energy saving single effect falling film vacuum evaporator machine for ethanol
Falling film evaporation is to add the material liquid from the upper tube box of the heating chamber of the falling film evaporator, and distribute it evenly into the heat exchange tubes through the liquid distribution and film forming device. Under the action of gravity, vacuum induction and air flow, it becomes a uniform film. Flow from top to bottom. During the flow process, it is heated and vaporized by the heating medium in the shell side. The generated steam and liquid phase enter the separation chamber of the evaporator. After the vapor and liquid are fully separated, the steam enters the condenser for condensation (single-effect operation) or enters the next-effect evaporator as The medium is heated to achieve multi-effect operation, and the liquid phase is discharged from the separation chamber.
| No. | project | evaporator | condenser |
| 1 | material name | — | |
| 2 | PH value | / | — |
| 3 | discharging way | — | |
| 4 | secondary steam temperature of each effect （℃） | 70±2 vapor phase | 70±2 |
| 5 | temperature of each effective material liquid （℃） | 75±2 liquid phase | 50±2 liquid phase |
| 6 | vacuum degree (-Mpa) | ~0.050 | ~0.090 |
| 7 | the boiling point of each effector liquid increased （℃） | ~5 | — |
| 8 | loss of each effect temperature difference（℃） | 2.0 | — |
| 9 | heat loss of each effect (%) | 8% | — |
| 10 | effective heat transfer temperature difference of each effect （℃） | 30 | — |
| 11 | each effect evaporator circulation type | falling film circulation | — |
| 12 | Heat transfer coefficient of each effect （W/m2。k） | 1150 | — |
