Montmorillonite, as a ceramic binder, can improve the strength and toughness of the product, which has been widely used by catalyst manufacturers. However, because montmorillonite has the characteristics of swelling when encountering water, there is a problem of cracking when it is used in a large amount, so the amount of added catalyst is only 2-5%. The feasibility of preparing SCR denitration catalyst by replacing TiO2 with montmorillonite has been recognized at the end of the 20th century. Japanese patent (JP 08-117597) published in 1996 pointed out that the preparation of SCR denitration catalyst by replacing TiO2 with modified montmorillonite has achieved high NOx removal rate.
Our company has greatly improved the specific surface area of montmorillonite, effectively solved the cracking problem in the use of ordinary montmorillonite, improved the mechanical properties and catalytic performance of SCR denitration catalyst, broke through the upper limit of adding montmorillonite, and reduced the amount of TiO2 addition through the original advanced process of ore dressing and purification of Bentonite, pore expansion modification and ultra-fine treatment. The product has been applied and formed in a denitration catalyst manufacturer in Zhejiang Province, which has the leading sales volume in China. The denitration performance of the product tested by Tianjin Automobile Testing Center is comparable to that of Japanese denitration catalyst. The denitration temperature window is in the range of 300-475 ℃, which is obviously superior to the conventional requirement of 300-420 ℃.
Ø High denitration rate
The montmorillonite products for denitration produced by our company can improve the adsorption performance of catalyst products, with good denitration effect and denitration rate up to 99.99%.
Ø High forming rate
The product can effectively solve the shrinkage cracking problem of the finished product, improve the forming rate of the catalyst, and greatly improve the strength and toughness of the catalyst product.
Ø Low price
The use of this product can reduce the amount of TiO2 added, reduce the production cost of denitration catalyst, and improve the profit margin and competitiveness of the product.
Partial replacement of titanium dioxide
The product partially replaces TiO2 in the production of denitration catalyst, and the denitration rate of catalyst can reach 99.99%.
The product is used as binder in the production of denitration catalyst, which can improve the forming rate, strength and toughness of catalyst.
【Product performance index】
【Usage and dosage】
Used as binder: amount added 5~10%；
Replacement of titanium dioxide powder: 10 ~ 30% of the amount added.