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Catalytic ozonation catalyst as well as preparation method and application thereof

An ozone catalytic oxidation and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve problems such as low catalytic efficiency, reduce diffusion resistance, large pore size and pore volume, The effect of improving the COD removal rate

Inactive Publication Date: 2018-05-22
TIANJIN BISHUIYUAN MEMBRANE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing ozone catalytic oxidation catalysts still have the problem of low catalytic efficiency.

Method used

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  • Catalytic ozonation catalyst as well as preparation method and application thereof
  • Catalytic ozonation catalyst as well as preparation method and application thereof
  • Catalytic ozonation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The preparation method of the ozone catalytic oxidation catalyst in this embodiment includes the following steps:

[0048] A) Use a pulverizer to pulverize 100g of raw coal to a particle size of no more than 75μm, then add 15g of active ingredients and mix well, and then add 5g of coal tar for kneading, and then squeeze it into molding equipment to obtain molding materials;

[0049] B) Place the molding material in a carbonization furnace and carbonize under anaerobic conditions. The carbonization temperature is 400°C and the carbonization time is 60min. After the carbonization is completed, the material will be discharged from the outlet for cooling; then the carbonized material after carbonization is activated In the furnace, steam is used as the activator to activate at 1000°C for 20 hours, and the mass ratio of the amount of steam to the raw coal is 20:1, and finally the ozone catalytic oxidation catalyst is obtained;

[0050] Wherein, the active component is KNO 3 , Fe(NO...

Embodiment 2

[0052] The preparation method of the ozone catalytic oxidation catalyst in this embodiment includes the following steps:

[0053] A) Use a pulverizer to pulverize 500g of raw coal to a particle size of not more than 75μm, then add 5g of active ingredients and mix well, then add 100g of coal tar for kneading, and then squeeze it into molding equipment to obtain molding material;

[0054] B) Place the molding material in a carbonization furnace and carbonize under anaerobic conditions. The carbonization temperature is 600°C and the carbonization time is 10 minutes. After the carbonization is completed, the material is discharged from the outlet to cool; then the carbonized material after carbonization is activated In the furnace, steam is used as the activator to activate at 700°C for 60 hours, and the mass ratio of the amount of steam to the raw coal is 15:1, and finally the ozone catalytic oxidation catalyst is obtained;

[0055] Wherein, the active component is KNO 3 , Fe(NO 3 ) 3 A...

Embodiment 3

[0057] The preparation method of the ozone catalytic oxidation catalyst in this embodiment includes the following steps:

[0058] A) Use a pulverizer to pulverize 100g of raw coal to a particle size of not more than 75μm, then add 5g of active ingredients and mix well, then add 10g of coal tar for kneading, and then squeeze it into molding equipment to obtain molding materials;

[0059] B) Place the molding material in a carbonization furnace and carbonize under anaerobic conditions. The carbonization temperature is 500°C and the carbonization time is 30min. After the carbonization is completed, the material is discharged from the outlet for cooling; then the carbonized material after carbonization is activated In the furnace, steam is used as the activator to activate at 900°C for 40 hours, and the mass ratio of the amount of steam to the raw coal is 20:1, and finally the ozone catalytic oxidation catalyst is obtained;

[0060] Wherein, the active component is Na 2 CO 3 , Cu(NO 3 ) ...

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Abstract

The invention relates to the technical field of water treatment, and concretely relates to a catalytic ozonation catalyst as well as a preparation method and application thereof. The preparation method of the catalytic ozonation catalyst comprises the following steps of grinding raw material coal, adding active components, forming, carbonizing and activating to obtain the catalytic ozonation catalyst. The active components are prepared from one or more of a transition metal compound, a rare earth metal compound, an alkali metal compound and an alkaline-earth metal compound. According to the preparation method, an activation reaction mechanism is changed, so that a pore structure of the catalyst is changed, and a double-pore distribution structure with coexistence of mesopores and micropores is prepared; the catalyst has high catalytic activity, and the removal rate of COD (Chemical Oxygen Demand) can be greatly improved; the catalyst is developed in mesopores, larger in pore volume, and beneficial to enabling pollutants to enter pores of the catalyst so as to fully contact with an active center; the micropores exist at the same time, so that the catalytic activity can be effectively improved.

Description

Technical field [0001] The present invention relates to the technical field of water treatment, in particular to an ozone catalytic oxidation catalyst and its preparation method and application. Background technique [0002] Ozone is a molecule with strong oxidizing properties, and it has been widely used in the field of domestic water treatment and industrial water treatment. For example, ozone oxidation treats wastewater such as printing and dyeing wastewater, landfill leachate, coal chemical wastewater, and waste emulsion. However, due to the high cost of ozone generation, the utilization rate of ozone is not high. In order to improve the utilization rate of ozone, the introduction of catalysts makes ozone have stronger oxidizing ability, so that ozone catalytic oxidation has become an important advanced sewage treatment technology. [0003] As a high-efficiency, practical, and no secondary pollution advanced oxidation technology, ozone catalytic oxidation technology can effect...

Claims

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Application Information

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IPC IPC(8): B01J27/22B01J35/10C02F1/78
CPCC02F1/725C02F1/78B01J27/22B01J35/617B01J35/60
Inventor 陈亦力张玉芬代攀李新涛张思强
Owner TIANJIN BISHUIYUAN MEMBRANE MATERIAL CO LTD
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