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Industrial fixed source organic exhaust gas treatment catalyst and preparation method thereof

An organic waste gas, fixed source technology, applied in the field of air pollution control, can solve the problems of difficult investment and operating costs for small and medium-sized enterprises, hinder the large-scale popularization and use of technology, and expensive catalysts, and achieve convenient industrial production, good performance, and low price. Effect

Inactive Publication Date: 2016-11-09
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The catalytic combustion method mostly uses precious metals such as palladium, platinum, and rhodium as catalysts. However, this type of catalyst is expensive and the temperature required for the reaction is also high. It is difficult for small and medium-sized enterprises to bear its expensive investment and operating expenses; Widespread use of technology

Method used

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  • Industrial fixed source organic exhaust gas treatment catalyst and preparation method thereof
  • Industrial fixed source organic exhaust gas treatment catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Pretreatment of honeycomb ceramics: immerse the honeycomb ceramics in distilled water for 1 hour, electric stirring for 30 minutes at a speed of 30 rpm; then dry in an oven at 150°C for 2 hours.

[0027] (2)γ-Al 2 o 3 Sol preparation: commercially available 20g γ-Al 2 o 3 Type activated alumina was added to 150ml of distilled water, stirred at a constant temperature of 60°C until completely dispersed, and electric stirred for 30 minutes at a speed of 60 rpm.

[0028] (3) Preparation of impregnation solution: Mix and stir copper nitrate, cerium nitrate and distilled water at a mass ratio of 1:2:5 until completely dissolved.

[0029] (4)γ-Al 2 o 3 Coating; the honeycomb ceramic in step (1) is impregnated in the γ-Al in step (2) 2 o 3 Take it out after 1 hour in the sol, and bake it for 6 hours at a temperature of 450°C.

[0030] (5) Loading of active components: the honeycomb ceramics in step (4) were immersed in the immersion solution in step (3) for 2 hours,...

Embodiment 2

[0033] (1) Pretreatment of honeycomb ceramics: immerse the honeycomb ceramics in distilled water for 1 hour, electric stirring for 30 minutes at a speed of 30 rpm; then dry in an oven at 150°C for 2 hours.

[0034] (2)γ-Al 2 o 3 Sol preparation: commercially available 20g γ-Al 2 o 3 Type activated alumina was added to 150ml of distilled water, stirred at a constant temperature of 60°C until completely dispersed, and electric stirred for 30 minutes at a speed of 60 rpm.

[0035] (3) Preparation of impregnation solution: Mix and stir copper nitrate, cobalt nitrate, cerium nitrate and distilled water at a mass ratio of 2:1:4:10 until completely dissolved.

[0036] (4)γ-Al 2 o 3 Coating; the honeycomb ceramic in step (1) is impregnated in the γ-Al in step (2) 2 o 3 Take it out after 1 hour in the sol, and bake it for 6 hours at a temperature of 450°C.

[0037] (5) Loading of active components: the honeycomb ceramics in step (4) were immersed in the immersion solution in st...

Embodiment 3

[0040] (1) Pretreatment of honeycomb ceramics: immerse the honeycomb ceramics in distilled water for 1 hour, electric stirring for 30 minutes at a speed of 30 rpm; then dry in an oven at 150°C for 2 hours.

[0041] (2)γ-Al 2 o 3 Sol preparation: commercially available 20g γ-Al 2 o 3 Type activated alumina was added to 150ml of distilled water, stirred at a constant temperature of 60°C until completely dispersed, and electric stirred for 30 minutes at a speed of 60 rpm.

[0042] (3) Preparation of impregnation solution: Mix and stir copper nitrate, nickel nitrate, cerium nitrate and distilled water at a mass ratio of 2:1:4:10 until completely dissolved.

[0043] (4)γ-Al 2 o 3 Coating; the honeycomb ceramic in step (1) is impregnated in the γ-Al in step (2) 2 o 3 Take it out after 1 hour in the sol, and bake it for 6 hours at a temperature of 450°C.

[0044] (5) Loading of active components: the honeycomb ceramics in step (4) were immersed in the immersion solution in step...

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Abstract

The invention relates to an industrial fixed source organic exhaust gas treatment catalyst and a preparation method thereof and belongs to the technical field of air pollution control. The preparation method mainly utilizes one or more of Pt, Ag, Cu, Fe, Rh, Pd, Co, Ni, Mn and Ce oxides as active ingredients and honeycomb ceramic, ZSM-5 or SBA-15 as a carrier to prepare the organic exhaust gas treatment catalyst. The organic exhaust gas treatment catalyst has good performances and has toluene removal efficiency of 99% at a temperature of 255 DEG C and an ethene removal efficiency of 99% at a temperature of 310 DEG C. Compared with the same type of catalysts, the industrial fixed source organic exhaust gas treatment catalyst reduces a work temperature by about 30 DEG C when the toluene removal efficiency is 99%, reduces an ethene removal work temperature by about 60 DEG C, has the advantages of simple preparation processes, wide raw material source and low price and is suitable for industrial production.

Description

technical field [0001] The invention relates to a catalyst for treating organic waste gas from industrial stationary sources and a preparation method thereof, belonging to the technical field of air pollution treatment. Background technique [0002] There are many industries involved in industrial stationary organic waste gas, and there are many types of pollutants and complex compositions. The types of compounds that are often encountered include hydrocarbons, ketones, esters, alcohols, phenols, aldehydes, amines, nitriles (cyanides) and other organic compounds, most of which are toxic and seriously endanger human health; Eyes and respiratory system, severe poisoning; some can cause cancer, teratogenic, mutagenic. Some well-known organic compounds such as formaldehyde, benzene, toluene, xylene, vinyl chloride, and polycyclic aromatic hydrocarbons are extremely harmful to human health. In addition, some such as chlorofluorocarbons and hydrochlorofluorocarbons have a destru...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/89B01D53/86B01D53/72
CPCB01J23/83B01D53/8668B01D2255/40B01J23/002B01J23/894B01J2523/00B01J2523/17B01J2523/3712B01J2523/31B01J2523/845B01J2523/847B01J2523/18
Inventor 刘磊张俊丰王靖李小芝蔡英
Owner XIANGTAN UNIV