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| Number | Title | Issue Date |
| 8118171 | Process and device for aerating suspensions The disclosure relates to a process and device for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions which includes a primary and secondary stage. In order to improve ash removal, a washing process is interposed between ... | 02/21/2012 |
| 7690131 | Device for continuous drying of a pulp web A device for continuous drying of a pulp web, particularly a tissue web, with a drying drum (1) and an air circulating system, where the drying drum (1) has a cylindrical shell (9) designed as a honeycombed body with an annular, flexible transit... | 04/06/2010 |
| 7686922 | Process and device for dewatering a fiber web A process and a device for dewatering a fiber web 3, especially a paper web, using vacuum. The vacuum seen by a given unit are of the web is pulsed between a maximum value V and a minimum value. At least one suction box 7 is provided with perforations ... | 03/30/2010 |
| 7648673 | Process for denoxification of off-gases from annealing and pickling lines, and an annealing and pickling line, especially for stainless steel hot or cold strip A process for denoxification of off-gases from annealing and pickling lines, providing for the off-gases from the pickling section to be heated and denoxified by selective catalytic reduction (SCR). In order to secure the meeting of lowest NOx values in the off-gas ... | 01/19/2010 |
| 7597873 | Process and apparatus for the recovery of metal oxide particles A process for the recovery of metal oxides from a solution containing metallic salts by spray roasting of these solutions. The process is particularly suitable for spray roasting spent pickling acids. The process feeds the solution to a reactor for spray roasting of... | 10/06/2009 |
| 7540938 | Method and system for energy savings in TMP by high temperature LC/MC refining of pulp A method for recovering heat from a pulp refining process comprising: discharging pressurized pulp from a high pressure refiner, wherein the pressurized pulp comprises a pressurized slurry of fibers and liquid; introducing at least the liquid from the pressurized pu... | 06/02/2009 |
| 7520961 | Process and device for blending fluid flows The invention relates to a process for blending liquid flows, particularly in the approach system to a paper machine. It is characterized by the individual liquid flows being merged, blended with one another, and degassed, all at the same time. In addition, the inve... | 04/21/2009 |
| 7384512 | Device for stabilizing a paper web The invention relates to a device for stabilizing a paper web, particularly a tissue web, with at least one (web) stabilizer (3, 7) after a drying cylinder (1), where the stabilizer (3) is located directly at the cylinder (1) under the pa... | 06/10/2008 |
| 7384511 | Device for changing the cloth of a paper machine The invention relates to a device for changing the cloth of a paper machine, particularly a tissue machine, for example a TAD (through-air drying) machine, with a number of deflection rolls (3), (4), (5), (6) and at least one cleaning dev... | 06/10/2008 |
| 7363725 | Device for drying paper webs, especially tissue paper webs The invention relates to a device for drying paper webs, especially tissue paper webs, with a dryer cylinder 1 and a dryer hood 2, 3 for blowing hot air onto the paper web. It is mainly characterised by the inlet air parts of the dryer hood 2, 3... | 04/29/2008 |
| 7357847 | Device for drying a paper web A device for drying a paper web includes a structured fabric for carrying the paper web rests during the drying process. A single roll unit includes a suction roll for dewatering the paper web and a press roll for securing the paper web to the structured fabric. The... | 04/15/2008 |
| 7347140 | Screw press for separation of liquid from solid-liquid mixtures especially pulp suspensions Screw press for separation of liquid from solid liquid mixtures, especially pulp suspensions, with a casing with perforations for liquid and a screw shaft provided in it between which a circular gap is formed through which the solid liquid mixture is pressed. Furthe... | 03/25/2008 |
| 7314538 | Process and device for discharging lignocellulose raw materials from a digester and conveying the raw material to a refiner A process for refining lignocellulose raw materials, especially wood chips, saw dust, annual plants or wood waste, includes dewatering the lignocellulose raw materials discharged from a digester, extracting condensate produced during dewatering, and refining the dew... | 01/01/2008 |
| 7296684 | Screen for cleaning a fiber suspension A screen, for cleaning a fiber suspension, includes at least one separating unit containing a housing, a parabolic rotor, a screen basket, an accept chamber, and a reject outlet. The reject outlet is located in the vicinity of the maximum rotor diameter. The screen ... | 11/20/2007 |
| 7296682 | Process for controlling operation of a flotation cell A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(... | 11/20/2007 |
| 7267231 | Process and device for aerating suspensions A process for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions, with one or more stages and/or cells. Each stage/cell has its own separate liquid loop. A cleaner is interposed to improve removal of dirt specks. ... | 09/11/2007 |
| 7261208 | Method and installation for drying sludge Apparatus and method for drying sludge, in particular sewage sludge, by creating a granulate from the dried product. A mixture of a carrier material consisting of recycled sludge which has already been dried and liquid sludge is fed to a dryer 6. The dried pr... | 08/28/2007 |
| 7163622 | Filter The invention refers to a filter 1 with several rotating filter discs 3 mounted on a shaft 2 and which are provided with a porous filter medium. It is characterized by elastomer elements (8, 8′) being mounted on the shaft (2) as ... | 01/16/2007 |
| 7125491 | Screen and process for manufacturing a screen of this kind A flat or cylindrical screen includes rods and rod-bearing supporting elements. The rods have protrusions in the side walls which are received into inversely shaped recesses in a supporting element. The screen is manufactured by bending the supporting elements open ... | 10/24/2006 |
| 7090746 | Process and device for removing water from a mechanical pulp, chemical pulp or paper sheet A process and apparatus for removing water from a mechanical pulp, chemical pulp or paper sheet, carried between top and bottom wires running through a dewatering machine having a first dewatering zone. The apparatus includes at least one suction box positioned down... | 08/15/2006 |
| 7060163 | Device for continuous drying of a pulp sheet The invention relates to a device for continuous drying of a pulp sheet 10, particularly a tissue web, with a drying drum 1 and an air circulating system. It is mainly characterised by the drying drum 1 having a shell 12 with a perforated... | 06/13/2006 |
| 7005037 | Device for detaching a paper web from a wire The invention relates to a device for detaching a paper web 9 from a wire 4, where the pulp suspension is fed in between a wire 4 and a felt 5 by a headbox 2, the wire 4 and felt 5 are guided together over a forming r... | 02/28/2006 |
| 6998056 | Process and device for aerating a liquid with gas Apparatus and process for aerating a liquid with gas, the apparatus comprising a pressure vessel including a lower section containing the liquid and an upper section containing a volume of the gas. A pressure connection in the upper section of the pressure vessel ad... | 02/14/2006 |
| 6946105 | Process and apparatus for the recovery of metal oxide particles A process for the recovery of metal oxides from a solution containing metallic salts by spray roasting of these solutions. The process is particularly suitable for spray roasting spent pickling acids. The process feeds the solution to a reactor for spray roasting of... | 09/20/2005 |
| 6923400 | Process and device for continuous reeling of a pulp sheet A process for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a winding unit. The pressing force in the nip between the horizontal reel and the reel drum being measured without any losses du... | 08/02/2005 |
| 6920983 | Device for separating solids from liquids by means of flotation The invention relates to a device for separating solids from liquids by means of flotation, particularly for separating impurities and ink particles from fibre suspensions, with several injectors 10, which are provided inside a flotation cell 1. It is ... | 07/26/2005 |
| 6921443 | Process for producing stainless steel with improved surface properties A process for treating a stainless steel strip in an electrolytic tank produces a stainless steel with improved surface properties. The process subjects the stainless steel to a bright annealing process, followed by an electro-chemical treatment stage at current den... | 07/26/2005 |
| 6881297 | Process for aerating dispersions A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank together with air. The air is injected at a minimum of two successive poi... | 04/19/2005 |
| 6846418 | Process for treating acidic and metallic waste water A process for treating acidic and metallic waste water, particularly the rinsing water and/or used acids from pickling plants. The process includes the step of adding an alkaline solution or gas to bind the free acids in the waste water, followed by separation of th... | 01/25/2005 |
| 6835283 | Process and device for measuring and controlling the nip pressure in the press of a paper machine The invention relates to a process for measuring and controlling the nip pressure in the press of a paper machine, particularly in a shoe press, across and/or along the web running direction. It is largely characterized by the hydraulic, static pressure being measur... | 12/28/2004 |
| 6821390 | Process and device to control quality parameters in paper, tissue and pulp dewatering plants Apparatus and process for controlling the basis weight cross-profile, the formation, the fiber direction and other quality parameters of a pulp sheet after the headbox in a dewatering plant. The apparatus including at least one suspension feed, at least one distribu... | 11/23/2004 |
| 6808634 | Method and device for cross-flow filtration The invention relates to a process for cross-flow filtration with membranes. It is mainly characterized by the membranes being moved relative to each other. The invention also relates to a device for carrying out the process, where at least two hollow membrane discs... | 10/26/2004 |
| 6797240 | Process and apparatus for the extraction and regeneration of acids from spent acids Process and apparatus for regenerating spent acid liquor includes a primary roasting furnace for evaporating a substantial portion of the liquid from the spent acid to produce acid vapors and partially roasted metal salts. The partially roasted metal salts are trans... | 09/28/2004 |
| 6792850 | Screw press The invention relates to a screw press for separating liquids from solid-liquid mixtures, especially pulp suspensions, which has a casing provided with liquid passages, especially divided into segments, a screw rotating inside the casing, a shaft, preferably hollow,... | 09/21/2004 |
| 6730232 | Process and device for separating impurities from a suspension by flotation Apparatus and a process for separating impurities from a suspension in a flotation cell, including an aeration device for aerating a liquid with a gas until the liquid is saturated. An expansion device expands the liquid saturated with gas to form gas bubbles in the... | 05/04/2004 |
| 6705561 | Process and device for continuous reeling of a pulp sheet A process for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a winding unit. The pressing force in the nip between the horizontal reel and the reel drum is measured without any losses. ... | 03/16/2004 |
| 6669819 | Device for continuous reeling of a pulp sheet A device for continuous reeling of a pulp sheet, particularly a paper sheet, where the sheet runs over a reel drum and is later wound on a horizontal reel with a horizontally adjustable holding device. The horizontally adjustable holding device having sup... | 12/30/2003 |
| 6669025 | Screen A screen for cleaning a pulp suspension including an additional screen basket in the infeed area for pre-screening.... | 12/30/2003 |
| 6637686 | Refiner A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap.... | 10/28/2003 |
| 6631809 | Screen for cleaning a pulp suspension A screen for cleaning a pulp suspension includes a stationary installation in the infeed area between the infeed branch and the free end of the rotor.... | 10/14/2003 |
