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US 2010/0168347 A1Published application
Processes Using Dividing Wall Distillation Column
AssigneeFina Technology, Inc.
InventorJames R. Butler
Life of this patent
Estimating the term…
Abstract
A method for the separation of hydrocarbon compounds utilizing a dividing wall distillation column is described. The dividing wall distillation column enables one or more side draw stream to be removed from the dividing wall distillation column in addition to an overhead stream and a bottoms stream.
Claims34
1-6. (canceled)
A method for the separation of hydrocarbon compounds comprising:
- obtaining a first stream comprising hydrocarbon compounds, wherein the first stream is produced from a first reaction zone:
- sending at least a portion of the first stream to a dividing wall distillation column comprising a dividing wall;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column, wherein at least a portion of the bottoms stream is recycled as feed to the first reaction zone;
- and
- removing a side draw stream from the dividing wall distillation column;
- wherein the first stream enters the dividing wall distillation column on an opposing side as the side draw stream, separated by the dividing wall.
3 more elements
A method for the separation of hydrocarbon compounds comprising:
- obtaining a first stream comprising hydrocarbon compounds, wherein the first stream is a reactor effluent stream from a polystyrene reaction zone;
- sending at least a portion of the first stream to a dividing wall distillation column comprising a dividing wall;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column;
- and
- removing a side draw stream from the dividing wall distillation column;
- wherein the first stream enters the dividing wall distillation column on an opposing side as the side draw stream, separated by the dividing wall.
3 more elements
A method for the separation of hydrocarbon compounds comprising:
- obtaining a first stream comprising hydrocarbon compounds, wherein the first stream is produced from a first reaction zone that produces the first stream comprising styrene;
- sending at least a portion of the first stream to a dividing wall distillation column comprising a dividing wall;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column;
- and
- removing a side draw stream from the dividing wall distillation column;
- wherein the first stream enters the dividing wall distillation column on an opposing side as the side draw stream, separated by the dividing wall.
3 more elements
15-17. (canceled)
A method for the separation of hydrocarbon compounds comprising:
- obtaining a first stream comprising ethylbenzene produced from a benzene alkylation reaction zone;
- sending at least a portion of the first stream to a dividing wall distillation column comprising a dividing wall;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column, wherein the bottoms stream comprises polyethylbenzene;
- and
- removing a side draw stream from the dividing wall distillation column;
- wherein the first stream enters the dividing wall distillation column on an opposing side as the side draw stream, separated by the dividing wall.
3 more elements
21-25. (canceled)
A method for the separation of hydrocarbon compounds comprising:
- obtaining a first stream comprising at least two of benzene, toluene, xylene or ethylbenzene;
- sending at least a portion of the first stream to a dividing wall distillation column comprising a dividing wall;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column;
- and
- removing a side draw stream from the dividing wall distillation column, wherein the side draw stream comprises toluene;
- wherein the first stream enters the dividing wall distillation column on an opposing side as the side draw stream, separated by the dividing wall.
3 more elements
A method for the separation of hydrocarbon compounds comprising:
- obtaining a first stream comprising at least two of benzene, toluene, xylene or ethylbenzene;
- sending at least a portion of the first stream to a dividing wall distillation column comprising a dividing wall;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column, wherein the bottoms stream comprises xylene;
- and
- removing a side draw stream from the dividing wall distillation column;
- wherein the first stream enters the dividing wall distillation column on an opposing side as the side draw stream, separated by the dividing wall.
3 more elements
28-29. (canceled)
A method of polystyrene production comprising:
- feeding a stream comprising styrene to a polystyrene reaction zone, wherein a stream comprising polystyrene is removed and a reactor effluent stream is removed;
- sending at least a portion of the reactor effluent stream to a dividing wall distillation column;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column;
- and
- removing a side draw stream comprising styrene from the dividing wall distillation column.
2 more elements
A method of styrene production comprising:
- obtaining a first product stream from a styrene reaction zone;
- sending at least a portion of the first product stream to a dividing wall distillation column;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column;
- and
- removing a side draw stream from the dividing wall distillation column.
2 more elements
43-47. (canceled)
A method of ethylbenzene production comprising:
- obtaining a first product stream from an alkylation reaction zone;
- sending at least a portion of the first product stream to a dividing wall distillation column;
- removing an overhead stream and a bottoms stream from the dividing wall distillation column, wherein the bottoms stream comprises polyethylbenzene;
- and
- removing a side draw stream from the dividing wall distillation column.
2 more elements
Dependencies are inferred from the claim text.