What are the application characteristics of three-dimensional graded ceramic catalytic filter tubes in glass furnaces?

Since petroleum coke powder, natural gas, heavy oil and other fuels are mainly used in the production of the glass industry, they produce a large amount of sulfur oxides, nitrogen oxides and particulate pollutants after combustion, which not only destroys the ecological environment system, but also seriously affects human production and life. Activity. As the environmental protection standards promulgated by the national and local governments have become more and more stringent in controlling industrial pollutant emissions, in order to upgrade and transform, the traditional glass kiln series dust removal technology has gradually emerged, which requires a large area, complex systems, high equipment costs, dust removal and denitrification. Disadvantages such as low efficiency. Therefore, the development of low-cost, short-process, multi-pollutant collaborative removal materials and technologies has become a new direction in the field of flue gas purification of small and medium-sized industrial combustion equipment in non-power industries. Among them, flue gas pollutant integration technology with coupled catalytic denitration active ingredients as the core has become a new technology that has attracted widespread attention at home and abroad.
At present, different catalytic functional layers are distributed in the gradient inner layer of ceramic fiber tubes, which have the significant advantages of low filtration resistance and high denitration efficiency. They are especially suitable for the flue gas desulfurization, denitration and dust removal purification needs of small and medium-sized boiler companies. This technology can be widely used in coking, waste incineration, ceramic glass, biomass boilers, refractory kilns, cement and other industries to achieve in-depth control of industrial flue gas economy.
ceramic fiber tube
The three-dimensional graded ceramic catalytic filter tube uses a vacuum directional coating method to prepare a three-dimensional graded ceramic catalytic filter tube on the surface of the ceramic fiber, which can effectively avoid the shortcomings of particle agglomeration in traditional filter tubes. The core of this technology is to control the thickness of the catalytic layer of the coated ceramic fiber filter to retain the dense layer on the outer surface of the filter to ensure dust removal efficiency. The catalytic functional particles are evenly dispersed on the inner wall fibers of the ceramic tube to avoid heavy metal and alkali metal poisoning and ensure Catalyst life on ceramic fiber filters. Therefore, it has the advantages of lower filtration resistance, higher dust removal efficiency, and stronger denitrification efficiency. It can remove two or more pollutants in flue gas at the same time, greatly shortening the process flow, improving treatment efficiency, and reducing investment and operating costs.
Compared with traditional commercial ceramic catalytic filter tubes, three-dimensional graded ceramic catalytic filter tubes have the following characteristics:
(1) High dust filtration accuracy: The outer layer of the filter tube retains a dense layer, and the dust removal filtration accuracy is 99. Emission concentrations exceeding 9% can achieve ultra-low emissions.
(2) Low smoke filtration resistance: the catalytic active ingredients are on the surface and pores of the ceramic fiber without agglomeration, ensuring the porosity and air permeability of the filter tube.
(3) Higher denitrification performance: the catalytic active components are highly dispersed, the contact area is much larger than that of traditional SCR catalysts, and the active components are fully utilized. When the temperature window is 230 to 420°C, the denitrification efficiency can reach more than 96%, satisfying a wide temperature range Range of NOx and particulate matter emission reduction needs.
(4) Longer service life: Functional catalytic particles are evenly distributed in the inner layer of the filter tube to avoid poisoning by heavy alkali metals and greatly extend the service life, up to more than 5 years.
(5) Wide range of technical applications: without changing the original dust removal process and equipment, it has strong adaptability to different load changes in industrial kilns.