Rapid reconstruction of temperature field of coke chamber based on POD-BP and Tikhonov method

Abstract

As the key equipment of delayed coking unit, the coking chamber generally uses the cycle heating and cooling process to produce products. Due to the large temperature rise and fall process of the cycle, the coke chamber runs under harsh thermal conditions for a long time, and the thermal stress generated by temperature fluctuation is one of the main reasons for the failure of the coke chamber structure. However, the working state of coking chamber is complex, and the traditional numerical method cannot realize timely monitoring, so it is of great practical significance to study the new method to realize timely monitoring. In this paper, POD-BP reduced order models under the second and third thermal boundary conditions are established by studying the coke chamber in the production process. The models are applied to the inversion of the spatial heat flux distribution and the calculation of the temperature field of the coke chamber, which greatly improves the calculation speed of the inversion. It has been proved that the proposed method has the advantages of good real-time performance, high precision, strong anti-interference ability and strong operability, which provides a detection method for the real-time reconstruction of temperature field and production state of coke chamber.