Blast furnace gas is also called blast furnace top gas. The main components are CO, CO2, H2, O2, CH4. Analysis of their concentration values is useful for judging and adjusting the energy conversion of the blast furnace, the cooling system, the distribution of the furnace top and the overall furnace conditions. Important role. The blast furnace gas analysis system consists of a sampling unit, a sample pretreatment unit, an instrument analysis unit, an automation control unit, and a calibration unit, all of which are combined and connected to the analysis system cabinet. The system adopts high-quality analytical instruments and pipe fittings, advanced and reliable technology, with the characteristics of long maintenance period, low operating cost and simple operation.