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Industrial flue gas dioxins precursor remover

A technology for dioxins and industrial flue gas, applied in gas treatment, membrane technology, other chemical processes, etc., can solve problems such as limited adsorption, high cost, fire, explosion, etc., achieve obvious removal effect, ideal effect, fast effect

Inactive Publication Date: 2018-09-07
SHENZHEN WINTOP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this special activated carbon uses phenolic resin to make activated carbon, the process is complicated and there are many materials; secondly, the adsorption of activated carbon is only to adsorb dioxins through adsorption, the adsorption effect is limited, and the removal effect of dioxins is limited by the activated carbon itself. The performance is limited, and the cost is high; again, when pure activated carbon is stored or used, the ignition point (ie flash point) of activated carbon is reduced due to its heat storage effect, and it is easy to cause fire, explosion and other dangers.

Method used

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  • Industrial flue gas dioxins precursor remover
  • Industrial flue gas dioxins precursor remover
  • Industrial flue gas dioxins precursor remover

Examples

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Effect test

Embodiment 1

[0027] At room temperature, soak powdered activated carbon with a particle diameter of 20 μm in an aqueous sodium silicate solution in which 4 parts of sodium silicate is dissolved in water, evaporate water while stirring, and dry the activated carbon after evaporating water.

[0028] According to parts by weight, 26 parts of activated carbon added with sodium silicate, 10 parts of powdered zeolite with a particle diameter of 20 μm, and 60 parts of powdered trona with a particle diameter of 20 μm can be uniformly mixed.

Embodiment 2

[0030] At normal temperature, according to the parts by weight, 10 parts of zeolite and 60 parts of trona are pulverized, and then 30 parts of activated carbon added with 4 parts of sodium silicate are added and mixed evenly.

Embodiment 3

[0032] At room temperature, soak powdered activated carbon with a particle size of 20 μm in an aqueous sodium silicate solution in which 2 parts of sodium silicate is dissolved in water, evaporate the water while stirring, and dry the activated carbon after evaporating the water.

[0033] According to parts by weight, 20 parts of activated carbon added with sodium silicate, 5 parts of powdered zeolite with a particle diameter of 20 μm, and 50 parts of powdered trona with a particle diameter of 20 μm can be uniformly mixed.

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Abstract

The invention discloses an industrial flue gas dioxins precursor remover. The industrial flue gas dioxins precursor remover is prepared from the following components through mixing: activated carbon,zeolite, natural alkali and sodium silicate. The activated carbon and the zeolite are used for adsorbing a dioxins precursor, and meanwhile, the natural alkali is used for improving the adsorptivity of the activated carbon and the zeolite, reducing the heat accumulation performance of the activated carbon and increasing the ignition temperature of the activated carbon; the sodium silicate is usedfor inhibiting a catalysis function of the activated carbon in dioxins generation reaction; the industrial flue gas dioxins precursor remover formed by utilizing the activated carbon, the zeolite, thenatural alkali and the sodium silicate is capable of quickly preventing dioxins from generating at the source at a high speed.

Description

technical field [0001] The invention relates to the technical field of industrial waste gas treatment, in particular to a removal agent for dioxin precursors in industrial flue gas. Background technique [0002] Dioxins generally refer to a group of polychlorinated substituted planar aromatic hydrocarbons with similar structures and physical and chemical properties, belonging to chlorinated oxygen-containing tricyclic aromatic hydrocarbons, including 75 polychlorinated dibenzo-one-to-one dioxins and 135 Polychlorinated dibenzofurans, abbreviated as PCDD / Fs. The most well-studied toxic dioxins are 17 homologue isomer monomers (congenor) substituted by chlorine atoms at the 2-, 3-, 7-, and 8-positions, among which 2,3,7,8-tetrachloro Dibenzo-p-dioxin (2,3,7,8-TCDD) is currently the most toxic dioxin monomer among all known compounds (oral LD ​​is only 1ug / kg by weight), Moreover, it also has a variety of toxic effects including extremely strong carcinogenicity (rat liver can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01J20/20B01J20/30
CPCB01D53/02B01D2257/2064B01J20/165B01J20/20
Inventor 廖颖生杨燕
Owner SHENZHEN WINTOP ENVIRONMENTAL TECH CO LTD
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