When PBF Energy Inc . scooped up a refinery from Exxon Mobil Corp. on the Mississippi River in 2015, it wasted no time sprucing up the plant with an eye toward quickly resuming lucrative fuel exports. Within three months, PBF was ready to load its first tanker for shipment abroad. By late last year, the New Jersey-based company was exporting 22,000 barrels a day of fuel, or 16 percent of that refinery’s output. Now, it wants to boost that to almost 25 percent. PBF isn’t alone in this push. From major producers such as Chevron Corp . to specialized refiners including Valero Energy Corp ., the U.S. refining industry has shifted its game over the last five years, taking advantage of gaps left by struggling refiners in Latin America, Africa and Asia. Along the way, it’s transforming what had long been a largely domestic business into a new global […]