Title:
蒸解槽用プロファイルバースクリーン
Document Type and Number:
Japanese Patent JP6534232
Kind Code:
B2
Abstract:
The invention relates to an improved profile bar screen for draining treatment liquor from a suspension of comminuted cellulose material and treatment liquor in an essentially cylindrical digester vessel. According to the invention is a profile bar screen designed with horizontal support arches 11 with integrated support shoulders 12 only at the outer ends of the support arch which support shoulders rest against the inside of the vessel wall 1. The invention combines the techniques from self-supporting screens with support members of weaker screen designs, avoiding need to make any additional welds in the classified pressure vessel wall of the digester. Installation of new screens in compartments previously equipped with blind plates in checkered screen rows may be done quickly and at less costs during shorter down time of digester.
Inventors:
Otson, Pearl-Andesh
Soderman, Yak
Soderman, Yak
Application Number:
JP2017511825A
Publication Date:
June 26, 2019
Filing Date:
August 27, 2015
Export Citation:
Assignee:
Valmet Activolag
International Classes:
D21C7/14; D21C7/08
Domestic Patent References:
| JP8503030A | ||||
| JP7157991A |
Foreign References:
| WO2013105888A1 | ||||
| US20050284594 | ||||
| US6889851 | ||||
| US5827401 |
Attorney, Agent or Firm:
Takao Hamano
Satoshi Yagita
Kenji Inagaki
Satoshi Yagita
Kenji Inagaki