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Catalytic wet oxidation catalyst and preparation method thereof.

A technology for catalyzing wet oxidation and catalysts, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. instability, etc.

Active Publication Date: 2016-06-29
FUSHUN HUANKE PETROCHEM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method belongs to the process of physical mixing of alumina-containing species and activated carbon, and the dispersion of alumina and activated carbon is uneven; and the sludge used has high impurity content, and the obtained amorphous alumina is unstable, unrepeatable, and complex in structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Add solid aluminum chloride and cerium nitrate into distilled water while heating and stirring until dissolved to obtain solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10wt% dilute ammonia water (b). Powdered coconut shell charcoal is impregnated with Cu-containing impregnating solution, dried at 120°C for 240 minutes, roasted at 550°C for 4 hours under nitrogen protection, added to glucose aqueous solution and mixed evenly, the liquid-solid volume ratio is 3:1, and then added water to make a slurry to obtain a slurry (c). After adding (a) into the gelling tank and stirring and heating to 60°C, open the valve of the container containing (b), and control the system in the tank to drop to pH=4.0 within 10 minutes, then add (c), continue to add (b) dropwise, and control the dropwise addition of the tank system to pH=8.0 within 30 minutes. Keep the temperature at 60°C, pH=8.0, age for 1 hour, filter th...

Embodiment 2

[0053]Add solid aluminum sulfate and cerium nitrate into distilled water while heating and stirring until dissolved to obtain solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10wt% dilute ammonia water (b). Powdered coconut shell charcoal is impregnated with Cu-containing impregnating solution, dried at 120°C for 240 minutes, roasted at 550°C under nitrogen protection for 4 hours, added to glucose aqueous solution and mixed evenly, the volume ratio of liquid to solid is 5:1, and then added to beating with water to obtain activated carbon Slurry (c). Take a plastic tank, add (a) into the tank, stir and heat to 60°C, open the valve of the container containing (b), control the system in the tank to drop to pH=4.0 within 10 minutes, open (c ) the valve of the container, continue to drop (b), control the dropwise addition of the system in the tank to pH=8.0 within 30 minutes, control the valve of the container of...

Embodiment 3

[0056] Add solid aluminum sulfate and cerium nitrate into distilled water while heating and stirring until dissolved to obtain solution (a). Prepare solid sodium metaaluminate to a concentration of 250gAl 2 o 3 / L sodium aluminate solution (b). The powdered coconut shell charcoal is impregnated with an impregnation solution containing Fe, dried at 120°C for 240 minutes, roasted at 550°C for 4 hours under the protection of nitrogen, added to the sucrose aqueous solution and mixed evenly, the liquid-solid volume ratio is 3:1, and then beaten with water to obtain Serous (c). The water glass is diluted in deionized water according to the ratio of 1:2 to prepare solution (d). Take a glue tank, put 2L of deionized water into it, stir and heat it to 60°C, then add the slurry (c), open the valve of the container containing (a) and (b) at the same time, control the pH of the system to 8.0, and control it for 45 minutes After dripping (a), close the valve. Keep the temperature at 6...

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PUM

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Abstract

The invention discloses a catalytic wet oxidation catalyst and a preparation method thereof. The catalyst comprises the following core-shell structure components, the core-shell structure components take active carbon loaded with transition metal as a core, and take alumina containing rare earth metal or amorphous silicon-aluminum as a shell. The method is characterized in that during a gel forming process of alumina or amorphous silicon-aluminum and a rare earth metal compound, an active carbon slurry loaded with transition metal is introduced, and after the gel forming process, the catalyst can be obtained through an aging process. The catalyst has high reaction activity and usage stability.

Description

technical field [0001] The invention relates to a catalytic wet oxidation catalyst and a preparation method thereof, in particular to a catalytic wet oxidation catalyst containing active carbon and alumina or amorphous silicon aluminum and a preparation method thereof. Background technique [0002] With the increasingly stringent global environmental protection regulations, the control indicators for sewage discharge standards are getting higher and higher. Under this form, wastewater catalytic oxidation treatment methods have been paid more and more attention to and adopted by people, such as the catalytic wet method of high-concentration sewage Oxidation, electrolytic catalytic oxidation, photocatalytic oxidation, advanced oxidation, etc. In the process of catalytic oxidation of wastewater, in order to obtain the ideal treatment effect and keep the cost of wastewater treatment low by reducing the reaction temperature and pressure, the preparation of cheap catalysts with hi...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/34B01J35/00C02F1/72C02F1/74C02F1/58C02F101/34
Inventor 蒋广安邓德刚单广波刘雪玲张晔李宝忠郭宏山
Owner FUSHUN HUANKE PETROCHEM TECH DEV CO LTD
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