Reaction promoter for flue gas purification treatment

A reaction aid and flue gas purification technology, which is applied in other chemical processes, chemical instruments and methods, and dispersed particle filtration, can solve problems such as inconvenient use and poor purification effect of reaction aids, so as to achieve sufficient adsorption and ensure Working conditions, the effect of ease of use

Inactive Publication Date: 2008-06-18
GUANGDONG CHANT GRP
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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

Method used

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Embodiment Construction

[0009] A reaction additive for flue gas purification treatment, which is applied to the dry process—that is, in the waste incineration boiler flue gas purification treatment method of a quenching reaction tower + a high-efficiency bag dedusting reactor. It is sprayed into the bag filter together with slaked lime. The reaction on the membrane formed on the surface of the filter bag removes acid gas, and the reaction aid on the membrane effectively adsorbs dioxins and heavy metals, and the dust, reaction products, and adsorbates in the flue gas are discharged through the dust collector; it is made of refined diatoms The clay and activated clay are mixed in a certain proportion, wherein the diatomite accounts for 75-85% of the total weight, and the activated clay accounts for 15-25% of the total weight. After the diatomite is crushed, dried, and finely ground from the raw ore, after reaching the required purity, particle size, dryness and other requirements (can be ordered from th...

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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 activated clay 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 sufficient time 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 of the 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 utility model 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 Reaction to remove acid gas, and the reaction aid on the membrane effectively adsorbs dioxins and heavy metals, and the dust in the flue gas, reaction products, and 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 the success or failure of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D46/00B01D46/42B01J20/14
Inventor 何启强徐家麟谢世文
Owner GUANGDONG CHANT GRP
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