METHOD AND APPARATUS FOR GENERATING HYDROGEN FROM FORMIC ACID

• US 20170197828A1
• Filed: 01/27/2015
• Published: 07/13/2017
• Est. Priority Date: 07/18/2014
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: KIM, Jin Young, KIM, Yeong Cheon, HAN, Jonghee, LIM, Tae Hoon, YOON, Sung Pil, KIM, Hyoung-Juhn, OH, Taekhyun, CHOI, Sun-Hee, HAM, Hyung Chul, YOON, Chang Won, NAM, Suk Woo
• Granted Patent: US 10,710,877 B2
• Time in Patent Office: Days
• CPC Class Codes: B01D 5/00 Condensation of vapours; Recovering volatile solvents by condensation B01D8/00 takes precedence; condensers F28B
• CPC Class Codes: B01D 5/0057 in combination with other processes
• CPC Class Codes: B01D 53/265 by refrigeration (condensation)
• CPC Class Codes: B01J 2208/00168 with heat exchange elements outside the bed of solid particles
• CPC Class Codes: B01J 2208/0053 Controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
• CPC Class Codes: B01J 2208/00548 Flow
• CPC Class Codes: B01J 2208/00893 Feeding means for the reactants
• CPC Class Codes: B01J 2219/00011 Laboratory-scale plants
• CPC Class Codes: B01J 23/44 Palladium
• CPC Class Codes: B01J 27/24 Nitrogen compounds
• CPC Class Codes: B01J 27/26 Cyanides
• CPC Class Codes: B01J 35/19 Catalysts containing parts with different compositions
• CPC Class Codes: B01J 37/082 Decomposition and pyrolysis
• CPC Class Codes: B01J 37/18 with gases containing free hydrogen
• CPC Class Codes: B01J 8/00 Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
• CPC Class Codes: B01J 8/20 with liquid as a fluidising medium
• CPC Class Codes: C01B 2203/0277 containing a catalytic decomposition step
• CPC Class Codes: C01B 2203/0495 the impurity being water
• CPC Class Codes: C01B 2203/1064 Platinum group metal catalysts
• CPC Class Codes: C01B 2203/1211 Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
• CPC Class Codes: C01B 3/22 : by decomposition of gaseous or liquid organic compounds C01B3/0005 takes precedence ; coking liquid carbonaceous materials C10B55/00

Abstract

The present invention provides a hydrogen generating apparatus and a hydrogen generating method, wherein the hydrogen generating apparatus generates hydrogen by dehydrating formic acid, and comprises: a reactor for containing water and a heterogeneous catalyst; a formic acid feeder for feeding formic acid into the reactor; and a moisture remover for removing moisture generated from the reactor.

Claims

1. An apparatus for generating hydrogen by dehydrogenation of a formic acid, comprising:

a reactor containing water and a heterogeneous catalyst;

a formic acid feeder configured to supply a formic acid into the reactor; and

a moisture remover configured to remove moisture generated at the reactor.

2. The apparatus for generating hydrogen according to claim 1, further comprising:

a freezer configured to condense the moisture removed by the moisture remover and supply the condensed moisture to the reactor.

3. The apparatus for generating hydrogen according to claim 1,

wherein the heterogeneous catalyst is a solid catalyst.

4. The apparatus for generating hydrogen according to claim 1,

wherein the formic acid supplied to the reactor by the formic acid feeder is an aqueous formic acid solution with a concentration of 70 to 99.9 wt %.

5. The apparatus for generating hydrogen according to claim 1,

wherein the formic acid feeder supplies the formic acid to the reactor at a feed rate of 0.1 mL to 2.2 L per minute.

6. The apparatus for generating hydrogen according to claim 1,

wherein the water and the formic acid supplied to the reactor by the formic acid feeder are mixed at the reactor to form an aqueous formic acid solution with a concentration of 20 to 90 wt %.

7. A method for generating hydrogen by dehydrogenation of a formic acid, comprising,

adding a formic acid to a mixture of water and a heterogeneous catalyst to perform a dehydrogenation reaction.

8. The method for generating hydrogen according to claim 7, further comprising:

removing a moisture generated at the dehydrogenation reaction.

9. The method for generating hydrogen according to claim 8, further comprising:

condensing the moisture removed in the moisture removing step and using the condensed moisture as water for the dehydrogenation reaction.

10. The method for generating hydrogen according to claim 7,

wherein the formic acid is an aqueous formic acid solution with a concentration of 70 to 99.9 wt %.

11. The method for generating hydrogen according to claim 7,

wherein the formic acid is added at a feed rate of 0.1 mL to 2.2 L per minute.

12. The method for generating hydrogen according to claim 7,

wherein the water and the formic acid are mixed to form an aqueous formic acid solution with a concentration of 20 to 90 wt %.