A PROCESS FOR THE PRODUCTION OF C₂ HYDROCARBONS VIA PARTIAL OXIDATIVE PYROLYSIS OF METHANE INTEGRATED WITH ENDOTHERMIC C₂H₆ + CO₂ QUENCH REACTIONS

摘要

A process for producing ethylene comprising introducing fuel and oxidant gas to combustion zone to produce combustion product; introducing first reactants (hydrocarbons, combustion product) to first reaction zone to produce pyrolysis product (unconverted hydrocarbons, C₂H₂, CO, H₂, CO₂, optionally C₂H₄), wherein combustion product heats hydrocarbons to first temperature effective for pyrolysis; cooling pyrolysis product in quench zone to produce cooled pyrolysis product having second temperature lower than first temperature; introducing second reactants (C₂H₆, cooled pyrolysis product) to second reaction zone excluding catalyst to produce second product (C₂H₄, CO, H₂, C₂H₂, CO₂, unconverted hydrocarbons), wherein C₂H₆ dehydrogenates to C₂H₄, wherein CO₂ hydrogenates to CO, wherein C₂H₄ amount in second product is greater than in pyrolysis product, wherein second product is characterized by third temperature lower than second temperature; separating second product into C₂H₄&C₂H₂ stream (C₂H₄, C₂H₂, CO, H₂, unconverted hydrocarbons) and CO₂ stream; and recycling CO₂ stream to second reaction zone.