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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,...
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...
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...
6966970 Method for supplying washing liquid to a process for cooking cellulose pulp  
The invention relates to a method for supplying washing liquid to a digester (1) for cellulose pulp and a subsequent diffuser washing device (2a, 2b). A high, disturbance-free production capacity...
6755941 Apparatus for loading fibers with calcium carbonate  
For a process and an apparatus for loading fibers contained in a pulp suspension with calcium carbonate, a calcium oxide and/or a medium containing calcium hydroxide is fed to the pulp suspension,...
6733625 Method and apparatus for treating pulp  
The present invention relates to a method of treating chemical pulp in order to optimize the consumption of bleaching chemicals and to improve the quality of the pulp. Especially the invention...
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...
6379504 Apparatus for pulping sawdust  
Chemical cellulose pulp is made from sawdust utilizing a static down-flow retention vessel. By adding steam and cooking liquor to a flow of sawdust a heated slurry, at a cooking temperature of...
6139689 Apparatus for digesting pulp in a displacement batch digester that uses displacement liquor having a sufficient hydrostatic head  
An apparatus and method for use in a displacement batch digesting process is provided which reduces the amount of equipment required to carry out an efficient displacement batch digestion process....
5942088 Apparatus for bleaching high consistency pulp with a gaseous bleaching reagent  
A method and apparatus for bleaching high consistency pulp with a gaseous bleaching reagent. The pulp is shredded and then fluffed in the presence of a contacting gas which includes the gaseous...
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...
5744004 System for feeding a suspension to a pressurized vessel  
System for feeding a suspension, preferably a suspension of chips in a liquid carrier, to a pressurized vessel in a cellulose pulp mill, which system comprises at least one pump (25, 26) between a...
5716497 Method and device for the continuous cooking of pulp  
A novel method and device for the production of pulp by a continuous cooking process is provided wherein hot impregnated chips are fed into the top of a countercurrent steam digester which has a...
5681427 Apparatus for treating pulp produced by solvent pulping  
An apparatus and process for the solvent pulping and washing of pulp using vessels purged of oxygen free gas when the process is arrested or terminated. The washing is accomplished by first...
5650045 Apparatus and method for wood pulp digester  
A continuous pulp digesting apparatus where wood chips and a cooking liquor are directed into a first cooking zone, and a portion of the cooking liquor is extracted at an intermediate region...
5571384 Method and arrangement for the treatment of a fiber suspension  
An apparatus and method for screening pulp after bleaching. The apparatus includes a first bleaching tower for bleaching pulp, a screener for screening and separating the bleached pulp into a...
5413677 Method for producing chemical pulp from hardwood chips  
Chemical pulp is produced from hardwood chips in a simplified manner utilizing a continuous digester. An inverted top separator is provided in the circulatory loop between the high pressure feeder...
5338451 Apparatus for treating pulp  
An apparatus for treating pulp includes an outer casing, a stationary screen surface mounted in the outer casing. A conduit introduces pulp into the interior of the screen surface. An annular...
5236553 Continuous cooking with reduced horsepower and pulp degradation  
In the continuous cooking of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, the material passes upwardly in an impregnation vessel which is within and concentric...
5192396 Process for the continuous digestion of cellulosic fiber material  
A process for the continuous digestion of cellulosic fiber material is described wherein the material is impregnated with liquid in a closed system comprising a concurrent flow zone and a...
5172867 Utilization of a paper pulp digester as a structural support  
A continuous, upright, digester for paper pulp is utilized as a structural support for accessory vessels, such as a chip bin and flash tanks. Generally horizontal steel beams are connected to the...
5164042 Method and plant for producing high-yield pulp from pulp chip material containing lignocellulose  
In a method of producing high-yield pulp from pulp chip material containing lignocellulose the material is treated with steam in a steam treating station (1) for driving air out of the material...
5089089 System for sulfonating mechanical pulp fibers  
A two stage sulfonation system includes a mixing tank, a retention tank, a thickening press, a pressurized vessel, and a liquor recovery press in series relation. A sodium sulfite generation unit...
5059284 Apparatus to displace a digester from both ends  
An apparatus and method for use in a batch digesting process to quantitatively displace fluids in the digester by pumping into the digester under pressure a first volume of displacing fluid at the...
5053108 High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips  
A method and apparatus provide for the continuous digestion of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, with increased sulfidity. When black liquor is...
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...
4915784 Process and apparatus for removing contaminants from pulp digester vent gas  
There is provided a process and apparatus for improving the yield of turpentine collectable from the vent gases emanating from a pulp disgester in a kraft paper pulp Process. The apparatus is...
4762591 Apparatus for reacting lignocellulosic material with a gas phase comprising a nitrogen oxide and oxygen under controlled gas pressure  
Apparatus for reacting lignocellulosic material with a gas phase comprising a nitrogen oxide and oxygen under controlled gas pressure in the presence of water, for example, as a pretreatment...
4693785 Digester having plural screens and means for controlling the liquid withdrawal  
Comminuted cellulosic fibrous material, such as wood chips, are treated in a continuous digester to produce paper pulp or the like in a manner providing completely uniform treatment of the chips....
4684442 Oxygen reactor deaeration tank and system  
A small deaeration tank which may be either at atmospheric pressure on under low pressure or vacuum and a system of operating this tank which allows pulp which has been treated with oxygen to be...
4662993 Bleach system for dissolving chlorine gas into a bleach filtrate  
A bleach system for blending gaseous chlorine with a paper pulp slurry flow stream by mixing the chlorine with a larger quantity of steam prior to blending the chlorine/steam gas mixture with...
4375410 Reciprocating diffuser arrangements in an elongated vessel  
A diffusion washer and/or thickener assembly is provided that is greatly simplified. A number of withdrawal screens and fluid introducing structures are provided supported by spider arms which...
4276167 Diffuser arrangements  
A diffusion washer and/or thickener assembly is provided that is greatly simplified. A number of withdrawal screens and fluid introducing structures are provided supported by spider arms which...
4269656 Wood pulp forming system and method of recovering spent chemicals  
Sorbed sodium ions in the wood pulp are recovered in the washing operation following cooking with the minimum use of pH control acid, thereby reducing cost and any possible undesirable side...
4238285 Digester system for delivering wood chips in an even layer into a digester  
A batch type digester for wood chips in which a stream of wood chips is delivered into the center of the top of the digester tank, while liquor is being delivered through a pair of pipes at the...
4214947 Process for the continuous impregnation of a cellulosic material  
The continuous treatment of a cellulosic material in the form of chips to produce at least partial delignification of the material without true mechanical grinding is effected in apparatus...
4213822 Apparatus for displacement washing of fibrous material suspended in a liquid  
Apparatus for the displacement washing of cellulose fibers suspended in a liquid, as produced by cooking wood pulp in a digester vessel 1. As the fiber suspension settles to the bottom of the...
4133714 Reaction vessel with pulsating means for producing lignocellulose product from crushed vegetable raw materials  
Apparatus for the production of a lignocellulose material from chips, sawdust, chopped plants, bark, small fibres comprising a vertical column with a series of successively-mounted horizontal...
4123318 Three-vessel treatment system  
An apparatus and method for the treatment of cellulosic fiber material with maximum efficiency while minimizing capital costs. Fiber material entrained in digesting liquid is impregnated with the...
4088528 Method and apparatus for grinding chips into paper pulp  
In the continuous production of paper pulp from ligno-cellulose raw material, the raw material is subjected to grinding and/or delignification by passing it in the form of small pieces between...
4062722 Device for treating deformable particles with the counterflowing liquids  
A device for the counterflow treatment of fibrous deformable particles with liquid in stages in a tower. In the tower the particles and liquid flow downward by small movements and the liquid flows...
4002528 Apparatus for processing pulp  
Apparatus for refining digested pulp involving the use of a refiner, preferably two or more refiners in series positioned in the digester blow line to receive washed, digested pulp discharged from...
3947314 Method of treating paper fibers in a stationary screen  
A paper fiber treatment system utilizes a screw revolving in a perforated cylinder as a tailings screen in place of conventional vibratory or other screens to separate undefibered fibrous...
3902962 Liquid separator for lignocellulose containing material  
A liquid separator for de-watering a liquid suspension of lignocellulosic material prior to introducing the same into the reaction chamber where it is treated under elevated pressure. The reaction...
3886034 Process for determining the conditions needed in controllably obtaining sulfate pulp having a predetermined kappa number  
A process is provided for determining the conditions needed in controllably obtaining a predetermined degree of delignification and therefore a predetermined Kappa number in the manufacture of...
3814663 METHOD AND APPARATUS FOR THE CONTINUOUS DIGESTION OF CELLULOSIC MATERIALS  
3807202 CONTINUOUS WASHING APPARATUS FOR PULP STOCK AND THE LIKE  
A washing apparatus for pulp stock or similar fibrous materials in which the stock flow is maintained solely by gravity feed. The stock is washed in an annular chamber by a recirculated...
3679543 CONTROLLING THE COOKING PROCESS IN PULP DIGESTION BY DIFFERENTIAL CONDUCTIVITY MEASUREMENTS  
3587257 BLEACHING SYSTEM INCLUDING A SINGLE,TRIPLE-DECK TABLE WASHER  
3553075 METHOD FOR CONTROLLING THE HYDROXIDE ION CONCENTRATION IN PULP DIGESTION LIQUOR  

Matches 1 - 50 out of 60 1 2 >