The Petroleum coke is a byproduct of refining heavy petroleum residues and is recognized for its high carbon content and energy value. It is formed during the thermal cracking of residual oil in delayed coker units, producing a solid, black, and brittle material. Petcoke’s high calorific value makes it a widely used fuel in cement kilns, power generation, and industrial heating systems. It is also a key raw material in metallurgical industries, especially in aluminum and steel production, where calcined petroleum coke is used to make electrodes and anodes. Fuel-grade petcoke is consumed directly for energy, while calcined coke undergoes further processing to remove moisture and volatile matter, enhancing purity and conductivity. The sulfur content and ash levels vary depending on crude oil quality, influencing environmental emissions and performance. Despite environmental challenges, petcoke remains a cost-effective and reliable source of energy and industrial carbon. Its applications extend to chemical industries, where it serves as feedstock for carbon black, graphite, and other derivatives. With consistent availability, high energy content, and wide-ranging applications, petroleum coke is a crucial product bridging crude oil refining with multiple industrial sectors.