OPTIMISED & USER FRIENDLY SOLUTIONS

Mechanical vapor recompressor

Maximum heat utilization

The problem & the solution

The mechanical vapour recompressor is an additional option for the Vapogant if little or no waste heat is available from a combined heat and power plant.

The process

1. heating in the evaporator 1:

The contents of evaporator 1 are heated using the thermal output from a external heat source, until steam is produced.

2. utilization of the steam (vapor) in the evaporator 2:
The resulting vapor from evaporator 1 is used to heat evaporator 2.
In evaporator 2, the purified vapor condenses in the evaporator plates, whereby the condensation energy is used to heat the contents in evaporator 2.

3. further vaporization process in the evaporator 2:
As soon as vapor is produced in evaporator 2, the vapor from evaporator is routed to the mechanical vapor compressor (MBV). The compressed vapor is then used as heating steam for evaporator 2.

4. temperature control of the compressed vapor:
In the MBV, the vapor is compressed, which leads to an increase in temperature.
Condensate is injected to cool the compressed vapor to prevent overheated vapor from entering the evaporator plates.

5. additional steam utilization and condensation:
In order to provide sufficient heating steam for evaporator 2, part of the vapor from evaporator 1 can be fed in.
The remaining vapor from evaporator 1 is fed to the heat recovery system where it is precipitated as condensate.

6. heat utilization and storage:
The thermal power contained in the condensed vapor is decoupled.
This heat can either be stored temporarily in a heat accumulator or used directly.

Advantages

  • Low thermal output required for the same amount of condensate
  • Maximum external heat utilization
  • Utilization of thermal and electrical power
  • Increased efficiency

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