Refrigeration – Processes – Circulating external gas
Patent
1980-07-08
1982-07-06
Yudkoff, Norman
Refrigeration
Processes
Circulating external gas
62 31, 62 40, 62 28, F25J 302
Patent
active
043381081
ABSTRACT:
Argon is recovered from a tail gas stream remaining after recovery of hydrogen values from ammonia synthesis purge gas. In a first step, tail gas is cooled, preferably in a first heat exchanger then a refluxing exchanger, to separate a condensate containing methane, argon and some nitrogen and uncondensed gas containing substantially all residual hydrogen and some nitrogen. The condensate, after expansion, is fed into a first distillation column where methane is condensed, the overhead nitrogen and argon product being fed to a second column where argon product is condensed. The cold requirements of the process and heat for reboil and cooling for reflux for the columns are provided by an open cycle supplied with gaseous nitrogen from the second column as heat transfer fluid. Cooling for the refluxing exchanger is provided by an evaporating coolant comprising transfer fluid combined with the uncondensed nitrogen-hydrogen gas after expansion thereof.
REFERENCES:
patent: 2960476 (1960-11-01), DuBois Eastman et al.
patent: 2990690 (1961-07-01), Martin
patent: 2993342 (1961-07-01), Koble
patent: 3037359 (1962-06-01), Knapp
patent: 3805537 (1974-04-01), Forg et al.
Argon Recovery: Aid to Ammonia Economies, Journal of Chemical Engineering, 16 Jul. 1979, pp. 62, 63.
Ashton Gregory J.
Isalski Wieslaw H.
Petrocarbon Developments Ltd.
Yudkoff Norman
LandOfFree
Process for the recovery of argon does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the recovery of argon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the recovery of argon will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2166954