Process for recovery and separation of bromine and water from oxidation of hydrogen bromide
AssigneeReaction 35, LLC
InventorJohn WAYCUILIS
Life of this patent
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Abstract
A hydrogen bromide (HBr) oxidation/quench system includes a heat exchanger reactor and an adiabatic catalytic reactor in fluid communication with the heat exchanger reactor. The system also includes a quench vessel, the quench vessel in fluid communication with the adiabatic catalytic reactor. The quench vessel has a flange. In addition, the system includes a joined three phase separator and absorber column, wherein both the three phase separator and the absorber column are in fluid communication with the quench vessel and an aqueous stripping column in fluid communication the heat exchanger reactor and the absorber column.
Claims23
A hydrogen bromide (HBr) oxidation/quench system comprising:
- a heat exchanger reactor;
- an adiabatic catalytic reactor in fluid communication with the heat exchanger reactor;
- a quench vessel, the quench vessel in fluid communication with the adiabatic catalytic rector, the quench vessel having a flange;
- a joined three phase separator and absorber column, wherein both the three phase separator and the absorber column are in fluid communication with the quench vessel;
- and
- an aqueous stripping column in fluid communication with the heat exchanger reactor and the absorber column.
A method comprising:
- reacting air and HBr in a heat exchanger reactor to form reactor effluent comprising HBr, water, bromine, nitrogen and unreacted oxygen;
- reacting the reactor effluent in an adiabatic reactor to form adiabatic reactor effluent comprising HBr, water, bromine, nitrogen and unreacted oxygen;
- quenching the adiabatic reactor effluent to form a quench bottoms outlet stream and a quench vessel overhead stream;
- separating the quench bottoms outlet into a bromine product stream and a water recycle stream;
- using a first portion of the water recycle stream as a quench water feed stream;
- and
- stripping a second portion of the water recycle stream in an aqueous stripper to form a water out stream.
A hot vapor transition assembly comprising:
- a central nickel alloy tube;
- an outer annular tube, the outer annular tube annularly enclosing the central nickel alloy tube and forming an inner annular space between the central nickel alloy tube and the outer annular tube;
- and
- a lining, the lining annularly enclosing the outer annular tube and forming an outer annular space between the outer annular tube and the lining.
A method comprising:
- providing a quench vessel, the quench vessel comprising a nozzle;
- providing a hot vapor transition assembly, the hot vapor transition assembly positioned within the nozzle, the hot vapor transition assembly comprising:
- a central nickel alloy tube;
- an outer annular tube, the outer annular tube annularly enclosing the central nickel alloy tube and forming an inner annular space between the central nickel alloy tube and the outer annular tube, the outer annular tube having a protruding portion that extends into the quench vessel;
- and
- a lining, the lining annularly enclosing the outer annular tube and forming an outer annular space between the outer annular tube and the lining;
- introducing hot vapor into the central nickel tube, the hot vapor temperature exceeding the dew point of the hot vapor;
- purging the outer annual space with buffer air;
- and
- cooling the protruding portion with quench water.
Dependencies are inferred from the claim text.