A kind of low-temperature denitrification catalyst with strong anti-sulfur and anti-water performance and preparation method thereof

A low-temperature denitrification and catalyst technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low-temperature denitrification catalyst activity decline, and improve low-temperature denitrification activity, high-low temperature denitrification activity, The effect of a wide range of raw material sources

Active Publication Date: 2019-09-27
ANHUI XINCHUANG ENERGY SAVING & ENVIRONMENTAL PROTECTION SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, domestic and foreign scholars have achieved some meaningful results in the study of low-temperature denitration catalysts. However, the activity of low-temperature denitration catalysts is generally susceptible to SO 2 and the impact of water vapor have dropped significantly, and have not been effectively solved so far

Method used

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  • A kind of low-temperature denitrification catalyst with strong anti-sulfur and anti-water performance and preparation method thereof
  • A kind of low-temperature denitrification catalyst with strong anti-sulfur and anti-water performance and preparation method thereof
  • A kind of low-temperature denitrification catalyst with strong anti-sulfur and anti-water performance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Preparation of active components

[0045] The first step is to weigh 2g of the active component precursor V 2 o 5 Add 12ml of isobutanol (reducing agent) and 8ml of benzyl alcohol (solvent) to the Erlenmeyer flask, and after the Erlenmeyer flask is connected to a condensation reflux device, place it in a constant temperature magnetic stirring oil bath at 150°C to reflux for 3 hours In the second step, adding a certain amount of phosphoric acid with a concentration of 85% to the mixed solution in the first step, controlling the molar ratio of V and P to be 4:1, and continuing to reflux for 2h; the third step, conical The mixture in the bottle is suction filtered to realize solid-liquid separation; in the fourth step, the solid in the third step is roasted at 150° C. for 6 hours, and the active component vanadyl phosphate is obtained after cooling.

[0046] (2) Preparation of catalyst

[0047] The first step, weighing 0.2g active component vanadyl phosphate and 1.8...

Embodiment 2

[0049] (1) Preparation of active components

[0050] The first step is to weigh 2g of the active component precursor V 2 o 5 Add 12ml of isobutanol (reducing agent) and 8ml of benzyl alcohol (solvent) to the Erlenmeyer flask, and after the Erlenmeyer flask is connected to a condensation reflux device, place it in a constant temperature magnetic stirring oil bath at 150°C to reflux for 3 hours ; In the second step, adding a certain amount of phosphoric acid with a concentration of 85% to the mixed solution in the first step, controlling the molar ratio of V and P to be 5:1, and continuing to reflux for 2h; the third step, conical The mixture in the bottle is suction filtered to realize solid-liquid separation; in the fourth step, the solid in the third step is roasted at 150° C. for 6 hours, and the active component vanadyl phosphate is obtained after cooling.

[0051] (2) Preparation of catalyst

[0052] The first step, weighing 0.2g active component vanadyl phosphate and 1...

Embodiment 3

[0054] (1) Preparation of active components

[0055] The first step is to weigh 2g of the active component precursor V 2 o 5 Add 12ml of isobutanol (reducing agent) and 8ml of benzyl alcohol (solvent) to the Erlenmeyer flask, and after the Erlenmeyer flask is connected to a condensation reflux device, place it in a constant temperature magnetic stirring oil bath at 150°C to reflux for 3 hours ; In the second step, adding a certain amount of phosphoric acid with a concentration of 85% to the mixed solution in the first step, controlling the molar ratio of V and P to be 6:1, and continuing to reflux for 2h; the third step, conical The mixture in the bottle is suction filtered to realize solid-liquid separation; in the fourth step, the solid in the third step is roasted at 150° C. for 6 hours, and the active component vanadyl phosphate is obtained after cooling.

[0056] (2) Preparation of catalyst

[0057] The first step, weighing 0.2g active component vanadyl phosphate and 1...

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Abstract

The invention discloses a low-temperature denitration catalyst with strong anti-sulfur water-resistant properties and a preparation method thereof. Anatase type TiO2 is used as a carrier of the catalyst and is used for loading an active component, oxygen vanadium phosphate; the mole ratio of V to P in the active component, oxygen vanadium phosphate, is (1-6):1; the weight of the active component, oxygen vanadium phosphate, in the catalyst is 5%-15% of the total weight of the catalyst. According to the invention, the method comprises the following steps: with V2O5 as an active precursor, isobutyl alcohol as a reducing agent and benzyl alcohol as a solvent, performing reflux reaction at 150 DEG C, then adding phosphoric acid at proper ratio, and heating and refluxing; leaching, drying and calcinating the reaction mixture, thereby acquiring the active component, oxygen vanadium phosphate; lastly, adding the prepared active component, oxygen vanadium phosphate, and anatase type TiO2 with the specific surface area not below 250m<2> / g as the carrier into distilled water at proper ratio, stirring and mixing, and performing water bath drying and calcining, thereby acquiring the catalyst. The catalyst disclosed by the invention has higher low-temperature denitration activity and strong property for resisting against SO2 and water vapor toxifying.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to a low-temperature denitrification catalyst with strong sulfur and water resistance properties and a preparation method thereof. Background technique [0002] Nitrogen oxides (NO x ) is the main air pollutant that forms pollution such as acid rain, smog and photochemical smog. my country NO x The emissions are relatively large. According to the data published in the Bulletin on the State of the Environment in China, in 2015 my country's NO x Emissions are still as high as 18.52 million tons. Faced with the current severe air pollution situation, the country has issued and revised a series of environmental protection regulations and standards since the "Twelfth Five-Year Plan" to strengthen the control of NO x control. [0003] Coal burning is the cause of my country's NO x One of the main causes of pollution, it is mainly controlled by selective cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/198B01J21/06B01J35/10B01J37/10B01J37/08B01D53/86B01D53/56
CPCB01D53/8628B01J21/063B01J27/198B01J37/08B01J37/088B01J37/10B01D2258/0283B01J35/615
Inventor 史德明陈光张松方辉夏勇军胡笳贾勇陈宜华朱宝忠包向军
Owner ANHUI XINCHUANG ENERGY SAVING & ENVIRONMENTAL PROTECTION SCI & TECH
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