REFINING METHOD FOR AMMONIA

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. so...

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Bibliographic Details
Main Authors YASUDA MASAKO, MURANAGA NAOKI, IWATA KEIICHI, SHIMADA TAKASHI
Format Patent
LanguageEnglish
Published 19.04.1994
Edition5
Subjects
AMMONIA
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS
COMPOUNDS THEREOF
CYANOGEN
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary: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 deg.C, the precipitated material is calcined at >=300 deg.C and pulverized to obtain a catalyst essentially consisting of nickel contained at 5-95wt.% and having 10-300m /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/cm abs and at <=200 deg.C, an ammonia in which CO and CO2 content is <=0.1ppm is obtained.
Bibliography:Application Number: JP19920254619