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Cellular V2O5-Pr6O11-SbPO4/TiO2 based low-temperature sulfur-resistant denitration catalyst and preparation method thereof

A technology of v2o5-pr6o11-sbpo4, denitration catalyst, applied in physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., can solve the problems of lack of mature literature and reports, technology blockade, etc.

Inactive Publication Date: 2016-10-12
LONGYAN ZIJIN INNOVATION RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, foreign countries have imposed a technical blockade on my country in the preparation of catalysts, and there are no mature documents and reports to refer to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Catalyst component is in the present embodiment: V 2 o 5 Accounting for 3wt% of the catalyst, Pr 6 o 11 4wt% catalyst, SbPO 4 Accounting for 1.5wt% of the catalyst, TiO 2 The base carrier accounts for 91.5wt% of the catalyst.

[0024] The preparation process of catalyst in the present embodiment is as follows:

[0025] Step (1), take a certain amount of monoethanolammonium and dissolve it in deionized water, add ammonium metavanadate and praseodymium nitrate to make V 2 o 5 and Pr 6 o 11 Accounting for 3wt% and 4wt% of the catalyst respectively, heat the solution to 60°C and stir, and use it as an active liquid after the solution is completely dissolved;

[0026] In step (2), use industrial-grade titanium dioxide (brand DN-00A) as the carrier, respectively mix titanium dioxide accounting for 91.5wt% of the catalyst and SbPO2 accounting for 1.5wt% of the catalyst 4 1. The lubricant (stearic acid and lactic acid with a mass ratio of 1:3.75) accounting for 1-2% o...

experiment example 2

[0034] Catalyst component is in the present embodiment: V 2 o 5 Accounting for 3wt% of the catalyst, Pr 6 o 11 4wt% catalyst, SbPO 4 Accounting for 3wt% of the catalyst, TiO 2 The base carrier accounts for 90wt% of the catalyst.

[0035] The preparation process of catalyst in the present embodiment is as follows:

[0036] Step (1), take a certain amount of monoethanolammonium and dissolve it in deionized water, add ammonium metavanadate and praseodymium nitrate to make V 2 o 5 and Pr 6 o 11 Accounting for 3wt% and 4wt% of the catalyst respectively, heat the solution to 60°C and stir, and use it as an active liquid after the solution is completely dissolved;

[0037] In step (2), use industrial-grade titanium dioxide (brand DN-00A) as the carrier, respectively mix titanium dioxide accounting for 90wt% of the catalyst and SbPO2 accounting for 3wt% of the catalyst 4 1. The lubricant (stearic acid and lactic acid with a mass ratio of 1:3.75) accounting for 1-2% of the ca...

Embodiment 3

[0045] Catalyst component is in the present embodiment: V 2 o 5 Accounting for 1.5wt% of the catalyst, Pr 6 o 11 4wt% catalyst, SbPO 4 Accounting for 1.5wt% of the catalyst, TiO 2 The base carrier accounts for 93wt% of the catalyst.

[0046] The preparation process of catalyst in the present embodiment is as follows:

[0047] Step (1), take a certain amount of monoethanolammonium and dissolve it in deionized water, add ammonium metavanadate and praseodymium nitrate to make V 2 o 5 and Pr 6 o 11 Accounting for 1.5wt% and 4wt% of the catalyst respectively, the solution was heated to 60°C and stirred. After the solution was completely dissolved, it was used as an active liquid for later use;

[0048] In step (2), use industrial-grade titanium dioxide (brand DN-00A) as the carrier, respectively mix titanium dioxide accounting for 93wt% of the catalyst and SbPO2 accounting for 1.5wt% of the catalyst 4 1. The lubricant (stearic acid and lactic acid with a mass ratio of 1:3...

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Abstract

The invention discloses a cellular V2O5-Pr6O11-SbPO4 / TiO2 based low-temperature sulfur-resistant denitration catalyst and a preparation method thereof. The cellular V2O5-Pr6O11-SbPO4 / TiO2 based low-temperature sulfur-resistant denitration catalyst is prepared from the following components: 1-5wt% of V2O5, 2-6wt% of Pr6O11, 1.5-5wt% of SbPO4 and 84-95.5wt% of a TiO2-based carrier, wherein the TiO2-based carrier comprises one or more of titanium dioxide, titanium tungsten powder and titanium tungsten silicon powder. The invention further discloses a preparation method of the cellular catalyst. The prepared catalyst has high denitration efficiency at the smoke (exhaust gas) temperature of 175-300 DEG C, and also has excellent sulfur resistance.

Description

technical field [0001] The invention relates to the field of industrial flue gas and ship tail gas treatment, in particular to a honeycomb low-temperature anti-sulfur denitration catalyst and a preparation method that can be used to control nitrogen oxide emissions with a smoke (tail) gas temperature lower than 300°C. Background technique [0002] As the primary pollutant in urban air, NO x Compounding with PM2.5 is one of the main reasons for the formation of smog, which seriously endangers people's health and social environment. my country NO x The emissions are mainly from thermal power generation, transportation and various industrial processes. Although motor vehicle exhaust and NO in the power industry x Emissions have been significantly controlled, but for non-power industries (including self-owned power stations) and marine diesel engine exhaust NO x Emission control has encountered great difficulties. This is because the discharge temperature of flue gas from i...

Claims

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Application Information

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IPC IPC(8): B01J27/198B01J35/04B01D53/86B01D53/56
CPCB01D53/8628B01J27/198B01D2258/0283B01J35/56
Inventor 林啟维吴晓东胡锋石磊
Owner LONGYAN ZIJIN INNOVATION RES INST
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