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Table 4 Energy consumption of each unit

From: Systematic design of separation process for bioethanol production from corn stover

Unit Energy consumption (BTU/hr)
Case 1 (base case) Case 2 Case 3
Pretreatment 1.47 × 107 1.47 × 107 1.47 × 107
Sep-01 1.29 × 104 1.29 × 104 1.29 × 104
DETOX 1.92 × 107 1.92 × 107 1.92 × 107
De-TOXIC 2.36 × 103
Hydrolysis 1.34 × 107 1.93 × 107 1.93 × 107
Fermentation 2.29 × 107 2.40 × 106 2.40 × 106
Beer column-condenser 1.94 × 108
Beer column-reboiler 1.92 × 108
Rectification column-condenser 1.27 × 108
Rectification column-reboiler 1.27 × 108
Molecular sieve 3.16 × 107
DETOC-AC 1.05 × 105 1.05 × 105
Filtration 1.97 × 106 1.97 × 106
Flash 8.81 × 10−8 8.81 × 10− 8
Distillation column-condenser 7.54 × 107
Distillation column-reboiler 7.70 × 107
Extractive distillation-condenser 3.71 × 107
Extractive distillation-reboiler   4.69 × 107  
Recovery column-condenser   6.56 × 106  
Recovery column-reboiler   1.06 × 107  
Pervaporation    2.33 × 108