Combined cylinder-impingement drying will improve the drying rate of paper and it has also positive effect on paper quality. This paper reports the latest findings of experimental and numerical simulation work. A dynamic laboratory-scale test rig, equipped with an air-heated cylinder having diameter of 400 mm and an impingement hood, was constructed to study combined cylinder-impingement drying. Paper temperature distributions in thickness-direction and evaporation rates were determined. Three cases were compared: conventional cylinder drying, impingement through the fabric and combined cylinder-impingement drying. The combined drying yielded the highest drying rate. Due to impingement, the paper temperature decreases compared to the conventional cylinder drying. This implies better utilisation of the heat from the cylinder, which was also measured. The computer simulations confirmed the experimental results.
|Number of pages||8|
|Publication status||Published - 2002|
|MoE publication type||Not Eligible|
|Event||13th International Drying Symposium, IDS 2002 - Beijing, China|
Duration: 27 Aug 2002 → 30 Aug 2002
|Conference||13th International Drying Symposium, IDS 2002|
|Period||27/08/02 → 30/08/02|
- paper machines
- impingement drying
- drying rate
- paper quality
Timofeev, O., Keränen, J., Milosavljevic, N., & Talja, R. (2002). Experimental research on the combined contact-impingement drying of paper on the dryer cylinder. Paper presented at 13th International Drying Symposium, IDS 2002, Beijing, China.