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õ¿¬°¡½º ¾×È¿ë ÀÌÁß ³Ã¸Å ÆØâ »çÀÌŬ / Advanced Dual Refrigerant Expansion Cycle for LNG Liquefaction / ÇؾçÇ÷£Æ® |
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Çѱ¹Ç÷£Æ®ÇÐȸ Çмú¹ßÇ¥´ëȸ ³í¹®Áý, Vol.2018 No.1 (2018-07) |
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½ÃÀÛÆäÀÌÁö(143) ÃÑÆäÀÌÁö(10) |
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ºÎÀ¯½Ä ¾×Èõ¿¬°¡½º ¼³ºñ ; °¡½º ÆØâ »çÀÌŬ ; ¾×È ; FLNG ; Gas Expansion Cycle ; Liquefaction |
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±âÁ¸ ¸Þź & Áú¼Ò ÆØâ »çÀÌŬÀÇ È¿À² °³¼±À» À§ÇØ 2 °³ÀÇ ¸Þź ÆØâ °øÁ¤ (cold composite curve¿¡ º¯°îÁ¡À» Çϳª ´õ Ãß°¡Çϱâ À§ÇØ warm & cold 2 °³ °øÁ¤À¸·Î ³ª´®)°ú 1 °³ÀÇ Áú¼Ò ÆØâ °øÁ¤À» »ç¿ëÇÑ Ãµ¿¬°¡½º ¾×È »çÀÌŬÀ» ¼Ò°³Çϱâ À§ÇÑ ³í¹®ÀÌ´Ù. ÀÌÀü Áú¼Ò ÆØâ »çÀÌŬ ¹× ¸Þź & Áú¼Ò »çÀÌŬ°ú ºñ±³ÇßÀ» ¶§, 13.92 ¹× 13.13 ¿¡¼ 12.08 kW/ton/day·Î È¿À²ÀÌ 8 ~ 15% Á¤µµ °³¼±µÇ¾ú´Ù. ¼ø ÇöÀç°¡Ä¡(NPV) ±âÁØÀ¸·Î ÇÑ ¼ö¸í Áֱ⠺ñ¿ë ºÐ¼®(LCC analysis) ¶ÇÇÑ ¾à°£ÀÇ CAPEX Áõ°¡´Â ÀÖÁö¸¸ ÇÁ·ÎÁ§Æ® ¼ø ÇöÀç°¡Ä¡°¡ °³¼±µÈ °á°ú¸¦ º¸¿©ÁØ´Ù. |
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This paper presents a LNG Liquefaction cycle configuration using two stages of methane expansion (i.e. spliting into two stages as warm & cold to generate an additional inflection point within a cold composite curve) and a single stage of nitrogen expansion to improve the efficiency of the conventional Methane & Nitrogen Expansion Cycle. In comparison with Double Nitrogen Expansion Cycel and Methane & Nitrogen Expansion Cycle, the cycle efficiency has increased approximately from 13.92 and 13.13 to 12.08 kW/ton/day (8~15% efficiency increase). A Life Cycle Cost (LCC) analysis based on Net Present Value (NPV) also show an improvement in therms of project NPV, against a minor increment of a CAPEX. |