400℃ liquid pipeline
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Using steam at 170°C to heat liquid pipelines at 400°C should theoretically not be possible. However, upon on-site inspection, it was found that they indeed use this method, and it does not affect production or product quality. Please discuss this issue – I’m quite puzzled
The pipeline was preheated in advance, and it stopped working after the material started flowing through it
On the one hand, the pipeline is preheated in advance; on the other hand, steam at 170 degrees is used for heating, and its insulating effect is significantly better than that of insulation materials. Although the temperature of the material will drop upon arrival at the destination, it will still remain within the desired temperature range, or it can be reheated to raise the temperature again
Liquid pipelines at 400° should be equipped with high-temperature heat tracing to maintain a certain temperature in the pipes; it is very dangerous when the pipes are at low temperatures when no liquid is flowing through them!