Device and method for online measurement and calibration of heat content of high-temperature pyrolysis coal gas

The invention belongs to the field of measurement and calibration of heat content of high-temperature pyrolysis coal gases, and particularly relates to a device and a method for online measurement andcalibration of the heat content of a high-temperature pyrolysis coal gas. Part of the high-temperature coal gas passes through a quartz sand filter, a flue gas flow meter and heat exchange equipmentwhich is manufactured by arranging a temperature measuring element, a water system, a heat preservation system, a water side heat exchange element in parallel and the like, the heat exchange amount ofthe coal gas and the water is obtained according to a formula Q = Cm delta t, and the heat contained in all the coal gas is obtained according to the coal gas flow and heat data. According to the method, the heat of the high-temperature coal gas is accurately measured, clean and efficient gradient utilization of the heat is achieved, the heat utilization rate is maximized, and heat utilization equipment cannot be damaged d