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US 10,918,968 B2Granted
Selective distillation apparatus and distillation method
AssigneeLG Chem, Ltd.
InventorsTae Woo Kim, Sung Kyu Lee, Sung Kyun Kim, Joon Ho Shin, Yeon Uk Choo
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Abstract
The present application relates to a selective distillation apparatus and a distillation method, which provides a distillation apparatus capable of switching between a serial connection mode and a parallel connection mode on the situation, thereby enabling selective operation of high-efficiency operation and high-capacity operation.
Claims9
A selective distillation apparatus comprising:
- a first distillation column equipped with a top reflux device and a bottom reboiler, wherein a top outlet and a bottom outlet are formed, an upper inlet and an upper outlet are formed and a lower inlet is formed;
- a second distillation column equipped with a top reflux device and a bottom reboiler, wherein a top outlet and a bottom outlet are formed and an upper inlet and a lower inlet are formed;
- a piping system and a control part,
- wherein said piping system comprises:
- a first supply line capable of supplying a raw material to said first distillation column;
- a second supply line capable of supplying a raw material to said second distillation column;
- a first discharge line capable of discharging a top product or an upper product of said first distillation column;
- a second discharge line capable of discharging a top product of said second distillation column;
- a first connecting line connecting the bottom outlet of said first distillation column and the lower inlet of the second distillation column;
- a second connecting line connecting the bottom outlet of said first distillation column and the upper inlet of the second distillation column;
- a third connecting line connecting the top outlet of said second distillation column and the lower inlet of the first distillation column;
- and a fourth connecting line connecting the top outlet of said second distillation column and the upper inlet of the first distillation column, and
- wherein said control part is configured to adjust at least one operating state of the reflux devices, the reboilers, the supply lines, the discharge lines, and the connecting lines to an activated or inactivated state,
- wherein the control part is configured to inactivate the first supply line, the first connecting line, the bottom reboiler of the first distillation column and the top reflux device of the second distillation column when the raw material is supplied to the second supply line, or
- wherein the control part is configured to inactivate the second connecting line and the third connecting line when the raw material is supplied to the first supply line, or
- wherein the control part is configured to inactivate the second connecting line, the third connecting line and the bottom reboiler of the first distillation column when the raw material is supplied to the first supply line.
13 more elements
Dependencies are inferred from the claim text.