Patents by Inventor Harald Franzrahe
Harald Franzrahe 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: 11958793Abstract: A urea production plant including a synthesis and recovery section has a first evaporation section connected with the synthesis and recovery section and a first condensation section. A granulation section is connected to the first evaporation section. A scrubbing section is connected to the granulation section. A second evaporation section is connected to the scrubbing section. The second evaporation section is connected to the granulation section. A second condensation section is connected to the second evaporation section. A quenching section includes a liquid inlet for the distribution of a quenching liquid is located and connected between the granulation section and the scrubbing section and the quenching section is connected to a quenching liquid providing section and the second condensation section.Type: GrantFiled: April 12, 2019Date of Patent: April 16, 2024Assignees: THYSSENKRUPP FERTILIZER TECHNOLOGY GMBH, thyssenkrupp AGInventors: Harald Franzrahe, Axel Erben, Simon Koch
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Publication number: 20230035921Abstract: A method for producing a fertilizer that comprises urea and/or at least one ammonium compound may involve obtaining ammonia as an impurity in the production process, and photocatalytically decomposing the ammonia by irradiation with UV radiation. Further, an apparatus for producing fertilizer granules that comprise urea and/or at least one ammonium compound may include a plant section having a fertilizer granulator configured to produce the fertilizer granules, a supply line configured to pass a urea melt or a concentrated urea solution to the plant section, a UV lamp arrangement that is proximate the supply line and is configured to irradiate with UV radiation the urea melt or the concentrated urea solution flowing in the supply line.Type: ApplicationFiled: December 21, 2020Publication date: February 2, 2023Applicants: thyssenkrupp Fertilizer Technology GmbH, thyssenkrupp AGInventor: Harald FRANZRAHE
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Publication number: 20220370974Abstract: A fluidized bed granulator for production of urea-containing or nitrate-containing granules may include a granulator interior having granulator interior walls with a first granulator side wall, a second granulator side wall, a granulator front wall that extends transversely to the granulator side walls, and a granulator back wall that likewise extends transversely at the opposite end of the granulator interior from the granulator front wall, a horizontal perforated plate that bounds the granulator interior in a downward direction, a seed entry opening, and a granule exit opening that is disposed at a distance in front of the granulator back wall. A process for producing urea-containing or nitrate-containing granules may utilize the fluidized bed granulator.Type: ApplicationFiled: October 30, 2020Publication date: November 24, 2022Applicants: thyssenkrupp Fertilizer Technology GmbH, thyssenkrupp AGInventors: Matthias POTTHOFF, Harald FRANZRAHE
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Publication number: 20220143566Abstract: A fluid-bed granulator system for producing fertilizer granules with a defined size including a fluid-bed granulator, a first cooler externally connected with the fluid-bed granulator or forming an internal part of the fluid-bed granulator, and a product screen connected with the first cooler. The product screen includes an exit for on-size particles; an exit for oversized particles and an exit for undersized particles. The exit for undersized particles is connected to the fluid-bed granulator and the exit for oversized particles is connected to the fluid-bed granulator via one or more crushers. The exit for on-size particles is connected to a first splitter. The first splitter is connected to the fluid-bed granulator and a post processing unit. A particle size analyzer is located between the fluid-bed granulator and the product screen.Type: ApplicationFiled: January 28, 2022Publication date: May 12, 2022Applicants: thyssenkrupp Fertilizer Technology GmbH, thyssenkrupp AGInventors: Harald Franzrahe, Thomas Krawczyk
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Publication number: 20210238107Abstract: A spray nozzle for production of urea fertilizer granules and/or urea-sulfur fertilizer granules has a conveying channel and an atomizing gas channel. The conveying channel has at least one separating pin and the atomizing channel has at least one swirl element. The swirl element has inserts, cutouts and moving and fixed elements. The disclosure also sets out a fluidized bed granulator with a spray nozzle for production of a urea-sulfur fertilizer, a process for producing a urea-sulfur fertilizer, and the use of the spray nozzle for production of fertilizer granules.Type: ApplicationFiled: June 7, 2019Publication date: August 5, 2021Applicants: thyssenkrupp Fertilizer Technology GmbH, thyssenkrupp AGInventors: Matthias POTTHOFF, Harald FRANZRAHE, Thomas JOHNER, Luc Albert VANMARCKE
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Publication number: 20210114948Abstract: A fluid-bed granulator system may include a fluid-bed granulator, a scrubber unit, and a connection-duct between an air vent opening of the fluid-bed granulator and the scrubber unit. An inner surface of the connection-duct may be at least partially coated with an anti-adhesion layer. The system may further include a granulator space inside the fluid-bed granulator, a perforated plate disposed inside the granulator space, spray nozzles disposed at the perforated plate, a fluidization air inlet, supply lines for atomization air connected to the spray nozzles, supply lines for a liquid melt connected to the spray nozzles, a granulation seeds inlet, a granulator outlet opening, and an air vent opening. A disclosed urea granulation plant may utilize the fluid-bed granulator system.Type: ApplicationFiled: March 21, 2019Publication date: April 22, 2021Applicants: THYSSENKRUPP FERTILIZER TECHNOLOGY GMBH, thyssenkrupp AGInventors: Harald FRANZRAHE, Matthias POTTHOFF, Andreas GRULKE
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Publication number: 20210053884Abstract: A fluid-bed granulator system with adjustable cooling includes a fluid-bed granulator. A first cooler is externally connected to the fluid-bed granulator or forms an internal part of the fluid-bed granulator. A product screen is connected to the first cooler and the fluid-bed granulator. The product screen includes an exit for final on-size product particles, an exit for oversized particles, and an exit for undersized particles. The exit for the undersized particles is connected to the fluid-bed granulator and the exit for the oversized particles is connected to the fluid-bed granulator via one or more crushers. A recycle cooler is located and connected between the fluid-bed granulator and the exit for undersized particles and/or the recycle cooler is located between the fluid-bed granulator and the exit for the oversized particles. The recycle cooler is connected to the fluid-bed granulator via one or more recycle inlets.Type: ApplicationFiled: May 7, 2019Publication date: February 25, 2021Applicants: thyssenkrupp Fertilizer Technology GmbH, thyssenkrupp AGInventors: Harald FRANZRAHE, Rositsa Marianova RIEKS
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Publication number: 20210024460Abstract: A urea production plant including a synthesis and recovery section has a first evaporation section connected with the synthesis and recovery section and a first condensation section. A granulation section is connected to the first evaporation section. A scrubbing section is connected to the granulation section. A second evaporation section is connected to the scrubbing section. The second evaporation section is connected to the granulation section. A second condensation section is connected to the second evaporation section. A quenching section includes a liquid inlet for the distribution of a quenching liquid is located and connected between the granulation section and the scrubbing section and the quenching section is connected to a quenching liquid providing section and the second condensation section.Type: ApplicationFiled: April 12, 2019Publication date: January 28, 2021Applicants: THYSSENKRUPP FERTILIZER TECHNOLOGY GMBH, thyssenkrupp AGInventors: Harald Franzrahe, Axel Erben, Simon Koch
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Patent number: 10752559Abstract: A particulate, urea-containing composition and use of an additive for producing a particulate, urea-containing composition and methods of producing a particulate, urea-containing composition.Type: GrantFiled: December 17, 2016Date of Patent: August 25, 2020Assignees: THYSSENKRUPP FERTILIZER TECHNOLOGY GMBH, THYSSENKRUPP AGInventors: Matthias Potthoff, Thomas Krawczyk, Harald Franzrahe, Luc Albert Vanmarcke
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Publication number: 20200017416Abstract: A fluid-bed granulator system for producing fertilizer granules with a defined size including a fluid-bed granulator, a first cooler externally connected with the fluid-bed granulator or forming an internal part of the fluid-bed granulator, and a product screen connected with the first cooler. The product screen includes an exit for on-size particles; an exit for oversized particles and an exit for undersized particles. The exit for undersized particles is connected to the fluid-bed granulator and the exit for oversized particles is connected to the fluid-bed granulator via one or more crushers. The exit for on-size particles is connected to a first splitter. The first splitter is connected to the fluid-bed granulator and a post processing unit. A particle size analyzer is located between the fluid-bed granulator and the product screen.Type: ApplicationFiled: July 2, 2019Publication date: January 16, 2020Applicants: thyssenkrupp Fertilizer Technology GmbH, thyssenkrupp AGInventors: Harald Franzrahe, Thomas Krawczyk
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Publication number: 20180370865Abstract: A particulate, urea-containing composition and use of an additive for producing a particulate, urea-containing composition and methods of producing a particulate, urea-containing composition.Type: ApplicationFiled: December 17, 2016Publication date: December 27, 2018Applicants: THYSSENKRUPP FERTILIZER TECHNOLOGY GMBH, thyssenkrupp AGInventors: Matthias POTTHOFF, Thomas KRAWCZYK, Harald FRANZRAHE, Luc Albert VANMARCKE
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Patent number: 9745256Abstract: A urea granulation process with a scrubbing system may involve at least one gaseous waste stream for removal of dust and ammonia whereby the waste stream may be processed through a combination of process steps. In some examples, the process steps may involve washing the dust and ammonia laden stream with water and/or an aqueous urea solution whereby a dust-laden liquid stream and a dust-reduced stream is generated. The process steps may further involve reacting the dust-reduced stream with formaldehyde to form a stream comprising hexamethylenetetramine and urea-formaldehyde and clean off-gas. In some cases, the gas stream may be directed first through the washing step and then through the reacting step.Type: GrantFiled: September 8, 2016Date of Patent: August 29, 2017Assignee: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Matthias Potthoff, Harald Franzrahe, Luc Albert Vanmarcke
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Publication number: 20160376230Abstract: A urea granulation process with a scrubbing system may involve at least one gaseous waste stream for removal of dust and ammonia whereby the waste stream may be processed through a combination of process steps. In some examples, the process steps may involve washing the dust and ammonia laden stream with water and/or an aqueous urea solution whereby a dust-laden liquid stream and a dust-reduced stream is generated. The process steps may further involve reacting the dust-reduced stream with formaldehyde to form a stream comprising hexamethylenetetramine and urea-formaldehyde and clean off-gas. In some cases, the gas stream may be directed first through the washing step and then through the reacting step.Type: ApplicationFiled: September 8, 2016Publication date: December 29, 2016Applicant: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Matthias POTTHOFF, Harald FRANZRAHE, Luc Albert VANMARCKE
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Patent number: 9493407Abstract: Disclosed is a method for producing granular urea and reducing ammonia emissions in a gaseous waste stream of the urea granulation process. The method includes the steps of granulating urea and generating a gaseous waste stream from the granulation of the urea, first washing the waste stream in a first scrubber dust stage to remove dust form the gaseous waste stream, and then reacting the gaseous waste stream with formaldehyde in a formaldehyde stage to generate a hexamethylenetetramine and urea-formaldehyde liquid stream, and an ammonia-reduced off-gas stream.Type: GrantFiled: May 2, 2013Date of Patent: November 15, 2016Assignee: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Matthias Potthoff, Harald Franzrahe, Luc Albert Vanmarcke
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Patent number: 9149763Abstract: The invention relates to a method for reducing aerosol emissions from a urea granulation plant with a recovery of the resulting scrubber bleeds, with a granulator producing urea from a concentrated urea solution and an evaporation of the included water, giving urea granulates and an exhaust of dust, ammonia and ammonium cyanate, and a following scrubbing or removing stage for the dust, and a following scrubbing acid stage, resulting in a first stream comprising mainly aerosols and a second stream comprising ammonium salts, and a following aerosol stage with spray and collection devices, releasing a first stream of an exhaust of air, and a second stream of ammonium cyanate and water, and the second stream of the aerosol stage of ammonium cyanate and water is recovered into the urea granulation plant or into a urea fertilizer plant.Type: GrantFiled: January 14, 2013Date of Patent: October 6, 2015Assignee: UHDE FERTILZER TECHNOLOGY B.V.Inventors: Harald Franzrahe, Matthias Potthoff, Luc Albert Vanmarcke
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Publication number: 20150133689Abstract: Disclosed is a method for producing granular urea and reducing ammonia emissions in a gaseous waste stream of the urea granulation process. The method includes the steps of granulating urea and generating a gaseous waste stream from the granulation of the urea, first washing the waste stream in a first scrubber dust stage to remove dust form the gaseous waste stream, and then reacting the gaseous waste stream with formaldehyde in a formaldehyde stage to generate a hexamethylenetetramine and urea-formaldehyde liquid stream, and an ammonia-reduced off-gas stream.Type: ApplicationFiled: May 2, 2013Publication date: May 14, 2015Applicant: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Matthias Potthoff, Harald Franzrahe, Luc Albert Vanmarcke
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Patent number: 8945271Abstract: A method for producing urea granules having low moisture absorption capacity, with a urea granulator, having a granule flow inlet side and oppositely a granule flow outlet side, forming an axis alongside which granules from a urea solution and a urea/ammonium salt-stream are formed, whereby the solution and the salt-stream are sprayed as a mixture or separately via a feed system unit via various nozzles into the granulator onto a seed material. In this process the highest amount of the salt-stream is sprayed into the granulator at the granule flow inlet side and the amount of the salt-stream is decreased alongside the axis of the granulator from the granule flow inlet side to the granule flow outlet side.Type: GrantFiled: August 31, 2011Date of Patent: February 3, 2015Assignee: Uhde Fertilizer Technology B.V.Inventors: Paul Niehues, Harald Franzrahe, Matthias Potthoff, Luc Albert Vanmarcke
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Publication number: 20140178258Abstract: The invention relates to a method for reducing aerosol emissions from a urea granulation plant with a recovery of the resulting scrubber bleeds, with a granulator producing urea from a concentrated urea solution and an evaporation of the included water, giving urea granulates and an exhaust of dust, ammonia and ammonium cyanate, and a following scrubbing or removing stage for the dust, and a following scrubbing acid stage, resulting in a first stream comprising mainly aerosols and a second stream comprising ammonium salts, and a following aerosol stage with spray and collection devices, releasing a first stream of an exhaust of air, and a second stream of ammonium cyanate and water, and the second stream of the aerosol stage of ammonium cyanate and water is recovered into the urea granulation plant or into a urea fertilizer plant.Type: ApplicationFiled: January 14, 2013Publication date: June 26, 2014Applicant: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Harald Franzrahe, Matthias Potthoff, Luc Albert Vanmarcke
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Publication number: 20130319060Abstract: A method for producing urea granules having low moisture absorption capacity, with a urea granulator, having a granule flow inlet side and oppositely a granule flow outlet side, forming an axis alongside which granules from a urea solution and a urea/ammonium salt-stream are formed, whereby the solution and the salt-stream are sprayed as a mixture or separately via a feed system unit via various nozzles into the granulator onto a seed material. In this process the highest amount of the salt-stream is sprayed into the granulator at the granule flow inlet side and the amount of the salt-stream is decreased alongside the axis of the granulator from the granule flow inlet side to the granule flow outlet side.Type: ApplicationFiled: August 31, 2011Publication date: December 5, 2013Applicant: UHDE FERTILIZER TECHNOLOGY B.V.Inventors: Paul Niehues, Harald Franzrahe, Matthias Potthoff, Luc Albert Vanmarcke
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Patent number: 8466315Abstract: A urea granulation process and the apparatus suitable for operating that process integrates a method for reducing ammonia emissions from a urea granulation plant which is emitted by a urea production process by scrubbing the off-gas and recovering the scrubber bleed and integrating it into the granulation process so that ammonium salts are completely contained by the process.Type: GrantFiled: November 6, 2009Date of Patent: June 18, 2013Assignee: UHDE Fertilizer Technology B.V.Inventors: Paul Niehues, Harald Franzrahe, Matthias Potthoff, Roland Monstrey