Chemistry of inorganic compounds – Nitrogen or compound thereof – Ammonia or ammonium hydroxide
Reexamination Certificate
2002-02-26
2009-06-16
Langel, Wayne (Department: 1793)
Chemistry of inorganic compounds
Nitrogen or compound thereof
Ammonia or ammonium hydroxide
C252S375000, C423S360000, C564S069000
Reexamination Certificate
active
07547428
ABSTRACT:
Ammonia is catalytically produced from a nitrogen-hydrogen mixture. First of all, a vaporous feed mixture, which comprises 30 to 60 vol-% methanol and 40 to 70 vol-% steam and has a volume ratio steam:methanol of 1 to 3, is passed through at least one bed of a breakdown catalyst at pressures in the range from 30 to 200 bar, the temperatures in the catalyst bed lying in the range from 200 to 500° C. From the catalyst bed, a first gas mixture is withdrawn, which, calculated dry, comprises 40 to 80 vol-% H2and 10 to 30 vol-% CO2. The first gas mixture is cooled, CO2is removed in a gas cleaning, and a second gas mixture is generated, which comprises at least 95 vol-% nitrogen and hydrogen, and which is supplied as synthesis gas to an ammonia synthesis for the catalytic production of ammonia.
REFERENCES:
patent: 2002/0098132 (2002-07-01), Vidalin
patent: 2003/0099593 (2003-05-01), Cortright et al.
patent: 20 07 441 (1971-09-01), None
patent: 0 303 032 (1989-02-01), None
patent: 0 307 983 (1989-03-01), None
patent: 0 311 932 (1989-04-01), None
patent: 0 931 762 (1999-07-01), None
Ullmann's Encyclopedia of Industrial Chemistry, 5thedition, vol. A2, pp. 143-215.
Ullmann's Encyclopedia of Industrial Chemistry, 5thedition, vol. A27, pp. 333-350.
Patent Abstracts of Japan, vol. 015, No. 457 (M-1181) Nov. 20, 1991 & JP 03 194111 A (Shinnenshiyou Syst Kenkyusho:KK) Aug. 23, 1991.
Langel Wayne
MG Technologies AG
Norris McLaughlin & Marcus PA
LandOfFree
Method for producing ammonia from methanol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for producing ammonia from methanol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing ammonia from methanol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4131494