Open AccessHigh-intensity drying processes -- Impulse drying: Report 14 (progress report). Status of the pilot-scale research program
Author(s) -
David I. Orloff
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/362519
Subject(s) - impulse (physics) , process engineering , pilot plant , schedule , work (physics) , computer science , manufacturing engineering , paper machine , cabin pressurization , mechanical engineering , engineering , waste management , physics , quantum mechanics , operating system
As of April 1998, the project was behind on schedule. This was as a result of the need for additional process development work. Work has focused on evaluating nip decompression and post-nip depressurization techniques as used on the Beloit X2 pilot paper machine. The authors have also concentrated on implementing impulse drying technology on Beloit`s No. 4 and No. 2 pilot paper machines. Experiments on Beloit`s X4 pilot paper machine demonstrated that roll coating durability problems have been solved. They also showed that further development work on sheet picking, implementation of delamination suppression techniques and CD temperature control are necessary in order to ensure success on the X4 machine. Experiments on the Beloit`s X2 pilot paper machine were carried out to resolve issues identified on the X4 machine. Two methods of implementing press nip decompression were investigated. The results confirmed that the technology can be used to increase impulse drying operating temperatures. The work also led to the development of techniques to minimize picking