| abstract |
The present invention provides a hydrogen production method capable of improving the hydrogen separation efficiency while achieving a high dehydrogenation conversion rate under low pressure conditions, and greatly improving the hydrogen recovery rate compared to the prior art. . SOLUTION: A dehydrogenation reaction of an aromatic hydrocarbon hydride is carried out in a dehydrogenation reactor 2 having a catalyst layer, and hydrogen is removed from the dehydrogenation reaction product by a hydrogen separation device 3 having a hydrogen separation membrane. In the hydrogen production method to be separated, a hydrogen production method in which the temperature of the hydrogen separation membrane in the hydrogen separation device 3 is 10 to 100 ° C. higher than the average temperature of the catalyst layer in the dehydrogenation reactor 2. is there. [Selection] Figure 1 |