| Special Focus PROCESS OPTIMIZATION Throughout the history of the hydrocarbon processing industry, engineers have constantly looked for ways to optimize plant operations and processes. Through innovative thinking and engineering prowess, new processing technologies are increasing profitability for refinery and petrochemical plant operators. The June Special Focus explores innovative methods and programs to ensure that processing facilities operate at their optimum levels of safety and efficiency. Photo: The Neste Oil's Rotterdam refinery produces premium-quality NExBTL renewable diesel, one of the cleanest and highest-quality renewable diesels on the market. Photo courtesy of Neste Oil Corp.