Fe-Cu oxide and molecular sieve composite honeycomb-type denitration catalyst and preparation method thereof

A denitration catalyst, copper oxide technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost and high process conditions, achieve controllable cost and optimize the preparation process. , Improve the effect of water and sulfur poisoning resistance

Inactive Publication Date: 2018-01-19
VALIANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patents such as publication numbers CN101925405B, CN102302944B, and CN105618159A disclose the preparation method of an integral extruded denitration catalyst material based on a metal-loaded molecular sieve as the main body. Higher, and in the preparation process, the process conditions such as pseudo-boehmite peptization, extrusion molding and drying are relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of iron-copper oxide and molecular sieve composite honeycomb type denitration catalyst, its component comprises by weight: 112.0g ferric oxide powder, 56.0g copper oxide powder, 224.0g SSZ-39 molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 15.5:1), 2100.0g titanium dioxide, 151.2g glass fiber, 33.6g amino carboxymethyl cellulose, 33.6g polyethylene oxide, 22.4g wood pulp, 11.2g stearic acid, 369.6g titanyl sulfate and 56.0 g lactic acid.

[0048] The preparation method of the above-mentioned iron-copper oxide and molecular sieve composite honeycomb denitration catalyst, the steps are as follows:

[0049] (1) dry mix

[0050] Add 112.0g ferric oxide powder, 56.0g copper oxide powder, 2100.0g titanium dioxide, 33.6g aminocarboxymethyl cellulose, 33.6g polyethylene oxide, 11.2g stearic acid and 369.6g sulfuric acid oxygen in the mixer Titanium is dry-blended, and the dry-blending time is 20min to obtain a mixed dry material;

[0051] (2) Primary mixing

[...

Embodiment 2

[0070] A kind of iron-copper oxide and molecular sieve composite honeycomb type denitration catalyst, its component comprises by weight: 27.4g ferric oxide powder, 56.6g copper oxide powder, 280.0g SSZ-16 molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 10:1), 2170.0g titanium tungsten powder (WO 3 The content is 5%), 112.0g glass fiber, 56.0g hydroxypropyl methylcellulose, 16.8g squash powder, 11.2g stearic acid, 203.5g titanyl sulfate and 70.0g lactic acid.

[0071] The preparation method of the above-mentioned iron-copper oxide and molecular sieve composite honeycomb denitration catalyst, the steps are as follows:

[0072] (1) dry mix

[0073] Add 27.4g ferric oxide powder, 56.6g copper oxide powder, 2170.0g titanium tungsten powder (WO 3 The content is 5%), 56.0g hydroxypropyl methylcellulose, 11.2g stearic acid and 203.5g titanyl sulfate are dry-blended, and the dry-blending time is 25min to obtain a mixed dry material;

[0074] (2) Primary mixing

[0075] Add 15...

Embodiment 3

[0093] A kind of iron-copper oxide and molecular sieve composite honeycomb type denitrification catalyst, its component comprises by weight: 13.8g ferric hydroxide, 126.2g copper hydroxide, 322.0g Zeolite Beta molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 25:1), 1960.0g titanium silicon powder (SiO 2 The content is 5%), 224g glass fiber, 50.4g hydroxypropyl methylcellulose, 16.8g polyethylene oxide, 16.8g squash powder, 5.6g stearic acid, 227g titanyl sulfate and 64.4g lactic acid.

[0094] The preparation method of the above-mentioned iron-copper oxide and molecular sieve composite honeycomb denitration catalyst, the steps are as follows:

[0095] (1) dry mix

[0096] Add 13.8g ferric hydroxide, 126.2g copper hydroxide, 1960.0g titanium silicon powder (SiO 2 The content is 5%), 50.4g hydroxypropyl methylcellulose, 16.8g polyoxyethylene, 5.6g stearic acid, 227.0g titanyl sulfate carry out dry blending, and the dry blending time is 20min, obtains mixed dry material; ...

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Abstract

The invention belongs to the technical field of atmospheric pollution treatment technology and environment-friendly catalytic materials, and especially relates to a Fe-Cu oxide and molecular sieve composite honeycomb-type denitration catalyst and a preparation method thereof. In the invention, by means of the synergistic effect between Fe/Cu oxide-Fe/Cu supported molecular sieve/titanium-based supporter, the denitration activity and anti-water and -sulfur poisoning performance of the honeycomb-type denitration catalyst are improved. The catalyst is relatively low in usage amount of the high-cost molecular sieve supporter, so that the denitration catalyst is controllable in cost and is environment-friendly; because titanyl sulfate is easy to hydrolyze, during a mixing process, sulfuric acid, which is generated in hydrolysis, is reacted in situ with a Fe/Cu oxide precursor and the titanium-based supporter, so that not only is a metal ion source required in ionic exchange of the molecularsieve acquired, but also the supporter can be completely sulfated by means of the sulfuric acid generated during the hydrolysis and exchange, thereby further increasing the denitration activity of the final product of the catalyst.

Description

technical field [0001] The invention belongs to the technical fields of air pollution control technology and environmental protection catalytic material, and in particular relates to an iron-copper oxide and molecular sieve composite honeycomb denitration catalyst and a preparation method thereof. Background technique [0002] Nitrogen oxide pollutants mainly come from stationary sources such as coal-fired power plants and industrial boilers, and mobile sources such as motor vehicle exhaust emissions. Nitrogen oxides are not only the basis of nitric acid rain, but also one of the main substances that form photochemical smog, cause the greenhouse effect and destroy the ozone layer. They have a strong toxic effect on the human body, the environment and ecology. With the rapid development of the domestic economy, the coal-based energy structure has led to a rapid increase in the emission of nitrogen oxide pollutants, seriously polluting the ecological environment, and has becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/46B01J29/72B01J29/85B01D53/86B01D53/56
Inventor 孙利胡葆华崔明周银波孟凡民徐永贞杨腾
Owner VALIANT CO LTD
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