Matches 51 - 100 out of 226 < 1 2 3 4 5 >


Match Document Document Title
6418963 Pipe attachment  
A pipe attachment comprises a pipe elbow that is tightly attached to a stand pipe so that the diameter of the stand pipe is greater than the diameter of the pipe elbow.
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...
6375795 Minimization of malodorous gas release from a cellulose pulp mill feed system  
The release of malodorous TRS-containing gases from a comminuted cellulosic fibrous material feed system for a digester is minimized utilizing a particular arrangement associated with a pressure...
6368453 Chip feeding to a comminuted cellulosic fibrous material treatment vessel  
In the feeding of a slurry of comminuted cellulosic fibrous material to a digester (continuous or batch) in the production of chemical pulp, one of the tanks used in the feed system (which...
6340409 Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release  
A pulp bleaching line has an initial stage using gaseous bleaching reagent followed by its subsequent stages without intervening washing or pumping steps. The pulp is transported from the initial...
6332542 Tramp material removal from pulp feed system  
Dense, tramp material, is efficiently separated in a comminuted cellulosic fibrous material feed system, for example in a chemical cellulose digester feed system, in a simple but effective matter....
6315128 Tramp material removal from pulp feed systems  
Dense, tramp material, is efficiently separated in a comminuted cellulosic fibrous material feed system, for example in a chemical cellulose digester feed system, in a simple but effective matter....
6280575 Frusto-conical outlet for a cellulose material treatment vessel  
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...
6267847 Pulper for a stock preparation system  
A pulper in a stock preparation system includes a housing with a fiber inlet, at least one water inlet, at least one outlet and an inner chamber. A plurality of stationary pulping foils are...
6210532 Means for conveying pulp having differential pressure control  
A walled passageway, having openings therein only at opposite, inlet and outlet ends thereof, has a shaft journalled therein. The shaft carries a screw thereon for moving shredded pulp through the...
6174411 Continuous digester with inverted top separator  
A cellulose pulp continuous digester (e.g. for producing kraft pulp) is operated so that it has an inverted top separator and is hydraulically filled to above the level of the inverted top...
6143134 Chip spreader for air-lock feeder  
By establishing a relatively flat, for example, non-sharply conical, top profile of wood chips in a treatment vessel (such as a chip bin), the chips will be more uniformly steamed or otherwise...
6120646 Feeding system of feeding a cellulose material  
A feeding system for feeding comminuted cellulose containing material and liquid to a continuously operating treatment vessel. The feeding system comprises a chute, operating at a first pressure,...
6109312 Air evacuation insert for wood chip digester  
An insert is bolted to the inlet of a wood chip digester to provide air exhaust during chip loading, and over pressure relief during chip processing. The insert has an upper flange which connects...
6098658 Method and apparatus for filling a pulp tower  
Pulp is effectively and simply fed into a pulp tower using at least one feed pipe having a number of openings that are spaced different distances from the bottom of the pulp tower. The opening...
6096170 Pressurized peroxide bleaching vessel having a rotatable scraper arm and cleaning device  
PCT No. PCT/SE97/00729 Sec. 371 Date Dec. 22, 1997 Sec. 102(e) Date Dec. 22, 1997 PCT Filed Apr. 30, 1997 PCT Pub. No. WO98/49391 PCT Pub. Date Nov. 5, 1998A pressure vessel 1 with an output...
6086717 Separator having a screen basket disposed in a digester  
A new and improved way of continuously cooking fiber material, wherein temperatures and alkaline levels are controlled to be maintained within specific levels in different zones of the digesting...
6076956 Device for distributing suspensions in a container  
The invention refers to a device for distributing suspensions, particularly pulp suspensions, in a tank 1, particularly a bleaching tower. It is characterized by a disc 6 being provided near the...
6051109 Apparatus for distributing fluffed pulp into a static bed reactor  
A process and apparatus for treating and particularly bleaching pulp contacts a pulp with a gaseous reaction medium in a reactor tower. The pulp is fluffed and refined before being added to the...
6024837 Low temperature gas phase continuous digester  
A cellulose pulp continuous digester (e.g. for producing kraft pulp) is operated so that it has the advantages of a hydraulic digester yet has a gas-filled zone over the liquid level. A slurry of...
5985096 Vertical pulping digester having substantially constant diameter  
In a vertical digester for producing chemical pulp, or other vessel for treating a slurry of comminuted fibrous cellulosic material, the cost of manufacturing the shell is significantly reduced by...
5968314 Chip feeding for a digester  
A chip feeding system for a continuous digester provides for a greater rate of delivery of chip slurry to the digester, and is much less expensive than conventional chip feeding systems, typically...
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...
5913458 Apparatus for adjusting the axial position of a rotary feeder  
Apparatus for adjusting the axial position of a rotatable feeder (2) in a charger for sluicing lignocellulose material and, if appropriate, liquid from a first space, with a first pressure, to a...
5863389 Pulp bleaching reactor for dispersing high consistency pulp into a gaseous bleaching agent containing ozone  
An apparatus for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine. The bleaching reactor is a horizontal vessel having a central rotatable shaft which...
5851350 Method and apparatus for pumping cellulose pulp  
Pumping of medium consistency cellulose pulp is effected from stand pipes or like small sized pulp vessels to which pulp is normally discharged from storage towers, treatment towers, washers,...
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...
5795438 Method and apparatus for feeding multiple digesters  
A number of distinct parallel digesters are fed with chips from a common steaming vessel. After steaming the chips are slurried and pressurized, and substantially simultaneously the steamed,...
5783037 System and method for operating a pulp mill  
A pulp mill includes a digester which contains a raw material, a digesting medium, and a source of steam. Oxygen is injected into the steam line, at a point which minimizes exposure of the oxygen...
5772844 Process distributing fluffed pulp into a static bed reactor for gaseous treatment  
A process and apparatus for treating and particularly bleaching pulp contacts a pulp with a gaseous reaction medium in a reactor tower. The pulp is fluffed and refined before being added to the...
5766418 Handling fibrous material used to produce cellulose pulp  
Untreated wood chips are fed to treatment, e.g. steaming at substantially atmospheric pressure, using a mechanical conveyor. Steaming may be accomplished utilizing a vertical chip bin with one...
5762760 Reactor for treating pulp with a gas  
The reactor comprises a pressurized vessel having an outlet member at its top and further including a blow line. The outlet member includes a housing that is in fluid communication with the vessel...
5753075 Method and 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,...
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...
5736006 Method and apparatus for pulping with controlled heating to improve delignification and pulp strength  
Low temperature steaming and slurrying of wood chips results in significant improvement in treatment, the chips being maintained at a temperature below 110° C. (more desirably at about 105° C. or...
5736005 Scraper device for a continuous digester  
The present invention relates to a scraper device, preferably a bottom scraper arranged at the bottom of a continuous digester for pulp production, which scraper comprises at least one scraper arm...
5711600 High consistency pulp tower with a parting member and the introduction of dilution liquid  
Cellulose pulp is discharged from the dilution zone of a high consistency pulp tower at a substantially even volume flow and a substantially steady pulp consistency by mounting a particular...
5700355 Chip feeding for a continuous digester  
A chip feeding system for a continuous digester provides for a greater rate of delivery of chip slurry to the digester, and is much less expensive than conventional chip feeding systems, typically...
5698079 Arrangement for spreading paper pulp in a container  
The present invention relates to an arrangement for spreading paper pulp in a container for storing or treating the pulp, which arrangement comprises an inlet for supplying the pulp to a rotatably...
5688369 Method and device for feeding out fibre pulp  
The invention relates to a method and a device for feeding out fiber pulp over an overflow rim (2) at the upper end of a cylindrical container (1), through which the pulp, which is suspended in...
5674360 Method and apparatus for steam packing/presteaming a batch digester  
A batch digester loading method is described wherein a flow stream of steam enters the digester near the bottom thereof as a flow stream of wood chips enters through the top filler neck. Steam...
5635025 Digester system containing a single vessel serving as all of a chip bin, steaming vessel, and chip chute  
In a continuous digester system the chip feed equipment is greatly simplified by substituting a single vertical vessel for the conventional chip bin, steaming vessel and chip chute. An outlet at...
5632859 Intergral pulp mill and method of constructing an integral mill  
A mill for the processing and production of wood pulp is contained substantially entirely within a single, integral structure that defines a unitarily-covered space substantially bounding and...
5628873 Chip bin assembly including a hollow transition with one dimensional convergence and side relief  
A chip bin construction, ideally suited for bins having a maximum diameter of twelve feet or more, uniformly discharges chips, after steaming, without the necessity of a vibratory discharge. A...
5622598 Chip pumping to a digester  
A system for feeding wood chips entrained in cooking liquor to a high pressure feeder connected to a continuous digester includes a vertical treatment (e.g. steaming) vessel, a metering device...
5589036 Controlling pulp flow in an upflow pulp treatment tower  
The flow patterns of the wood/paper pulp in a paper pulp treatment tower are controlled to provide for even flow through and discharge of the pulp from the upper end of the tower. Flow-altering...
5547546 Chip bin with steaming control and a gas vent containing a vacuum and pressure relief device  
A chip bin for wood chips in a continuous digester system includes internal steaming that is controlled in response to both the interior temperature across the level of chips in the bin, and the...
5538597 Apparatus for the discharge of a mass tower  
An apparatus for the discharge of a mass tower containing medium to high consistency pulp and operable without the need for further dilution includes a vessel for storing the pulp; a suction duct...
5520783 Apparatus for bleaching high consistency pulp with ozone  
An apparatus and method for bleaching high consistency lignocellulosic pulp using ozone supplied in an ozone containing gas. The bleaching reactor apparatus according to the invention is a...
5500083 Method of feeding cellulosic material to a digester using a chip bin with one dimensional convergence and side relief  
A chip bin construction, ideally suited for bins having a maximum diameter of twelve feet or more, uniformly discharges chips, after steaming, without the necessity of a vibratory discharge. A...

Matches 51 - 100 out of 226 < 1 2 3 4 5 >