Title:
REFINING METHOD FOR AMMONIA
Document Type and Number:
Japanese Patent JP3410121
Kind Code:
B2
Abstract:
PURPOSE: To remove CO and CO2 so that their concentration may be lowered to an ultra-low concentration by allowing a crude ammonia to contact to a catalyst essentially consisting of Ni.
CONSTITUTION: A carrier powder such as kieselguhr, alumina, silica alumina, etc., is dispersed in nickel salt aq. solution, nickel component is precipitated on the carrier by adding an alkali, and after dried at 120-150°C, the precipitated material is calcined at ≥300°C and pulverized to obtain a catalyst essentially consisting of nickel contained at 5-95wt.% and having 10-300m2/g BET specific surface area. In case when the catalyst is contacted with a crude ammonia at a condition of ≤100m/sec linear velocity in an empty cylinder, ≤20kg/cm2 abs and at ≤200°C, an ammonia in which CO and CO2 content is ≤0.1ppm is obtained.
Inventors:
Takashi Shimada
Masako Yasuda
Keiichi Iwata
Naoki Muranaga
Masako Yasuda
Keiichi Iwata
Naoki Muranaga
Application Number:
JP25461992A
Publication Date:
May 26, 2003
Filing Date:
September 24, 1992
Export Citation:
Assignee:
Japan Pionics Co., Ltd.
International Classes:
B01D53/94; B01J23/755; C01C1/02; (IPC1-7): C01C1/02; B01J23/755
Domestic Patent References:
| JP4292413A | ||||
| JP55124538A |
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