millisecond furnace
英[ˈmiliˌsekənd ˈfə:nis]美[ˌmɪlɪˈsɛkənd ˈfɚnɪs]
A Millisecond furnace is a device used for cracking naphtha into ethylene, by extremely short (50 to 100 millisecond) exposure to temperatures of about 900 degrees Celsius, followed by a rapid quenching below 750 degrees Celsius.