Multi stage vacuum systems

Vacuum systems with mixing condensers

Nearly unlimited applications as well as high operational reliability. The customised Körting vacuum systems with mixing condensers are approved and demanded solutions in the process industry.

The first figure below illustrated achieves a suction pressure of 1 mbar. The temperature of the available cooling water determines which pressure can be reached in the first mixing condenser. In this example, two ejector stages are series-connected to achieve a suction pressure of 1 mbar with the lowest possible amount of motive flow. Two further ejector stages compress the non-condensable components of the suction flow of the first mixing condenser up to atmospheric pressure. The interconnected mixing condenser as well condenses the motive steam of the upstream ejector.

Advantages

• Operation-free, robust operation
• Approved operation for decades
• Nearly unlimited application options

Disadvantages

• Mixing of process and cooling medium in the mixing condenser (can be equilibrated by means of vacuum system with surface condenser)

Deliverable options

• Controllable vacuum systems with mixing condensers
• Vacuum systems with mixing condensers and liquid ring vacuum pump
• Vacuum systems with mixing condensers for non-barometric installation
• Vacuum systems with mixing condensers in closed alkaline loop (chilled water)
• Vacuum systems with mixing condensers in closed alkaline loop (cooling water)
• Vacuum systems with process-vapour operated ejectors

Vacuum systems with surface condensers

Customised Körting multi-stage vacuum systems offer a wide variety of applications. In the field of process engineering surface condensers have proven to be ideal. The decisive advantage is to separate the cooling and the process medium. There are different options of Körting vacuum systems with surface condensers available.

The second figure below illustrates a 3-stage system. In this example two jet ejector stages are connected in series to achieve a suction pressure of 1 mbar with a minimum of motive medium. The temperature of the available cooling water determines the achievable pressure in the first surface condenser. A further jet ejector stage compresses the suction flow components of the first surface condenser which can’t be condensed to atmospheric pressure. The motive steam of the upstream jet ejector is condensed in the downstream surface condenser.

Advantages

• Separation of process and cooling medium
• Decades of experience, proven technology
• Körting places high demands on the quality of its own manufacturing at the Hanover location

Disadvantages

• Process and cooling water-sided pollution possible

Deliverable options

• Controllable vacuum systems with surface condensers
• Vacuum systems with surface condenser and liquid ring vacuum pumps
• Vacuum systems with surface condenser for non-barometric installation
• Vacuum systems with vertical surface condensers
• Process-vapor operated ejectors with surface condensers
• Non-metallic vacuum systems (Graphite, PTFE)