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Zirconium boride auxiliary denitration and desulfurization catalyst and preparation method thereof

A technology of catalysts and additives, which is applied in the field of catalyst preparation, can solve problems such as the inability to meet the technical requirements of low-temperature desulfurization and denitrification, the large space for technical requirements, and the decline in catalytic efficiency, so as to improve thermal stability and reactivity, increase reaction area, The effect of strong reactivity

Inactive Publication Date: 2018-06-22
宁波高新区州致科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the technologies used for simultaneous desulfurization and denitrification mainly include electron beam method, activated carbon method, CuO / γ-Al 2 o 3 From the perspective of industrial boilers, the technical demand for low-temperature denitrification and desulfurization process is huge, and the main components of the catalysts used in the existing desulfurization and denitrification technologies are activated carbon, Cu / Mg / Al, CuO / Al2O3; activated carbon catalysts include Traditional activated carbon catalysts and honeycomb activated carbon (ACH) catalysts disclosed in Patent No. 03145680.4; activated carbon, Cu / Mg / Al, CuO / Al2O3 are medium-temperature or high-temperature catalysts, and the catalytic temperature is relatively high. Generally, the effective catalytic temperature is above 300 ° C. However, below 300°C, the catalytic efficiency drops significantly, which cannot meet the technical requirements of low-temperature desulfurization and denitrification.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0030] (1) Mixing process:

[0031](2) Weigh 1000g of tetrabutyl titanate and dissolve it in 4.0L of absolute ethanol, stir for 30min, add 110g of diethanolamine as an inhibitor to delay the strong hydrolysis of tetrabutyl titanate, continue stirring for 1h, then add distilled water drop by drop Stir until a colorless transparent sol is obtained. Add 350g of diatomite-graphene to the above sol, stir to load nickel oxide on the diatomite-graphene, wherein the diatomite-graphene is obtained by mixing particles and sintering at 150°C for 3 hours, and Add 65g of metal oxide additives, after stirring, suction filter and dry at 70°C for 2h, and finally place the obtained solid powder in a muffle furnace for calcination at 500°C for 2h, and then pulverize it into a powdery composite catalyst raw material after cooling; molding Process:

[0032] Take by weighing the powdery composite catalyst preliminary material 200g that the mixing process gained, add stearic acid 8g, add methacry...

Embodiment 3

[0034] (1) Mixing process:

[0035] Weigh 1250g of tetrabutyl titanate and dissolve it in 4.96L of absolute ethanol, stir for 30min, add 120g of diethanolamine as an inhibitor to delay the strong hydrolysis of tetrabutyl titanate, continue stirring for 1h, then add distilled water dropwise and stir until A colorless transparent sol was obtained. Take 400g of diatomite-graphene and add it to the above sol, stir to load nickel oxide on the diatomite-graphene, wherein the diatomite-graphene is obtained by mixing particles and sintering at 150°C for 3 hours, and Add 70g of metal oxide additives, after stirring, suction filter and dry at 70°C for 2h, and finally place the obtained solid powder in a muffle furnace for calcination at 500°C for 2h, and after cooling, pulverize it into a powdery composite catalyst raw material;

[0036] (2) Forming process:

[0037] Take by weighing the powdery composite catalyst primary material 200g that the mixing process gains, add stearic acid 8...

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PUM

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Abstract

The invention relates to a denitration and desulfurization catalyst. The denitration and desulfurization catalyst takes diatomite-graphene as a carrier, the mass ratio of the diatomite to the grapheneis 2 to 1, the nanoscale nickel oxide is loaded on the carrier to form a composite oxide active carrier matrix, a metallic oxide auxiliary is loaded on the composite oxide active carrier matrix to serve as a catalytic auxiliary, the metallic oxide auxiliary is zirconium boride, and the removal rates of catalyzed oxynitride and oxysulfide are respectively more than 92% and 96%.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and discloses a zirconium boride additive denitrification and desulfurization catalyst and a preparation method thereof. Background technique [0002] At present, the technologies used for simultaneous desulfurization and denitrification mainly include electron beam method, activated carbon method, CuO / γ-Al 2 o 3 From the perspective of industrial boilers, the technical demand for low-temperature denitrification and desulfurization process is huge, and the main components of the catalysts used in the existing desulfurization and denitrification technologies are activated carbon, Cu / Mg / Al, CuO / Al2O3; activated carbon catalysts include Traditional activated carbon catalysts and honeycomb activated carbon (ACH) catalysts disclosed in Patent No. 03145680.4; activated carbon, Cu / Mg / Al, CuO / Al2O3 are medium-temperature or high-temperature catalysts, and the catalytic temperature is relati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J32/00B01J37/08B01J23/83B01J23/889B01J23/86B01J35/10B01D53/86B01D53/60
CPCB01D53/8637B01J23/755B01J23/83B01J23/866B01J23/8892B01J37/0018B01J37/082B01J37/088B01J35/60Y02A50/20
Inventor 姜旭峰黄平建
Owner 宁波高新区州致科技有限公司
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