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Preparation method of granular catalyst suitable for catalytic combustion of VOCs

A catalytic combustion, particle-type technology, applied in combustion methods, physical/chemical process catalysts, combustion types, etc., can solve the problem of low catalytic activity, and achieve the effects of high catalytic activity, large specific surface area, and simple and effective preparation method.

Inactive Publication Date: 2018-05-01
HANGZHOU KAIMING CATALYSTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the particulate catalytic burner in this invention patent has the problem of low catalytic activity

Method used

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  • Preparation method of granular catalyst suitable for catalytic combustion of VOCs
  • Preparation method of granular catalyst suitable for catalytic combustion of VOCs

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Embodiment 1

[0021] Embodiment 1: as attached figure 1 Shown, a kind of preparation method applicable to the granular catalyst of VOCs catalytic combustion is characterized in that comprising the following steps successively:

[0022] (1) Carrier pretreatment: use alumina as the skeleton carrier, where γ-Al 2 o 3 The weight ratio is 94%, the particle size is 3mm, and the specific surface area is 320m 2 / g, the bulk density is 0.68g / mL, and then soaked in deionized water for 8h,

[0023] (2) Carrier impregnation: The impregnation solution includes 18kg deionized water, 50ml chloropalladium acid and 50ml chloroplatinic acid, adjust the pH to 2.0 with dilute nitric acid solution, then perform 5min stirring operation and 2h impregnation operation in sequence;

[0024] (3) Reduction treatment: After the impregnation operation is completed, the reduction operation is carried out in a deionized aqueous solution of hydrogen peroxide, and the reduction time is 2 hours;

[0025] (4) Post-process...

Embodiment 2

[0028] Embodiment 2: as attached figure 2 Shown, a kind of preparation method applicable to the granular catalyst of VOCs catalytic combustion is characterized in that comprising the following steps successively:

[0029] (1) Carrier pretreatment: use alumina as the skeleton carrier, where γ-Al 2 o 3 The weight ratio is 96%, the particle size is 5mm, and the specific surface area is 350m 2 / g, the bulk density is 0.68g / mL, and then soaked in deionized water for 10h,

[0030] (2) Carrier impregnation: The impregnation solution includes 18kg deionized water, 100ml chloropalladium acid and 100ml chloroplatinic acid, adjust the pH to 3.0 with dilute nitric acid solution, then perform 10min stirring operation and 2h impregnation operation in sequence;

[0031] (3) Reduction treatment: After the impregnation operation is completed, the reduction operation is carried out in a deionized aqueous solution of hydrogen peroxide, and the reduction time is 2 hours;

[0032] (4) Post-pr...

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Abstract

The invention belongs to the technical field of VOCs purification treatment, and particularly relates to a preparation method of a granular catalyst suitable for catalytic combustion of VOCs. The preparation method successively comprises the following steps: carrier pretreatment, carrier impregnation, reduction treatment and post-treatment. The preparation method of the granular catalyst suitablefor the catalytic combustion of the VOCs achieves an objective of effective preparation of the granular catalyst through the four-step preparation method of carrier pretreatment, carrier impregnation,reduction treatment and post-treatment. The preparation method has the advantages of simple and effective preparation method, easy availability of raw materials, good dispersibility of the prepared granular catalyst, large specific surface area, multiple active sites and high catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of VOCs purification treatment, and in particular relates to a preparation method of a granular catalyst suitable for catalytic combustion of VOCs. Background technique [0002] Volatile organic compounds (VOCs for short) refer to organic compounds that have a relatively high saturated vapor pressure and are relatively volatile at normal temperature and pressure. They are a relatively common and very important air pollutant. Volatile organic compounds mainly come from petrochemical, pharmaceutical, printing, spraying, motor vehicle and shoemaking industries, including hydrocarbons, aldehydes, esters, ketones, halogenated hydrocarbons, aromatic hydrocarbons, polycyclic aromatic hydrocarbons, etc. VOCs are mostly toxic and accompanied by foul odor, such as polycyclic aromatic hydrocarbons such as benzene, formaldehyde, toluene, chlorobenzene, and ethylbenzene. The composition of VOCs is relatively complex, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J23/46F23G7/07
CPCB01J23/44B01J23/464F23G7/07F23G2209/14
Inventor 沈荷红王磊沈一泽
Owner HANGZHOU KAIMING CATALYSTS
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