Development of a Method for Monitoring the Process of Heating The Lining of High-Temperature Units

The paper presents the results of the development of a method for monitoring the thermal condition of the lining of a high-temperature unit. The developed method makes it possible to obtain temperature values along the lining section during heating and cooling of the unit. Based on a comparison of the magnitude of the largest temperature difference across the cross-section and the maximum temperature difference at which the resulting thermal stresses do not exceed the tensile strength of the refractory materials used, the rate of temperature change of the lining of a high-temperature unit is estimated. This makes it possible to conduct non-stationary thermal processes at the highest possible speeds without calculating the values of temperature stresses. The calculation of temperature fields in the lining is based on data on the temperature of the outer surface of the lining and the temperature of the process material. The developed method does not imply a violation of the integrity of the lining when installing temperature sensors in them. The method involves using an accessible mathematical model, which can be implemented in any development environment, including the Excel program.