Patents by Inventor Rikard Hakansson
Rikard Hakansson 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: 11439947Abstract: A mixer for recirculating ash from solid fuel combustion with hydrated lime and water and to feed the mixture into a desulfurization reactor. The mixer includes a housing having a front wall, two outer vertical sidewalls, a rear wall, a top, and a bottom, the top includes a feed chute configured for the entry and addition of product to the mixer, and the front wall includes an opening for the mixture of product to exit. The mixer also includes a rotatable vertical shaft having an impeller, the impeller having a plurality of blades disposed on the vertical shaft in the same horizontal plane and distributed equidistantly about the circumference of the vertical shaft. The mixer also includes a vertical wall disposed within the housing forming a mixing region and a feeding region that is operably connected to the opening of the front wall.Type: GrantFiled: August 28, 2020Date of Patent: September 13, 2022Assignee: ANDRITZ AKTIEBOLAGInventors: Nabil Rafidi, Ali Mustapha Tabikh, Robert Rahlin, Wuyin Wang, Bjorn Sture Rikard Hakansson
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Publication number: 20220062814Abstract: A mixer for recirculating ash from solid fuel combustion with hydrated lime and water and to feed the mixture into a desulfurization reactor. The mixer includes a housing having a front wall, two outer vertical sidewalls, a rear wall, a top, and a bottom, the top includes a feed chute configured for the entry and addition of product to the mixer, and the front wall includes an opening for the mixture of product to exit. The mixer also includes a rotatable vertical shaft having an impeller, the impeller having a plurality of blades disposed on the vertical shaft in the same horizontal plane and distributed equidistantly about the circumference of the vertical shaft. The mixer also includes a vertical wall disposed within the housing forming a mixing region and a feeding region that is operably connected to the opening of the front wall.Type: ApplicationFiled: August 28, 2020Publication date: March 3, 2022Applicant: GENERAL ELECTRIC COMPANYInventors: NABIL RAFIDI, ALI MUSTAPHA TABIKH, ROBERT RAHLIN, WUYIN WANG, BJORN STURE RIKARD HAKANSSON
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Patent number: 10416105Abstract: A method for measuring a concentration of dibasic acid in a cleaning process substance is provided. The method includes sending a plurality of voltage pulses through the cleaning process substance by each a first electrode and a second electrode. Each the first electrode and the second electrode is in contact with the cleaning process substance containing a concentration of dibasic acid. The method also includes receiving current responses generated by the plurality of voltage pulses, and analyzing the current responses using a multivariate data analysis for calculation of the concentration of dibasic acid in the cleaning process substance. A dibasic acid sensor, a control unit, and an analyzing unit for performing the method, are also provided.Type: GrantFiled: June 9, 2016Date of Patent: September 17, 2019Inventor: Rikard Håkansson
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Patent number: 9895643Abstract: A wet scrubber (1) useful for cleaning a process gas comprises at least a first spray level system (20) and a second spray level system (26) arranged vertically above the first spray level system (20) in a wet scrubber tower (2). The first spray level system (20) comprises at least one gas-liquid contacting plate (38) which is operative for deflecting absorption liquid, that has been atomized by means of the second spray level system (26) and flowing downward in the wet scrubber tower (2), so deflected absorption liquid (AL) may contact process gas (F) contacted by absorption liquid atomized by the first spray level system (20).Type: GrantFiled: June 10, 2015Date of Patent: February 20, 2018Assignee: General Electric Technology GmbHInventor: Rikard Håkansson
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Patent number: 9579765Abstract: A sensor for detection and measurement of a particular substance present in a liquid is disclosed. The sensor includes a non-circular or non-symmetrically fixed electrode for detection and measurement of a particular substance present in a liquid in which said sensor is submersed. The sensor with non-circular or non-symmetrically fixed electrode and method of using the same reduces or eliminates electrode deformation upon residue removal therefrom thereby prolonging operating life.Type: GrantFiled: April 26, 2013Date of Patent: February 28, 2017Assignee: General Electric Technology GmbHInventor: Rikard Håkansson
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Publication number: 20170023507Abstract: A method is provided for measuring a concentration of dibasic acid in a substance in a gas cleaning process, the method comprising the steps of sending a plurality of voltage pulses through the substance by a first electrode and a second electrode, wherein the first and second electrodes are in contact with the substance, receiving current responses generated by the plurality of voltage pulses, and analyzing the current responses using a multivariate data analysis for calculation of the concentration of dibasic acid in the substance. Also provided is a dibasic acid sensor, control unit and analysing unit for performing such a method.Type: ApplicationFiled: June 9, 2016Publication date: January 26, 2017Inventor: Rikard HÅKANSSON
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Patent number: 9468885Abstract: A method and apparatus or system is provided for cleaning a flue gas and/or cooling a flue gas with a dispersed finely divided absorption liquid. As such, the absorption liquid is dispersed in a wet scrubber through which flue gas flows for absorption liquid and flue gas intermingling and contact to produce a cleaned flue gas. The absorption liquid supplied to the wet scrubber is dispersed from upwardly spraying anti-clogging nozzles and downwardly spraying nozzles arranged to maximize absorption liquid and flue gas contact with minimal spray interference between nozzles.Type: GrantFiled: May 9, 2016Date of Patent: October 18, 2016Assignee: General Electric Technology GmbHInventors: Dennis James Laslo, Rikard Hakansson, Fredrik Jens Brogaard, Kerstin Margareta Forsgren, Karl Hognefelt
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Patent number: 9440183Abstract: A wet scrubber (1) for cleaning a process gas containing sulphur dioxide comprises an absorption vessel (2) for contacting the process gas with an absorption liquid to absorb sulphur dioxide from the process gas, a sulphite sensor (68, 74) for measuring a sulphite concentration in the absorption liquid, and a control unit (52). The control unit (52) is adapted to receive a measurement signal from the sulphite sensor (68, 74) and to control, based on the measured sulphite concentration, at least one wet scrubber operating parameter influencing the sulphite concentration in the absorption liquid.Type: GrantFiled: October 8, 2012Date of Patent: September 13, 2016Assignee: ALSTOM Technology LtdInventors: Fredrik Jens Brogaard, Kerstin Forsgren, Mikael Larsson, Rikard Håkansson
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Publication number: 20160250587Abstract: A method and apparatus or system is provided for cleaning a flue gas and/or cooling a flue gas with a dispersed finely divided absorption liquid. As such, the absorption liquid is dispersed in a wet scrubber through which flue gas flows for absorption liquid and flue gas intermingling and contact to produce a cleaned flue gas. The absorption liquid supplied to the wet scrubber is dispersed from upwardly spraying anti-clogging nozzles and downwardly spraying nozzles arranged to maximize absorption liquid and flue gas contact with minimal spray interference between nozzles.Type: ApplicationFiled: May 9, 2016Publication date: September 1, 2016Inventors: Dennis James LASLO, Rikard HAKANSSON, Fredrik Jens BROGAARD, Kerstin Margareta FORSGREN, Karl HOGNEFELT
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Patent number: 9364781Abstract: A method and apparatus or system is provided for cleaning a flue gas and/or cooling a flue gas with a dispersed finely divided absorption liquid. As such, the absorption liquid is dispersed in a wet scrubber through which flue gas flows for absorption liquid and flue gas intermingling and contact to produce a cleaned flue gas. The absorption liquid supplied to the wet scrubber is dispersed from upwardly spraying anti-clogging nozzles and downwardly spraying nozzles arranged to maximize absorption liquid and flue gas contact with minimal spray interference between nozzles.Type: GrantFiled: October 11, 2013Date of Patent: June 14, 2016Assignee: ALSTOM Technology LtdInventors: Dennis James Laslo, Karl Hognefelt, Rikard Häkansson, Kerstin Forsgren, Fredrik Jens Brogaard
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Patent number: 9321025Abstract: A system and method for controlling oxidation of sulfites in a slurry. The system includes a tank having an inlet for receiving a slurry used in wet flue gas desulfurization. The tank also includes an inlet for receiving a gas. The inlet for receiving the gas is configured so that at least a portion of the gas received in the tank is dispersed through at least a portion of the slurry received in the tank. A sensor is configured to measure a sulfite concentration S1 of the slurry received in the tank. In some embodiments, the sensor is a sulfite analyzer. In other embodiments, the sensor is a virtual analyzer. The system includes a controller. Software executing on the controller generates a signal indicative of an adjustment of a flow rate of gas into the tank based at least in part on the sulfite concentration S1.Type: GrantFiled: June 11, 2015Date of Patent: April 26, 2016Assignee: ALSTOM Technology LtdInventors: Raymond Raulfs Gansley, Rikard Håkansson, Kerstin Margareta Forsgren, Dennis James Laslo
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Publication number: 20150336049Abstract: A wet scrubber (1) useful for cleaning a process gas comprises at least a first spray level system (20) and a second spray level system (26) arranged vertically above the first spray level system (20) in a wet scrubber tower (2). The first spray level system (20) comprises at least one gas-liquid contacting plate (38) which is operative for deflecting absorption liquid, that has been atomized by means of the second spray level system (26) and flowing downward in the wet scrubber tower (2), so deflected absorption liquid (AL) may contact process gas (F) contacted by absorption liquid atomized by the first spray level system (20).Type: ApplicationFiled: June 10, 2015Publication date: November 26, 2015Inventor: Rikard HÅKANSSON
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Publication number: 20150273428Abstract: A system and method for controlling oxidation of sulfites in a slurry. The system includes a tank having an inlet for receiving a slurry used in wet flue gas desulfurization. The tank also includes an inlet for receiving a gas. The inlet for receiving the gas is configured so that at least a portion of the gas received in the tank is dispersed through at least a portion of the slurry received in the tank. A sensor is configured to measure a sulfite concentration S1 of the slurry received in the tank. In some embodiments, the sensor is a sulfite analyzer. In other embodiments, the sensor is a virtual analyzer. The system includes a controller. Software executing on the controller generates a signal indicative of an adjustment of a flow rate of gas into the tank based at least in part on the sulfite concentration S1.Type: ApplicationFiled: June 11, 2015Publication date: October 1, 2015Inventors: Raymond Raulfs GANSLEY, Rikard HÅKANSSON, Kerstin Margareta FORSGREN, Dennis James LASLO
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Patent number: 9079131Abstract: A wet scrubber (1) useful for cleaning a process gas comprises at least a first spray level system (20) and a second spray level system (26) arranged vertically above the first spray level system (20) in a wet scrubber tower (2). The first spray level system (20) comprises at least one gas-liquid contacting plate (38) which is operative for deflecting absorption liquid, that has been atomized by means of the second spray level system (26) and flowing downward in the wet scrubber tower (2), so deflected absorption liquid (AL) may contact process gas (F) contacted by absorption liquid atomized by the first spray level system (20).Type: GrantFiled: November 16, 2011Date of Patent: July 14, 2015Assignee: ALSTOM Technology LtdInventor: Rikard Håkansson
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Publication number: 20150101485Abstract: A method and apparatus or system is provided for cleaning a flue gas and/or cooling a flue gas with a dispersed finely divided absorption liquid. As such, the absorption liquid is dispersed in a wet scrubber through which flue gas flows for absorption liquid and flue gas intermingling and contact to produce a cleaned flue gas. The absorption liquid supplied to the wet scrubber is dispersed from upwardly spraying anti-clogging nozzles and downwardly spraying nozzles arranged to maximize absorption liquid and flue gas contact with minimal spray interference between nozzles.Type: ApplicationFiled: October 11, 2013Publication date: April 16, 2015Inventors: Dennis James Laslo, Karl Hognefelt, Rikard Häkansson, Kerstin Forsgren, Fredrik Jens Brogaard
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Patent number: 8840714Abstract: A wet scrubber (1) and a method of using the wet scrubber to clean a process gas containing sulphur dioxide comprising at least one spray level system (20) with atomizing nozzles (38) to which an absorption liquid is supplied for atomization by the nozzles (38). The method comprises operating the spray level system (20) in at least a first operating mode with an active nozzle density of at least 0.7 nozzles/m2, an absorption liquid flow of at least 10 m3/hour per nozzle and a Total Flow of at least 30 m3/hour/m2.Type: GrantFiled: January 27, 2014Date of Patent: September 23, 2014Assignee: ALSTOM Technology LtdInventor: Rikard Hakansson
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Publication number: 20140230647Abstract: A wet scrubber (1) for cleaning a process gas containing sulphur dioxide comprises an absorption vessel (2) for contacting the process gas with an absorption liquid to absorb sulphur dioxide from the process gas, a sulphite sensor (68, 74) for measuring a sulphite concentration in the absorption liquid, and a control unit (52). The control unit (52) is adapted to receive a measurement signal from the sulphite sensor (68, 74) and to control, based on the measured sulphite concentration, at least one wet scrubber operating parameter influencing the sulphite concentration in the absorption liquid.Type: ApplicationFiled: October 8, 2012Publication date: August 21, 2014Inventors: Fredrik Jens Brogaard, Kerstin Forsgren, Mikael Larsson, Rikard Håkansson
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Publication number: 20140140898Abstract: A wet scrubber (1) and a method of using the wet scrubber to clean a process gas containing sulphur dioxide comprising at least one spray level system (20) with atomizing nozzles (38) to which an absorption liquid is supplied for atomization by the nozzles (38). The method comprises operating the spray level system (20) in at least a first operating mode with an active nozzle density of at least 0.7 nozzles/m2, an absorption liquid flow of at least 10 m3/hour per nozzle and a Total Flow of at least 30 m3/hour/m2.Type: ApplicationFiled: January 27, 2014Publication date: May 22, 2014Inventor: Rikard Hakansson
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Patent number: 8685141Abstract: A wet scrubber (1) and a method of using the wet scrubber to clean a process gas containing sulphur dioxide comprising at least one spray level system (20) with atomizing nozzles (38) to which an absorption liquid is supplied for atomization by the nozzles (38). The method comprises operating the spray level system (20) in at least a first operating mode with an active nozzle density of at least 0.7 nozzles/m2, an absorption liquid flow of at least 10 m3/hour per nozzle and a Total Flow of at least 30 m3/hour/m2.Type: GrantFiled: February 8, 2011Date of Patent: April 1, 2014Assignee: ALSTOM Technology LtdInventor: Rikard Hakansson
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Publication number: 20140069175Abstract: A sensor for detection and measurement of a particular substance present in a liquid is disclosed. The sensor includes a non-circular or non-symmetrically fixed electrode for detection and measurement of a particular substance present in a liquid in which said sensor is submersed. The sensor with non-circular or non-symmetrically fixed electrode and method of using the same reduces or eliminates electrode deformation upon residue removal therefrom thereby prolonging operating life.Type: ApplicationFiled: April 26, 2013Publication date: March 13, 2014Applicant: ALSTOM Technology LtdInventor: Rikard Håkansson