Factory Price Thermal Vapor Recompression (TVR) Evaporation in starch, beverage field
Thermal Vapor Recompression Evaporators
thermal vapor recompression (TVR) evaporators use a thermocompressor to reduce the steam required per pound of evaporation—ultimately reducing energy consumption and saving costs.
TVR EVAPORATORS
TVR evaporators use Thermal Vapour Recompression to recompress a portion of the vapour from the vapour separator and mix it with the steam to heat the first stage.
Process for TVR evaporator
Thermal Vapour Recompression (TVR) normally takes place across one or more stages by utilizing medium or high pressure steam in an ejector which recycle a portion of the vapour from the vapour separator and mixing it with the steam. This mixture is used for heating of the first evaporation stage.
The steam consumption for a TVR evaporator will vary between approx. 0.3 - 0.07 kg steam per kg water evaporation depending on the number of stages over which the recompression takes place.
This design provides for less costly machinery than straight steam heated designs but requires motive steam pressure.
APPLICATION
The Evaporator Falling Film TVR provides a fully automatic and continuous evaporation system. The Evaporator Falling Film TVR is suitable for the production of the complete range of products. The system is customer specific designed, and therefore available for a wide range of product compositions and capacities.
| Performance Comparison for Different Evaporator | ||||
| Item | Single effect evaporator | multi-effect evaporator | TVR evaporator | MVR evaporator |
| Energy consumption | energy consumption is much higher than others, 1ton water will consume 1Ton steam in theory | comparatively energy conservation | Base on traditional multi-effect evaporator, one more effect added, but higher pressure steam driven needed | The most energy saving technology for evaporator, but 10-40kwh power consumption |
| Floor space | Small | large | large | small |
| Energy sources | steam & power, need steam pipe network and boiler | steam & power, need steam pipe network and boiler | steam & power, need steam pipe network and boiler, need high pressure steam. | electricity, don't need pipe network, all the close-loop circulation system |
| Automaticity | Semi automatic | Full automatic operation, continuous evaporation | Full automatic operation, continuous evaporation | Full automatic operation, continuous evaporation |
FAQ
What is the difference between an MVR and TVR evaporator?
MVR is a Mechanical Vapor Recompression system, energy source is Power/Electricity, very low energy consumption
TVR is a Thermal Vapor Recompression system- energy source is steam, energy consumption dependent on number of stages (calandrias) of evaporation.
Why use a Falling Film evaporator?
The falling film evaporator is a gentle way to remove water in a very energy efficient way. Small footprint for high evaporation.
How high can you go in total solids?
This is very dependent on type of product, all products must be individually considered, mostly the stickiness and viscosity will determine the total solids.
Does viscosity have an impact on the possibility to use an evaporator?
Yes, the viscosity is a very critical factor for a good evaporation, the product must be pumpable.
What kind of products can you run on a falling film evaporator?
Almost all pumpable liquids and soluble products can be run on a falling film evaporator.
Working principle drawing
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