(WO9324428-A1)      Recovery of light (C2+) hydrocarbons from a gas produced by cracking hydrocarbons and removing heavy hydrocarbons is effected by: (a) scrubbing the gas in an absorption column with an organic solvent having a molecular wt. of 50-75; (b) passing the loaded solvent to a regeneration column to remove the light hydrocarbons; and (c) recycling the regenerated solvent to the absorption column.    The light hydrocarbons are ethylene and ethane. The solvent is a C4+ paraffin fraction, esp. comprising pentane and/or isopentane. The absorption column (2) is operated at -50 to 0 (esp. -45 to -35) deg.C and 4-50 (esp. 10-30) bar. It includes a lower stripping section for removing entrained CH4. The regeneration column (14) is operated at a bottom temp. of up to 120 (pref. up to 105) deg.C and at a lower pressure than the absorption column. The overhead stream from the regeneration column is partially condensed and the condensate sepd. (20). The residual gas is passed to a C2/C3 separator (26), and the resulting C2 stream is sepd. 930) into ethylene and ethane streams.    ADVANTAGE -   The process avoids the explosion hazards associated with low-temp. partial condensation processes (cf. EP185202).    (ZA9303662-A)      Recovery of low molecular weight C2+ hydrocarbons, in particular ethylene and ethane from a cracking gas, in partic. from a fluid catalytic cracking waste gas is claimed. The light C2+ hydrocarbons are scrubbed out of the cracking gas by absorption, using an organic, pref. paraffinic, physically acting scrubbing agent, the scrubbing agent having a mol. wt. of 50-75 g/mol., pref. 60-75 g/mol.    Partic. suitable as scrubbing agents are pentane, isopentane or mixtures thereof. Prior to the generation of the loaded scrubbing agent, co-extracted methane is advantageously stripped off.    (JP8506082-W)      Recovery of light (C2+) hydrocarbons from a gas produced by cracking hydrocarbons and removing heavy hydrocarbons is effected by: (a) scrubbing the gas in an absorption column with an organic solvent having a molecular wt. of 50-75; (b) passing the loaded solvent to a regeneration column to remove the light hydrocarbons; and (c) recycling the regenerated solvent to the absorption column.    The light hydrocarbons are ethylene and ethane. The solvent is a C4+ paraffin fraction, esp. comprising pentane and/or isopentane. The absorption column (2) is operated at -50 to 0 (esp. -45 to -35) deg.C and 4-50 (esp. 10-30) bar. It includes a lower stripping section for removing entrained CH4. The regeneration column (14) is operated at a bottom temp. of up to 120 (pref. up to 105) deg.C and at a lower pressure than the absorption column. The overhead stream from the regeneration column is partially condensed and the condensate sepd. (20). The residual gas is passed to a C2/C3 separator (26), and the resulting C2 stream is sepd. 930) into ethylene and ethane streams.    ADVANTAGE -   The process avoids the explosion hazards associated with low-temp. partial condensation processes (cf. EP185202).    (US5520724-B1)      Recovery of light (C2+) hydrocarbons from a gas produced by cracking hydrocarbons and removing heavy hydrocarbons is effected by: (a) scrubbing the gas in an absorption column with an organic solvent having a molecular wt. of 50-75; (b) passing the loaded solvent to a regeneration column to remove the light hydrocarbons; and (c) recycling the regenerated solvent to the absorption column.    The light hydrocarbons are ethylene and ethane. The solvent is a C4+ paraffin fraction, esp. comprising pentane and/or isopentane. The absorption column (2) is operated at -50 to 0 (esp. -45 to -35) deg.C and 4-50 (esp. 10-30) bar. It includes a lower stripping section for removing entrained CH4. The regeneration column (14) is operated at a bottom temp. of up to 120 (pref. up to 105) deg.C and at a lower pressure than the absorption column. The overhead stream from the regeneration column is partially condensed and the condensate sepd. (20). The residual gas is passed to a C2/C3 separator (26), and the resulting C2 stream is sepd. 930) into ethylene and ethane streams.    ADVANTAGE -   The process avoids the explosion hazards associated with low-temp. partial condensation processes (cf. EP185202).