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Integrated Process Design. RESIDUE MAPS. i-PrOH (82.3ºC). AZEOTROPE (80.4ºC). WATER (100ºC). ACETONE (56.3ºC). Residue Maps Residue Curves definition.

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slide2

i-PrOH

(82.3ºC)

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

  • Residue Maps
    • Residue Curves definition

“Experimentally, residue curves can be obtained as the composition of the liquid remaining in a still when vapor is continuously boiled off in an open simple distillation process.”

Wahnschafft O.M. Et al., Ind. Eng. Chem. Res. 31 (10), 1992.

slide3

i-PrOH

(82.3ºC)

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

slide4

i-PrOH

(82.3ºC)

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

SEPARATION regionS

A mixture located at region 1 can not be splitted in streams located at region 2.

Region 1

Region 2

slide5

Residue Maps

(Douglas, J.M., “Conceptual Design of Chemical Processes”, Chemical Engineering Series, McGraw-HillNew York (1988)

slide7

Residue Maps

    • Using the Residue Map

Statement: Predict the distillate and bottoms compositionin a high separation capacity tower for a specified distillate flow.

D = 1

xiD = ?

?

Acetone 1

i-PrOH 8

Water 1

xiW = ?

slide8

B

2. Lever rule:

D

F

W

C

A

Mixture split representation in a ternary diagram.

1. Aligned on a straight line.

slide9

i-PrOH

(82.3ºC)

W

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

D

Acetone 0.5

i-PrOH -

Water -

Acetone 1

i-PrOH 8

Water1

Acetone 0.5

i-PrOH 8

Water 1

Specification: D = 0.5

slide10

i-PrOH

(82.3ºC)

W

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

D

Acetone 1

i-PrOH -

Water -

Acetone 1

i-PrOH 8

Water 1

Acetone -

i-PrOH 8

Water 1

Specification: D = 1

slide11

DIRECT SEPARATION SEQUENCE

Acetone 1

i-PrOH 8

Water 1

Acetone 1

AZEOTROPE

(i-PrOH + Water)

i-PrOH 8

Water 1

i-PrOH

slide12

i-PrOH

(82.3ºC)

W

F

AZEOTROPE

(80.4ºC)

D

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 7

Water 1

Acetone 1

i-PrOH 8

Water 1

Acetone -

i-PrOH 1

Water -

Specification: W = 1

slide13

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 6

Water 1

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 2

Water -

D

Specification: W = 2

slide14

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 5

Water 1

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 3

Water -

D

Specification: W = 3

slide15

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 4

Water 1

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 4

Water -

Specification: W = 4

D

slide16

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 3

Water 1

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 5

Water -

Specification: W = 5

D

slide17

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 2

Water 1

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 6

Water -

Specification: W = 6

D

slide18

i-PrOH

(82.3ºC)

W

F

AZEOTROPE

(80.4ºC)

D

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 1.3

Water 0.7

Acetone 1

i-PrOH 8

Water 1

Acetone -

i-PrOH 6.7

Water 0.3

Specification: W = 7

slide19

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH 0.7

Water 0.3

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 7.3

Water 0.7

Specification: W = 8

D

slide20

i-PrOH

(82.3ºC)

F

AZEOTROPE

(80.4ºC)

WATER

(100ºC)

ACETONE

(56.3ºC)

Acetone 1

i-PrOH -

Water -

Acetone 1

i-PrOH 8

Water 1

W

Acetone -

i-PrOH 8

Water 1

Specification: W = 9

D

slide21

INDIRECT SEPARATION SEQUENCE

Acetone 1

i-PrOH 8

Water 1

Acetone 1

i-PrOH 2

Water 1

i-PrOH 6

i-PrOH can not be isolated !!

slide22

Residue Maps

    • Residue Map generation with Aspen Plus
  • Define components.
  • Define the Property Method.
  • /Tools /Analysis /Properties /Residue