Ozone oxidation catalyst as well as preparation method and application thereof

An ozone 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 of increasing economic pressure, high price, low catalytic performance of catalysts, etc. problem, to achieve the effect of improving utilization efficiency and reducing concentration

Active Publication Date: 2018-06-01
KOOVINE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many scientific researchers choose cheap raw materials such as: Fe 2 o 3 , MnO 2 Wait to produce 1-9mm spherical catalysts, but the catalytic performance of catalysts is often low, which cannot meet the requirements of reducing costs and ensuring catalyst performance at the same time
And CuO, CeO 2 , etc. are relatively expensive, which not only increases the economic pressure on production, but also restricts the promotion of ozone catalytic oxidation technology in the field of sewage treatment

Method used

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  • Ozone oxidation catalyst as well as preparation method and application thereof
  • Ozone oxidation catalyst as well as preparation method and application thereof
  • Ozone oxidation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix 325-mesh rho-type alumina and zinc oxide to obtain a mixture, wherein the mixture contains 4-10% by mass of zinc oxide. Spherical molding is performed using a spheronizer. Select a round disc of 1-3m, continuously add the mixture into the opened round disc at a feeding rate of 100kg / h, and at the same time spray water into the round disc at a rate of 50kg / L, until a small disc with a diameter of about 1-9mm is obtained. When the ball is made, take it out for use to obtain the required material ball.

[0034] (2) The collected pellets were placed in a closed system and treated at a constant temperature of 90° C. for 24 hours.

[0035] (3) Add the pellets treated in step (2) continuously into the vertical kiln, and adjust the pellets to stay in the kiln at a constant temperature of 450° C. for 3 hours by controlling the discharge speed at the bottom of the furnace to obtain an ozone oxidation catalyst.

[0036] figure 1 , 2 , 5, and 6 are energy dispersive X-r...

Embodiment 2

[0040] (1) Mix 200-mesh rho-type alumina and zinc oxide to obtain a mixture, wherein the mixture contains 4-10% by mass of zinc oxide. Spherical molding is performed using a spheronizer. Select a round disc of 1-3m, continuously add the mixture to the opened round disc at a feeding rate of 100kg / h, and at the same time spray water into the round disc at a rate of 50kg / L and then spray an appropriate amount of water until the diameter is When the ball is about 6-9mm, take it out for use to obtain the required material ball.

[0041] (2) The collected pellets were placed in a closed system and treated at a constant temperature of 60° C. for 24 hours.

[0042] (3) Add the pellets processed in step (2) continuously into the vertical kiln, and adjust the pellets to stay in the kiln constant temperature zone of 500° C. for 3 hours by controlling the discharging speed at the bottom of the furnace to obtain an ozone oxidation catalyst.

Embodiment 3

[0044](1) Mix 325-mesh rho-type alumina and zinc oxide to obtain a mixture, wherein the mixture contains 4-10% by mass of zinc oxide. Spherical molding is performed using a spheronizer. Select a round disc of 1-3m, continuously add the mixture to the opened round disc at a feeding rate of 100kg / h, and at the same time spray water into the round disc at a rate of 50kg / L and then spray an appropriate amount of water until the diameter is When the ball is about 1-3mm, take it out for use to obtain the required material ball.

[0045] (2) The collected pellets were placed in a closed system and treated at a constant temperature of 90° C. for 24 hours.

[0046] (3) Add the pellets processed in step (2) continuously into the vertical kiln, and adjust the pellets to stay in the kiln constant temperature zone of 550° C. for 3 hours by controlling the discharging speed at the bottom of the furnace to obtain an ozone oxidation catalyst.

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Abstract

The invention relates to a preparation method of an ozone oxidation catalyst. The preparation method comprises the following steps: rho-type alumina, an active component and water are mixed to preparea spherical pellet with a particle diameter of 1 to 9mm, wherein the active component is zinc oxide; the pellet is treated at a constant temperature of 60 to 90 DEG C for 10 to 24 hours, and is calcined at 450 to 550 DEG C for 2 to 5 hours to obtain the ozone oxidation catalyst with aluminium oxide as a carrier. The invention also claims protection of the alumina oxidation catalyst with the aluminium oxide as the carrier prepared by the preparation method. The invention also discloses the application of the alumina oxidation catalyst with the aluminium oxide as the carrier in ozone oxidationorganic compounds. The method is simple, the cost is low, and the catalyst has a good catalytic performance in a catalytic reaction of ozone oxidation.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation and the field of sewage treatment, in particular to an ozone oxidation catalyst and its preparation method and application. Background technique [0002] Ozone has a strong oxidation ability and can directly oxidize and degrade organic matter, but its oxidation selectivity restricts the ability to deeply mineralize organic matter in sewage. In order to improve the utilization rate of ozone and the ability of advanced sewage treatment, the method of adding catalyst to the ozone oxidation sewage system is generally adopted. The catalyst has the function of catalyzing the decomposition of ozone. Ozone is converted into hydroxyl radicals with stronger oxidizing properties. Hydroxyl radicals can basically oxidize all organic matter and have the ability to treat sewage in depth. [0003] The commonly used catalysts are divided into two types: homogeneous and heterogeneous. The homogeneous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J35/08C02F1/78C02F101/32C02F101/34
CPCC02F1/725C02F1/78B01J23/002B01J23/06C02F2101/322C02F2101/345C02F2101/34B01J35/51
Inventor 吴张雄吴铎高兴敏
Owner KOOVINE ENVIRONMENTAL PROTECTION TECH CO LTD
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