1500℃ robust protection, assisting in efficient emission reduction of exhaust aftertreatment systems

China's air pollution control efforts face unprecedented challenges. Controlling exhaust pollution from mobile and non-road mobile machinery is crucial for reducing NOx, PM2.5, and other pollutants in the air. Currently, the mainstream technological approach is to add an exhaust aftertreatment system on top of reducing original engine emissions, treating pollutants through gas-solid catalytic reactions. The core of the exhaust aftertreatment system is the catalytic unit, which includes a ceramic carrier, a gasket, and a metal shell. The gasket is usually placed in the gap between the ceramic carrier and the metal shell, mainly serving to fix, seal, and insulate. The gasket is typically an inorganic fiber-based material, requiring sufficient fixing force provided by friction between room temperature and the exhaust temperature of the internal combustion engine.

Polycrystalline alumina fiber is one of the commonly used inorganic fibers for gaskets.

Introduction to Aladdin Polycrystalline Alumina Fiber Needled Blanket

Aladdin polycrystalline alumina fiber needled blanket is independently developed and produced, made solely of high-performance alumina fibers, containing no binders or other components. It can withstand long-term operating temperatures up to 1400-1500℃. The enhanced double-sided needle-punching process improves the fiber interlacing degree and the blanket's anti-delamination properties, maintaining its softness while providing excellent tensile strength.

Product Features

★Low slag content, pure white color, high raw material purity

★High temperature resistance, good high-temperature stability

★Low thermal conductivity, minimal thermal shrinkage at high temperatures

★Chemically stable, strong corrosion resistance

★Uniform fiber diameter, high tensile strength

Guardian of the Catalytic Unit's "Heart"

The polycrystalline alumina needled blanket, with a long-term operating temperature of 1400-1500℃, effectively isolates the metal shell from thermal damage caused by high-temperature exhaust gases. It combines softness and tensile strength while using friction to fix the carrier, preventing the catalyst layer from loosening. Furthermore, addressing the instantaneous high temperature of 1600℃ during DPF regeneration, the thermal stress buffering capacity of the polycrystalline alumina needled blanket reduces the ceramic carrier breakage rate from 12% to 0.5%, and extends the maintenance cycle from 500 hours to 8000 hours.

Aladdin Supports Green Transportation

The superior performance of the polycrystalline alumina needled blanket extends the catalytic unit maintenance cycle to 8000 hours and controls the ceramic carrier breakage rate below 0.5%. It provides core assurance for domestically produced mobile machinery to meet the China VI b emission standard and also facilitates the implementation of the China IV emission standard for non-road machinery, significantly reducing NOx and PM2.5 emissions.

Driven by the "dual-carbon" strategy, Aladdin's polycrystalline alumina needled blanket, as a new material combining high-temperature stability and environmental benefits, will continue to provide key material support for winning the battle for blue skies, promoting my country's air pollution control towards a more refined and long-term approach.