“A Numerical Investigation Into The Thermal Distribution In A Steam Cracking Furnace” Optimal Chemicals (M) Sdn. Bhd. Case Study

This project is about a Radiant Tube Coil bending problem inside a Furnace Firebox. This Radiant Tube Coil Bend problem study is crucial because it may affect the reliability life of the radiant tube coil inside the furnace. However, based on the RCI, there are assumptions made that may cause this failure such as non uniform heat distribution inside the firebox, malfunction of the counterweight system for the radiant coil, or too much heat supply

Experimental and numerical studies of porous media combustion in micro burner

Porous media combustion has been key point of interest for researchers from past couple of decades due its numerous advantages, such as remarkable low emission levels without compromising thermal efficiency. In this present work, dual layered micro burner was built with predefined thickness of reaction and preheat layer. Reaction layer was made up of alumina (discrete type) while preheat layer porcelain (foam type) material. Burner was successfully built to undergo both surface and submerged flames. A concept of equivalences ratio was enabled since its premixed combustion with natural air as one of the inlet along with butane. Trials were not just restricted at stoichiometric ratio but also carried out up to ultra-lean region. Additionally, numerical simulation was performed using commercially available computational fluid dynamics package so that porous media combustion phenomenon can be better analyzed and predicted. Finally, Thermal efficiency was calculated at critical equivalence ratios and emission parameters such as NOx and CO was continuously monitored which were under controlled limits

Investigation of micro burner performance during porous media combustion for surface and submerged flames

Porous media combustion is considered to be one of the popular choice due to its tremendous advantages. Such type of combustion liberates not only super stable flame but also maintains emissions parameters below thresholds level. Present study incorporates reaction and preheat layer with discrete and foam type of materials respectively. Burner was made to run in ultra-lean mode. Optimum equivalence ratio was found out to be 0.7 for surface flame, while 0.6 during submerged flame condition. Maximum thermal efficiency was noted to be 81%. Finally, emissions parameters where recorded continuously to measure NOx and CO, which were under global limits