Numerical study of heat transfer characteristics on Macchi package boiler (63-B4002) superheater tube in utility of PIM-2

Macchi Package Boiler is the main unit in PT Pupuk Iskandar Muda, which serves as a source of steam generators with superheater tubes as heat exchanger. The boiler system fails on the superheated tube so that the production of urea becomes disturbed. Therefore, an investigation based on thermal analysis is needed to analyze the cause of tube superheater package boiler failure. Linear one-dimensional mathematical approach used in this study is in an attempt to observe the behavior of heat transfer occurs through changes in inlet and outlet temperature and heat transfer rate. Completion numerically performed using the approach of finite difference method or finite difference method, and simulated using the software MatLab 2016a to facilitate observation of behavior change heat transfer system superheater in the form of three-dimensional graphics and two-dimensional graph. The simulation results show that the temperature will increase proportional to the length of the primary superheater and the secondary superheater and the temperature tends to decrease in the desuperheater. Saturated vapor entering the primary super heater will be superheated steam on the secondary super heater with a pressure 44 kg/cm²G and a temperature of 390°C.