Heating and cooling thermo rolls for paper machine wide 3 m, roll temperature 200°C

The station heats thermo oil for the thermo roll of the paper machine calender.Heating bodies built-in the station piping are used for heating; the body power feed input is 50 kW. The station is equipped with an electric switchbox, a pump and measuring & control (M&C) elements. Thermo oil is heated up to 200°C, the thermo roll temperature moves in the range from 90 to 170°C.

The equipment is delivered for paper machine calenders wide up to 10 m and paper machine speed up to 1 500 m/min.

Cooling

The cooling plant is divided into three compact units:

• Air pump cooling station
• Circulation unit
• Cooling tower

Heating options

• • Gas up to 250°C
  • Steam up to 140°C
  • Electric power up to 300°C

The machinery design and safety comply with the EU and EAC industrial standards.

Heating thermo rolls for paper machine wide 3 m, roll temperature 200°C

Thermo oil is heated up to 220°C, the roll temperature is 200°C.

Heating options

• Gas up to 250°C
• Steam up to 140°C
• Electric power up to 300°C

Cooling

The cooling plant is divided into three compact units:

• • Air pump cooling station
  • Circulation unit
  • Cooling tower

The equipment is delivered for paper machine calenders wide up to 10 m and paper machine speed up to 1,500 m/min.

The station includes

• • Air pump
  • Water storage tank with expander
  • Glycol storage tank with expander

The unit includes pumps and heat exchangers. The station is designed for paper machine wide up to 3 m and speed up to 1,500 m/min.

Cooling water

From the storage tank is used in 3 circuits:

• Circuit for cooling water through an evaporiser water/glycol being part of the air pump
• Paper machine rolls cooling circuit
• Circuit of heat exchangers in an independent paper machine roll heating system; the system is not a necessary part of the equipment

Cooling water parameters:

• Fresh water source 3 to 5 bar – connection size G ¾”
• Storage tank with air tank 3 – approx. 2,900 dm

Cooling water

From the storage tank is used in 3 circuits:

• Circuit for cooling water through an evaporiser water/glycol being part of the air pump
• Paper machine rolls cooling circuit
• Circuit of heat exchangers in an independent paper machine roll heating system; the system is not a necessary part of the equipment

Glycol

From the storage tank is used in 3 circuits:

• Air pump circuit
• Plate-type exchanger circuit for warmed and cooling towers
• Plate-type exchanger circuit for paper machine rolls heating system

Glycol parameters:

• Source: commercial container – connection size G ¾”
• Storage tank with air tank 3 – approx. 4,200 dm

Warm water is used for cooling. Its source is another paper mill system.

Instrumental air for fittings drive

• Pressure 5 bar
• Consumption 20 dm /min

Unit main parts

• Air pump
• Exchanger 1
• Exchanger 2
• Dry exchanger