| Andritz Technology and Asset Management GmbH Patent applications |
| Patent application number | Title | Published |
|---|
| 20120085505 | METHODS FOR PRODUCING HIGH-FREENESS PULP - Methods of producing mechanical pulps from lignocellulosic material including partial defibration of lignocellulosic material in a chip press followed by liquid impregnation, preheating the lignocellulosic material for 20 seconds or less at a pressure between 7.5 and 12 bar (gauge) prior to mechanically refining the lignocellulosic material in a primary mechanical refiner at a pressure between 7.5 and 12 bar (gauge), thus obtaining a high freeness pulp. | 04-12-2012 |
| 20120042567 | METHOD AND SYSTEM FOR THE TORREFACTION OF LIGNOCELLULOSIC MATERIAL - A method for torrefaction of lignocellulosic biomass using a torrefaction reactor vessel having stacked trays, the method including: continuously feeding the biomass to an upper inlet of the torrefaction reactor vessel such that the biomass material is deposited on an upper tray of a plurality of trays stacked vertically within the reactor; as the biomass moves across an upper surface of each of the trays, heating and drying the biomass material with a gas injected into the vessel, wherein the gas is substantially non-oxidizing of the biomass, is under a pressure of at least 20 bar gauge and at a temperature of at least 200° C.; cascading the biomass down through the trays by passing the biomass through an opening in each of the trays to deposit the biomass on a lower tray; discharging torrefied biomass from a lower outlet of the torrefaction reactor vessel, and circulating gas extracted from a lower elevation of the reactor vessel to an upper region of the reactor vessel. | 02-23-2012 |
| 20110250068 | METHOD AND MEANS FOR ENHANCING THE EFFICIENCY OF WATER TURBINES - A water turbine with a rotatable turbine wheel having a wheel disc, buckets fixed to the wheel disc, and nozzle expelling a water jet on the bucket. The rotatable wheel and the nozzle are arranged in a casing with a water outlet. The interior of the casing reduces splash back of discharging water and detrimental water spray on the rotatable wheel. An energy damping device is attached on stationary, water splash exposed parts inside the turbine casing to dissipate energy from water of high velocity leaving the buckets and dense pulverised water mist. | 10-13-2011 |
| 20110188991 | LIQUID CONTROL JET DURING PART LOAD OPERATION IN A HYDRAULIC TURBINE - A hydraulic turbine including: a passageway permitting liquid to pass through the turbine; a draft tube defining a portion of the passageway through which liquid normally flows in a vortex flow path during optimal turbine operating conditions; a rotatable runner mounted upstream of the draft tube and rotating about a central axis passing through the runner and extending into the draft tube; at least one nozzle head device positioned relative to the central axis of the runner and adjacent to an upper portion of the draft tube, the at least one nozzle head device has at least one nozzle from which a corresponding control jet of high velocity liquid is injected axially downstream of the runner and into liquid flowing into the upper portion of the draft tube during part load turbine operation, so as to mitigate breakdown of the vortex flow path. | 08-04-2011 |
| 20110180061 | METHOD AND PROCESS FOR DRY DISCHARGE IN A PRESSURIZED PRETREATMENT REACTOR - A reactor for the treatment of lignocellulosic material and related methods. The reactor includes a vessel having an upper portion and a lower portion. A pressure envelope is formed between an outer wall of the vessel and at least one lower wall of the lower portion of the vessel, and the upper portion of the vessel and the pressure envelope are operatively connected with a pressurization line, such that a pressure of the pressure envelope and a pressure of the upper portion may be equalized. | 07-28-2011 |
| 20110147296 | Filter Press - Filter press with press frame containing side beams ( | 06-23-2011 |
| 20100329825 | METHOD AND SYSTEM FOR STOKER LADDER REPLACEMENT VIA AN OPEN TOP STOKER FRONT BEAM - A stoker device including: a ladder conveyor having legs extending over a bed and a channel, a yoke connecting a rear portion the legs; a beam assembly fixed to the bed and coupling the yoke to a reciprocating drive, wherein the beam assembly an anchor attached to the bed on one side of the channel, a brace beam attached to the anchor and extending over the channel, and a front beam on an opposite side of the channel to the anchor. | 12-30-2010 |
| 20100092279 | SEALING MEANS BETWEEN ROTOR AND HOUSING IN A WATER TURBINE - A reaction water turbine including: a rotor having an axis of rotation and an radially outer surface; a housing surrounding the rotor and having a bearing support proximate to the radially outer surface of the rotor; and a seal mounted to the bearing support on the housing, the seal includes a brush seal extending to and bearing against the radially outer surface of the rotor. | 04-15-2010 |
| 20090199990 | DEVICE FOR THREADING A PROCESSING INSTALLATION, SUCH AS A DRYER - A device for feeding web material through a processing installation comprises a conveyor belt which has a first segment and a second segment. An opening roller and a guiding surface are adapted for unfolding the conveyor belt by means of separating the first and second segments. A spreader roll is adapted to keep the conveyor belt unfolded while a tail of said web material is placed on said first segment. A folding roll is adapted for folding said second segment over said first segment for to enclose the tail in the conveyor belt. The spreader roll comprises a first roll portion, a second roll portion and a circumferential guiding track separating the roll portions. The first roll portion, which is adapted for supporting said first segment, has a cylindrical outer surface. | 08-13-2009 |
| 20090165614 | METHOD AND A DEVICE FOR TRANSFERRING A TAIL - A device for transferring a tail of a cellulose based fibrous web from a first unit to a second unit, the device includes: a separating member adapted to form a space between a first face of the tail and the first unit; a tail pick up pulley to be inserted in the space between the first face of the tail and the first unit, the tail pick up pulley moving the tail into a cutting position; a cutting device for cutting the tail at the cutting position, and a tail conveyor device for catching the tail cut at the cutting position and for forwarding the cut tail to the second unit. | 07-02-2009 |
