Liquefied Natural Regasification Plant

Abstract

The invention relates to a plant for regasification of liquefied natural gas (GNL), comprising a liquefied gas storage reservoir ( 10 ) and a regasification device ( 12 ) for the GNL through which the natural gas and a heat transfer medium flow. According to the invention, the plant comprises a loop circuit ( 16 ) in which the heat transfer medium circulates in the form of a low-viscosity organic liquid with a low crystallisation point and the regasification device ( 12 ) comprises at least two exchangers ( 60, 62 ).

1 ) A liquefied natural gas (LNG) regasification plant comprising a tank for storing the gas in liquefied form and an LNG regasification device through which a heat carrier and the natural gas flow, characterized in that the plant comprises a loop circuit in which the heat carrier circulates in form of a low-viscosity and low-crystallization point organic fluid, and in that the regasification device comprises at least two exchangers. 
   
   
       2 ) A regasification plant as claimed in  claim 1 , characterized in that it comprises a heat carrier heating unit. 
   
   
       3 ) A regasification plant as claimed in  claim 2 , characterized in that air flows through the heating unit. 
   
   
       4 ) A regasification plant as claimed in  claim 1 , characterized in that the heat carrier has a crystallization temperature ranging between −90° C. and −150° C. 
   
   
       5 ) A regasification plant as claimed in  claim 1 , characterized in that the heat carrier is an alcohol such as methanol, ethanol or propanol. 
   
   
       6 ) A regasification plant as claimed in  claim 1 , characterized in that one of the exchangers is co-current between the LNG and the heat carrier, and in that another of the exchangers is counter-current. 
   
   
       7 ) A regasification plant as claimed in  claim 6 , characterized in that the counter-current exchanger is in two parts between which a phase separator is interposed. 
   
   
       8 ) A regasification plant as claimed in  claim 6 , characterized in that at least the counter-current exchanger is of brazed plate-fin exchanger type. 
   
   
       9 ) A regasification plant as claimed in  claim 1 , characterized in that the heat carrier circulation circuit comprises an additional heating exchangers. 
   
   
       10 ) A regasification plant as claimed in  claim 1 , characterized in that it comprises means for liquefying a hydrocarbon by calorific exchange with the heat carrier. 
   
   
       11 ) A regasification plant as claimed in  claim 10 , characterized in that the hydrocarbon is in gaseous form after being used for driving a turbine. 
   
   
       12 ) A regasification plant as claimed in  claim 10 , characterized in that the hydrocarbon is propane. 
   
   
       13 ) A regasification plant as claimed in  claim 1 , characterized in that it comprises means for CO 2  trapping by the heat carrier. 
   
   
       14 ) A regasification plant as claimed in  claim 13 , characterized in that the heat carrier is used as solvent of the CO 2 .