| abstract |
A method and apparatus for liquefying a natural gas feed stream and removing nitrogen therefrom to produce a nitrogen-depleted LNG product, in which a natural gas 5 feed stream is passed through main heat exchanger to produce a first LNG stream, which is separated to form a nitrogen-depleted LNG product and a recycle stream composed of nitrogen-enriched natural gas vapor, and in which the recycle stream is passed through main heat exchanger to produce a first LNG stream, separately from and in parallel with the natural gas feed stream, to produce a first at least partially liquefied 10 nitrogen-enriched natural gas stream that is separated to provide a nitrogen-rich vapor product. 169 165 167 146 156 158 16 144 148 162 112172 176 178 18 168 110 116 184 104 140 192 - Figure 1 |