System technological design characteristic This system uses the heating system which heats up continuously, the furnace bottom uses the evaporative cooling generally. The stove tail pushes the steel stove side tapping or the stove tail pushes the steel stove end tapping. Use of air preheater preheating. Fuel for the producer gas. System is divided into six parts: heating systems, combustion systems, for Wind systems, exhaust systems, temperature control systems, preheat system in these six systems constitute an organic whole. Main technical parameters and the use of equipment performance: Project name: billets for rolling before the furnace a) production: users with the workpiece Size: users b) types of fuel: hot dirty parts producer gas heating temperature :1200-1250 After the operation of equipment to ensure that the following results: 1, metric tons coal consumption :60-90 kg workpiece temperature :1200-1250 2, the working temperature :1200-1250 3, production: to meet user requirements in processing the workpiece 4, to meet part of the process 5, environmental indicators: Dust concentration of less than: 100 Mg/Nm3 black smoke: less than a Ringelmann