Reaction promoter for flue gas purification treatment

Abstract

The invention discloses a reaction promoter used for purifying flue gas, which is made by combining diatomite and activated clay, with diatomite accounting for 75-85% of the total weight and activatedclay accounting for 15-25% of the total weight. The invention can integrate with hydrated lime to form a membrane of certain thickness (a pre-spray reaction membrane) on the surface of a filter bag,so that hydrated lime and the flue gas can get enough time for colliding and contacting to promote sufficient reaction and adsorption of the harmful substances in the flue gas, which means the reaction and the adsorption occur on the filter bag surface, and which requires the reaction promoter to have such properties as porosity, low density and large specific surface area to ensure the sufficienttime and intensity for the reaction and the adsorption; the mighty adsorption to dioxin and heavy metals require the reaction promoter to have strong adsorbing ability to ensure the sufficient and effective absorption; strong permeability and easy stripping ensures the continuity and reliability of the adsorption; absorbing the moisture together with hydrated lime ensures the working condition ofthe filter bag so as to prolong the service life of the filter bag; the purifying effect is good and the preparation method is simple.

Description

【Technical field】 [0001] The invention relates to a reaction auxiliary agent for flue gas purification treatment. 【Background technique】 [0002] Waste incineration boiler flue gas purification treatment methods mainly include wet process, semi-dry process and dry process. Dry process—that is, quenching reaction tower + high-efficiency bag filter reactor, its process flow is: after the flue gas is cooled in the quench tower, it is sprayed into the bag filter together with slaked lime and reaction additives, and the film formed on the surface of the filter bag The reaction on the membrane removes the acid gas, and the reaction aid on the membrane effectively adsorbs dioxins and heavy metals, and the dust in the flue gas, the reaction products, and the adsorbed substances are discharged through the dust collector. Reaction additive is a special substance used in the above-mentioned dry process. It plays a key role in the dry process flue gas treatment system and determines th...

AI Technical Summary

Problems solved by technology

The existing reaction aids have poor purification effects and are inconvenient to use, which is a problem that technicians in the field of waste incineration boiler flue gas purification have been eager to solve