Vanadium-manganese-titanium system low-temperature plate catalyst and preparation method thereof

A catalyst, titanium-based technology, applied in the field of vanadium-manganese-titanium low-temperature flat-plate catalyst and its preparation, to achieve huge economic and environmental benefits, high denitrification efficiency, and slow down the deactivation rate

Inactive Publication Date: 2017-06-20
TIANHE BAODING ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a vanadium-manganese-titanium low-temperature catalyst and a

Method used

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  • Vanadium-manganese-titanium system low-temperature plate catalyst and preparation method thereof
  • Vanadium-manganese-titanium system low-temperature plate catalyst and preparation method thereof
  • Vanadium-manganese-titanium system low-temperature plate catalyst and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0042] Example 1

[0043] Weigh various raw materials according to weight fraction, totaling 6500g.

[0044]

[0045] Part of the deionized water is mixed with 143 g of ammonium metavanadate and 156 g of monoethanolamine, heated to 70° C. with a heating mantle, stirred until completely dissolved, and cooled to room temperature for later use to obtain solution R2. Part of the deionized water and 455 g of manganese nitrate are mixed and stirred for about 10 minutes to obtain solution R3. Part of the deionized water and 195 g of cerium nitrate are mixed and stirred for about 10 minutes to obtain solution R4. The weighed titanium dioxide powder (average particle size 0.63μm, specific surface area 118m 2 / g) Pour into a small kneader. Pour the weighed montmorillonite powder into a small kneader, close the lid, turn on the mixing function of the kneader, and mix well. Open the upper cover of the kneader, pour the remaining deionized water evenly into the kneader under stirring, close ...

Example Embodiment

[0046] Example 2

[0047] Weigh various raw materials according to weight fraction, totaling 6500g.

[0048]

[0049] Part of the deionized water is mixed with 65 g of ammonium metavanadate and 65 g of monoethanolamine, heated to 80° C. with a heating mantle, stirred until completely dissolved, and cooled to room temperature for later use to obtain solution R2. Part of the deionized water and 650 g of manganese nitrate are mixed and stirred for about 10 minutes to obtain solution R3. Part of the deionized water is mixed with 130 g of cerium nitrate and 65 g of copper sulfate, and stirred for about 10 minutes to obtain solution R4. The weighed titanium dioxide powder (average particle size 0.85μm, specific surface area 112m 2 / g) Pour into a small kneader. Pour the remaining deionized water evenly into the kneader under stirring, close the lid, and stir for 15 minutes. Open the upper cover of the kneader, slowly and evenly pour the R2 solution into the kneader under stirring, clo...

Example Embodiment

[0050] Example 3

[0051] Weigh various raw materials according to weight fraction, totaling 6500g.

[0052]

[0053] Part of the deionized water, 260 g of ammonium metavanadate and 260 g of monoethanolamine are mixed, heated to 70° C. with a heating mantle, stirred until completely dissolved, and cooled to room temperature for later use to obtain solution R2. Part of the deionized water and 260 g of manganese acetate were mixed and stirred for about 10 minutes to obtain solution R3. Part of the deionized water and 65 g of cobalt nitrate are mixed and stirred for about 10 minutes to obtain solution R4. The weighed titanium dioxide powder (average particle size 0.88μm, specific surface area 108m 2 / g) Pour into a small kneader. Pour the remaining deionized water evenly into the kneader under stirring, close the lid, and stir for 15 minutes. Open the upper cover of the kneader, slowly and evenly pour the R2 solution into the kneader under stirring, close the cover, and stir for 15...

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Abstract

The invention discloses a vanadium-manganese-titanium system low-temperature plate catalyst and a preparation method thereof. The catalyst is beneficial to reducing the effective temperature of the catalyst, maintains high denitration efficiency within the range of 160 to 240 DEG C, is applicable to a low-sulfur exhaust gas environment, not only can enable a denitration method to be arranged after dedusting and desulfurizing so as to reduce the deactivation rate of the denitration catalyst, but also can remove nitric oxide in the low-sulfur exhaust gas, and brings great economic benefit and environment benefit for national sustainable development.

Description

technical field [0001] The invention belongs to the technical field of SCR catalyst preparation, and relates to a vanadium-manganese-titanium low-temperature flat-plate catalyst and a preparation method thereof. Background technique [0002] There are a lot of nitrogen oxides in coal combustion flue gas, including N 2 O, NO, NO 2 , N 2 o 3 , N 2 o 4 etc. When these nitrogen oxides enter the atmosphere, they will not only cause a series of environmental problems such as acid rain, photochemical smog, greenhouse effect, and ozone layer destruction, but also endanger human health and cause respiratory diseases. In recent years, due to the increasing environmental and social problems caused by nitrogen oxide emissions, the National Environmental Protection Agency has put forward stricter requirements for the reduction of nitrogen oxide emissions. In some areas, the final concentration of nitrogen oxides in coal-fired flue gas is required to be 50ppm. the following. [000...

Claims

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Application Information

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IPC IPC(8): B01J23/34B01J23/889B01D53/86B01D53/56
CPCB01J23/002B01D53/8628B01D2258/0283B01J23/34B01J23/8892B01J23/8898B01J2523/00
Inventor 郭晨光张梓迅贾会珍刘旭辉关銞张鹏
Owner TIANHE BAODING ENVIRONMENTAL ENG
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