Fractional condensation of natural gas
Abstract
Abstract A SYSTEM FOR THE LIQUEFACTION OF NATURAL GAS WHEREIN NITROGEN IS REMOVED FROM THE GAS BY RECTIFICATION, INVOLVES FRACTIONAL CONDENSATION OF THE NATURAL GAS AND PASSING A GASEOUS PORTION OF THE THUS-TREATED GAS THROUGH THE SUMP OF A RECTIFICATION COLUMN, IN INDIRECT HEAT EXCHANGE WITH SUMP LIQUID. AT LEAST A PORTION OF THE RESULTANT CONDENSED GASEOUS PORTION IS RETURNED TO THE RECTIFICATION COLUMN AS FEED THROUGH AN EXPANSION VALUE. HEAT EXCHANGERS ARE EMPLOYED TO SUBCOOL NATURAL GAS LIQUID PASSING TO THE STORAGE TANK AND REFLUX LIQUID PASSING TO THE RECTIFICATION COLUMN, SAID HEAT EXCHANGERS BEING COOLED BY NITROGEN FRACTIONS WITHDRAW FROM THE RECTIFICATION COLUMN. THE OVERALL SYSTEM PROVIDES FOR SAVINGS IN RECTIFICATION ENERGY, AND ALSO PROVIDES PEAK REFRIGATION LOADS FOR START-UP PROCEDURES AND THE LIKE.
Inventors
- 👤 W Forg
- 👤 V Etzbach
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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