Philadelphia’s convention industry is slated to bring 150,000 more visitors to the city this year than in 2021, increasing associated hotel room nights nearly four-fold in “a huge spike” as the sector ramps up, Pennsylvania Convention Center CEO John McNichol said at the Philadelphia Business Journal’s annual Economic Forecast event. About 60 events are on the books for 2022, making for “a pretty strong” year at the 2 million-square-foot Center City facility.