First, the introduction of flue gas denitrification
Flue gas denitrification is a response to national energy conservation and emission reduction measures to meet the emission standards for the NOX content of atmospheric pollutants. There are two methods of flue gas denitrification, SCR (catalyst) denitrification and SNCR (no catalyst) denitrification. The former has a high cost and a high denitration rate; the latter has a low cost and a less stable denitration rate, and the former is currently more used.
Second, the ceramic fiber module of flue gas denitrification insulation material
Flue gas denitrification devices are generally erected in the air in the form of flues, or on the roof of the plant, so lightweight insulation materials are more suitable and relatively popular. The current price is moderate, in the acceptable range of the majority of enterprises light insulation materials for glass wool and aluminum silicate fiber cotton (that is, ceramic fiber cotton), but the former use temperature below 400 ° C, not suitable, the latter use temperature in 800 ~ 1400 ° C, customers can choose the right material ceramic fiber cotton according to the flue temperature for insulation.
1. SCR denitrification, denitrification temperature is about 320 °C, flue gas temperature is 420 °C ~ 430 °C. Due to the occasional appearance of Mars in the flue gas, it is necessary to choose a high temperature insulation material with a temperature resistance of more than 1000 °C, and an Aladdin standard ceramic fiber module can be used, that is, a module made of Aladdin standard ceramic fiber blanket.
2. SNCR denitrification, denitrification flue gas temperature is about 900 °C ~ 1100 °C. Aladdin high aluminum/zirconium-containing ceramic fiber modules can be used, that is, modules made of Aladdin high aluminum/zirconium-containing ceramic fiber blankets.
Third, flue gas denitrification ceramic fiber flue insulation lining advantages
(1) Light weight, the average unit bulk weight of the furnace lining is 230Kg/m³, which is convenient for hoisting; and the requirements for high-temperature flue supports are relatively low;
(2) The aladdin ceramic fiber module for denitrification has good thermal stability and chemical stability, and the insulation lining of denitrification flue has a long service life;
(3) The thermal insulation effect is good, the Aladdin ceramic fiber module is in a pre-pressure state before installation, and after the completion of the flue lining masonry, the expansion of the module makes the furnace lining seamless, and can compensate for the shrinkage of the fiber lining to improve the integrity and thermal insulation of the fiber lining.
(4) The installation is convenient and fast, the construction period is short, and the construction cost is reduced by saving the construction period.
Aladdin High Temperature Material Co., Ltd. has developed for more than 30 years, is a professional ceramic fiber manufacturer, set production, research and development, engineering development in one. There are four major production bases in the country: Hebei, Shandong, Shanxi and Jiangsu, with more than 10 production lines and an annual output of more than 40,000 tons.
Aladdin's ceramic fiber products have corresponding test reports, want to know The product quality data of Aladdin, you can call Aladdin's telephone consultation: 0315-3271262.