Integrated device for bag dust removal, catalytic denitrification and dedioxin removal

Abstract

The invention discloses an integrated device of bag-type dust removal, catalytic denitration and dioxin removal. The bag cage mounted in a filter bag of a bag-type dust collector is a catalytic bag cage, the catalytic bag cage takes a metal wire mesh bag cage as a matrix and loads a catalyst, and the metal wire mesh contains metal fibers. The preparation process of the catalytic bag cage includesthe following steps: digging the metal wire mesh bag cage in an adhesive for sizing; lifting the metal wire mesh bag cage and placing the metal wire mesh bag cage in a closed box body; spraying catalyst powder into the box body; depositing the powder on the surfaces of metal fibers under the action of the adhesive to hang powder; and finally conveying the powder-hung bag cage to a heating furnace.Under the action of high temperature, the adhesive is volatilized and burned, catalyst particles are sintered and adhered to the surface of the metal wire mesh to realize catalyst loading. Accordingto the invention, flue gas bag-type dust removal and catalytic denitration or dioxin removal are organically combined to realize synergistic purification of flue gas dust removal denitration or dioxinremoval, so that the inner space of the dust remover is effectively utilized, the number of equipment is decreased, occupied land is saved, and engineering investment and operation cost are reduced.

Description

technical field [0001] The invention relates to the field of environmental protection technology, in particular to an integrated device for bag-type dedusting, catalytic denitrification and dioxin removal for synergistic removal of particulate matter and nitrogen oxides or particulate matter and dioxins in industrial flue gas. Background technique [0002] Industrial flue gas often contains particulate matter (PM) and nitrogen oxides (NO x ), and in some special industries, the flue gas also contains dioxins. According to environmental protection requirements, the particulate matter, nitrogen oxides, dioxins and other toxic and harmful substances in the flue gas should be purified and discharged up to the standard. [0003] Taking the removal of nitrogen oxides as an example, the common flue gas purification technology scheme in the project is to first use the selective catalytic reduction (SCR) device to denitrify, and then use the bag filter to remove the particulate matte...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of existing flue gas dedusting and denitrification or dioxin removal process equipments, large area, high investment and lack of synergistic effect, especially the problems of difficulty in loading catalyst on filter material, unstable effect and high cost The problem is to provide an integrated device for bag dust removal, catalytic denitrification, and dioxin removal to achieve a synergistic effect of dust removal, denitrification, or dioxin removal

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