Propane/butane dehydrogenation complex with thermal oxidation system

An integrated propane or butane dehydrogenation and thermal oxidation process, the process comprising:

• dehydrogenating an alkane feed stream comprising propane, butane, or mixtures thereof in a dehydrogenation reaction zone in the presence of a dehydrogenation catalyst under dehydrogenation conditions to form a dehydrogenated product stream comprising propylene, iso-butylene, or mixtures thereof;
• recovering the dehydrogenated product stream and thereby producing a sulfidic spent caustic stream and a spent solvent stream;
• at least one of:
• introducing the sulfidic spent caustic stream from a regenerant gas scrubbing zone into a spent caustic buffer vessel;
• introducing at least one of the spent solvent stream from a solvent recovery section, and a purge stream into a hydrocarbon buffer vessel;
• and
• thermally oxidizing at least one of the sulfidic spent caustic stream from the spent caustic buffer vessel, a liquid hydrocarbon stream from the hydrocarbon buffer vessel,
• an off-gas stream from an off-gas knockout drum, and a fuel gas stream from a fuel gas knockout drum in a thermal oxidation system.