Patents by Inventor Felix Streiff

Felix Streiff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7942955
    Abstract: The static devolatilisation apparatus serves to treat a liquid (7) containing polymers for the purpose of polymer devolatilisation. Volatile components are separated from the polymers in that the liquid standing under pressure is expanded in at least one phase separation chamber (2) in the upper regions of the container (10). A discharge pump (3) for the devolatilised polymer is located at the base of a sump region. An extraction line (4) for gases (8) is located in the upper region. The separation chamber includes an inlet (20) for the liquid to be treated, lower openings (210) for polymer discharge and at least a single upper opening (220) for gas discharge.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: May 17, 2011
    Assignee: Sulzer Chemtech AG
    Inventor: Felix A Streiff
  • Publication number: 20070137488
    Abstract: The static devolatilisation apparatus serves to treat a liquid (7) containing polymers for the purpose of polymer devolatilisation. Volatile components are separated from the polymers in that the liquid standing under pressure is expanded in at least one phase separation chamber (2) in the upper regions of the container (10). A discharge pump (3) for the devolatilised polymer is located at the base of a sump region. An extraction line (4) for gases (8) is located in the upper region. The separation chamber includes an inlet (20) for the liquid to be treated, lower openings (210) for polymer discharge and at least a single upper opening (220) for gas discharge.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 21, 2007
    Inventor: Felix Streiff
  • Patent number: 7077561
    Abstract: A static mixer (10) is provided with a first grid (14) having one or more crossing elements (16) and one or more slots and a second grid (14) having one or more crossing elements (16) and one or more slots. The crossing elements (16) of the first grid (14) are arranged at intersecting angles to the crossing elements (16) of the second grid (14). At least one elongated connector (18) is positioned between and secured to adjacent crossing elements (16) of the first grid (14) and crossing elements (16) of the second grid (14). The grids may further be arranged such that each crossing element of one grid intersects a slot in the other grid.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: July 18, 2006
    Assignee: Sulzer Chemtech AG
    Inventors: Felix A. Streiff, Robert E. McMillen
  • Publication number: 20040125691
    Abstract: A static mixer (10) is provided with a first grid (14) having one or more crossing elements (16) and one or more slots and a second grid (14) having one or more crossing elements (16) and one or more slots. The crossing elements (16) of the first grid (14) are arranged at intersecting angles to the crossing elements (16) of the second grid (14). At least one elongated connector (18) is positioned between and secured to adjacent crossing elements (16) of the first grid (14) and crossing elements (16) of the second grid (14). The grids may further be arranged such that each crossing element of one grid intersects a slot in the other grid.
    Type: Application
    Filed: July 15, 2003
    Publication date: July 1, 2004
    Inventors: Felix A. Streiff, Robert E. McMillen
  • Patent number: 6479624
    Abstract: A polymer devolatilization preheater and a method for using the same to preheat a polymer/solvent solution. The preheater includes an elongated, upright hollow vessel defining a heating chamber having a upper and lower ends, and a longitudinal axis extending between the ends. An inlet for a polymer/solvent solution is located adjacent the upper end of the chamber and a molten polymer outlet is located adjacent the lower end of the chamber. A plurality of heating tube bundles are mounted in the chamber, each bundle including a plurality of elongated serpentine heating tubes which are each arranged in a configuration having a major axis which extends across the chamber in a direction transverse to the longitudinal axis of the vessel. The tubes are positioned such that the polymer/solvent solution comes into heat transferring contact with an outer surface thereof as the polymer/solvent solution flows along a path that extends from the polymer/solvent solution inlet to the polymer outlet.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: November 12, 2002
    Assignee: Koch-Glitch, Inc.
    Inventors: Angelia M. Wepener, Felix A. Streiff
  • Patent number: 6428200
    Abstract: The static laminar mixing device for mixing media of widely different viscosities has two mixers of different cross-sections arranged one after the other with the cross-section of the first mixer being smaller than the second mixer. An admixing device for metering additive of lower viscosity than the medium of the main flow is also provided. This admixing device has a plate which defines a converging orifice for passage of the main flow and additive therethrough into the first mixer while a nozzle is aligned with the orifice for adding the additive flow.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 6, 2002
    Assignee: Sulzer Brothers Limited
    Inventors: Markus Fleischli, Felix Streiff, Andreas Walder
  • Patent number: 6419386
    Abstract: The static laminar mixing device for mixing media of widely different viscosities has two mixers of different cross-sections arranged one after the other with the cross-section of the first mixer being smaller than the second mixer. An admixing device for metering additive of lower viscosity than the medium of the main flow is also provided. This admixing device has a plate which defines a converging orifice for passage of the main flow and additive therethrough into the first mixer while a nozzle is aligned with the orifice for adding the additive flow.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: July 16, 2002
    Assignee: Sulzer Brothers Limited
    Inventors: Markus Fleischli, Felix Streiff, Andreas Walder
  • Patent number: 6394644
    Abstract: A saddle element for a static mixer includes a generally ring-shaped support structure having a central axis, concentric inner and outer, radially spaced, circumferentially extending surfaces, and first and second axially spaced, generally parallel edge surfaces. The inner surface of the ring-shaped support structure defines a fluid flow path which extends along the central axis. The edge surfaces of the ring-shaped support structure are located in respective generally parallel transverse planes which are essentially perpendicular relative to the central axis. The saddle element also includes a plurality of crossbars that are located in the flow path. The crossbars have a first end which is closer to the transverse plane of the first edge of the ring-shaped support structure than to the transverse plane of the second edge of the ring-shaped support structure.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: May 28, 2002
    Assignee: Koch-Glitsch, Inc.
    Inventor: Felix A. Streiff
  • Publication number: 20010039329
    Abstract: A polymer devolatilization preheater and a method for using the same to preheat a polymer/solvent solution. The preheater includes an elongated, upright hollow vessel defining a heating chamber having a upper and lower ends, and a longitudinal axis extending between the ends. An inlet for a polymer/solvent solution is located adjacent the upper end of the chamber and a molten polymer outlet is located adjacent the lower end of the chamber. A plurality of heating tube bundles are mounted in the chamber, each bundle including a plurality of elongated serpentine heating tubes which are each arranged in a configuration having a major axis which extends across the chamber in a direction transverse to the longitudinal axis of the vessel. The tubes are positioned such that the polymer/solvent solution comes into heat transferring contact with an outer surface thereof as the polymer/solvent solution flows along a path that extends from the polymer/solvent solution inlet to the polymer outlet.
    Type: Application
    Filed: March 21, 2001
    Publication date: November 8, 2001
    Inventors: Angelia M. Wepener, Felix A. Streiff
  • Patent number: 5944419
    Abstract: The mixer arranged in a tube contains at least one or a plurality of mixing elements which have two axial sections each. To each section is assigned at least one separating flange subdividing the section. The separating flanges of the two sections cross one another. The tube cross section is divided into subareas by the separating flanges. At the boundary between the sections both open subareas and subareas covered by deflection plates are provided. On both sides of each separating flange is placed exactly one open subarea. With respect to successive mixing elements, neighboring separating flanges cross each other as well, and the open subareas are arranged so as to be offset with respect to one another.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: August 31, 1999
    Assignee: Sulzer Chemtech AG
    Inventor: Felix Streiff
  • Patent number: 5865537
    Abstract: A mixing device for mixing a low-viscosity fluid into a high-viscosity fluid comprises the following parts: a main line for carrying the high-viscosity fluid and having inbuilt static mixing units of a main mixer; a branch line for a branch flow which is routed from the main line to the inlet of the main mixer, the main line and branch line of the main mixer being constructed from pipe sections with essentially parallel axes; a pump located in the branch line; a static auxiliary mixer at the end of the branch line; and a nozzle at the inlet to the auxiliary mixer for feeding in the low-viscosity fluid.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: February 2, 1999
    Assignee: Sulzer Chemtech AG
    Inventors: Felix Streiff, Andreas Walder, Arno Signer
  • Patent number: 5851067
    Abstract: The static mixer contains a bundle of chambered strings (A, B, . . . ) which at least partly comprise mixing-active chambers (A1, A2, . . . ). The bundle is arranged in a tube. The mixing-active chambers extend in the direction of the tube in each case between two closed ends. Two mutually adjacent side walls of the mixing-active chambers contain four alternately disposed passages which produce connections to two chambers lying upstream and downstream. Re-layering chambers are arranged between at least two sections of the mixer which contain mixing-active chambers, each of which has two closed ends and three lateral passages to adjacent chambers. The re-layering chambers occur in pairs, with a direct or an indirect connection being provided via one of the passages in each case.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: December 22, 1998
    Assignee: Sulzer Chemtech AG
    Inventors: Markus Fleischli, Rolf Heusser, Felix Streiff
  • Patent number: 5456533
    Abstract: The static mixing element in a flow channel (7) has at least two deflectors (30) disposed on mountings (20) at a distance from the channel wall. The deflectors form an angle W of from 10.degree. to 45.degree. to the main flow direction Z. They have different orientations and the projection FZ of the deflectors in the main flow direction amounts to from 5% to 50% of the channel cross-section F. Cross-flows providing very efficient transverse mixing are therefore produced in a simple manner. When dispensing tubes (20, 21) are used as mountings a very effective mixing device is provided.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: October 10, 1995
    Assignee: Sulzer Brothers Limited
    Inventors: Felix Streiff, Markus Fleischli
  • Patent number: 5388974
    Abstract: Disclosed is a gear pump which is especially suitable for discharging highly viscous media from a vacuum against a high delivery pressure. It includes a pair of gear wheels (2) and an inlet and outlet area in one housing. The inlet (4) has an enlargement (10) that extends at least as far as the plane (11) of the gear wheel axes (12). The length R of this enlargement parallel to the plane of the gear wheel axes and at right angles to the gear wheel axes is larger than the length D of the pair of gear wheels. According to this invention the enlargement (10) of gear wheels (2) has a width c in the direction of the gear wheel axes (12) which is greater than the tooth width T.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: February 14, 1995
    Assignee: Sulzer Chemtech AG
    Inventor: Felix Streiff
  • Patent number: 5380088
    Abstract: The device for mixing a small quantity of fluid (1) into a the main flow of another fluid (2) in a main channel comprises an injection system (3) and a static mixing unit (4, 5) arranged downstream. The inlet cross section (F) of the mixing unit is divided into sub-areas (F1, F2, F3, F4). The injection system consists of main metering pipes with a plurality of directed metering openings (21). The flow quantities through the metering openings are proportional to the component flows through the corresponding associated sub-areas (F1, F2, F3, F4). This results in uniform thorough mixing over a short distance and with a small pressure drop. The mixing device is particularly suitable for Denox plant.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: January 10, 1995
    Assignee: Sulzer Brothers Limited
    Inventors: Markus Fleischli, Felix Streiff
  • Patent number: 5320428
    Abstract: The mixer installation contains duct components (21), which are disposed in the tower (2) in layers or beds (22, 23 24). The duct components (21) of a layer (22, 23, 24) and/or successive layers (22, 23 24) in the direction of flow of the flow material are angularly inclined with respect to one another and comprise parallel ducts (20) open to the tower clearance (20). The surfaces of the components (21) and of the ducts (210) of these components (21) may be coated with catalyzers. The plant for the removal of nitrogen from flue gas contains such components (21) provided with a surface coating having a catalytic effect.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: June 14, 1994
    Assignee: Sulzer Chemtech AG
    Inventor: Felix Streiff
  • Patent number: 4759910
    Abstract: The tubular arm distributor is provided with at least one tubular arm having metering orifices through which a dispersed phase can be metered and a horizontal box-like element which extends over the metering orifices to define a chamber for receiving the dispersed phase. The box-like element has exit orifices in the form of slots along the side walls to distribute the dispersed phase into the continuous phase.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: July 26, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Felix Streiff, Peter Mathys
  • Patent number: 4623454
    Abstract: The mass transfer column through which a continuous phase and at least one dispersed phase flow in countercurrent has two embodiments of packing elements disposed in the mass transfer section of the column. The first embodiment takes the form of corrugated layers which are disposed parallel to the column axis and engage one another, the corrugations of adjacent layers crossing one another. In the second embodiment plane intermediate layers are introduced between adjacent corrugated layers. The elements with intermediate layers provide cross-conveyance of the dispersed phase while the corrugated elements are responsible for mass transfer and for maintaining the dispersion distribution.
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: November 18, 1986
    Assignee: Sulzer Brothers Limited
    Inventors: Willy Tauscher, Felix Streiff, Peter Mathys
  • Patent number: 4497753
    Abstract: A packing is constructed for an apparatus for mixing or for exchange processes. The packing includes at least two zig-zag layers each of which has a number of parallel rows of substantially rectangular deflecting surfaces with alternating gaps in the inclined flanks. Bridges connect the rows of deflecting surfaces and are disposed in the troughs and at the apices of the corrugated layer.The packing can be produced by simple stamping and bending steps.
    Type: Grant
    Filed: July 13, 1982
    Date of Patent: February 5, 1985
    Assignee: Sulzer Brothers Limited
    Inventor: Felix Streiff
  • Patent number: RE36969
    Abstract: The static mixing element in a flow channel (7) has at least two deflectors (30) disposed on mountings (20) at a distance from the channel wall. The deflectors form an angle W of from 10.degree. to 45.degree. to the main flow direction Z. They have different orientations and the projection FZ of the deflectors in the main flow direction amounts to from 5% to 50% of the channel cross-section F. Cross-flows providing very efficient transverse mixing are therefore produced in a simple manner. When dispensing tubes (20, 21) are used as mountings a very effective mixing device is provided.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: November 28, 2000
    Assignee: Sulzer Brothers Limited
    Inventors: Felix Streiff, Markus Fleischli