FIELD: integral cycles with built-in multi-stage cascades. SUBSTANCE: cooling agent in form of mixture escaping from last but one stage of compressor is directed to distillation apparatus; vapor phase from upper portion of distillation apparatus is cooled to temperature considerably lower than ambient temperature, after which it is divided into two phases. Vapor phase thus obtained is fed to suction end of last stage of compressor and liquid phase is used as coolant for hot part of heat exchange loop of plant for cooling fluid medium; it is provided with distillation apparatus, devices for cooling its upper portion, auxiliary heat exchanger and denitration column. EFFECT: simultaneous reduction of specific energy of process and outlays. 17 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND DEVICE FOR LIQUEFIED GAS COOLING | 2001 |
|
RU2270408C2 |
| METHOD OF NATURAL GAS FLOW LIQUEFACTION AND NITROGEN REMOVAL THEREFROM AND DEVICE (EMBODIMENTS) FOR IMPLEMENTATION THEREOF | 2015 |
|
RU2702829C2 |
| NITROGEN ELIMINATION FROM CONDENSATED NATURAL GAS | 2004 |
|
RU2337130C2 |
| LNG PRODUCTION WITH NITROGEN REMOVAL | 2021 |
|
RU2764820C1 |
| METHOD FOR LIQUEFACTION OF HYDROCARBON-RICH GAS STREAM | 1998 |
|
RU2212601C2 |
| PLANT AND DEVICE FOR LIQUEFACTION OF NATURAL GAS | 2006 |
|
RU2395764C2 |
| METHOD (EMBODIMENTS) AND APPARATUS (EMBODIMENTS) FOR PRODUCING NITROGEN-DEPLETED LNG PRODUCT | 2015 |
|
RU2702074C2 |
| SYSTEM FOR SEPARATION OF NON-CONDENSED COMPONENT AT NATURAL GAS LIQUEFACTION PLANT | 2009 |
|
RU2509968C2 |
| IMPROVED NITROGEN REMOVAL AT NATURAL LIQUEFACTION PLANT | 2009 |
|
RU2502026C2 |
| METHOD OF LIQUEFYING NATURAL GAS USING REFRIGERATING CIRCUIT WITH CLOSED CYCLE | 2016 |
|
RU2684060C2 |
