Table 7 Stream data for the 1G stand-alone ethanol plant

Hot streams

27

90

37

4.6

1

Liquefied stream to SSF

2

Stillage from stripper to separation

27

105

80

2.6

3

Condensing overhead vapor stripper column

6

92

81

8.9

4

Stillage from rectifier to WWT

3

142

45

1.1

5

Condensing 99.5% ethanol stream

3

130

114

2.3

5

99.5% ethanol to storage

3

114

35

0.6

6

Condensate from evaporation to WWT

15

81

45

2.1

7

Condensing overhead vapor from last evaporation step

5

63

60

11.5

7

Condensed vapor from last evaporation step to WWT

5

60

45

0.3

8

Condensing stream from molecular sieve

1

130

113

1.2

9

Condenser 1G rectifying column

4

113

112

13

Cold streams

35

30

32

0.2

1

Temperature adjustment of liquefied stream to SSF

10

SSF broth to stripper column

33

32

91

7.1

11

Fresh water to liquefaction

4

10

45

0.6

3

Condensate from stripper to rectifier

6

81

119

0.8

12

Overhead vapor rectifier to dehydration

4

113

130

0.1

13

Thin stillage after separation to evaporation

22

80

128

4.4

13

Evaporation of thin stillage: first step

22

127

128

6.6

14

Fresh air preheating to air mixing

35

10

20

0.4

15

Air mixture to dryer

124

70

150

10.7

18

Preheating of wheat kernel and water for liquefaction

26

38

60

1.8

19

Live steam heating in liquefaction

26

60

94

2.8

20

Reboiler stripper column

27

104

105

10.1

21

Reboiler rectifying column

3

141

142

16.6