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. 27, 2015
Filed:
May. 19, 2011
Koji Takamatsu, Takaishi, JP;
Satoshi Kato, Kashima, JP;
Takeshi Fukuda, Kurume, JP;
Tetsuya Nakano, Sakai, JP;
Masaaki Sasaki, Ichihara, JP;
Koji Takamatsu, Takaishi, JP;
Satoshi Kato, Kashima, JP;
Takeshi Fukuda, Kurume, JP;
Tetsuya Nakano, Sakai, JP;
Masaaki Sasaki, Ichihara, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A method for producing carbamate including a urea production step; a carbamate-forming step; an ammonia separation step of absorbing the gas with water in the presence of carbonate to produce a gas absorption water, and separating ammonia; an aqueous alcohol solution separation step of separating an aqueous alcohol solution from the gas absorption water; an ammonia/carbon dioxide separation step of separating carbon dioxide gas from the aqueous ammonia solution in the gas absorption water from which the aqueous alcohol solution is separated; an aqueous ammonia solution reusing step of mixing the aqueous ammonia solution and carbonate with the water to be used for production of the gas absorption water.