Title:
薬剤増強洗浄法を用いて行う木材チップの加水分解と蒸解のための二槽反応器システムと方法。
Document Type and Number:
Japanese Patent JP5346493
Kind Code:
B2
Abstract:
A processing system for converting cellulosic material to pulp comprises a first pressurized reactor vessel (10) operating at a pressure above atmospheric pressure. The first reactor vessel (10) includes: a material input receiving cellulosic material and a material discharge (56) for the material, wherein the cellulosic material flows from the material input to the material discharge (56); a heat energy input port in an upper portion of the first reactor vessel (10); an extraction screen (48) having an outlet for extracting hydrolysate and liquid from the first reactor vessel (10); a first region of the first reactor vessel (10) between the material input and the liquid extraction screen (48), wherein the first region is maintained at a hydrolysis temperature in the cellulosic material; a wash liquid input (52) to the first pressurized reactor vessel (10) and below the extraction screen (48), wherein the wash liquid input (52) is connected to a source of wash liquid including a source of cool wash water (50) and a source of at least one of sodium hydroxide and essentially sulfur free white liquor (82); and a second region of the first reactor vessel (10) between the liquid extraction screen (48) and the discharge (56) in which a temperature is below the hydrolysis temperature and the hydrolysis reaction is substantially suppressed. A transport pipe (62) provides a flow conduit from the discharge (56) to a second reactor vessel (12) which is a continuous digesting vessel. The continuous digesting vessel (12) receives the cellulosic material discharged from the first reactor vessel (10).
Inventors:
Nam Hee Shin
Bertil Stromberg
William Jay Khan
Wengeslav Kirov
Bertil Stromberg
William Jay Khan
Wengeslav Kirov
Application Number:
JP2008132885A
Publication Date:
November 20, 2013
Filing Date:
May 21, 2008
Export Citation:
Assignee:
Andritz Incorporated
International Classes:
D21C1/06; D21C7/00
Domestic Patent References:
| JP58126387A | ||||
| JP50053603A | ||||
| JP2003227085A | ||||
| JP11241285A | ||||
| JP9507697A | ||||
| JP2003328286A |
Attorney, Agent or Firm:
Shizuo Nakamura