduce greenhouse emissions from municipal solid wastes (MSW). It uses advanced technologies like microwave plasma torch to efficiently break down organic materials into smaller particles that are then collected at different locations within an incinerator without burning them further. By combining these techniques together, this system provides more efficient use of resources while reducing environmental impact.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the thermal efficacy of slurry processing systems during their production processes while minimizing environmental impact caused by these materials. Specifically, there exist challenges related to efficient recirculating fluid purification of sluice produced along our borders: (1) Limited space availability; (2) Thermodynamic effects associated with long periods of time between collection points and disposers' locations without proper management measures, leading to potential negative public relations issues like contamination of areas near populated centres where residents live. Additionally, existing methods require expensive capital investments and operate over longer hours, making them less practice compared to developing new facilities.

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