Multifunctional environment catalytic material for tail gas purification and preparation method and application thereof

A technology for exhaust gas purification and catalytic materials, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve strong application and promotion value, high mechanical strength, and high efficiency Effect

Active Publication Date: 2020-10-09
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this invention is to address the current situation and existing problems of industrial denitrification, mercury, dioxin and carbon monoxide removal in existing gas-fired power plants, and propose a relatively A multi-functional environmental catalytic material for tail gas purification with a wide active temperature range. Another object of the present invention is to provide a preparation method for the above-mentioned catalyst, which is especially suitable for industrial tail gas purification such as gas-fired power plants, gas power plants, garbage incineration, and high-speed diesel engines.

Method used

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  • Multifunctional environment catalytic material for tail gas purification and preparation method and application thereof
  • Multifunctional environment catalytic material for tail gas purification and preparation method and application thereof
  • Multifunctional environment catalytic material for tail gas purification and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) carrier preparation

[0040] Weigh 100g of titanium dioxide and 10g of polyvinyl alcohol, add 500g of deionized water and stir evenly, stale for 12 hours, extrude into a strip-shaped carrier, dry in an oven at 80°C for 12h, and then roast in a muffle furnace at 500°C for 2h to obtain long strip carrier;

[0041] (2) Active component precursor solution preparation

[0042] Take by weighing 1.261g cerium nitrate hexahydrate, 2.058g manganese nitrate solution (50wt.%) and 1.519g copper nitrate trihydrate, add 48.380g deionized water and stir until the solution is clear and transparent, continue to add 9.676g glucose and at a temperature of Stirring and reacting at 80°C until the solution is clear and transparent and the viscosity reaches 2000-4000cP to prepare the active component precursor solution;

[0043] (3) Active component loading

[0044] Immerse the catalyst carrier prepared in step (1) in the cerium-manganese-copper composite oxide precursor solution prepa...

Embodiment 2

[0054] (1) carrier preparation

[0055] Weigh 100g of titanium dioxide and 10g of polyvinyl alcohol, add 500g of deionized water and stir evenly, stale for 12 hours, extrude into a strip-shaped carrier, dry in an oven at 80°C for 12h, and then bake in a muffle furnace at 700°C for 4h to obtain long strip carrier;

[0056] (2) Active component precursor solution preparation

[0057] Take by weighing 6.307g cerium nitrate hexahydrate, 6.175g manganese nitrate solution (50wt.%) and 3.037g copper nitrate trihydrate, add 155.190g deionized water and stir until the solution is clear and transparent, continue to add 31.038g glucose and at a temperature of Stirring and reacting at 80°C until the solution is clear and transparent and the viscosity reaches 2000-4000cP to prepare the active component precursor solution;

[0058] (3) Active component loading

[0059] Immerse the catalyst carrier prepared in step (1) in the cerium-manganese-copper composite oxide precursor solution prep...

Embodiment 3

[0069] (1) carrier preparation

[0070] Weigh 100g of titanium dioxide and 10g of polyvinyl alcohol, add 500g of deionized water and stir evenly, stale for 12 hours, extrude into a strip-shaped carrier, dry in an oven at 80°C for 12h, and then bake in a muffle furnace at 700°C for 2h to obtain long strip carrier;

[0071] (2) Active component precursor solution preparation

[0072] Take by weighing 6.307g cerium nitrate hexahydrate, 6.175g manganese nitrate solution (50wt.%) and 3.037g copper nitrate trihydrate, add 155.190g deionized water and stir until the solution is clear and transparent, continue to add 31.038g glucose and at a temperature of Stirring and reacting at 80°C until the solution is clear and transparent and the viscosity reaches 2000-4000cP to prepare the active component precursor solution;

[0073] (3) Active component loading

[0074] Immerse the catalyst carrier prepared in step (1) in the cerium-manganese-copper composite oxide precursor solution prep...

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Abstract

The invention discloses a multifunctional environment catalytic material for tail gas purification and a preparation method thereof, and belongs to the field of environment-friendly catalytic materials and air pollution treatment. The material is prepared by taking cerium-manganese-copper composite oxide as a catalytic active component, molybdenum-zirconium composite oxide as a cocatalyst and titanium dioxide as a carrier and adopting a step-by-step in-situ growth method. The catalyst is environment-friendly, not only can efficiently catalyze and remove nitric oxide, mercury, dioxin and carbonmonoxide at the same time, but also is wide in active temperature interval and low in SO2 oxidation efficiency. The denitration efficiency and the dioxin removal efficiency within the temperature of350-500 DEG C are both greater than 95%, and the mercury removal efficiency and the carbon monoxide removal efficiency are both greater than 99%. The product can be widely applied to the fields of industrial tail gas purification of gas power plants, gas power generation plants, waste incineration, high-speed diesel engines and the like.

Description

technical field [0001] The invention relates to a multifunctional environmental catalytic material for tail gas purification and a preparation method thereof, which belongs to the field of environmental protection catalytic materials and air pollution control. The product prepared by the method is especially suitable for gas-fired power plants, gas power plants, garbage incineration, high-speed diesel engines, etc. Industrial exhaust gas purification. Background technique [0002] Nitrogen oxides are one of the main causes of air pollution such as smog and acid rain, while mercury, carbon monoxide and dioxins can seriously endanger human health and the ecological environment. With the smooth implementation of the "Action Plan for Air Pollution Prevention and Control", ultra-low emissions of four air pollutants are imperative, among which the emission limit of nitrogen oxides shall not exceed 150mg / m 3 , the dioxin content shall not be higher than 0.1ng TEQ / m 3 , the carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01D53/86B01D53/56B01D53/70
CPCB01J23/002B01J23/8892B01D53/8662B01D53/8628B01D53/8665B01J2523/00B01D2257/602B01D2251/204B01D2251/2062B01J2523/17B01J2523/3712B01J2523/72Y02A50/20
Inventor 沈岳松金奇杰
Owner NANJING UNIV OF TECH
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