Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD OF MANUFACTURING MOLTEN KRAFT PULP
Document Type and Number:
Japanese Patent JP2014074252
Kind Code:
A
Abstract:

To provide a technology for efficiently manufacturing a high quality molten kraft pulp from a coniferous tree material.

A molten kraft pulp is manufactured by processes including (a) a process of hydrolyzing hemicellulose part contained in a wood chip by adding water to conifer wood chips, (b) a process of collecting the wood chips by washing the treated conifer wood chips, (c) a process of manufacturing a pulp by a craft digestion of the collected conifer wood chips, and (d) a process of applying an oxygen delignification treatment to the kraft digested pulp, and the high quality molten kraft pulp is obtained by adjusting a viscosity after the kraft digestion (measured according to Tappi testing method T230om-89) to 9 to 16 cps, and the viscosity after the oxygen delignification to 9 to 12 cps.


Inventors:
ONO ATSUSHI
TAKAYAMA MASAHITO
SUYAMA KENICHIRO
KUROSU KAZUHIRO
Application Number:
JP2012223554A
Publication Date:
April 24, 2014
Filing Date:
October 05, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JUJO PAPER CO LTD
International Classes:
D21C3/02; D21C3/26
Domestic Patent References:
JPS4834522B11973-10-22
JPH09507697A1997-08-05
JP2009213389A2009-09-24
JP2013227705A2013-11-07
Other References:
JPN7017000870; Herbert Sixta: Handbook of Pulp Volume 1, 20080130, PP. 351-355
Attorney, Agent or Firm:
Junko Oda
Atsushi Yamada