Patents by Inventor Zhanping Xu

Zhanping Xu 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: 7810796
    Abstract: The invention involves a spacing element situated between a vapor-liquid contacting tray and a tray support to reduce the dead zone typically caused by the tray supports blocking of the perforations in the vapor-liquid contacting tray directly above the tray support.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: October 12, 2010
    Assignee: UOP LLC
    Inventors: Zhanping Xu, Kevin A. Richardson, Robert J. Miller, Nicholas F. Urbanski
  • Publication number: 20100242730
    Abstract: Improved contacting stages for carrying out vapor-liquid contacting are described. Particular aspects are directed to co-current vapor-liquid contacting devices with non-parallel contacting stages that provide an efficient usage of column space for fluid flow and contacting, in order to achieve high capacity, high efficiency, and low pressure drop. The fabrication of such contacting stages is improved using one or more structural enhancements, preferably a combination of enhancements, to achieve easy installation and significantly improved rigidity between the various parts and thereby avoid movement/separation of these parts. This reduces the possibility of fluid leakage across, and consequently vapor and/or liquid bypassing of, the contacting stage.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 30, 2010
    Inventors: Thomas C. Heldwein, Joseph Agnello, Aaron J. Muck, Zhanping Xu, Brian J. Nowak
  • Publication number: 20100244290
    Abstract: Fluid distribution systems, and particularly those for distributing liquids into apparatuses containing parallel flow trays for carrying out vapor-liquid contacting, are described. Representative fluid distribution systems comprise one or more extended troughs having a plurality of outlet spouts that are aligned for distribution to a vapor-liquid contacting deck zones of a parallel flow stage. The trough(s) may be orthogonal to liquid distribution pans which are in alignment with outlet spouts (e.g., in discrete outlet spout zones) of the trough(s).
    Type: Application
    Filed: March 31, 2009
    Publication date: September 30, 2010
    Inventor: Zhanping Xu
  • Publication number: 20100162890
    Abstract: De-entrainment devices for effectively removing entrained liquid from a vapor stream are disclosed. These de-entrainment devices are effective in distillation columns and other apparatuses comprising vapor-liquid contacting devices. Particular representative applications for these de-entrainment devices are in distillation (or fractionation) columns having co-current contacting modules, in which liquid and vapor enter into co-current flow channels of the modules. The de-entrainment devices can be used, for example, with non-parallel contacting stages or other types of high capacity trays.
    Type: Application
    Filed: February 24, 2009
    Publication date: July 1, 2010
    Inventor: Zhanping Xu
  • Publication number: 20100163397
    Abstract: Fluid distribution systems, and particularly those for distributing liquids into apparatuses containing modules used to carry out vapor-liquid contacting, are described. Representative liquid distribution systems comprise an extended trough having a plurality of outlet spouts that are aligned for distribution into a plurality of downcomers. The downcomers may be in non-parallel (e.g., orthogonal) alignment with respect to the trough and/or the number of troughs may be less than the number of downcomers to which fluid is distributed.
    Type: Application
    Filed: February 24, 2009
    Publication date: July 1, 2010
    Inventors: Zhanping XU, Brian NOWAK
  • Publication number: 20100162891
    Abstract: Improved contacting modules and apparatuses containing the modules, for carrying out vapor-liquid contacting, are described. In representative contacting modules, liquid (and possibly vapor) are discharged into co-current flow channels in a non-uniform manner (e.g., from only one side of the channels). Particular contacting modules comprise at least one liquid downcomer and a demister, wherein the liquid downcomer and an inlet surface of the demister define a co-current flow channel and wherein liquid is discharged from an outlet of the downcomer. The use of one or more added liquid distribution devices to more uniformly distribute the discharged liquid improves vapor-liquid contacting efficiency in the co-current flow channel and consequently vapor-liquid mass transfer and approach to equilibrium for the contacting stage.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Inventors: Zhanping XU, Dennis Bielinski
  • Publication number: 20100013111
    Abstract: One exemplary embodiment can be a downcomer for a gas-liquid contacting device. The downcomer may include first and second spaced apart side walls, first and second end walls, a floor, and first and second opposing discharge walls. Generally, each end wall is coupled to a respective end of the first and second side walls. Typically, the floor is coupled to the side walls and end walls, and the floor has at least one section adapted for permitting the passage of liquid there-through. The first and second opposing discharge walls can be coupled to respective first and second side walls and having respective ends below the floor.
    Type: Application
    Filed: July 18, 2008
    Publication date: January 21, 2010
    Inventor: Zhanping Xu
  • Publication number: 20100011724
    Abstract: One exemplary embodiment can be a vessel for receiving a fluid. The vessel may include a shell and a demister including at least one section positioned proximate to the shell. Each section can have a first surface for primarily receiving the fluid and orientated, independently, about 5-about 85° with respect to horizontal.
    Type: Application
    Filed: July 18, 2008
    Publication date: January 21, 2010
    Inventor: Zhanping Xu
  • Patent number: 7618472
    Abstract: The invention provides a vane-type mist eliminator device having formed or corrugated sheets, flat sheets, and integral louvers. The corrugated sheets and flat sheets are layered such that the arrangement of sheets and integral louvers creates at least one tortuous fluid flow channel from an inlet to a vapor outlet of the device An outer casing or frame is sufficient to hold the sheets together.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: November 17, 2009
    Assignee: UOP LLC
    Inventors: Joseph Agnello, Thomas C. Heldwein, Zhanping Xu, Aaron J. Muck
  • Patent number: 7574190
    Abstract: The present invention relates to a method and an electronic circuit for processing at least two at least partially correlated output signal streams of a mixer, the mixer having at least two signal inputs and at least two electric signal outputs. In order to provide a method and a device or an electronic circuit which enables the correlated signal portions of the output signals of a mixer to be separated from the uncorrelated signal portions undelayed, it is proposed according to the invention that the difference of the output signal streams of the mixer is formed pairwise directly and during the readout of the signal streams and that the circuit has an apparatus for the instantaneous formation of the difference between the signal streams of two mixer outputs in each case.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: August 11, 2009
    Assignee: PMDTechnologies GmbH
    Inventors: Zhanping Xu, Holger Kraft, Tobias Möller, Jochen Frey
  • Patent number: 7424999
    Abstract: The invention is a high capacity and high efficiency co-current vapor-liquid contacting apparatus for use in distillation columns and other vapor-liquid contacting processes. The apparatus is characterized by an arrangement of modules in horizontal stages rather than tray-like construction. The modules define a co-current contacting volume and in an exemplary configuration the modules include a liquid distributor, a demister, a receiving pan and a duct. The modules of one stage are rotated to be non-parallel with respect to the modules of an inferior stage, a superior stage, or both. Variations relate to the design of the individual elements such as the demister, liquid distributor, ducts, and contacting volumes, and the overall arrangement of the apparatus.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: September 16, 2008
    Assignee: UOP LLC
    Inventors: Zhanping Xu, Brian J. Nowak, Thomas C. Heldwein, Joseph Agnello, Andrew J. Criscione, Aaron J. Muck
  • Publication number: 20080142355
    Abstract: The invention comprises a spacing element situated between a vapor-liquid contacting tray and a tray support to reduce the dead zone typically caused by the tray supports blocking of the perforations in the vapor-liquid contacting tray directly above the tray support.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Zhanping Xu, Kevin J. Richardson, Robert J. Miller, Nicholas F. Urbanski
  • Patent number: 7370846
    Abstract: The invention comprises multiple configurations of downcomers in a parallel flow multiple downcomer tray for vapor-liquid contacting processes such as the separation of chemical compounds via fractional distillation or the removal of a component of a gas stream with a treating liquid. In one embodiment, side downcomers are incorporated into a parallel flow multiple downcomer tray. In another embodiment, the downcomers have an inclined side wall that directs liquid onto the deck below the downcomer. The inclined side wall also provides additional volume above the inferior downcomer inlet to reduce pinching at this inlet without the need for a stilling deck.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: May 13, 2008
    Assignee: UOP LLC
    Inventors: Zhanping Xu, Daniel R. Monkelbaan, Brian J. Nowak, Robert J. Miller
  • Patent number: 7361883
    Abstract: The present invention relates to a photonic mixer device with a photosensitive layer, at least two modulation gates (3, 4, 103, 104, 203, 204, 303, 304, 403, 404) and at least two readout electrodes (1, 2, 101, 102, 201, 202, 301, 302, 401, 402, 501, 502, 601, 602) connected to the photosensitive layer, the modulation gates (3, 4, 103, 104, 203, 204, 303, 304, 403, 404) being able to be connected to a modulation device which raises and lowers the potential of the modulation gates relative to one another and relative to the preferably constant potential of the readout electrodes corresponding to a desired modulation function.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: April 22, 2008
    Assignee: PMD Technologies GmbH
    Inventors: Zhanping Xu, Tobias Möller, Holger Kraft, Jochen Frey, Martin Albrecht
  • Patent number: 7332132
    Abstract: An apparatus and process for stripping gases from solids comprises a structured packing in a stripping section of a vessel. The structured packing comprises a plurality of corrugated ribbons with each corrugated ribbon having at least two faces angular to each other. The ribbons at least partially obstruct passage of the solid particles. Edges of adjacent ribbons defining openings for the passage of contacted particles.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: February 19, 2008
    Assignee: UOP LLC
    Inventors: Brian W. Hedrick, Zhanping Xu, Paolo Palmas, Mitchell J. Kowalczyk, Matthew J. Westby, Weikai Gu, J. Mark Houdek, Daniel R. Monkelbaan
  • Publication number: 20070137482
    Abstract: The invention is a high capacity and high efficiency co-current vapor-liquid contacting apparatus for use in distillation columns and other vapor-liquid contacting processes. The apparatus is characterized by an arrangement of modules in horizontal stages rather than tray-like construction. The modules define a co-current contacting volume and in an exemplary configuration the modules include a liquid distributor, a demister, a receiving pan and a duct. The modules of one stage are rotated to be non-parallel with respect to the modules of an inferior stage, a superior stage, or both. Variations relate to the design of the individual elements such as the demister, liquid distributor, ducts, and contacting volumes, and the overall arrangement of the apparatus.
    Type: Application
    Filed: May 10, 2006
    Publication date: June 21, 2007
    Inventors: Zhanping Xu, Brian Nowak, Thomas Heldwein, Joseph Agnello, Andrew Criscione, Aaron Muck
  • Publication number: 20070137154
    Abstract: The invention provides a vane-type mist eliminator device having formed or corrugated sheets, flat sheets, and integral louvers. The corrugated sheets and flat sheets are layered such that the arrangement of sheets and integral louvers creates at least one tortuous fluid flow channel from an inlet to a vapor outlet of the device An outer casing or frame is sufficient to hold the sheets together.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventors: Joseph Agnello, Thomas Heldwein, Zhanping Xu, Aaron Muck
  • Publication number: 20070126134
    Abstract: The invention comprises multiple configurations of downcomers in a parallel flow multiple downcomer tray for vapor-liquid contacting processes such as the separation of chemical compounds via fractional distillation or the removal of a component of a gas stream with a treating liquid. In one embodiment, side downcomers are incorporated into a parallel flow multiple downcomer tray. In another embodiment, the downcomers have an inclined side wall that directs liquid onto the deck below the downcomer. The inclined side wall also provides additional volume above the inferior downcomer inlet to reduce pinching at this inlet without the need for a stilling deck.
    Type: Application
    Filed: October 17, 2006
    Publication date: June 7, 2007
    Inventors: Zhanping Xu, Daniel Monkelbaan, Brian Nowak, Robert Miller
  • Patent number: 7204477
    Abstract: The invention comprises multiple configurations of downcomers in a parallel flow multiple downcomer tray for vapor-liquid contacting processes such as the separation of chemical compounds via fractional distillation or the removal of a component of a gas stream with a treating liquid. In one embodiment, side downcomers are incorporated into a parallel flow multiple downcomer tray. In another embodiment, the downcomers have an inclined side wall that directs liquid onto the deck below the downcomer. The inclined side wall also provides additional volume above the inferior downcomer inlet to reduce pinching at this inlet without the need for a stilling deck.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: April 17, 2007
    Assignee: UOP LLC
    Inventors: Zhanping Xu, Daniel R. Monkelbaan, Brian J. Nowak, Robert J. Miller
  • Publication number: 20060273616
    Abstract: The invention comprises multiple configurations of downcomers in a parallel flow multiple downcomer tray for vapor-liquid contacting processes such as the separation of chemical compounds via fractional distillation or the removal of a component of a gas stream with a treating liquid. In one embodiment, side downcomers are incorporated into a parallel flow multiple downcomer tray. In another embodiment, the downcomers have an inclined side wall that directs liquid onto the deck below the downcomer. The inclined side wall also provides additional volume above the inferior downcomer inlet to reduce pinching at this inlet without the need for a stilling deck.
    Type: Application
    Filed: June 1, 2005
    Publication date: December 7, 2006
    Inventors: Zhanping Xu, Daniel Monkelbaan, Brian Nowak, Robert Miller