The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2014
Filed:
Dec. 22, 2009
Norihiko Nakamura, Mishima, JP;
Haruyuki Nakanishi, Susono, JP;
Hidekazu Arikawa, Susono, JP;
Susumu Hikazudani, Takatsuki, JP;
Chikashi Inazumi, Kyoto, JP;
Norihiko Nakamura, Mishima, JP;
Haruyuki Nakanishi, Susono, JP;
Hidekazu Arikawa, Susono, JP;
Susumu Hikazudani, Takatsuki, JP;
Chikashi Inazumi, Kyoto, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hitachi Zosen Corporation, Osaka, JP;
Abstract
The invention provides a process for efficient synthesis of ammonia. The process includes a water-splitting step in which water is decomposed to obtain a first source gas comprising hydrogen and oxygen, a first oxygen removal step in which the oxygen contained in the first source gas is at least partially separated and removed by an oxygen separating membrane or hydrogen separating membrane to obtain a second source gas having a lower oxygen concentration than the first source gas, a second oxygen removal step in which the oxygen in the second source gas is reacted with hydrogen to produce water for removal, or is adsorbed onto an adsorption medium for removal, to obtain a third source gas having a lower oxygen concentration than the second source gas, and an ammonia synthesis step in which the hydrogen in the third source gas is reacted with nitrogen to synthesize ammonia.