Flue gas desulfurization system for sheet glass industry melting furnace

Abstract

The invention discloses a flue gas desulfurization system for a sheet glass industry melting furnace. The system comprises a sodium carbonate storage part, wherein the sodium carbonate storage part comprises a sodium carbonate storage bin, a sodium carbonate dissolving part, a sodium carbonate solution storage part, a sodium carbonate solution conveying part, a spraying desulfurization part and adust removal collecting part; sodium carbonate raw materials pass through the sodium carbonate storage part, the sodium carbonate dissolving part, the sodium carbonate solution storage part and the spraying desulfurization part; a sodium carbonate solution is sprayed to flue gas in a desulfurization tower for desulfurization, the desulfurized flue gas is discharged by a bag filter, and byproductsare collected through a byproduct storage bin. Desulfurization efficiency of the desulfurization system can reach 90% or higher, and emission standards are met.

Description

technical field [0001] The invention relates to the technical field of glass melting furnace flue gas treatment, in particular to a flat glass industrial melting furnace flue gas desulfurization system. Background technique [0002] The fuels used in the melting furnaces of the flat glass industry are mainly natural gas, producer gas, heavy oil, and petroleum coke. With the promulgation of relevant documents such as the National Air Pollution Prevention and Control Plan, it is clearly required to continue to implement energy structure adjustments and accelerate the promotion and use of clean energy. At the same time, the release of the "Emission Standards of Air Pollutants for the Flat Glass Industry" (GB 26453-2011) revision (draft for comments) tightens the special emission limits of air pollutants in special areas such as fragile ecological environments. Among them, Glass melting furnace particle limit 20mg / m 3 , sulfur dioxide limit 100mg / m 3 , Nitrogen oxide limit 4...

AI Technical Summary

Problems solved by technology

[0004] The mainstream desulfurization process in the glass industry is wet desulfurization process (limestone gypsum method, etc.) or semi-dry process (CFB, NID, SDA), and the investment of the above processes is relatively large; at the same time, the desulfurization agent of the above processes is lime (quick lime / slaked lime / calcium carbonate), after desulfurization, the by-products calcium sulfate and calcium sulfite are mostly exported to landfill, which produces a large amount of waste and occupies urban landfill land.

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