Catalytic　distillation　is　an　effective　and　important　technology　for　low-temperature　dehydrogenation　of　perhydrobenzyltoluene　(H12-BT).　However,　current　researches　have　unfortunately　failed　to　comprehensively　understand　the　reaction　and　separation　processes,　hindering　the　broader　application　of　catalytic　distillation　dehydrogenation　technology.　Therefore,　in　the　study,　a　comprehensive　dehydrogenation　reaction　kinetic　model　that　accounts　for　the　influence　of　the　intermediate　H6-BT　was　established　firstly.　Subsequently,　the　vapor-liquid　equilibrium　data　for　the　binary　systems　H12-BT　+　H6-BT　and　H6-BT　+　H0-BT　was　estimated　by　utilizing　the　UNIFAC　model,　so　as　to　obtain　the　azeotropes.　By　developing　a　modified　catalytic　distillation　model,　the　catalytic　distillation　dehydrogenation　process　was　examined.　Our　exploration　revealed　the　existence　of　an　optimal　degree　of　dehydrogenation　value,　namely　0.8,　within　the　catalytic　distillation　dehydrogenation　process,　yielding　an　approximate　23.8　%　reduction　in　unit　H2　production　cost　in　comparison　to　the　fully　dehydrogenation　case.　Our　findings　contribute　valuable　insights　that　have　the　potential　to　promote　the　overall　development　of　the　hydrogen　energy　economy.