Device and method for measuring equilibrium constant of chemical reaction

The invention discloses a chemical reaction equilibrium constant measuring device and method, and the measuring device comprises a raw material gas flow regulating valve, an inert carrier gas flow regulating valve, a flowmeter, a preheater, a thermometer, a mixer, an electric control heating or cooling sleeve, a reaction tube reaction section, a reaction tube collection section, a heat exchange cooler, a tail gas absorption device and an induced draft fan. The input ends of the feed gas and inert carrier gas flow regulating valves are respectively connected with reaction feed gas and inert carrier gas, the output ends of the feed gas and inert carrier gas flow regulating valves are respectively connected with the input end of the preheater through the flow meters, and the output end of the preheater is connected with the input end of the mixer through the thermometer and the flow meter in sequence; the output end of the mixer is sequentially connected with the reaction tube reaction section, the reaction tube