Use of C4 absorber overhead for stripping aldehydes
AssigneesUop LLC, TPC Group LLC
InventorsJohn J. Senetar, Jeannie M. Blommel, Charles P. Luebke, Dana K. Sullivan, Joseph G. Duff, Jillian M. Horn, Clifford A. Maat, Michael O. Nutt
Life of this patent
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Abstract
A process is presented for the production of butadienes. The process includes the separation of oxygenates from the product stream from an oxidative dehydrogenation reactor. The process includes quenching the product stream and solvent and oxygenates from the product stream. The oxygenates are stripped from the solvent with an inert gas to reduce the energy consumption of the process, and the solvent is recycled and reused in the process.
Claims20
A process for the removal of oxygenates from a butadiene reactor effluent stream comprising:
- passing the butadiene reactor effluent stream to a quench tower;
- cooling and quenching the butadiene reactor effluent stream to generate an overhead stream comprising C4 hydrocarbons, and a bottoms stream comprising solvent and oxygenates;
- passing the bottoms stream to an oxygenate stripper;
- and
- passing an inert gas to the oxygenate stripper, and generating a stripper overhead stream comprising oxygenates and the inert gas, and a stripper bottoms stream comprising solvent, wherein the inert gas is not steam.
A process for the production of butadienes, comprising:
- passing a butene stream to a oxidative dehydrogenation reactor;
- passing superheated steam and compressed air to the oxidative dehydrogenation reactor, to generate an effluent stream comprising butadienes;
- passing the effluent stream, and water through a heat exchanger to generate a cooled effluent stream and a steam stream;
- passing the cooled effluent stream to a quench tower to generate a quenched C4 stream and a quench bottoms stream;
- passing the quenched C4 stream to a compressor to generate a compressed C4 stream;
- passing the compressed C4 stream to an aldehyde scrubber to generate a C4 product stream, and a scrubber bottoms stream;
- passing the scrubber bottoms stream to an aldehyde stripper;
- and
- passing an inert gas stream to the aldehyde stripper to generate a stripper overhead stream and a bottoms water stream, wherein the inert gas is not steam.
Dependencies are inferred from the claim text.