Shaft furnace flue gas treatment method

CN120820002APending Publication Date: 2025-10-21GANZHOU JIANGWU NEW TYPE ALLOY MATERIAL
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Patent Information

Application Number
CN202511008189.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2025-10-21

AI Technical Summary

Technical Problem

In traditional vertical furnace flue gas treatment, incomplete combustion or improper temperature control results in the incomplete decomposition of harmful substances, which may cause secondary pollution.

Method used

By employing a secondary combustion mechanism, alkaline solution spraying, and rapid cooling, combined with the design of rotating plates and raised blocks, high-temperature fission and uniform dispersion of scrap copper raw materials are achieved. The smelting process is optimized through oxygen-enriched combustion and flexible atmosphere adjustment.

Benefits of technology

It effectively reduces VOC and acid gas emissions in flue gas, protects the environment, improves smelting efficiency and copper recovery rate, extends equipment life, and meets environmental emission standards.

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Abstract

The invention discloses a shaft furnace flue gas treatment method, and relates to the field of shaft furnace flue gas treatment, and the shaft furnace flue gas treatment method comprises the following steps: 1, feeding waste copper with the copper content of 92-98% into a smelting device for smelting, so that VOC (volatile organic compounds) in flue gas is fully fission; secondly, smoke exhausted after combustion of the smelting device is subjected to secondary combustion, and the smoke residence time is prolonged; the smelting device comprises a furnace body, one side of the top end of the furnace body is communicated with a secondary combustion mechanism, after the secondary combustion mechanism is additionally arranged, emission of harmful substances such as VOC and acid gas in the flue gas can be effectively reduced through a series of measures such as high-temperature fission, secondary combustion and alkaline solution neutralization, and the emission of harmful substances such as the VOC and the acid gas in the flue gas can be effectively reduced. The environment-friendly emission standard is achieved, pollution to the environment is reduced, harmful substances can be prevented from being resynthesized at high temperature in the rapid cooling process and alkaline solution spraying, the toxicity of the flue gas is further reduced, follow-up equipment is protected against corrosion, and the service life of the equipment is prolonged.
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