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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 preparation method thereof for the defects existing in the current denitrification catalyst

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Various raw materials were weighed according to the weight fraction, a total of 6500g.

[0044]

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

Embodiment 2

[0047] Various raw materials were weighed according to the weight fraction, a total of 6500g.

[0048]

[0049] Mix part of deionized water, 65g of ammonium metavanadate and 65g of monoethanolamine, heat to 80°C with a heating mantle, stir until completely dissolved, cool to room temperature for later use, and obtain solution R2. Part of the deionized water and 650 g of manganese nitrate were mixed and stirred for about 10 min to obtain solution R3. Part of the deionized water was mixed with 130 g of cerium nitrate and 65 g of copper sulfate, and stirred for about 10 min to obtain solution R4. The weighed titanium dioxide powder (average particle size 0.85μm, specific surface area 112m 2 / g) into a small kneader. Pour the remaining deionized water evenly into the kneader under stirring, cover 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, cover the cover, and stir for 15 minut...

Embodiment 3

[0051] Various raw materials were weighed according to the weight fraction, a total of 6500g.

[0052]

[0053] Mix part of deionized water, 260g of ammonium metavanadate and 260g of monoethanolamine, heat to 70°C with a heating mantle, stir until completely dissolved, cool to room temperature for later use, and obtain solution R2. Part of the deionized water and 260 g of manganese acetate were mixed and stirred for about 10 min to obtain solution R3. Part of deionized water and 65g of cobalt nitrate were 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) into a small kneader. Pour the remaining deionized water evenly into the kneader under stirring, cover 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, cover the cover, and stir for 15 minutes. Open the upper cover of...

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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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