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NCA-2 catalyst
Read:2071  2008-11-15 10:53:25

    Produced by the coke oven gas into the user has to go through before the complex purification treatment to recover useful materials, such as: benzene, and the removal of harmful gases, such as: hydrogen sulfide, ammonia, hydrogen cyanide, and so on. In the early 1990s, Shijiazhuang Coking Plant from Germany to introduce a set of advanced gas purification and chemical recovery unit, after several years of actual operation, have shown that the sets of purification equipment not only has the process simple, safe and reliable operation of the characteristics of an effective and The old process to resolve the serious problem of environmental pollution and corrosion of equipment. At present, the Ministry of Metallurgy Design and Research Institute of Anshan Coking refractories responsible for the introduction of a replica of several large-scale domestic steel coking plant, such as Maanshan Iron and Steel, Kunming Steel, Handan Iron and Steel, Benxi Iron and Steel, Pro Steel, Wuhan Iron and Steel Company, Baotou Steel coke plant, and so have been built This recovery unit. For which the ammonia decomposition of ammonia decomposition of sulfur recovery boiler furnace and Klaus in more than 68. In the new coke oven gas purification process, arising from the coke oven gas with crude NH3 and HCN trace of harmful gases such as ammonia through the calciner into N2, H2 and CO2, containing H2S through the furnace system to generate Claus sulfur recovery. YWC-95-type ammonia decomposition catalyst for such a break down ammonia and Klaus furnace and the furnace and to replace imports of development of G-117 of the coke oven gas purification catalyst.
    NCA-2 as the catalyst summed up the practice of using ammonia decomposition rate of 98%, after ammonia decomposition furnace after ammonia gas is less than 0.5g/m3, which fully meet the performance and the level of imports of catalyst. 
    NCA-2 type catalyst by the high MgO and refractoriness AL2O3 sintered into the porous type of synthetic Mg-like carrier spar, and then after several impregnation nickel nitrate solution into the post-baking Practice has proved that this synthetic crystalline Mg Stone water resistance than single periclase (MgO) to be superior performance.

Model

NCA-2

Chemical composition

MgO≥80%  AL2O3≥6%  Ni≥6% 

And rare-earth element catalyst <0.5% (Tianjin University research results)

Physical properties

1, the size of appearance: ф20x20mm round cylindrical
2, the appearance of color: black ash
3, the proportion of sand: 1500kg/m3
4, anti-broken strength:> 100Mpa
5, surface area: 1 - 3m 2 / g

Model

YCT - 10

Chemical composition

AL 2 O 3 ≥92%   Fe 2 O 3 <0.1%   SiO 2 <0.5%
Na 2 O<0.5%   loss on ignition <5%

Physical properties

1, the appearance of white spherical particles

2, Size: ф4 - 6mm small ball

3, the proportion of sand: 600 - 700kg/m3

4, surface area: 200 - 240m 2 / g

 

Model

YCT - 11

Chemical composition

AL 2 O 3 ≥92%   Fe2O3<0.1%   SiO2<0.5% 

Na 2 O<0.5%   TiO2<0.5 %   loss on ignition <5%

Physical properties

1, the appearance of white spherical particles

2, Size: ф4 - 6mm small ball

3, the proportion of sand: 650 - 750kg/m3

4, surface area: 180 - 220m2 / g

 
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