Table 1 The mass and energy flows of incoming materials and outgoing products for the seven cases
Case | 1G | E1 | B1 | C5E1 | C5B1 | UB1 | UC5B1 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Unit | tons/h | MW | tons/h | MW | tons/h | MW | tons/h | MW | tons/h | MW | tons/h | MW | tons/h | MW |
Inputs | ||||||||||||||
Raw material, 1G | 55 | 240 | 45 | 198 | 45 | 198 | 45 | 198 | 45 | 198 | 45 | 198 | 45 | 198 |
Raw material, 2G | 0 | 0 | 23 | 116 | 23 | 116 | 23 | 116 | 23 | 116 | 23 | 116 | 23 | 116 |
Methane produced and used in plant | 0 | 2 | 3 | 37 | 1 | 10 | 2 | 21 | 1 | 14 | 1 | 10 | 1 | 14 |
Natural gas (methane) purchased | 4 | 58 | 0 | 1 | 0 | 0 | 1 | 20 | 0 | 0 | 0 | 0 | 0 | 0 |
Electricity produced and used in plant | – | 4 | – | 5 | – | 6 | – | 5 | – | 6 | – | 8 | – | 7 |
Fresh water | 122 | 0 | 141 | 0 | 141 | 0 | 134 | 0 | 135 | 0 | 141 | 0 | 135 | 0 |
Harvesting and transportation | – | 7 | – | 9 | – | 9 | – | 9 | – | 9 | – | 9 | – | 9 |
Outputs | ||||||||||||||
Ethanol | 20 | 147 | 20 | 147 | 20 | 147 | 22 | 167 | 22 | 167 | 20 | 147 | 22 | 167 |
Methane (sold) | 0 | 0 | 0 | 0 | 4 | 53 | 0 | 0 | 3 | 35 | 4 | 53 | 3 | 35 |
Methane produced total | 0 | 2 | 3 | 37 | 5 | 63 | 2 | 21 | 4 | 49 | 5 | 63 | 4 | 49 |
DDGS (dry) | 19 | 85 | 21 | 91 | 9 | 38 | 19 | 83 | 9 | 37 | 9 | 38 | 9 | 37 |
Carbon dioxide | 20 | 0 | 20 | 0 | 20 | 0 | 23 | 0 | 22 | 0 | 20 | 0 | 22 | 0 |
Electricity, total | – | 14 | – | 14 | – | 9 | – | 14 | – | 9 | – | 9 | – | 9 |
Electricity, sold | – | 10 | – | 8 | – | 3 | – | 9 | – | 4 | – | 0 | – | 2 |