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The system


cylinder drainage
heating system
process control
 

The controlling


Process controlling

The process of paper production requires a contemporaneously controlling of multitude parameters to guarantee the demands on quality and production output. These parameters have to measure and control in real-time concurrent to the production process. Apart from the typical paper machine parameters, like weight, humidity of the paper and machine speed the measured quantity of the steam and condensate system is entering to the process control system of the paper machine. For an optimal output of the paper machine the process control system is automatically interfering in the control loop of the paper machine and keeps the process variables on the fixed control input to allow product specific modulations.
 

Web breakage

In case of web breakage and the lowest steam consumption the process controlling system will sustain the necessary different pressure for the cylinder draining automatically. Emanating features to the condensation system ensures the necessary pressure drop.
 

Condensate preparation

The condensate is collecting by pressure drop and pump stations and then leads to the boiler house. Al condensate pumping stations should be equipped with two pumps whereby one pump should be dimensioned for the maximal condensate mass. The second pump is included as a stand-by-aggregate and guarantees a high availability of the plant.
 

Plant safety

In the event of breakdown of the energy supply, wire damage or missing control signal al steam valves will be shut and the condensate valves will be open. By increase of the steam pressure in the system over the valid working pressure automatic secure valves releases the system by blowing the steam into the atmosphere.
 
   

 

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