... furnace is well over 150,000 mta.Pyrolysis heater radiant coil characteristics(single heater range)Number of coils 2-176Coil length ... ,m9-80Inside coil dimeter,mm30-200Process gs outlet temperature,°C750-950Clean coil metal temperature,°C900-1,080Maximum ... residence time,s0.1-0.6Coil outlet pressure,KPa150-275Clen coil pressure drop,KPa10-200Ethylene capacity,mta20,000-250,000 ...