NOVELTY - An integrated deethanizer and ethylene fractionation column for separating a feed stream comprising ethylene, ethane and C3+ into individual components.    USE - For separating the feed stream comprising ethylene, ethane and C3+ into individual components.    ADVANTAGE - The design allows the use of one slightly larger column in place of the two large columns previously used for separate deethanization and ethylene fractionation.    DETAILED DESCRIPTION - An integrated deethanizer and ethylene fractionation column for separating a feed stream comprising ethylene, ethane and C3+ into individual components comprising: a single shell housing a refluxed upper portion and a lower portion, each of the portions comprising multiple vapor-liquid contacting elements; a generally vertical wall partitioning the lower portion into a deethanizer section and an ethylene stripper section; a feed line for supplying at least one feed stream to at least one feed stage of the deethanizer section of the lower portion of the column, between several absorption stages above the feed stage and several stripping stages below the feed stage, for producing an overhead vapor stream from the deethanizer section consisting essentially of ethylene and ethane and a bottoms stream consisting essentially of C3 and heavier components; a distribution pan at a lower end of the upper portion of the column for facilitating passage of vapors from the deethanizer and ethylene stripper sections into the upper column portion, and for dividing liquid for passage from the upper portion of the column into an upper stage of the deethanizer section and into the ethylene stripping section.    An INDEPENDENT CLAIM is also included for a process for separating a feed stream comprising ethylene, ethane and C3+ into individual components, which comprising:    (1) supplying the feed stream to the feed stage of the deethanizer section of the lower portion of the above integrated column;    (2) passing overhead vapor from the deethanizer and ethylene stripper sections through the distribution pan to the upper portion of the column;    (3) refluxing the upper portion of the column with ethylene and recovering essentially pure ethylene overhead from the upper portion of the column;    (4) passing liquid from the distributor pan into an upper stage of the deethanizer section and into an upper stage of the ethylene stripper section;    (5) reboiling the deethanizer section and recovering a C3+ bottoms product stream therefrom essentially free of ethane and ethylene; and    (6) reboiling the ethylene stripper section and recovering an ethane bottoms product stream therefrom essentially free of ethylene and C3+.    DESCRIPTION OF DRAWING(S) - The drawing shows a simplified diagram of ethylene recovery in a front end depropanizer process.    Stripping section of the ethylene fractionator (108)    Upper portion of the column (102)    Lower portion of the column (104)    A distribution pan (110)    Reboiler (132)