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Honeycombed denitration catalyst taking titanium aluminum composite oxide as carrier and preparation method thereof

A composite oxide and denitration catalyst technology, which is applied in the field of honeycomb denitration catalyst and its preparation, and industrial gas purification, can solve the problem of whether the bonding force between the composite carrier and the cordierite meets the requirements of use, etc., and achieves high-efficiency denitration activity and resistance. Sulfur performance, good denitration activity, uniform distribution effect

Active Publication Date: 2014-12-10
HAO HUA CHENGDU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent does not state whether the binding force between the composite carrier and cordierite meets the requirements for use

Method used

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  • Honeycombed denitration catalyst taking titanium aluminum composite oxide as carrier and preparation method thereof
  • Honeycombed denitration catalyst taking titanium aluminum composite oxide as carrier and preparation method thereof
  • Honeycombed denitration catalyst taking titanium aluminum composite oxide as carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Get 1L of titanyl sulfate and aluminum sulfate mixed solution, the concentration of titanyl sulfate is calculated as TiO 2 Calculated as 100g / L, the concentration of aluminum sulfate is Al 2 o 3 Calculated as 15g / L. Add the mixed solution into the constant temperature reaction kettle, control the temperature in the constant temperature reaction kettle to be 55°C, and add K 2 CO 3 aqueous solution, the dropping rate is 3mL / min, and the pH value of the mixed solution in the constant temperature reactor is adjusted to 6.0. After continuing to stir at constant temperature for 1.5 h, the mixed solution in the constant temperature reaction kettle was filtered to obtain a solid. The solid matter was washed 4 times, and then dried at 80° C. for 8.0 hours to obtain a titanium-aluminum composite oxide.

[0035] (2) Take 0.3L of immersion solution, the concentration of ammonium tungstate is 92g / L and the concentration of ammonium metavanadate is 15.5g / L. Grind the titani...

Embodiment 2

[0039] (1) Get 1L of titanyl sulfate and aluminum sulfate mixed solution, the concentration of titanyl sulfate is calculated as TiO 2 Calculated as 120g / L, the concentration of aluminum sulfate is Al 2 o 3 Calculated as 20g / L. Add the mixed solution into the constant temperature reaction kettle, control the temperature in the constant temperature reaction kettle to be 60°C, and add K 2 CO 3 aqueous solution, the rate of addition is 4mL / min, and the pH value of the mixed solution in the constant temperature reactor is adjusted to 6.0. After continuing to stir at constant temperature for 1.5 h, the mixed solution in the constant temperature reaction kettle was filtered to obtain a solid. The solid matter was washed 4 times, and then dried at 100° C. for 8.0 hours to obtain a titanium-aluminum composite oxide.

[0040] (2) Take 0.3L of immersion solution, the concentration of ammonium tungstate is 115g / L and the concentration of ammonium metavanadate is 16g / L. Grind the tit...

Embodiment 3

[0044] (1) Get 1L of titanyl sulfate and aluminum sulfate mixed solution, the concentration of titanyl sulfate is calculated as TiO 2 Calculated as 100g / L, the concentration of aluminum sulfate is Al 2 o 3 Calculated as 20g / L. Add the mixed solution into the constant temperature reaction kettle, control the temperature in the constant temperature reaction kettle to be 55°C, and add K 2 CO 3 aqueous solution, the rate of addition is 5mL / min, and the pH value of the mixed solution in the constant temperature reactor is adjusted to 7.0. After continuing to stir at constant temperature for 2.0 h, the mixed solution in the constant temperature reaction kettle was filtered to obtain a solid. The solid matter was washed 4 times, and then dried at 100° C. for 8.0 hours to obtain a titanium-aluminum composite oxide.

[0045] (2) Take 0.3L of immersion solution, the concentration of ammonium tungstate is 116g / L and the concentration of ammonium metavanadate is 18g / L. Grind the tit...

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Abstract

The invention belongs to the field of chemistry and relates to an industrial gas purification method, in particular to a honeycombed denitration catalyst taking titanium aluminum composite oxide as a carrier and a preparation method thereof. The catalyst comprises the effective ingredients including the titanium aluminum composite oxide, vanadium pentoxide and tungsten trioxide and takes glass fiber as a reinforcing agent, polyacrylamide as an adhesive, glycerol as a lubricating agent and activated carbon as a pore-forming agent. The preparation method comprises the following steps: preparing the titanium aluminum composite oxide; preparing a powder catalyst; extruding and forming the honeycombed catalyst; post-treating the honeycombed catalyst. According to the invention, the flue gas denitration catalyst (SCR catalyst) prepared by the method has high mechanical strength, high denitration activity, good sulfur resistance and reliable production process and can meet the demands on the denitration of nitric oxide by industrial flue gas, thereby having better application prospect; the honeycombed denitration catalyst prepared by the method has great significance in breaking through the foreign technical barriers and promoting the development of the denitration industry in China.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to an industrial gas purification method, in particular to a honeycomb denitration catalyst with titanium-aluminum composite oxide as a carrier and a preparation method thereof. Background technique [0002] NO x Including NO, NO 2 , N 2 O, N 2 o 3 , N 2 o 4 , N 2 o 5 and other oxides of nitrogen, among which NO and NO 2 are important air pollutants. NO x It not only endangers human health, but also induces various diseases, and also causes various secondary pollutions. NO x It can form photochemical smog and acid rain, destroy the ozone layer, and affect the entire ecological environment. NO x It is also an important factor in the formation of regional fine particle pollution and haze. In recent years, my country's NO x Emissions are rising rapidly. If there is no control, my country's nitrogen oxide emissions will reach 30 million tons in 2020, posing a huge threat to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/12B01J23/30B01D53/86B01D53/56
Inventor 李敬郑珩王磊张向辉王蕾胡洧冰张新波何洋
Owner HAO HUA CHENGDU TECH
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