Ammonia decomposition apparatus and system and hydrogen production method

US11084012B2 · kind B2 · utility

Assignee

• National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University · CN

Inventors

• Lilong Jiang · Beijing, CN
• Yu Luo · Beijing, CN
• Chongqi Chen · Fuzhou, CN
• Xingyi Lin · Fuzhou, CN
• Jianxin Lin · Fuzhou, CN

Key dates

• Filing date: Mar 5, 2020
• Grant date: Aug 10, 2021
• Expiry date: Mar 29, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An ammonia decomposition apparatus comprises a casing, a heating zone, a heat exchange zone, a reaction section and a heat exchange coil. The heat exchange coil is spirally wound on an outer wall of the reaction section to efficiently heat ammonia gas. The reaction section has a first reaction zone and a second reaction zone communicated successively, the ammonia gas decomposed into a nitrogen-hydrogen mixture after entering the first reaction zone, with the second reaction zone decomposing for the second time the residual ammonia gas in the nitrogen-hydrogen mixture produced in the first reaction zone, so that the ammonia gas is decomposed more thoroughly. The conversion rate of ammonia gas can reach 99.9% or more, and the residual amount of ammonia gas in the nitrogen-hydrogen mixture can be less than 1000 ppm.