Anti coking: Extend the de-coke period by 2-5 times and reduce the number of de-coke cycles.
Antioxidant: It can completely resist oxidation up to 1200 ℃.
Energy conservation, cost reduction, and efficiency improvement: It can save 600 yuan/year for the domestic ethylene industry and meet the national emission reduction standard of 6 million tons/year of coal.
Welding firstly: After welding and grinding, the straight pipe is bentinto U shape and S shape.
Bending integrally: As for the moderate long pipe, the whole pipesection directly be bent U and S shape.
Reduing the coking of the furnace tube: The welding seam ofthe elbow disappears or the welding root is cleaned up neatly, whichsolves the problem of coking caused by the failure grinding of the root ofthe welding seam between the U-shaped tube and the S-shaped tube.
The NH25-35GR long-life new material redefines the performance boundary of furnace tubes. Its excellent high-temperature strength not only endows the equipment with the toughness and endurance to withstand temperatures up to 1100 ℃, but also brings innovation to the design - by optimizing the wall thickness, it achieves efficient heat conduction and fuel savings. Ultimately, on the same platform, it can help you increase the operating temperature by 15 ℃, unlocking higher production capacity and achieving a dual leap in efficiency and output.
Performance advantages: NH2829 high-temperature resistant new material has excellent comprehensive performance through solid solution strengthening and second phase particle strengthening, with good long-term microstructure and performance stability. Its strength is superior to Cr28Ni48W5 alloy, and its yield strength at room temperature is more than 20% higher than Cr28Ni48W5 alloy; The tensile strength at 1100 ℃ is more than 35% higher than that of Cr28Ni48W5 alloy, the plasticity is similar to that of Cr28Ni48W5 alloy, and the high-temperature durability is better than that of Cr28Ni48W5 alloy.
High heat transfer efficiency;
Fast heating speed;
Excellent cold and hot fatigue performance;
Performance advantages: NH2829 alloy has excellent comprehensive performance through solid solution strengthening and second phase particle strengthening, with good long-term microstructure and performance stability. Its strength is superior to Cr28Ni48W5 alloy, and its yield strength at room temperature is more than 20% higher than Cr28Ni48W5 alloy; The tensile strength at 1100 ℃ is more than 35% higher than that of Cr28Ni48W5 alloy, the plasticity is similar to that of Cr28Ni48W5 alloy, and the high-temperature durability is better than that of Cr28Ni48W5 alloy.
Strong applicability: natural gas, coke oven gas, mixed gas;
Flue gas recirculation: reduce NOx and improve combustion efficiency;
Graded combustion: reduce the surface power of the initial stage of the radiation tube and improve the service life of the radiation tube;
Project client: Ultra long furnace rollers manufactured for Asahi Glass in Japan
Furnace roll diameter: 400 diameter
Roll surface size: Roll surface length 8000mm
Total length of furnace rollers: The total length of furnace rollers reaches 9375mm, which is currently the longest furnace roller in the world
