Patents by Inventor Grazyna Petela
Grazyna Petela 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).
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Patent number: 8790602Abstract: The efficiency of heat transfer to a furnace tube or coil in a furnace for cracking ethane, propane or naphtha feedstocks, or a mixture thereof may be improved by providing protuberances on the surface of the tube or coil having i) a maximum height from 3 to 15% of the coil outer diameter, ii) a contact surface with a coil, or a base, which area is 0.1%-10% of the coil external cross section area, and iii) a geometrical shape which has a relatively large external surface containing a relatively small volume.Type: GrantFiled: March 28, 2012Date of Patent: July 29, 2014Assignee: Nova Chemicals (International) S. A.Inventors: Grazyna Petela, Leslie Wilfred Benum
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Publication number: 20140076209Abstract: The dry oxygen content in the exhaust of an industrial furnace may be controlled to 1% or less by determining one or more of: the temperature of: each or a group of one or more burner (flame); one or more section of the radiant walls adjacent (e.g., within 5 feet of the burner); the temperature gradient across the process coils; the combustion products of one or more burners; the mass flow rate or the volume flow rate of air to each burner (e.g., the pressure drop across the variable forced air aperture ii) comparing the result to said target value; and iii) adjusting either a) the opening of the variable forced air aperture; or b) adjusting the mass flow rate or the volume flow rate of air from said one or more fans.Type: ApplicationFiled: August 28, 2013Publication date: March 20, 2014Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Leslie Wilfred Benum, Eric Clavelle, Grazyna Petela, Randall E. Saunders, Mark Williamson
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Publication number: 20120275966Abstract: The efficiency of heat transfer to a furnace tube or coil in a furnace for cracking ethane, propane or naphtha feedstocks, or a mixture thereof may be improved by providing protuberances on the surface of the tube or coil having i) a maximum height from 3 to 15% of the coil outer diameter, ii) a contact surface with a coil, or a base, which area is 0.1%-10% of the coil external cross section area, and iii) a geometrical shape which has a relatively large external surface containing a relatively small volume.Type: ApplicationFiled: March 28, 2012Publication date: November 1, 2012Applicant: NOVA CHEMICALS (INTERNATIONAL) S.AInventors: Grazyna Petela, Leslie Wilfred Benum
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Publication number: 20120251407Abstract: The present invention provides low profile, thick (“stubby”) longitudinal fins having a cross section which is a parallelogram, trapezoid or a triangle extending from 10% to 100% of a coil pass and comprising from 3 to 45 weight % of a coil in a radiant section of a furnace for thermally cracking one or more of paraffins and naphtha. The fins provide an additional surface through which heat may be transferred to the coil making the coil more efficient reducing greenhouse emissions.Type: ApplicationFiled: February 28, 2012Publication date: October 4, 2012Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Grazyna Petela, Leslie Wilfred Benum, Edward Christopher Foy
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Patent number: 7947751Abstract: Resin beads having an average particle size of from 0.001 mm to 10 mm and containing a continuous phase and a particulate dispersed phase are described. The continuous phase includes elastomeric polymers; the dispersed phase includes homopolymers and/or copolymers containing repeat units resulting from the polymerization of one or more aryl polymerizable monomers. The unexpanded polymer resin beads can be prepared by dispersing an organic phase containing elastomeric polymers and one or more monomers, into droplets and polymerizing the monomers in the organic droplets in a low shear flow pattern. The beads can be impregnated with blowing agents, expanded and can be used to make molded articles. Resin beads having a continuous phase comprising a nitrile rubber, and a dispersed phase comprising one or more homopolymers and/or copolymers containing repeat units resulting form the polymerization of one or more aryl polymerizable show prolonged retention of blowing agents in unexpanded form.Type: GrantFiled: November 13, 2009Date of Patent: May 24, 2011Assignee: NOVA Chemicals Inc.Inventors: Grazyna Petela, Michel F. J. Berghmans, Karel Cornelis Bleijenberg, Paul E. Arch
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Publication number: 20100304075Abstract: Partially expanded closed-cell unmatured polystyrene bead with a partial vacuum within the cells inside the bead, which may be coated with an air impervious coating to retain a partial vacuum inside cells for a prolonged period of time. The resulting bead has improved thermal insulating properties and may be used for insulation.Type: ApplicationFiled: May 28, 2009Publication date: December 2, 2010Applicant: NOVA CHEMICALS INC.Inventors: Grazyna Petela, Michel Berghmans, Thomas Chee
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Publication number: 20100056653Abstract: Resin beads having an average particle size of from 0.001 mm to 10 mm and containing a continuous phase and a particulate dispersed phase are described. The continuous phase includes elastomeric polymers; the dispersed phase includes homopolymers and/or copolymers containing repeat units resulting from the polymerization of one or more aryl polymerizable monomers. The unexpanded polymer resin beads can be prepared by dispersing an organic phase containing elastomeric polymers and one or more monomers, into droplets and polymerizing the monomers in the organic droplets in a low shear flow pattern. The beads can be impregnated with blowing agents, expanded and can be used to make molded articles. Resin beads having a continuous phase comprising a nitrile rubber, and a dispersed phase comprising one or more homopolymers and/or copolymers containing repeat units resulting form the polymerization of one or more aryl polymerizable show prolonged retention of blowing agents in unexpanded form.Type: ApplicationFiled: November 13, 2009Publication date: March 4, 2010Applicant: NOVA CHEMICALS INC.Inventors: Grazyna Petela, Michel Florentine Jozef Berghmans, Karel Cornelis Bleijenberg, Paul E. Arch
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Patent number: 7638559Abstract: Resin beads having an average particle size of from 0.001 mm to 10 mm and containing a continuous phase and a particulate dispersed phase are described. The continuous phase includes elastomeric polymers; the dispersed phase includes homopolymers and/or copolymers containing repeat units resulting from the polymerization of one or more aryl polymerizable monomers. The unexpanded polymer resin beads can be prepared by dispersing an organic phase containing elastomeric polymers and one or more monomers, into droplets and polymerizing the monomers in the organic droplets in a low shear flow pattern. The beads can be impregnated with blowing agents, expanded and can be used to make molded articles. Resin beads having a continuous phase comprising a nitrile rubber, and a dispersed phase comprising one or more homopolymers and/or copolymers containing repeat units resulting form the polymerization of one or more aryl polymerizable show prolonged retention of blowing agents in unexpanded form.Type: GrantFiled: May 9, 2006Date of Patent: December 29, 2009Assignee: NOVA Chemicals Inc.Inventors: Grazyna Petela, Michel Florentine Jozef Berghmans, Karel Cornelis Bleijenberg
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Publication number: 20060276558Abstract: Resin beads having an average particle size of from 0.001 mm to 10 mm and containing a continuous phase and a particulate dispersed phase are described. The continuous phase includes elastomeric polymers; the dispersed phase includes homopolymers and/or copolymers containing repeat units resulting from the polymerization of one or more aryl polymerizable monomers. The unexpanded polymer resin beads can be prepared by dispersing an organic phase containing elastomeric polymers and one or more monomers, into droplets and polymerizing the monomers in the organic droplets in a low shear flow pattern. The beads can be impregnated with blowing agents, expanded and can be used to make molded articles. Resin beads having a continuous phase comprising a nitrile rubber, and a dispersed phase comprising one or more homopolymers and/or copolymers containing repeat units resulting form the polymerization of one or more aryl polymerizable show prolonged retention of blowing agents in unexpanded form.Type: ApplicationFiled: May 9, 2006Publication date: December 7, 2006Inventors: Grazyna Petela, Michel Berghmans, Karel Bleijenberg
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Patent number: 6943223Abstract: The present invention provides a process to create without mechanical agitation a zone of low shear, low turbulence flow pattern within a continuous liquid phase contained in a vessel and comprising a dispersed phase consisting of particles or immiscible liquid droplets which have a density different from and should be distributed within the continuous phase without excessive agglomeration or breakups in order to largely preserve the initial particle size distribution, by a continuous or periodic re-circulation of at least a part of the continuous phase which is preferably free of dispersed particles or droplets.Type: GrantFiled: April 27, 2004Date of Patent: September 13, 2005Assignee: NOVA Chemicals Inc.Inventors: Karel Cornelis Bleijenberg, Grazyna Petela
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Patent number: 6747107Abstract: Non-Newtonian fluids, such as partially polymerized monomers or solutions of polymer in monomer may be pressure atomized below the surface of an immiscible continuous liquid phase to produce a dispersed phase having a uniform particle size distribution. A dual or customized size distribution can be obtained by imposing a controlled pressure pulsation on a flowing fluid upstream the atomizer inlet. Such dispersion may be further polymerized to produce a uniform or customized bead size product.Type: GrantFiled: August 16, 2002Date of Patent: June 8, 2004Assignee: Nova Chemical Inc.Inventors: Grazyna Petela, Karel Cornelis Bleijenberg, Jonathan O'Blenes, John Thomas Bressler
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Patent number: 6727328Abstract: The present invention provides a process to create without mechanical agitation a zone of low shear, low turbulence flow pattern within a continuous phase liquid contained in a vessel by a continuous or periodic injection of an inert, immiscible, low density fluid, preferably gas, into the liquid to form such a flow pattern, recovering the fluid above the free surface of the liquid and, preferably, reinjecting it into the liquid. The invention is particularly useful if the continuous liquid contains a dispersed phase which should be distributed within the continuous liquid without excessive particle agglomeration or breakups in order to largely preserve the initial particle size distribution, or if the initial particle size distribution needs to be modified by controlled breakups of the largest particles, particularly during the subsequent batch processing.Type: GrantFiled: October 8, 2002Date of Patent: April 27, 2004Assignee: Nova Chemicals Inc.Inventors: Karel Cornelis Bleijenberg, Grazyna Petela
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Publication number: 20040068063Abstract: The present invention provides a process to create without mechanical agitation a zone of low shear, low turbulence flow pattern within a continuous phase liquid contained in a vessel by a continuous or periodic injection of an inert, immiscible, low density fluid, preferably gas, into the liquid to form such a flow pattern, recovering the fluid above the free surface of the liquid and, preferably, reinjecting it into the liquid. The invention is particularly useful if the continuous liquid contains a dispersed phase which should be distributed within the continuous liquid without excessive particle agglomeration or breakups in order to largely preserve the initial particle size distribution, or if the initial particle size distribution needs to be modified by controlled breakups of the largest particles, particularly during the subsequent batch processing.Type: ApplicationFiled: October 8, 2002Publication date: April 8, 2004Applicant: NOVA Chemicals Inc.Inventors: Karel Cornelis Bleijenberg, Grazyna Petela
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Publication number: 20040034180Abstract: Non-Newtonian fluids, such as partially polymerized monomers or solutions of polymer in monomer may be pressure atomized below the surface of an immiscible continuous liquid phase to produce a dispersed phase having a uniform particle size distribution. A dual or customized size distribution can be obtained by imposing a controlled pressure pulsation on a flowing fluid upstream the atomizer inlet. Such dispersion may be further polymerized to produce a uniform or customized bead size product.Type: ApplicationFiled: August 16, 2002Publication date: February 19, 2004Applicant: NOVA Chemicals, Inc.Inventors: Grazyna Petela, Karel Cornelis Bleijenberg, Jonathan O'Blenes, John Thomas Bressler
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Patent number: 6610798Abstract: Non-Newtonian fluids, such as partially polymerized monomers or solutions of polymer in monomer may be pressure atomized below the free surface of a continuous liquid phase to produce a dispersed phase. A uniform or customized droplet size distribution can be obtained by imposing a required pressure pulsation on a flowing monomer upstream the atomizer inlet. This initial particle size distribution can be maintained or modified during subsequent polymerization process in a low shear, controlled turbulence flow pattern, created without mechanical agitation within the continuous liquid, by continuously or periodically injecting an inert gas at selected locations within the reactor.Type: GrantFiled: October 8, 2002Date of Patent: August 26, 2003Assignee: Nova Chemical Inc.Inventors: Karel Cornelis Bleijenberg, Grazyna Petela
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Patent number: 6343672Abstract: The present invention relates to a noise suppressor capable of reducing the noise of a fluid vented at high pressure and high mass flow rate from an industrial source, to the environmentally acceptable noise level. The invention combines two principles of dissipation of fluid stream energy: first, stream pressure is reduced by passing the stream through a swirler to split the stream into a number of smaller tangential streams which dissipate their energy along the spiral flow path due to friction; and next, the resulting streams pass through a tightly packed granular bed to reduce further the pressure and velocity of the exiting jet to atmospheric pressure and subsonic velocity, respectively. Such jet will generate much lower noise level, as compared to high pressure jet with cellular structure and supersonic velocity.Type: GrantFiled: March 23, 2000Date of Patent: February 5, 2002Assignee: NOVA Gas Transmission Ltd.Inventors: Grazyna Petela, Wiktor Jungowski