Optimized arrangement of a mid scale liquified natural gas production unit

Abstract

An optimized arrangement of a modularized liquefied natural gas production unit is disclosed. The arrangement comprises a cold box integral with the refrigerant fluid closed thermodynamic refrigeration cycle module.

1 . A modularized liquefied natural gas production unit comprising a natural gas main exchanger module and a refrigerant fluid closed thermodynamic refrigeration cycle module, wherein the natural gas main exchanger module comprises a natural gas main heat exchanger and a main electrical room and the refrigerant fluid closed thermodynamic refrigeration cycle module comprises refrigerant compressor suction vessel, refrigerant compressor discharge vessel, refrigerant compressor intermediate compression stage cooler and refrigerant compressor intermediate compression stage condenser, wherein the main exchanger module is installed in close proximity to a refrigerant compressor skid. 
     
     
         2 . The modularized liquefied natural gas production unit of  claim 1 , wherein the main exchanger module further comprises instrumentation and electrical connections. 
     
     
         3 . The modularized liquefied natural gas production unit of  claim 1 , wherein the refrigerant compressor skid is installed in close proximity to the main electrical room. 
     
     
         4 . The modularized liquefied natural gas production unit of  claim 1 , wherein the refrigerant fluid closed thermodynamic refrigeration cycle module comprises a natural gas feed line and product lines. 
     
     
         5 . The modularized liquefied natural gas production unit of  claim 4 , wherein the product lines comprise a liquefied natural gas line and a liquefied petroleum gas line. 
     
     
         6 . The modularized liquefied natural gas production unit of  claim 1 , wherein the refrigerant fluid closed thermodynamic refrigeration cycle module comprises emergency relief installations. 
     
     
         7 . The modularized liquefied natural gas production unit of  claim 6 , wherein the emergency relief installations comprise a flare drum. 
     
     
         8 . The modularized liquefied natural gas production unit of  claim 1 , wherein the main exchanger module is integral with the refrigerant fluid closed thermodynamic refrigeration cycle module to form an integrated refrigeration module.