A method for regasifying liquefied natural gas to use the calorify potential of the same. (Machine-translation by Google Translate, not legally binding)

摘要

A method for regasifying liquefied natural gas to utilize the calorific potential thereof, comprising: (a) partially evaporating said liquefied natural gas and recovering the cold potential thereof with a heat exchange medium; (b) introducing said partially evaporated natural gas into a methane separation zone, and separating therein a gaseous overhead fraction containing predominantly methane and a liquid tail fraction containing ethane and heavier components; (c) superheating said gaseous methane fraction up to the distribution temperature and recovering its cold potential with a heat exchange medium and removing said fraction as a product; (d) introducing said liquid fraction of glue into an ethane separation zone and separating therein a gaseous ethane fraction as the head and a glue fraction containing propane and any heavier components; (e) introducing said ethane fraction as feedstock into an ethylene facility; (f) supply the cooling needs of said ethylene facility with the cold potential recovered in operations (a) and (c); (g) removing as separate products from said ethylene facility an ethylene fraction and a lighter gas fraction containing substantially hydrogen, carbon monoxide, methane and the like; and (h) mixing said lighter gas fraction from operation (g) with said propane fraction from operation (d) to produce a gas having approximately the same heat value as the gas withdrawn in operation (c). (Machine-translation by Google Translate, not legally binding)