In-situ regeneration device and method for glass kiln SCR denitration catalyst

Abstract

The invention relates to an in-situ regeneration device for a glass kiln SCR denitration catalyst, which comprises a denitration reactor, wherein the denitration reactor is connected with a washing device, a hot air conveying device and a dosing device; the dosing device is connected with a waste liquid collection device; the washing device is connected with the dosing device to form a circulation circuit. The in-situ regeneration device can be used for achieving in-situ regeneration of the denitration catalyst, and is high in regeneration efficiency, and meanwhile capable of preventing pollution of a regeneration solution to the environment, reducing the waste of regeneration solution and reducing the regeneration cost.

Description

technical field [0001] The invention belongs to the technical field of in-situ regeneration of SCR denitration catalysts in glass furnaces, and in particular relates to an in-situ regeneration device and regeneration method for SCR denitration catalysts in glass furnaces, which are used to realize in-situ regeneration of denitration catalysts. Background technique [0002] While promoting economic development, my country's glass furnaces also produce a large amount of nitrogen oxides (NO x ). NO x It is a kind of air pollutant with great harm, which can cause environmental problems such as photochemical smog and acid rain, and also threatens human health at all times. To this end, my country's "Twelfth Five-Year Plan" comprehensively carried out NO x Emission reduction projects. Reduce NO x There are two ways of emission control and flue gas denitrification after combustion. In actual production, low NO x The efficiency of combustion technology is low, and flue gas de...

AI Technical Summary

Problems solved by technology

Denitrification catalysts are expensive in flue gas denitrification projects, occupy a large share of investment costs, and are consumables. For example, the average annual waste of catalysts for a 700MW unit is about 100m 3 , at the same time, the catalyst replaced due to the decrease of denitrification activity is due to the V 2 o 5 , heavy metals and other polluting substances are hazardous and must be recycled

Reversible poisoned catalysts and catalysts with reduced activity can be reused through regeneration. The cost of regeneration (regeneration) is only 20-30% of the total replacement cost, and the activity can be restored to more than 90% of the original. This method will cause disassembly and assembly. , replacement, cost increase and other issues

In addition, the current in-situ regeneration method of denitrification catalyst has poor regeneration effect and short catalytic cycle after regeneration.

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