Abstract: According to the monitoring requirements of petrochemical fired heaters in the operation process, a two-dimensional temperature field acquisition device is installed on the combustion test heater of a company, and the collected temperature data and the thermal imaging map are analyzed and studied. Based on the dual attributes of temperature and image with two-dimensional temperature field information, this paper integrates the analysis means of both temperature and image dimensions, fully exploits the application value of furnace chamber temperature data, and realizes the functions of three-dimensional furnace chamber temperature field construction, flame combustion diagnosis, flame out alarm, furnace tube over-temperature hot spot and deformation monitoring, which provides more technical means to monitor the normal operation of heaters.

Key words: heater, temperature field, visual monitoring, combustion diagnosis