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

Abstract

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. The adsorption material has a three-layer structure, and the three-layer structure is respectively a biomass graphene layer, a non-woven fabric layer and a mixed material layer. The biomass graphene is used to adsorb heavy metal substances. Compared with spherical adsorption materials, the increase in The adsorption area and adsorption space are increased, and the SO produced by sludge incineration can be simultaneously adsorbed. 2 , NO x Substances such as acid gases and heavy metals, biomass graphene, non-woven fabric layer and prepared mixed material layer can achieve the effect of synergistic treatment; the preparation method of the adsorption material of the present invention is easy to operate, and the source of raw materials used is easy to obtain and low cost low, the preparation process is simple, and the prepared adsorption material is degradable.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials used for environmental pollution control, and particularly relates to an adsorption material used for purifying sludge incineration flue gas and a preparation method thereof. Background technique [0002] Sludge is the terminal 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 dewatered-drying or incinerated. A method of disposal of sludge, sludge is composed of organic matter and inorganic matter, and is a complex substance with high moisture content. Although the incineration of sludge will convert the organic matter in the sludge into carbon dioxide, nitrogen oxides and water and other substances, It can recover heat energy and realize the resource utilization of sludge, but it will also generate flue gas during incineration, and the flue gas contains ...

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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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