High Capacity Process on Liquid Catalytic Isotopic Exchange of H2O-H2 with Pt-SDB as Cylindrical Catalyst
Abstract: The process conditions are experimentally studied for H2O-H2 liquid catalytic isotopic exchange with Pt-SDB as hydrophobic cylindrical catalyst, and hydrodynamic experiments are conducted for obtaining the correlating expressions of pressure drop △P/Z, flooding gas velocity uF. The results indicate that the Pt-SDB cylindrical catalyst with little catalytic activity has a number of advantages, including low pressure drop, higher flooding gas velocity and stable liquid holdup. The height of transfer unit (HTU) is also changed to be higher with the increasing of the air velocity in empty tower and the packing dimension. The efficiency of catalytic exchange reaction is high with a packing ratio of 1:1 of hydrophilic packing and hydrophobic catalyst in separated layers. The HTU decreases with increasing operating temperature, but the trend is slowed down when the temperature is above 70˚C. The HTU increases with increasing hydrogen flow rate and decreases with increasing diluted heavy water flow rate. When the air velocity of empty tower is 0.3 m/s, the process capacity is higher.
文章引用: 赵松 , 胡石林 , 阮皓 , 张丽 (2016) 柱形Pt-SDB催化剂的水–氢交换高处理量工艺。 核科学与技术， 4， 50-61. doi: 10.12677/NST.2016.42007
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