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This is an air removal system in a power plant. The unit removes air and gas from the steam side of the condenser. It consists of three liquid rings vacuum pumps (RVS 40), mounted on a skid, including piping, valves, non-condensable tank separator, seal water cooler, controllers and ejectors for the first stage. All these components are controlled and monitored directly from the control room or through remote control.
The pumps are supplied with an ejector with bypass, in order to reach the requested operation conditions even with sea water as cooling liquid. Service liquid is cooled through a heat exchanger avoiding all contact contaminations between cooling and service liquid. A special alloy is used in the machine to validate its use with sea water as cooling liquid. The package capacity is 51 kg/h of saturated air at a pressure of 40 mbar and equipped with three motors of 55 kW.
In one of the largest desalination plants in the world in Jebel Ali in Dubai, which produces about 450 million cubic meters of drinking water per year, Robuschi supplied 4 customized liquid ring compressor units equipped with RVS 21 / SG pumps and special accessories: tanks with separator function, safety valve, automatic drain pump.
These units operate with a flow rate of 346 mᶟ / h and are used in the distillation process of sea water for the pumping of CO2 in the remineralisation phase.
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