Glass kiln gas denitration spray ammonia injection grid online ash removing device and ash removing method thereof

Abstract

The invention discloses a glass kiln gas denitration spray ammonia injection grid online ash removing device. The device comprises an ammonia injection grid for injecting ammonia; a hopper device arranged under the ammonia injection grid and communicated with the ammonia injection grid, wherein the hopper device is provided with a vibrating device; a circulation passage used for achieving gas communication cycle, wherein the circulation passage is respectively communicated with the ammonia injection grid and the hopper device through control valves and form the gas and flue ash inner cycle inthe pressure maintaining state. A method for online ash removing by using the glass kiln gas denitration spray ammonia injection grid online ash removing device is also disclosed. The device ensures the stability of the kiln pressure due to achievement of the gas inner cycle in the environmental protection operation, achieves the effective ash removing of the online ammonia injection grid, and avoids the risk of flue ash accumulation, achieves long-term stable operation of the overall environmental protection system and greatly reduces production and maintenance costs.

Description

technical field [0001] The invention relates to the technical field of denitrification process of float glass environmental protection system, and more specifically relates to an online ash removal device and a method for denitrification of flue gas in a glass kiln and an ammonia injection grid. Background technique [0002] At present, the denitrification process of the float glass environmental protection system adopts the selective catalytic reduction method (SCR). This reaction occurs in a reactor equipped with a catalyst. removal. During long-term use, the flue ash brought by the flue gas of the melting furnace gradually accumulates in the flue, which is likely to cause coverage of the ammonia injection grille; during routine maintenance, it was found that the ash accumulation at the ammonia injection grille of the second line exceeded the flue 70% of the cross-section, the ammonia injection grid is completely buried by ash, resulting in high system resistance and poor...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that during the long-term use of the existing float glass environmental protection system denitrification process, these flue ash cannot be manually cleaned, and the flue ash brought by the flue gas of the melting furnace gradually accumulates in the flue, which is easy to cause damage to the flue. Covering the ammonia spraying grid; the ammonia spraying grid is buried by ash accumulation, which leads to the problem of high resistance of the environmental protection system and poor ammonia spraying effect, and provides an online ash cleaning device for glass kiln flue gas denitrification ammonia spraying grid and Its cleaning method, in the environmental protection operation, under the condition of ensuring the stability of the kiln pressure, realizes the online ammonia spray grid dust cleaning, avoids the risk of dust accumulation in the flue, and realizes the long-term stable operation of the overall environmental protection system

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