Adsorbing material for purifying sludge incineration flue gas and preparation method thereof

Abstract

The invention belongs to the technical field of adsorbing materials for environmental pollution control, and particularly relates to an adsorbing material for purifying sludge incineration flue gas and a preparation method of the adsorbing material. The adsorbing material has a three-layer structure, wherein the three layers of structures are respectively a biomass graphene layer, a non-woven fabric layer and a mixed material layer; the biomass graphene is used for adsorbing heavy metal substances. In comparison with a spherical adsorbing material, the adsorbing area and the adsorbing space are increased, acidic gases such as SO2 and NOx generated by sludge incineration and substances such as heavy metals can be adsorbed at the same time, and the biomass graphene, the non-woven fabric layer and the prepared mixed material layer can achieve a synergistic treatment effect; the preparation method of the adsorbing material is easy to operate, the used raw materials are easy to obtain and low in cost, the preparation process is simple, and the prepared adsorbing material has degradability.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials used for environmental pollution control, and in particular relates to an adsorption material used for purifying sludge incineration flue gas and a preparation method thereof. Background technique [0002] Sludge is the end product of domestic sewage treatment plants and industrial sewage treatment plants. In order to reduce the occupation of sludge and reduce environmental pollution, sludge is usually dehydrated, dried or incinerated. Sludge incineration is a waste A disposal method of mud. Sludge is composed of organic matter and inorganic matter. It is a complex substance with a high water content. Although incineration of sludge will convert the organic matter in the sludge into carbon dioxide, nitrogen oxides, and water. It can recover heat energy and realize the resource utilization of sludge, but it will also produce flue gas during incineration, and the flue gas contains a lot...

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Problems solved by technology

[0004] In the prior art, the treatment of acid gas, heavy metals and other pollutants in the flue gas mostly adopts the integrated technology of equipment combined with adsorption materials. Although it can achieve the effect of synergistic removal, the removal efficiency is not ideal, and the technical requirements High, the required equipment and material costs are also relatively high, and there are also targeted treatments for carbon-, nitrogen-, and sulfur-containing gases or heavy metals produced by sludge incineration purely by adsorption materials, which will cause secondary pollution caused by incineration. It can be treated well, and most of the adsorption materials are made of organic solvents, which cannot be completely degraded after use, and may cause environmental pollution again

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