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Match Document Document Title
8992735 Method and device for the hydrolysis of preferably solid organic substrates  
The invention relates to a device for the hydrolysis of preferably solid organic substrates, in particular of energy crops and plant residues, with a collection vessel (1) for receiving the...
8986504 Digester apparatus  
A digester apparatus is provided for delignifying wood chips to form wood pulp comprising: a vessel, a first downcomer, an outer fluid supply downcomer and structure defining an insulating region...
8894819 In-line drainer with shaped screen slots  
An in-line drainer or liquid separator for draining liquid from a moving black liquor slurry stream having a screen basket mounted in the internal chamber of the in-line drainer. The screen basket...
8888954 Feeding system having pumps in parallel for a continuous digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel at the bottom of a pre-treatment vessel and a stirrer is provided in direct connection to inlets to...
8888959 Feeding system comprising pumps in parallel for a continuous digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel in the bottom of a pre-treatment vessel and a liquid level of at least 20 meters is established. The...
8834633 Pre-treatment of cellulosic material  
A method of pre-treating a cellulosic material before hydrolysis is provided. The method comprises the steps of: impregnating the cellulosic material with a reactive water-soluble gas, such as...
8821691 Reactor vessel having single convergence sidewall plates  
A reactor vessel including: an upper inlet and a bottom discharge; a generally vertically oriented sidewall between the upper inlet and bottom discharge, wherein the sidewall defines a perimeter...
8728278 Feeding system having pumps in parallel for a continuous digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel in the bottom of a pre-treatment vessel and a liquid level of at least 10 meters is established. The...
8709212 Feeding system having parallel pumps for a continuous digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel at the bottom of a pre-treatment vessel. The transfer to the top of the digester takes place without...
8709211 Feeding system having pumps in parallel for a continuous digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel at the bottom of a pre-treatment vessel and a stirrer is provided in direct connection to inlets to...
8702909 Feeding system having pumps in parallel and individual flows for a digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel at the bottom of a pre-treatment vessel. Each pump has its own independent transfer line extending to...
8574402 Feeding system having pumps in parallel for a continuous digester  
The feed system is for a continuous digester where at least two pumps are arranged in parallel at the bottom of a pre-treatment vessel. The outlets of the pumps are combined at a merging point...
8366876 Method and arrangement for improving a washing step after completed cooking in a continuous digester  
The method and an arrangement are for the improvement of a wash after completed digestion in a continuous digester for the production of cellulose pulp. The softened chips are exposed to a...
8366875 Method and arrangement for wash after completed digestion in a continuous digester for the production of cellulose pulp  
Digested softened non-defibrated chips are fed out from a bottom of a digester. The chips are fed out under an influence of a bottom scraper at the bottom of the digester and through an outlet tap...
8303769 Arrangement, system and method for treatment of cellulose pulp  
Apparatus for screening cellulose pulp streams is disclosed including first and second screens contained in a housing, and a primary inlet for directing the cellulose pulp stream into the housing,...
8197639 Vapour phase digester and a method for continuous cooking  
The system and method reduce the liquid/wood ratio at the top of a vapor phase digester in a continuous digester plant. Chips that are to be cooked in the vapor phase digester are fed as a mixture...
8057639 System and method for preextraction of hemicellulose through using a continuous prehydrolysis and steam explosion pretreatment process  
A system has been developed for pretreating cellulosic biomass feed stock including: a first pressurized reactor receiving the feed stock, wherein the feed stock undergoes hydrolysis in the first...
7998310 Method for impregnating chips  
A method for the impregnation of untreated chips during the manufacture of chemical pulp. The untreated chips are fed without preceding steam treatment into an impregnation vessel that has an...
7971321 Hinge and an electronic device with the hinge  
A hinge is mounted between a cover and a base of an electronic device. A lid covers the hinge and is attached securely to the base. The hinge has an arced surface and a rotating shaft. When the...
7931779 Screening apparatus and screen basket for screening pulp suspensions  
A screen for the screening of pulp suspensions is disclosed, including a screen basket, a rotor for providing pressure and suction pulses in the suspension to be screened along the screen basket,...
7867363 Continuous digester system  
In a continuous digester system the digester system is greatly simplified by using a single vertical atmospheric vessel, replacing the conventional chip bin, steaming vessel, chip chute, high...
7846298 Outlet device for a pressurized vessel having a combined radial bearing and hydraulic drive motor  
An outlet device and motor assembly for a pressured vessel is disclosed, where the assembly includes: a generally vertical drive shaft extending below and through the vessel and coupled to a...
7799173 Screen plates having diagonal slots with curved inlets for a digester  
A screen plate for a cellulosic material puling vessel, the screen plate including: slots having curved inlet corner edges adjacent an inside surface of the screen plate and facing a pulp flow.
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...
7713383 Arrangement for feeding a slurry of chips and liquid  
The method and arrangement is for the feed of a chips suspension from one vessel to a subsequent digester in a continuous cooking process for the production of chemical cellulose pulp. The vessel...
7658818 Method for converting a digester for use as a gas phase and hydraulic phase continuous digester  
A method for converting a vapor phase continuous digester to a hydraulic digester including the steps of: operating the vapor phase digester in a vapor phase mode wherein a chip slurry enters the...
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...
7641767 Apparatus for treating a fibrous suspension  
An apparatus and method serves, e.g., to deaerate, clean or screen a fibrous suspension and is provided with a closed housing and a rotor arranged centrally therein. The rotor puts at least a part...
7566380 Continuous digester with fluid circulation  
The arrangement concerns an improved design for at least one of the cooling, dilution and washing at the bottom of a continuous digester for the production of cellulose pulp. By arranging at least...
7556713 Method and system for feeding cellulose chips to a high pressure continuous cooking system  
A method for feeding a cellulosic fibrous material to a high pressure processing vessel including: pressurizing a low pressure flow of the fibrous material in a high pressure transfer device;...
7491296 Multi-stage screening apparatus, screen basket and method for screening pulp suspensions  
Screening apparatus for screening pulp suspensions is disclosed comprising a screen basket dividing the interior of the housing into a central chamber and a single outer annular chamber. The...
7470347 Device and method withdrawing cellulose pulp from a container  
This is a device and a method for withdrawing cellulose pulp with a pulp concentration of 8-14% from a cylindrical storage tower. The storage tower has a plane bottom and with a diameter that...
7455749 Gas phase continuous digester having an inverted top separator with liquor injection  
A method for adding cooking liquor into a vapor phase continuous digester for producing chemical cellulose pulp from cellulose chips including: introducing a slurry of the cellulose chips from a...
7387708 Process for feeding pulp into a blow tank or storage tank  
A method and apparatus for treating pulp in connection with a blow tank or a storage tank. The pulp is discharged from a batch digester and fed either to the upper or the lower part of a blow...
7309401 Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester  
A continuous digester for producing chemical cellulose pulp from cellulose chips including: a digester vessel with an upper section attached to a top separator and said vessel at least partially...
7285179 Continuous digester for cellulose pulp including method and recirculation system for such digester  
The continuous digester is for producing chemical pulp to a process for operating this digester and to a feedback system for the cooking liquid. By means of implementing cooking zones 1st, 2nd,...
7229526 Method and apparatus for the feeding of fibers  
A system for feeding fibres from a fibre separation step at a first pressure to a drying step at a second, lower pressure, the system comprising a sluice feeder (3) provided between the fibre...
7229524 Feeding arrangement for feeding of chips to chip bins  
The invention relates to a feed arrangement for feeding chips to chip bins (1) in the production of cellulose pulp in continuous digesters (16), in which the chip bin is constituted by a treatment...
7060162 Chip bin  
A chip bin for a digester has an upper part through which chips fall freely from an inlet and a lower part within which the chips remain until they are fed to a digester. Steam orifices strike...
7001483 Apparatus for making carboxylated pulp fibers  
An apparatus for carboxylating wood pulp which utilizes the wood pulp bleach plant and the method of carboxylating the pulp which takes place in the bleach plant.
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,...
6719878 Method for avoiding mechanical damage of pulp  
A method for producing chemical pulp from cellulosic material by means of alkaline cooking, including cooking the material to pulp at cooking temperature in a digester, reducing the temperature at...
6673201 Top separator with intraseal for digester vessel in a pulp or fiber processing system  
A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a...
6569289 Cellulose slurry treating systems for adding AQ to a cellulose slurry in the substantial absence of alkali  
Chemical pulp is produced from a slurry of comminuted cellulosic fibrous material using a beneficial additive such as AQ, or polysulfide. In the first treatment zone the effective alkali...
6551462 System for feeding comminuted fibrous material  
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,...
6497791 Apparatus for pre-treatment of wood chips  
A pre-treatment device for wood chips for pulping comprises a tube through which the wood chips fall into a digester. Steam is injected into the tube through rings of nozzles, which are angled...
6491188 Revolver valve for discharging a pressurized vessel in a fiber stock preparation system  
A revolver valve includes a housing with a cylindrical inner chamber, and a pair of end caps respectively attached to each end of the housing. One of the end caps includes an inlet opening and the...
6451172 In-line drainer enhancements  
A drainer for a feed system for a cellulose digester has a substantially open and hollow inlet (devoid of a spiral flow imparter or a like flow restriction) and a substantially annular screen...
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...
6432264 Method of making a vessel assembly for handling comminuted cellulosic fibrous material  
In a cellulose pulp handling vessel having a first diameter material storing or treating portion above a second diameter discharge which is at least 20% less than the first diameter, reduced...

Matches 1 - 50 out of 226 1 2 3 4 5 >