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Oily wastewater ozone catalytic oxidation catalyst and preparation method of catalyst

A technology of ozone catalytic oxidation and manufacturing method, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems such as large performance differences and reduce processing costs. , Improve COD removal efficiency, reduce the effect of ozone dosage

Active Publication Date: 2014-07-02
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It can be seen that activated carbon has been used by researchers as the carrier of ozone catalytic oxidant or ozone catalytic oxidant, but due to the difference in structural characteristics and surface properties of commercially available activated carbon, its performance is quite different, and it is used in the advanced treatment of petroleum and petrochemical wastewater. , when the goal is to reduce the COD below 50mg / L, there are few related reports
The carbon material that the present invention relates to is used for the preparation method of catalyst carrier of ozone catalytic oxidation catalyst and catalyst and has not yet seen bibliographical information

Method used

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  • Oily wastewater ozone catalytic oxidation catalyst and preparation method of catalyst

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Embodiment 1

[0034] The present embodiment provides a kind of manufacture method of oily sewage ozone catalytic oxidation catalyst, comprises the following steps:

[0035] Take 2000g of powdered petroleum coke with a particle size of 100-150 mesh, put it into the isothermal zone of the rotary activation furnace, inject tap water with a flow rate of 100mL / min into the activation furnace, and the tap water will become water vapor through the preheating zone of the activation furnace, and the isothermal zone of the activation furnace will The temperature is controlled at 700°C to 750°C, the petroleum coke powder is activated by water vapor for 2 hours, and then taken out after cooling to obtain the catalyst carrier matrix carbon material;

[0036] Take 200g of catalyst support matrix carbon material, weigh 67gKOH and 33g of potassium carbonate, mix and add 300mL of water to prepare an alkaline aqueous solution, then mix with matrix carbon material evenly, evaporate to dryness at 110°C, and the...

Embodiment 2

[0041] The present embodiment provides a kind of manufacture method of oily sewage ozone catalytic oxidation catalyst, comprises the following steps:

[0042] Get 100 g of the carbon material carrier prepared in Example 1, weigh 8 g of copper nitrate, 6 g of nickel nitrate and 6 g of molybdenum nitrate and prepare 300 mL of a mixed aqueous solution, mix the carbon material carrier and nitrate evenly under stirring, and then Heat and dry, then move the dried mixed material into a roasting furnace, and roast at 550°C for 3 hours under the protection of nitrogen, and obtain powdered carbon containing catalyst active components after cooling;

[0043] Take 100g of powdered carbon containing catalyst active components, add 100g of 10m% polyvinyl alcohol acetate solution, grind and mix evenly, and place it for 24 hours, then take an appropriate amount and put it into a Φ100mm×40mm mold, and then move the mold into a compression molding machine , raise the pressure to 200 MPa, mainta...

Embodiment 3

[0046] The present embodiment provides a kind of manufacture method of oily sewage ozone catalytic oxidation catalyst, comprises the following steps:

[0047] Take 2000g of powdered petroleum coke with a particle size of 100 mesh to 150 mesh, put it into the isothermal zone of the rotary activation furnace, inject tap water with a flow rate of 100mL / min into the activation furnace, and the tap water becomes water vapor through the preheating zone of the activation furnace, and the activation furnace isothermal The temperature of the zone is controlled at 700-750°C, and the petroleum coke powder is activated by water vapor for 2 hours, and then taken out after cooling to prepare the carbon material of the catalyst carrier matrix;

[0048] Take 200g of catalyst carrier matrix carbon material, weigh 150g KOH and 50g sodium hydroxide, and prepare 500mL aqueous solution, stir and mix well, evaporate to dryness at 110°C, then transfer to another rotary activation furnace, activate at...

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Abstract

The invention provides an oily wastewater ozone catalytic oxidation catalyst and a preparation method of the catalyst. The method comprises the following steps: pre-activating petroleum coke by using water vapor to obtain a catalyst carrier matrix carbon material; carrying out activation reaction by using the catalyst carrier matrix carbon material and an activating agent to obtain a carbon material carrier; mixing the carbon material carrier and a catalyst precursor nitrate solution, drying and roasting to obtain powder carbon comprising active components of the catalyst; evenly mixing the powder carbon comprising the active components of the catalyst with an adhesive, pressing and forming, releasing pressure, and then drying and crushing to prepare the oily wastewater ozone catalytic oxidation catalyst; or evenly mixing the powder carbon comprising the active components of the catalyst with an adhesive, carrying out extrusion forming, releasing pressure, and then drying and crushing to prepare the catalyst carrier, then mixing the catalyst carrier with the catalyst precursor nitrate solution, drying, roasting and cooling, and then preparing the ozone catalytic oxidation catalyst. The catalyst is capable of reducing the ozone dosage, improving COD removing efficiency and reducing COD upgrading cost.

Description

technical field [0001] The invention relates to an ozone catalytic oxidation catalyst for oily sewage and a manufacturing method thereof, belonging to the technical field of oily sewage treatment in petrochemical industry. Background technique [0002] The chemical oxygen demand (COD) of oily sewage (including refining oily sewage and oilfield produced water) is the main control pollution factor for sewage discharge. This kind of oily sewage is generally treated by oil removal-air flotation (or chemical coagulation)-biochemical (mainly using activated sludge method or A-O process combined with anaerobic, anoxic and aerobic)-filtration-exhaust process, other The COD of the discharged water can usually reach between 70mg / L and 150mg / L. In order to further reduce the COD and meet the new emission standards for COD control indicators, such as COD≤50mg / L, in recent years, the oily sewage has been upgraded to meet the standard treatment process. A variety of studies have been car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/885B01J23/745C02F1/78
Inventor 陈进富陈怡赵立军崔文峰任立鹏王景峰
Owner BC P INC CHINA NAT PETROLEUM CORP
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