Lng process for variable pipeline gas composition

A method for processing natural gas feed during natural gas liquefaction comprising:

• introducing the natural gas feed into a heavies removal unit, wherein the heavies removal system includes a heavies removal column and a demethanizer, wherein the heavies removal column and the demethanizer are fluidly connected and wherein the heavies removal column is downstream of the demethanizer;
• determining composition of the natural gas feed before it is introduced into the demethanizer;
• and
• purging one or more heavy components of the natural gas feed from the heavies removal column to a methane recycle stream via the purge/recovery line to reduce or increase concentration of heavy components feeding into the demethanizer.