Matches 1 - 30 out of 30


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8980060 Biomass hydrothermal decomposition apparatus, method thereof, and organic material production system using biomass material  
A biomass hydrothermal decomposition apparatus includes, a biomass feeder (31) that feeds biomass material (11) under normal pressure to under increased pressure, a hydrothermal decomposition...
8852395 Method and arrangement for adding treatment liquors to cellulose material in a down flow vessel  
The method and arrangement are for adding treatment liquid to comminuted cellulose material, preferably wood chips, during the manufacture of chemical pulp in a continuous process. The process is...
8617355 Method and apparatus for mixing a lignocellulosic material with enzymes  
A method to treat a lignocellulosic material including: performing a steam explosion reaction on the lignocellulosic material and discharging a slurry from the; adding an alkali material to the...
8177937 Method and an apparatus for controlling a flow of pulp suspension  
Apparatus and methods for controlling the flow of a pulp suspension from a container in which the pulp is processed or stored are disclosed. The container is pressurized to a first pressure and...
8157964 Installation for implementing a method for producing paper pulp, lignins and sugars and production method using such an installation  
The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure, characterized in that it comprises means...
8052843 System and a method for the steam pre-treatment of chips in association with the production of chemical cellulose pulp  
The vessel in which the chips are pre-treated with steam (ST) is provided with a ventilation channel at the top of the vessel for the leading away of weak gases to a weak gas system (NCG). A...
7749354 Digester wash extraction by individual screen flow control  
A continuous digester comprises a wash zone having a plurality of individual wash screens disposed about an inner wall of the digester for the withdrawal of co-current downflow liquor from the...
7736467 Screen assembly for a pulp digester  
A pulp digester includes a vessel having an inlet, an outlet and a wall extending between the inlet and the outlet, the wall of the vessel having a curved interior surface. The digester includes a...
7713382 Method and apparatus for processing wood chips  
A method and an apparatus for processing wood chips, wherein the wood chips are treated with steam in a gas removal apparatus. The condensate formed in the gas removal apparatus is removed from...
7658820 Digester wash extraction by individual screen flow control  
A continuous digester comprises a wash zone having a plurality of individual wash screens disposed about an inner wall of the digester for the withdrawal of co-current downflow liquor from the...
7125472 Slotted screen for digester  
A screen panel for a wood-chip digester, comprises a screen plate having a plurality of slots therein that are curved in the form of an arc. Each slot has a generally parallel-sided middle portion...
6911118 Pulper for producing paper pulp from waste paper  
A pulper for producing paper pulp from waste paper containing undesired scrap particles includes a container (1) forming a chamber (4) defined by a bottom wall (5) and a cylindrical...
6841042 Feeding comminuted fibrous material using high pressure screw and centrifugal pumps  
A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability,...
6716307 Process and system for the removal of scale build-up  
A method to remove scale build-up in a vessel having at least one screen is described and involves placing a cover inside the vessel such that it is located beneath at least one screen to separate...
6447645 Feeding cellulose material to a treatment vessel  
A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer...
5942084 Process for the separation of sulphides from pulping liquors using amphoteric resins  
A process using an amphoteric ion-exchange resin, also known as a "snake-cage polyelectrolyte" resin separates kraft white liquor into sulphide-rich and caustic-rich components. The sulphide-rich...
5800674 Method and apparatus for improving a batch cooking process  
A method and apparatus for improving a batch cooking process, e.g. providing about 7% increase in discharge time, are provided. The invention is especially suitable for improving modern...
5770072 Multiple inlet valve with means to isolate each inlet individually and direct a reverse flow therethrough  
The invention relates to a valve arrangement which can preferably be used in connection with a removal system comprising digester screens for digester liquids in cellulose digesters. The valve is...
5547545 Digester temperature distribution control system  
A digester temperature distribution control system comprises an optical fiber type temperature measuring unit utilizing the Raman scattering effect, reference temperature measuring unit, reference...
5503711 Method of rehabilitating a wood pulp digester  
A method of rehabilitating a wood pulp digester, comprising applying to an interior surface of the digester wall a tacky silicone rubber layer, and then applying vertical strips of metallic sheet...
5114540 Apparatus for chemical treatment of lignocellulosic materials  
An apparatus for chemical treatment of lignocellulosic materials comprises two concentric compartments, the inner one is used for chemical reaction whereas the outer is used for generation of hot...
5034095 Apparatus and process for the delignification of cellulose pulp  
A cellulose pulp slurry is delignified in an apparatus comprising a vertical cylindrical barrel chamber, a cone-shaped bottom chamber connected to the barrel chamber and having a circular inlet...
4975148 Cold blow system for batch production of pulp  
A method and system for cooling pulp discharged from a batch type digester and recovering heat from it. A stream of pulp together with spent cooking liquor is discharged from a batch digester to a...
4556452 Process and apparatus for producing pulp  
A process and apparatus for producing pulp from impregnated cellulose-containing starting materials such as wood, straw, grass, waste materials etc. in a compacting apparatus comprising a shell...
4201745 Autoclave for carrying out of material conversions under high temperatures and high pressures  
A digester vessel for containing material to be subjected to a high temperature pulsating high pressure process with an inner tubular enclosing metal wall of a helically corrugated sheet material...
3781188 EXPERIMENTAL RESEARCH PULP DIGESTER ASSEMBLY  
Method of processing, digesting, or pulping samples of e.g. a body of wood chips under conditions reproducing experimental or production runs with precision. Samples are processed in sealed...
3404065 Apparatus for cleaning and fractionating a pulp suspension  
3009865 Anodic protection of kraft digesters  
2950757 Apparatus for avoiding digester corrosion  
2910342 Corrosion resistance apparatus for use with acid chlorite solutions  

Matches 1 - 30 out of 30