Method for preparing wet oxidation catalyst carrier

A catalyst carrier, catalytic wet oxidation technology, applied in catalyst carrier, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve uneven dispersion of alumina and activated carbon, amorphous alumina Unstable properties, high content of sludge impurities, etc., to achieve high reactivity and use stability, improve mechanical strength and wear resistance, and improve activity and stability

Active Publication Date: 2015-06-03
CHINA PETROLEUM & CHEM CORP +1
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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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  • Method for preparing wet oxidation catalyst carrier
  • Method for preparing wet oxidation catalyst carrier

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Add solid aluminum chloride into distilled water, heat and stir until dissolved to obtain aluminum chloride solution (a). Dilute the concentrated ammonia water into about 10% dilute ammonia water (b) by adding appropriate amount of distilled water. Add the powdered coconut shell charcoal to the glutamic acid aqueous solution and mix evenly, the liquid-solid volume ratio is 3:1, then add water and make a slurry to obtain the slurry (c). The water glass is diluted in deionized water according to the ratio of 1:2 to prepare solution (d). After adding (a) into the gel tank and stirring and heating to 65°C, open the valve of the container containing (b), control the system in the tank to pH = 4.5 within 10 minutes, and continue to drop (b) , open the valve of the container containing (c), control the dropwise addition of the system in the tank to pH=8.0 within 30 minutes, control the valve of the container of (c), and ensure that the dropwise addition is completed at this t...

Embodiment 2

[0046] Add solid aluminum sulfate into distilled water, heat and stir until dissolved to obtain aluminum sulfate solution (a). Dilute the concentrated ammonia water into about 10% dilute ammonia water (b) by adding appropriate amount of distilled water. Add powdery coconut shell charcoal to glutamic acid aqueous solution and mix evenly, the volume ratio of liquid to solid is 3:1, then add water to beat to obtain activated carbon slurry (c). The water glass is diluted in deionized water according to the ratio of 1:2 to prepare solution (d). After adding (a) into the gel tank and stirring and heating to 65°C, open the valve of the container containing (b), control the system in the tank to pH = 4.5 within 10 minutes, and continue to drop (b) , open the valve of the container containing (c), control the dropwise addition of the system in the tank to pH=8.0 within 30 minutes, control the valve of the container of (c), and ensure that the dropwise addition is completed at this tim...

Embodiment 3

[0049] Add solid aluminum sulfate to distilled water while heating and stirring until dissolved to obtain aluminum sulfate solution (a). The solid sodium metaaluminate is formulated to a concentration of 250g Al 2 o 3 / l sodium aluminate solution (b). Add powdered coconut shell charcoal to glutamic acid aqueous solution and mix evenly, the volume ratio of liquid to solid is 3:1, then add water to make a slurry to obtain slurry (c). Take a glue tank, put 2L of deionized water into it, stir and heat to 60°C, then add the slurry (c). The water glass is diluted in deionized water according to the ratio of 1:2 to prepare solution (d). Take a reaction tank, put 2L of deionized water into it, stir and heat it to 65°C, open the valves of the containers containing (a), (b), and (c) at the same time, control the pH of the system to 8.0, and control the pH of the system within 45 minutes (a) and (c) drop off at the same time. Keep the temperature at 65°C, pH = 8.0, and after staying ...

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Abstract

The invention discloses a method for preparing a catalytic wet oxidation catalyst carrier. The catalyst carrier takes activated carbon as a core and amorphous silica-alumina as a shell. The preparation method comprises the following steps: introducing slurry of amino acid treated activated carbon into the process of gelling amorphous silica-alumina, aging after gelling, and carrying out hydrothermal treatment; filtering, washing and drying to obtain a carrier material; and preparing the catalyst carrier. The catalyst prepared from the catalyst carrier has relatively high reaction activity and using stability, and the service life of the catalyst can be prolonged.

Description

technical field [0001] The invention relates to a method for preparing a catalyst carrier, in particular to a method for preparing an active carbon-amorphous silicon-aluminum carrier used for catalytic wet oxidation. 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 high active components, high strength and high stabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/18B01J23/83C02F1/78
Inventor 蒋广安单广波杨春雁刘雪玲崔晓莉张晔李宝忠郭宏山刘忠生
Owner CHINA PETROLEUM & CHEM CORP
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