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Corrugated-plate type SCR (selective catalytic reduction) denitration catalyst

A technology of denitrification catalyst and corrugated plate type, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of corrugated plate denitrification catalysts such as easy corrosion and heavy weight, and achieve light weight and easy installation And replacement, not easy to corrode effect

Active Publication Date: 2012-06-20
北京北科环境工程有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to solve the current corrugated plate denitrification catalyst easy to corrode, heavy weight and other problems, and invented a corrugated plate denitrification catalyst

Method used

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  • Corrugated-plate type SCR (selective catalytic reduction) denitration catalyst
  • Corrugated-plate type SCR (selective catalytic reduction) denitration catalyst

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Embodiment

[0019] In this embodiment, 25 layers of titanium mesh are used. The titanium mesh is 400 mesh, the thickness of the titanium mesh is 0.2mm, and the size of the titanium mesh is: 500×500mm. The size of the corrugated plate corrugation is: the inner diameter is 19mm, the outer diameter is 20mm, that is, the wall thickness is 1mm. It can be seen from the above that at 1m 3 In the volume space, there are 8 corrugated plate catalyst modules with a surface area of ​​157m 2 . Since the framework used in the present invention is a 400 mesh titanium mesh, the calculated specific surface area has no reference significance, and the actual specific surface area is much higher than 157m 2 . The catalyst weight used in this embodiment is 0.07t / m 3 . Far lower than the same type of catalysts currently on the market, the weight of the current commercial corrugated plate catalyst is about 0.4t / m 3 .

[0020] From the above examples, it can be seen that under the same volume, the catalys...

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Abstract

The invention belongs to the field of environmental engineering, and relates to a corrugated-plate type SCR (selective catalytic reduction) denitration catalyst. The catalyst is in a corrugated-plate type and belongs to heterogeneous catalysts. A skeleton of the catalyst is made of a 316L stainless steel plate, a 316L stainless steel net, a titanium plate or a titanium net, wherein the thickness of the 316L stainless steel plate, the 316L stainless steel net, the titanium plate or the titanium net is 0.2-1mm; the stainless steel net or the titanium net has 200-600 meshes; and the stainless steel plate, the stainless steel net, the titanium plate or the titanium net is pressed into a corrugated shape, and corrugations are formed by connecting semi-circles of diameter of 2-30mm in an up-down manner. By adopting the stainless steel plate or the titanium plate as the skeleton of the catalyst; and by adopting a large-pore diameter channel design, the problem that the catalyst easily generates soot deposits when the dust content is relatively high is also solved.

Description

technical field [0001] The invention belongs to the field of environmental engineering and relates to a corrugated plate type SCR denitrification catalyst. Background technique [0002] On April 13, 2011, the Ministry of Environmental Protection issued the "Emission Standards of Air Pollutants for Thermal Power Plants" (the second consultation draft). The new standards set stricter regulations on the emission limits of the three main pollutants, smoke, sulfur dioxide and nitrogen oxides. In terms of denitrification, the new standard stipulates that by 2015, all thermal power units will implement the NOx emission concentration in key areas not to exceed 200mg / m 3 , 400mg / m in non-key areas 3 limit value. New units in key areas will implement 200 mg / m from 2010 3 emission limits. [0003] According to national requirements, the denitrification system should be gradually included in the construction plan of the existing and newly built thermal power units. Judging from t...

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Application Information

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IPC IPC(8): B01J35/10B01D53/86B01D53/56
Inventor 宋存义常冠钦董震松张秋林郭坤梁宝瑞赵荣志邢奕汪莉钱大益金科学
Owner 北京北科环境工程有限公司
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