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Honeycombed catalyst for low-temperature synergic denitrification, dioxin removal and mercury removal and preparation method thereof

A honeycomb catalyst and dioxin removal technology, applied in chemical instruments and methods, heterogeneous catalyst chemical elements, physical/chemical process catalysts, etc., can solve the problems of high cost and expensive catalyst, and achieve low cost, The effect of strong promotion and application value and strong immunity

Active Publication Date: 2018-04-24
JIANGSU LONGKING COALOGIX CATALYST REGENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reactors for denitrification, dioxin removal and mercury removal are all independent, and three catalysts for denitrification, dioxin removal and mercury removal are required, and the catalysts are expensive and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Ball milling active components: 3 mass parts of active components CuO, MnO 2 4 parts by mass, V 2 o 5 Put 1 part by mass into a ball mill for ball milling for 1 hour, then add 1 part by mass of rare earth metal oxide as an active agent and continue ball milling for 4 hours until the particle size d90=13.48 μm;

[0029] 2) Preparation of mixed mud: 9 parts by mass of active components obtained in step 1), 60 parts by mass of metatitanic acid, 231 parts by mass of sulfated palygorskite, 0.2 parts by mass of soybean oil, 0.1 parts by mass of guar gum, polycrystalline 2 parts by mass of mullite fiber and 38 parts by mass of deionized water were put into the mixer and mixed at 600 rad / min for 60 minutes to prepare the mixed mud, and the moisture content of the mud was controlled at 29.8%;

[0030] 3) Preparation of honeycomb wet embryo: Put the mud obtained in step 2) into a mud refining machine with a vacuum degree of less than -0.095MPa and refine it for 3 times; in...

Embodiment 2

[0034] 1) Ball milling active components: 5 mass parts of active components CuO, MnO 2 10 parts by mass, V 2 o 5 Put 5 parts by mass into a ball mill for ball milling for 2 hours, then add the coagent CeO 2 4 parts by mass continued ball milling for 6 hours until the particle size d90=12.82 μm;

[0035] 2) Preparation of mixed mud: 24 parts by mass of active components obtained in step 1), 50 parts by mass of metatitanic acid, 26 parts by mass of sulfated palygorskite, 0.4 parts by mass of soybean oil, 0.5 parts by mass of guar gum, polycrystalline Put 4 parts by mass of mullite fiber and 45 parts by mass of deionized water into a mixer and mix for 30 minutes at 800 rad / min to make a mixed mud, and the moisture content of the mud is controlled at 30.7%;

[0036] 3) Preparation of honeycomb wet embryo: put the mud obtained in step 2) into a mud refining machine with a vacuum degree of less than -0.095MPa and refine it 3 times; in order to ensure that the mud is evenly moi...

Embodiment 3

[0040] 1) Ball milling active components: 4 mass parts of active components CuO, MnO 2 7 parts by mass, V 2 o 5 Put 3 parts by mass into a ball mill for ball milling for 3 hours, then add active auxiliary agent Y 2 o 3 4 parts by mass continued ball milling for 3 hours until the particle size d90=13.48 μm;

[0041] 2) Preparation of mixed mud: 17 parts by mass of active components obtained in step 1), 55 parts by mass of metatitanic acid, 28 parts by mass of sulfated palygorskite, 0.2 parts by mass of soybean oil, 0.1 parts by mass of guar gum, polycrystalline 2 parts by mass of mullite fiber and 40 parts by mass of deionized water were put into the mixer and mixed at 600 rad / min for 60 minutes to prepare the mixed mud, and the moisture content of the mud was controlled at 29.8%;

[0042] 3) Preparation of honeycomb wet embryo: put the mud obtained in step 2) into a mud refining machine with a vacuum degree of less than -0.095MPa and refine it twice; in order to ensure ...

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PUM

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Abstract

The invention discloses a honeycombed catalyst for low-temperature synergic denitrification, dioxin removal and mercury removal and a preparation method thereof. The honeycombed catalyst employs metatitanic acid and sulfated palygorskite as carriers, copper oxides, manganese oxides and vanadium oxides as active ingredients and rare-earth metal oxides as active aids. The honeycombed catalyst hereincan provide synergic denitrification, dioxin removal and mercury removal at the low temperature of 80-300 DEG C; under the action of the honeycombed catalyst, NOx and dioxin are selectively catalytically reduced into N2, HCl, CO2 and CO; the produced HCl is suitable for serving as a mercury removal aid; elemental mercury, CO, hydrocarbons and alkenes are thoroughly oxidized into mercury oxide andCO2; the honeycombed catalyst has denitrification rate of 95% and above and dioxin removal rate and mercury removal rate of 90% and above.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a low-temperature synergistic denitrification, dioxin and mercury removal honeycomb catalyst and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the regional air pollution problems characterized by NOx, dioxin and elemental mercury in my country have become increasingly prominent. Nitrogen oxides are an important cause of smog, which can cause acid rain and photochemical smog. Dioxins are carcinogens, and exposure to dioxins can cause serious reproductive and developmental problems, affect the immune system and disrupt the regulation of hormone levels. Elemental mercury vapor has a high degree of diffusivity and high fat solubility. It enters the alveoli through the respiratory tract and is transported to the whole body through the blood circulation. After the metallic mercury in the blood enters the b...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/04B01D53/86B01D53/56B01D53/70B01D53/64
CPCB01D53/8628B01D53/8662B01D53/8665B01J23/002B01J23/8892B01D2258/0283B01J2523/00B01J35/56B01J2523/17B01J2523/3706B01J2523/47B01J2523/55B01J2523/72B01J2523/3712B01J2523/36B01J2523/3725
Inventor 张涛唐晓玉丁丽娟何伟
Owner JIANGSU LONGKING COALOGIX CATALYST REGENERATION CO LTD
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