| 摘要 |
METHOD OF REFRIGERATING LIQUEFIED NATURAL GAS, THE GAS OBTAINED BY THIS METHOD, AND AN INSTALLATION IMPLEMENTING IT. THE PRESENT INVENTION CONCERNS A METHOD OF REFRIGERATING LIQUEFIED NATURAL GAS UNDER PRESSURE (1), COMPRISING A FIRST STEP IN WHICH THE LNG(1) IS COOLED, DEPRESSURISED AND SEPARATED (A_ INTO A FIRST BOTTOM FRACTION (4) WHICH IS CONNECTED, AND (B) INTO A FIRST TOP FRACTION (3) WHICH IS HEATED, COMPRESSED IN A COMPRESSOR (K1) AND COOLED IN A FIRST COMPRESSED FRACLION (5) WHICH IS COLLECTED; A SECOND COMPRESSED FRACTION (6) IS TAKEN OFF FROM THE COMBUSTIBLE GAS (5), COOLED AND THEN MIXED WITH THE COOLED AND DEPRESSURISED LGN (1), CHARACTERISED IN THAT IT COMPRISES A SECOND STEP IN WHICH THE SECOND COMPRESSED FRACTION (6) IS COMPRESSED AND COOLED, AND IN THAT A FLOW (8) IS TAKEN OFF FROM IT, WHICH IS COOLED, DEPRESSURISED, HEATED AND INTRODUCED INTO THE COMPRESSOR (K1). OTHER VARIANTS ARE DESCRIBED.(FIG. 6)
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