Abstract
A model is presented for calculating the minimum amount of blow-through steam for condensate drainage in paper drying cylinders. Two criteria for cylinder flooding are given. First, the condensate must be lifted from the inner cylinder wall by the decrease in pressure in the siphon inlet. Secondly, the drag force on the drops in the siphon tube must be higher than the centrifugal force acting in the opposite direction. Good agreement has been achieved between the calculated and the experimental gas velocities for the flow of air and water. The equations can be quite easily applied to different siphon designs and to conditions in steam-heated cylinders.
| Original language | English |
|---|---|
| Pages (from-to) | 190-193 |
| Journal | Tappi Journal |
| Volume | 75 |
| Issue number | 10 |
| Publication status | Published - 1992 |
Subject classification (UKÄ)
- Chemical Engineering
Free keywords
- COMPUTATION
- CONDENSATES
- DRAINAGE
- DRUM DRYERS
- EQUATIONS
- MODELS
- STEAM
- THROUGH DRYERS