NOVELTY - The method involves introducing natural gas feed stream (100) into warm end of main heat exchanger. The cooled and liquefied stream is withdrawn partially from intermediate location of main heat exchanger. The first liquefied nitrogen-enriched natural gas stream (122) is expanded, vaporized and separated partially to form nitrogen-rich vapor product (136,139) and LNG stream (138). The LNG stream (138) is expanded, vaporized and separated partially to form nitrogen-depleted LNG product and nitrogen-enriched natural gas vapor.    USE - Method for producing nitrogen-depleted liquefied natural gas (LNG) product obtained from natural gas liquefaction plant.    ADVANTAGE - The natural gas feed stream is liquefied to remove nitrogen from natural gas feeds with low nitrogen concentrations so as to produce the nitrogen-depleted LNG product.    DETAILED DESCRIPTION - The cooled and partially liquefied stream is expanded, partially vaporized and separated to form nitrogen-enriched natural gas vapor stream (604) and nitrogen-depleted natural gas liquid stream (602). The vapor and liquid streams are re-introduced separately into intermediate location of main heat exchanger. The vapor and liquid streams are cooled in parallel. The liquid stream is cooled to form first LNG stream (128) and vapor stream and partially liquefied is cooled to form first partially liquefied nitrogen-enriched natural gas stream, and the LNG stream (128) and first partially liquefied nitrogen-enriched natural gas stream are withdrawn from cold end of main heat exchanger. The recycle stream (146) is compressed to form compressed recycle stream. The compressed recycle stream is returned to main heat exchanger to be cooled and partially liquefied in combination with or separately from natural gas feed stream. The compressed recycle stream is added to natural gas feed stream such that the recycle stream is cooled and partially liquefied in the main heat exchanger in combination with natural gas feed stream. The compressed recycle stream is introduced into warm end or intermediate location of main heat exchanger. The compressed recycle stream is cooled and liquefied partially and separately and in parallel with natural gas feed stream to form second partially liquefied nitrogen-enriched natural gas stream, and the second partially liquefied nitrogen-enriched natural gas stream is withdrawn from cold end of main heat exchanger. The cooled and partially liquefied stream is expanded and vaporized partially and separate the stream in phase separator (114) into vapor and liquid phases to form the nitrogen-enriched natural gas vapor stream and nitrogen-depleted natural gas liquid stream. An INDEPENDENT CLAIM is included for an apparatus for producing nitrogen-depleted LNG product has a main heat exchanger which is provided with a first cooling passage extended from warm end of heat exchanger to an intermediate location of heat exchanger, for receiving the natural gas feed stream and cool and partially liquefy the stream so as to produce the cooled and partially liquefied stream. A second cooling passage is extended from intermediate location of heat exchanger to cold end of heat exchanger, for receiving and cooling nitrogen-depleted natural gas liquid stream to form LNG stream (128). A third cooling passage is extended from intermediate location of heat exchanger to cold end of heat exchanger for receiving and cooling nitrogen-enriched natural gas vapor stream in parallel with nitrogen-depleted natural gas liquid stream to form first partially liquefied nitrogen-enriched natural gas stream. A refrigeration system supplies refrigerant to main heat exchanger for cooling the cooling passages. The first separation system is in fluid flow communication with main heat exchanger for receiving the cooled and partially liquefied stream from first cooling passage of main heat exchanger. The liquid and vapor streams are returned to second and third cooling passages of main heat exchanger. The second separation system is in fluid flow communication with main heat exchanger for receiving, expanding, partially vaporizing and separating the first partially liquefied nitrogen-enriched natural gas stream to form nitrogen-rich vapor product and LNG stream (138). The third separation system is in fluid flow communication with second separation system for receiving, expanding, partially vaporizing and separating the LNG stream (138) to form nitrogen-depleted LNG product and nitrogen-enriched natural gas vapor. A compressor system is in fluid flow communication with third separation system and main heat exchanger, for receiving recycle stream from third separation system, and formed from nitrogen-enriched natural gas vapor. The recycle stream is compressed to form compressed recycle stream, and compressed recycle stream is returned to main heat exchanger to be cooled and partially liquefied in combination with or separately from natural gas feed stream. The refrigeration system is provided as closed loop refrigeration system. The first separation system is provided with an expansion device and phase separator. The second separation system is provided with an expansion device and phase separator or distillation column. The third separation system is provided with an expansion device and LNG tank.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device for producing nitrogen-depleted LNG product.    Natural gas feed stream (100)    Phase separator (114)    First liquefied nitrogen-enriched natural gas stream (122)    LNG streams (128,138)    Nitrogen-rich vapor product (136,139)    Recycle stream (146)    Nitrogen-depleted natural gas liquid stream (602)    Nitrogen-enriched natural gas vapor stream (604)