Cracking Tubes (Cracking Coils)

About this product

Kubota's Pursuit "Cracking Coil" -- A Vital Component in the Manufacture of Raw Materials for Plastics such as Ethylene and Propylene Petrochemical plants produce ethylene and propylene, which are the raw materials for plastics, through thermal cracking of hydrocarbons such as ethane and naphtha under high temperatures. Thermal cracking furnace A cracking coil consists of cracking tubes and fittings. With the coil set in a thermal cracking furnace, hydrocarbon feedstock and steam are supplied and brought up to the cracking temperature range (800-900°C) with heat supplied from outside of the coil. In the process, cracking tubes are exposed to high temperatures of up to about 1100°C. Because they are used under such extreme conditions, cracking coils are required to have high heat resistance and thermal efficiency. Thermal Cracking Furnace New Technology for Higher Carburization Resistance and Thermal Efficiency Coking (carbon deposition caused by free radical carbons) on the inside surface of a cracking coil, occurring as a result of thermal cracking of hydrocarbons, increases pressure drop in the cracking coil and lowers the heat transfer efficiency, eventually causing the reduction in the operation efficiency of a thermal cracking furnace. Coking can also give rise to a phenomenon called "carburization" (where the base metal absorbs carbon) which shortens tube life. Kubota developed high-performance cracking tubes based on our own unique concepts, as well as based on the experience and technological expertise in materials development and casting that we had gained through supplying key industrial steel casting products over many years. These tubes offer dramatically increased operation efficiency of thermal cracking furnaces while realizing superior anti-carburization performance. Kubota’s proprietary high-performance cracking tubes improve the operating efficiency of customers’ facilities, helping to reduce fuel consumption and CO₂ emissions while minimizing environmental impact. By supporting customers’ energy-efficiency and decarbonization initiatives, Kubota helps them achieve their sustainability goals and contributes to a more sustainable society. We Deliver High-quality Cracking Tubes Worldwide, from North America, and Japan Kubota’s global sales network works closely with its manufacturing bases in Japan and Canada to respond promptly to customer needs around the world. High-quality Kubota-branded products are manufactured at both locations and delivered to customers globally. Leveraging its global production network and flexible supply system, Kubota ensures a stable and reliable supply of products worldwide. History 1937 Manufacture of general steel castings commenced in Taisho-ku, Osaka City 1952 First centrifugal steel casting technology in Japan developed; industrial production of centrifugal cast steel pipes commenced 1990 Kubota Metal Corporation (now Kubota Materials Canada Corporation) founded in Ontario, Canada