Movable type denitration catalyst cleaning device

Abstract

The invention relates to a movable type denitration catalyst cleaning device, composed of a cleaning tank and a rinsing tank. The invention has the advantages that: catalyst (especially denitration catalyst) is cleaned, soluble pollutants such as catalyst hole tamper, alkalis and alkaline earth are effectively removed, catalytic activity of catalyst is recovered, catalytic efficiency of catalyst is improved, and service life of catalyst is prolonged; the catalyst lifting appliances which are arranged in an ultrasonic cleaning tank and the rinsing tank are dismountable, thus being beneficial to suspension cleaning and rinsing of catalyst module; an overflow slot is arranged in the ultrasonic cleaning tank and the rinsing tank, so as to realize automatic outflow of dirt foam produced in thecleaning process, thus avoiding manual cleaning and improving cleaning efficiency; a compressed air bubbling device is arranged in the rinsing tank, thus being beneficial to clearing dirt remained after the catalyst module is cleaned; and the ultrasonic cleaning tank and the rinsing tank can be transported by utilizing vehicles such as a car and a ship, thus being beneficial to in-place cleaning of catalyst.

Description

technical field [0001] The invention relates to a cleaning device, in particular to a movable denitration catalyst cleaning device. Background technique [0002] Nitrogen oxides are one of the main pollutants in the atmosphere. At present, the NOx emitted by my country's industry, power and transportation industries x Accounting for more than 90% of the total emissions, the NO produced by burning coal, fuel oil and biomass fuel x is the main source. Treating the flue gas generated after fuel combustion in a suitable way is to control NO x One of the most effective ways to discharge, the flue gas denitrification treatment methods that are widely used in the world are selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR). For coal-fired (oil-fired) power plant boilers , Selective Catalytic Reduction (SCR) is the most widely used. [0003] Selective Catalytic Reduction (SCR) uses ammonia (NH 3 ) as a reducing agent, "selectively" with the NO in t...

AI Technical Summary

Problems solved by technology

The main reasons for the decline in catalytic efficiency and early failure of SCR catalysts are: particulates such as fly ash in the flue gas block the pores of the catalyst, alkali metal substances in the fly ash (mainly K + 、Na + and their compounds) alkaline earth metal substances (mainly Ca 2+ , Mg 2+ and its compounds) combine with the active components of the catalyst to make the catalyst poisoned and ineffective

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