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Mn2O3-SMS low-temperature denitration catalyst and preparation method thereof

A low-temperature denitrification, mn2o3-sms technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve ammonium sulfate or ammonium bisulfate poisoning, catalyst loss problems such as living, to achieve the effect of reducing time cost, optimizing texture and easy industrialization

Pending Publication Date: 2020-09-15
SHANXI COKING COAL GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a Mn 2 o 3 -SMS low-temperature denitrification catalyst and preparation method thereof

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  • Mn2O3-SMS low-temperature denitration catalyst and preparation method thereof

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Embodiment 1

[0023] a kind of Mn 2 o 3 -SMS low temperature denitrification catalyst, the Mn 2 o 3 / SMS low-temperature denitration catalyst material consists of upper surface spunbond material, middle layer meltblown material, lower surface spunbond material and active component Mn attached and embedded between each layer of materials 2 o 3 Constitute, among them, Mn 2 o 3 The mass percentage content is 20%. The fiber diameter of the upper and lower surface spunbond materials is 100 μm, and the surface density is 5 g / m 2 , The fiber diameter of the melt-blown material in the middle layer is 20 μm, and the surface density is 5 g / m 2 .

[0024] A kind of preparation above-mentioned Mn 2 o 3 -SMS low-temperature denitrification catalyst method is, the active component Mn 2 o 3 The powder and polyacrylonitrile PAN powder were mixed according to the mass ratio of 4:1, and Mn 2 o 3 / SMS composite material, and finally dried at 75°C to obtain Mn 2 o 3 / SMS low temperature denitri...

Embodiment 2

[0029] a kind of Mn 2 o 3 -SMS low temperature denitrification catalyst, the Mn 2 o 3 / SMS low-temperature denitration catalyst material consists of upper surface spunbond material, middle layer meltblown material, lower surface spunbond material and active component Mn attached and embedded between each layer of materials 2 o 3 Constitute, among them, Mn 2 o 3 The mass percentage content is 80%. The upper and lower surface spunbond materials have a fiber diameter of 1 μm and an area density of 500 g / m 2 , The fiber diameter of the melt-blown material in the middle layer is 0.3 μm, and the surface density is 200 g / m 2 .

[0030] A kind of preparation above-mentioned Mn 2 o 3 -SMS low-temperature denitrification catalyst method is, the active component Mn 2 o 3 The powder and polyacrylonitrile PAN powder were mixed according to the mass ratio of 13:7, and Mn 2 o 3 / SMS composite material, and finally dried at 105°C to obtain Mn 2 o 3 / SMS low temperature denitri...

Embodiment 3

[0035] a kind of Mn 2 o 3 -SMS low temperature denitrification catalyst, the Mn 2 o 3 / SMS low-temperature denitration catalyst material consists of upper surface spunbond material, middle layer meltblown material, lower surface spunbond material and active component Mn attached and embedded between each layer of materials 2 o 3 Constitute, among them, Mn 2 o 3 The mass percentage content is 60%. The fiber diameter of the upper and lower surface spunbond materials is 50 μm, and the surface density is 300 g / m 2 , The fiber diameter of the melt-blown material in the middle layer is 16 μm, and the surface density is 250 g / m 2 .

[0036] A kind of preparation above-mentioned Mn 2 o 3 -SMS low-temperature denitrification catalyst method is, the active component Mn 2 o 3 The powder and polyacrylonitrile PAN powder were mixed according to the mass ratio of 1:1, and Mn 2 o 3 / SMS composite material, and finally dried at 90°C to obtain Mn 2 o 3 / SMS low temperature denit...

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Abstract

The invention belongs to the technical field of coal chemical industry catalyst preparation, and particularly relates to a Mn2O3-SMS low-temperature denitration catalyst and a preparation method thereof. The Mn2O3 / SMS low-temperature denitration catalyst material is composed of an upper surface layer spun-bonded material, a middle layer melt-blown material, a lower surface layer spun-bonded material and an active component Mn2O3 attached and embedded among the materials, and the mass percent of Mn2O3 is 20-80%. The method comprises the following steps: mixing active component Mn2O3 powder withpolyacrylonitrile (PAN) powder, sequentially carrying out spun-bonding, melt-blowing and spun-bonding three-time spinning, carrying out needling reinforcement composite treatment to synthesize a Mn2O3 / SMS composite material, and finally drying at 75-105 DEG C to obtain the Mn2O3 / SMS low-temperature denitration catalyst. The preparation method is simple, the implementation cost is low, industrialapplication is easy, a large number of requirements of the market can be met, meanwhile, due to the fact that the polymer fiber of the multi-layer composite structure is adopted as a carrier, the internal structure is high in flexibility and rich in pore, and the catalytic capacity and reaction efficiency of the catalyst can be improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of coal chemical catalysts, in particular to a Mn 2 o 3 -SMS low temperature denitrification catalyst and preparation method thereof. Background technique [0002] As the world's largest coal consumer, China accounted for more than 50% of the world's coal consumption in 2017. The current situation and characteristics of China's energy structure are "rich in coal, poor in oil, and low in gas". The energy structure dominated by coal will not change in the next few decades. However, in the exhaust gas after coal combustion, NO x The existence of the gas not only corrodes equipment and pipelines, but also causes catalyst poisoning in the subsequent conversion, reforming, and synthesis processes, and seriously pollutes the environment after being discharged into the atmosphere. Therefore, NO x Efficient removal of coal is an important prerequisite for clean and efficient coal conversion. [0...

Claims

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Application Information

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IPC IPC(8): B01J31/32B01J23/34B01J35/10B01D53/86B01D53/56
CPCB01J31/32B01J23/34B01D53/8628B01J35/60
Inventor 李丽绒薛达杨彦群王浩张超李昂
Owner SHANXI COKING COAL GROUP