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A kind of ozone catalytic oxidation catalyst and preparation method thereof

An ozone catalytic oxidation and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem that catalyst performance is not stable enough, surface properties are easy to change, repeated Low utilization rate and other problems, to achieve the effect of improving moisture resistance, low cost, and improving adsorption effect

Active Publication Date: 2021-07-23
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the catalysts prepared by the prior art have the characteristics of unstable performance, low efficiency, short service life, easy change of surface properties, and low reutilization rate, resulting in waste of catalysts and increased costs.

Method used

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  • A kind of ozone catalytic oxidation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1: the preparation of carrier

[0063] A carrier preparation

[0064] Activated carbon A (specific surface area 3000m 2 / g, pore diameter 0.5nm) pulverization, pulverization fineness is 50 orders; Activated carbon powder 15g after pulverization and incinerator deposit ash A (specific surface area 400m 2 / g, pore size 3nm) 15g and mix evenly; add citric acid 9g and 3g water to the mixed powder and mix evenly, then knead for 1min; after kneading, extrude into strips with a diameter of 2mm and a length of 5mm; then dry at 100°C for 3h, Calcined at 500°C for 2 hours to obtain the finished product.

[0065] Preparation of B carrier

[0066] Activated carbon A (specific surface area 3000m 2 / g, pore diameter 0.5nm) pulverization, pulverization fineness is 50 orders; The activated carbon powder 15g after pulverization and incinerator deposit ash B (specific surface area 250m 2 / g, pore size 5nm) 15g and mix evenly; add 9g of citric acid and 3g water to the mixe...

Embodiment 2

[0082] Embodiment 2: the preparation of 0# catalyst

[0083] Take 200g of carrier A and put it into a beaker. At the same time, take 40.0mL of magnesium nitrate aqueous solution containing 0.10g / mL magnesium, 40.0mL of nickel nitrate aqueous solution containing 0.15g / mL of nickel, and 40.0mL of manganese nitrate aqueous solution containing 0.10g / mL of manganese. Add 40.0mL of zirconium nitrate aqueous solution containing 0.1g / mL zirconium and 40.0mL of ferric nitrate aqueous solution containing 0.10g / mL iron to the ethanol aqueous solution with ethanol concentration of 5wt%, and prepare an impregnation solution with a total volume of 500.0mL. Mix the impregnating liquid and the carrier in a beaker evenly, keep the temperature at 60°C for 5 hours, filter the impregnating liquid, put the carrier adsorbed with the impregnating liquid in an oven at 180°C for 2 hours; then take out the catalyst, cool to 100°C, and then Calcined at 450°C for 5h in a muffle furnace to obtain 0# catal...

Embodiment 3

[0085] Embodiment 3: the preparation of 1# catalyst

[0086] Take 200 g of the F carrier and put it into a beaker. At the same time, take 40.0 mL of an aqueous solution of magnesium nitrate containing 0.10 g / mL of magnesium, 40.0 mL of an aqueous solution of nickel nitrate containing 0.15 g / mL of nickel, and 40.0 mL of an aqueous solution of manganese nitrate containing 0.10 g / mL of manganese. Add 40.0mL of zirconium nitrate aqueous solution containing 0.1g / mL zirconium and 40.0mL of ferric nitrate aqueous solution containing 0.10g / mL iron to the ethanol aqueous solution with ethanol concentration of 5wt%, and prepare an impregnation solution with a total volume of 500.0mL. Mix the impregnating liquid and the carrier in a beaker evenly, keep the temperature at 60°C for 5 hours, filter the impregnating liquid, put the carrier adsorbed with the impregnating liquid in an oven at 180°C for 2 hours; then take out the catalyst, cool to 100°C, and then Calcined at 450° C. for 5 h in ...

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Abstract

The invention discloses an ozone catalytic oxidation catalyst and a preparation method thereof. The carrier of the catalyst is a mixture of waste activated carbon and incinerator dust, preferably through chemical surface modification and / or plasma treatment. Loaded with active metal components, it is used to treat biochemical waste gas. The catalyst has good adsorption and catalysis effect on harmful substances in the exhaust gas, can be treated until odorless emission, and will not cause pollution.

Description

technical field [0001] The invention relates to the technical field of ozone treatment, in particular to an ozone catalytic oxidation catalyst and a preparation method thereof. [0002] technical background [0003] Biological treatment of wastewater is one of the main means of wastewater treatment at present, but the stench produced during the current biological treatment process seriously endangers human health and the environment. The biochemical waste gas mainly comes from the volatilization of wastewater, and the main components of biochemical waste gas are alkanes. , benzene series, ammonia, hydrogen sulfide and other substances, and the biochemical waste gas has the characteristics of large gas volume, low concentration, strong seasonal influence, low smell threshold and strong irritation, which has great harm to the ecological environment and human health. [0004] Common treatment methods for biochemical waste gas include incineration, absorption, adsorption, and bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J35/10B01D53/72B01D53/58B01D53/52B01D53/86B01D53/44
CPCB01D53/8612B01D53/8634B01D53/8668B01D53/8687B01J23/002B01J23/8892B01J2523/00B01J35/615B01J35/647B01J2523/22B01J2523/48B01J2523/72B01J2523/842B01J2523/847
Inventor 张金强高学顺姜晓锋荆开石常林张宏科华卫琦
Owner WANHUA CHEM GRP CO LTD
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