Efficient response optical coupling denitration catalyst and preparation method thereof

A denitrification catalyst and optical coupling technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve problems such as large energy consumption, complex process, and poor photoactivity

Pending Publication Date: 2021-04-20
安徽工业大学科技园有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the previous research of our research group, the preparation method of the catalyst was a two-step fire method, which required large energy consumption and complicated processes. At the same time, NaCO 3 As an alkaline thermal modifier will generate CO 2 Such gas is generated to cause slurry splashing, and there are risks in the high-temperature preparation process of the catalyst, and the catalyst preparation method is limited by the optimization of the fire method and the wet method, and the catalyst performance cannot meet the higher requirements
[001

Method used

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  • Efficient response optical coupling denitration catalyst and preparation method thereof
  • Efficient response optical coupling denitration catalyst and preparation method thereof
  • Efficient response optical coupling denitration catalyst and preparation method thereof

Examples

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Example Embodiment

[0054]Example 1

[0055]Dry the block-containing tantantite-containing high slag, placed in a powder grinding tank, and then taking 100 g of titanium-containing high-containing slag powder and 5g analysis pure CEO210g analysis pure MNO2And 34.5 g of NaOH particles mixed abrasion in magnesium oxide crucible, first temperature rise to 350 ° C for 1 h to remove binding water and volatile impurities, and then heated in a muffle in a muffle at a heating rate of 5 ° C / min to 1500 ° C Insulation 1H is cooled to room temperature, resulting in Ce, MN-based optimization of heavy hood, and is described as 1-Example 1, and its X-ray diffraction image such asfigure 1 , Scanning electron microscope imageimage 3 X-ray energy spectrum analysis is shown in Table 1.

[0056]Table 1: X-ray energy spectrum analysis of 1-Example 1 in Example 1 (AT%, combinedimage 3 )

[0057]

[0058]Then, 1-Example 1 was broken, and then placed in the ball milling tank, the ball milling was pulled, and the filtration was dried a...

Example Embodiment

[0061]Example 2

[0062]The block-containing titanium-containing high slag was broken, placed in a powder mill, and then taking 100 g of titanium-containing high-flavored high-containing powder and 1 g analysis pure CEO.2, 1G analysis pure MNO2And 5.1 g of NaOH particles mixed polishing well in the magnesium oxide crucible, first warmed to 250 ° C for 0.5 hours to remove the combined water and volatile impurities, and then heated in a muffle in a muffle at a temperature increase of 3 ° C / min to 1350 The incubation of ° C was cooled to room temperature, obtained by Ce, MN-based optimized heavy strut, and X-ray diffracted image, such as 1-Example 2, X-ray diffraction imagefigure 1 .

[0063]Then, 1-Example 2 was broken, and then placed in the ball milling, the ball milling was placed, and the filtration was dried and grounded, and 16 g was poured into 80 mL of the 1% HCl solution to extract 2 h to peel off the non-target component, and then The mixed solution was diluted 4 times to contin...

Example Embodiment

[0064]Example 3

[0065]The block-containing titanium-containing high slag was dried, placed in a powder grinding tank, and then taking 100 g of titanium-containing high-containing high slag powder and 10g analysis pure CEO.230g analysis pure MNO2And 21 g of NaOH particles mixed abutment in the magnesium oxide crucible, first temperature rise to 300 ° C for 1 h to remove the combined water and volatile impurities, and then heat the temperature of 10 ° C / min to 1500 ° C heat insulation 1H is cooled to room temperature, resulting in Ce, MN-based optimization of heavy struts, rejected as 1-Example 3, which X-ray diffraction image isfigure 1 .

[0066]Then, 1-Example 3 was broken, and then placed in the ball milling, the ball milling was pulled, and the filtration was dried and grounded, and 16 g was poured into 400 ml of 20% HCl solution to extract 1 h to peel off the non-target component, and then The mixed solution was diluted 10 times to continue to be stirred for 10 min, and the filtra...

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Abstract

The invention discloses an efficient response optical coupling denitration catalyst and a preparation method thereof, and belongs to the technical field of blast furnace slag application. The preparation method of the product comprises the following steps: uniformly mixing the titanium-containing blast furnace slag with the rare earth element oxide, the transition metal oxide and a certain amount of sodium hydroxide, heating to melt, reconfiguring a silicate phase while solid-dissolving transition group elements into a perovskite phase, and stripping the silicate phase through acid leaching treatment, thereby finally obtaining the perovskite-based functional material. The obtained product is the optical coupling low-temperature denitration catalyst with efficient response activity. According to the catalyst prepared by the method disclosed by the invention, the removal rate of NOx can reach 100% and the N2 selectivity can reach 92% under a low-temperature condition (140 DEG C) in a manner of adding a light source, so that the denitration catalyst capable of efficiently responding under the low-temperature condition is prepared at low cost in a short process; and the method disclosed by the invention has great significance in high-added-value application of the titanium-containing blast furnace slag and continuous and efficient removal of NOx in industrial waste gas.

Description

technical field [0001] The invention belongs to the technical field of blast furnace slag application, and in particular relates to a catalyst with high-efficiency response optically coupled low-temperature denitrification performance prepared by using titanium-containing blast furnace slag as a raw material through one-step modification. Background technique [0002] Nitrogen oxides (NO x ) is one of the main air pollutants that cause photochemical smog, acid rain, nitrate aerosol, ozone layer hole and greenhouse effect, and is also one of the pathogenic sources of human respiratory system, cardiovascular disease and diabetes. With the enhancement of people's awareness of environmental protection, for the deteriorating air pollution and the continuous growth of NO x Emissions, the state has stricter requirements on nitrogen oxide emissions. "Emission Standards of Air Pollutants for Thermal Power Plants" (GB13223-2011) stipulates that coal-fired boilers NO x Emissions sha...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01D53/86B01D53/56
Inventor 吕辉鸿季益龙丁博代兵倪文雷昭
Owner 安徽工业大学科技园有限公司
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