How do you calculate the economy of an evaporator?
The goal is to increase the steam economy of the evaporator system….Steam Economy Calculation
- F = mass of feed (water fed into the evaporator)
- P = mass of product (water left into the evaporator that did not evaporate)
- E = mass of water evaporated (collected as condensate)
What is wiped film evaporator?
The Wiped Film Evaporators (WFE) are designed to continuously separate volatile compounds by introducing a mechanically agitated thin film of feed material to a heated surface for efficient and reliable processing of a wide variety of products.
How is evaporator performance measured?
The performance of a evaporator is evaluated by the capacity and the economy….There are three main measures of evaporator performance:
- Capacity (kg vaporized / time)
- Economy (kg vaporized / kg steam input)
- Steam Consumption (kg / hr)
How does wiped distillation work?
Wiped film distillation is a solution that creates a thin film of a liquid on a vertical evaporator’s inner surface generated by a wiper system. As the wiper rotates, down-flowing liquid is equally distributed to feed on the wall’s inner side.
How does a WFE work?
How Does a WFE Work? The WFE is a jacketed vertical vessel with an agitator. The feed enters the top of the WFE and the rotating distributor delivers the feed evenly to the heat transfer wall. Wiper blades spread the feed to a thin film and pump the fluid down the heat transfer wall.
How is COP of evaporator calculated?
COP = Qlow/(-W) = Qlow/(Qhigh – Qlow).
What is BPR in evaporation?
Another black liquor property that strongly affects evaporator operation is the boiling point rise (BPR) as described in Slide 22.
How does the falling film evaporator work?
How does a falling film evaporator work? Falling film evaporators use a heat source such as electric heaters, or in our case heat pumps, to heat the solution until the lower boiling point liquid becomes gaseous and then uses a condenser to turn this separated gas back into a liquid which becomes a recovered solvent.
What is WFE equipment?
A Wiped Film Evaporator (WFE) is a thin film evaporator specifically designed to handle the most difficult evaporation applications including the following: Heat Sensitive Products. Viscous Products. High Fouling Products. High Boiling Products.