Processes for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal
AssigneeUop LLC
InventorsMichael R. Smith, Gavin P. Towler
Life of this patent
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Abstract
Processes for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal are provided. Aromatic reactor effluent comprising a C5− fraction and a C6 to C10 fraction is separated into a benzene-rich stream and liquid and vapor streams depleted in benzene, one of the liquid streams depleted in benzene being a benzene-depleted C6− fraction. At least a portion of the C5− fraction from the benzene-rich stream is removed.
Claims20
A process for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal, the process comprising the steps of:
- separating aromatic reactor effluent comprising a C5− fraction and a C6 to C10 fraction into a benzene-rich stream and at least one liquid stream and at least one vapor stream depleted in benzene, one of the liquid streams depleted in benzene comprising a benzene-depleted C6− fraction;
- and
- removing at least a portion of the C5− fraction from the benzene-rich stream.
A process for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal, the process comprising the steps of:
- introducing aromatic reactor effluent to a dehexanizer column;
- removing a benzene-depleted liquid stream from the dehexanizer column, the benzene-depleted liquid stream comprising C3-C5 paraffins and C6 paraffins and aromatics;
- removing a benzene-rich stream from the dehexanizer column, the benzene-rich stream comprising unstabilized crude benzene comprising C1 to C5 paraffins and benzene;
- removing a benzene-depleted vapor stream from the dehexanizer column, the benzene-depleted vapor stream comprising hydrogen gas and C1 to C4 paraffins;
- removing a benzene-depleted liquid stream from the dehexanizer column, the benzene-depleted liquid stream comprising C7+ aromatics;
- and
- introducing the benzene-rich stream into a benzene stripping column to at least partially remove the C1 to C5 paraffins therefrom.
A process for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal, comprising the steps of:
- introducing aromatic reactor effluent into a dehexanizer column to produce unstabilized crude benzene;
- introducing the unstabilized crude benzene into a benzene sidecut stripping column to at least partially remove C1-C5 paraffins therein.
Dependencies are inferred from the claim text.