Digester
Level detection and pressure measurement in the digester
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过程数据
测量任务:
Point level detection and pressure measurement
测量点:
Digester
测量范围至:
8 m
介质:
Wood chips in cooking liquor
过程温度:
+160 … +170 °C
过程压力:
+6 … +8 bar
特殊挑战:
Insulated vessel
应用范围
In the digester, the action of chemical dissolution removes the lignin binder, thereby exposing and freeing the cellulose fibres. During the cooking process according to the alkaline sulphate method, the fibres are fed into the digester by means of steam pressure. To enable fully automatic operation of the digester, a point level detection of the filling is required. The vessel pressure also needs to be carefully monitored throughout this process.
您的获益
Reliable
Reliable operation despite extreme process conditions
Cost effective
Measuring system can be installed without invasive work on the vessel wall and insulation
User friendly
Simple retro installation
建议的产品
POINTRAC 31
Radiation-based detection of maximum level for controlling the filling process
- Enables automated operation of the digester
- Non-contact measurement right through the vessel wall
- Maintenance-free operation
量程 - 距离
-
过程温度
-40 ... 60 °C
过程压力
-
VEGABAR 81
Pressure transmitter for pressure measurement in the digester
- Pressure measurement in aggressive media and high temperatures
- Long-term chemical resistance
- Resistant to pressure surges during emptying
量程 - 距离
-
量程-压力
-1 ... 1000 bar
过程温度
-90 ... 400 °C
VEGASOURCE 31
The source holder serves as a housing for the radiation capsule and protects it from external influences
- Minimal space requirements and simple mounting
- Safety and reliability ensured through pneumatic operation of the source shutter
- High integrity shielding allows use without a restricted access area
环境温度
-20 ... 80 °C
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