Liquid Applying Means For Electrode (e.g., Projection Type, Etc.) Patents (Class 96/44)
  • Patent number: 8852325
    Abstract: A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel (12a) in which at least one electrically positive collector electrode (20a) and at least one ionising electrode (18a) are arranged, between which an electrical field is present so that the particles having high electron affinity can be indirectly charged by corona discharge on the ionising electrode (18a) and can be displaced towards the collector electrode (20a).
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: October 7, 2014
    Assignee: EADS Deutschland GmbH
    Inventors: Sebastian Beer, Gerhard Müller, Jan Spannhake, Wolfgang Legner
  • Patent number: 8728203
    Abstract: A method and apparatus are provided for reducing waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent having blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method includes collecting the blow down water and providing it to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: May 20, 2014
    Assignee: EISENMANN Corporation
    Inventors: Joseph Shulfer, Eberhard Veit
  • Patent number: 8728204
    Abstract: A method and apparatus are provided for reducing quench water required by a wet electrostatic precipitator. The apparatus includes a wet electrostatic precipitator and an evaporator in flow communication with the wet electrostatic precipitator to evaporate at least one portion of bleed water discharged from the wet electrostatic precipitator into steam. The method includes directing at least one portion of bleed water discharged from the wet electrostatic precipitator to an evaporator and directing at least one portion of flue gas from a boiler to the evaporator. The energy of the at least one portion of flue gas is used to evaporate the at least one portion of the bleed water into steam. The steam is directed to the wet electrostatic precipitator. The at least one portion of flue gas is directed from the evaporator to the wet electrostatic precipitator.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: May 20, 2014
    Assignee: EISENMANN Corporation
    Inventors: Joseph Shulfer, Eberhard Veit
  • Publication number: 20140000455
    Abstract: An apparatus and method for removing mercury from an incoming gas stream contaminated with mercury so as to deliver an outgoing gas stream free of the removed mercury introduces ozone into the gas stream to deposit mercury carried by the gas stream on separator elements so as to remove the deposited mercury from the gas stream. The deposited mercury is washed off of the separator elements, and the removed mercury is collected for further processing.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Inventors: Isaac Ray, Boris Altshuler
  • Patent number: 8591629
    Abstract: A method and apparatus are provided for reducing waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent having blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method includes collecting the blow down water and providing it to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion of the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: November 26, 2013
    Inventors: Joseph Shulfer, Eberhard Veit
  • Patent number: 8323386
    Abstract: A compact electrostatic particulate collector for sampling contaminants has a collection chamber defined by a titanium inner surface of a wall. A potential inducer is disposed within the chamber to create a field potential between itself and the wall of the chamber. A blower is disposed to propel air to be sampled through the chamber. At least one rinse channel is disposed to wet the inner surface of the wall of the chamber substantially 100%. The rinse channel is angled to direct a rinse liquid in a spiral direction around the inner surface of the wall. Contaminants in the air being sampled are electro statically biased into the rinse liquid on the wall and rinsed out of the chamber for collection.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: December 4, 2012
    Assignee: Midwest Research Institute, Inc.
    Inventors: Joseph Matthew Langle, Buddy Justin Winheim, Noah Boydston, Steven D. Graham, Nancy Zamora Olivares, Mark Edward Reynolds, Thomas John Breier
  • Patent number: 8241396
    Abstract: This inventions provides a method for the removal of smut, fine dust and exhaust gas particles from polluted air including providing a particle catch arrangement with a charged surface, the particle catch arrangement being arranged to generate a static electric field, wherein the electric field is at least 0.2 kV/m. The invention further provides a particle catch arrangement including a surface that can be charged, further including a generator arranged to generate charge to the surface that can be charged and to generate a static electric field of at least 0.2 kV/m, wherein the particle catch arrangement is part of or integrated with an object including street furniture.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: August 14, 2012
    Assignee: Technische Universiteit Delft
    Inventors: Willibrordus Nicolaas Johannes Ursem, Johannes Cornelis Maria Marijnissen, Rein Andre Roos
  • Patent number: 8241398
    Abstract: The invention provides methods and apparatuses for removing aerosols and, in some cases, vapor phase contaminants, such as mercury, from a gas stream. One method is directed to the removal of additional aerosols from a gas stream from which aerosols have previously been removed by using a screen in combination with a primary aerosol collection device. Another method is directed to the removal of both aerosols and vapor phase contaminants by using a sorbent in combination with a screen. Another method is directed to the removal of vapor phase contaminants by using a catalyst to convert the contaminant to a form that is more easily removed from the gas stream and optionally injecting a chemical to increase the rate of conversion. The invention also provides various apparatuses for use in performing the various methods of the invention.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 14, 2012
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Mark Simpson Berry, Ramsay Chang
  • Patent number: 8092578
    Abstract: A method and apparatus are provided for reducing waste effluent from a system including a boiler and a wet electrostatic precipitator, the waste effluent having blow down water discharged by the boiler during a blow down operation and bleed water discharged by the wet electrostatic precipitator. The method includes collecting the blow down water and providing it to the wet electrostatic precipitator as a makeup water supplement, evaporating a portion of the bleed water and leaving residual bleed water, providing the evaporated bleed water to the wet electrostatic precipitator as a further makeup water supplement, and using the residual bleed water to quench ash produced by combustion of solid fuel by the boiler. The apparatus includes an evaporator that provides direct contact between hot boiler flue gas and the bleed water such that a portion of the flue gas is quenched before being provided to the wet electrostatic precipitator.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: January 10, 2012
    Assignee: Eisenmann Corporation
    Inventors: Joseph Shulfer, Eberhard Veit
  • Patent number: 8088198
    Abstract: A wet electrostatic precipitator (1) includes an inlet (2) for receiving a gas (4) containing a pollutant, and an outlet (6) for discharging therefrom the gas (8) from which said pollutant has been at least partially removed. Nozzles (24) are operative for purposes of spraying liquid onto at least one first vertical collecting surface (30) of at least one collecting electrode (18). A liquid distributor (42) is provided for purposes of pouring liquid onto at least one second vertical collecting surface (44), said at least one second vertical collecting surface (44) being located on a further collecting electrode (36), with said further collecting electrode (36) being located downstream of said at least one collecting electrode (18). The nozzles (24) are located upstream of the liquid distributor (42), as viewed with reference to the direction of flow of the gas.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: January 3, 2012
    Assignee: ALSTOM Technology Ltd
    Inventors: Sune Bengtsson, Rikard Hakansson
  • Patent number: 8043413
    Abstract: An embodiment of the present invention provides a system for removing foreign objects from the airstream entering an inlet system of a turbomachine. The system may include an electrostatic system that may be configured to charge conductive, or partially conductive foreign objects that are in the airstream flowing through the system. This system may create an electric field to draw the charged foreign objects, allowing for a collecting section to remove the charged foreign objects from the airstream. An embodiment of the present invention may provide an automatic accumulation system for collecting the foreign objects removed from the airstream. An embodiment of the present invention may provide an automatic cleaning system for cleaning components of the collecting system.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 25, 2011
    Assignee: General Electric Company
    Inventors: Rahul J. Chillar, Stephen D. Hiner, Aaron M. Smith
  • Publication number: 20110252965
    Abstract: The invention relates to an electro-filter (1) for exhaust gas cleaning and/or heat recovery, particularly also for exhaust gas cleaning for the exhaust gases of biomass firings, in which the electro-filter (1) has a precipitation chamber (2) through which the exhaust gas is passed, whereby a charging device (6) for electrostatic charging of particles present in the exhaust gas is disposed in the region of the precipitation chamber (2) or adjacent to the precipitation chamber (2).
    Type: Application
    Filed: November 19, 2009
    Publication date: October 20, 2011
    Inventors: Tobias Boehm, Hermann Kuhrmann, Julius Rawe
  • Patent number: 7824475
    Abstract: According to one aspect of the invention a device for purification of air is provided, including a metal plate electrical connections connected to the metal plate in order to impress a voltage on the metal plate, a heating element for heating the metal plate, and a nozzle connected to a water supply in order to spray the metal plate with water. In further embodiments the device includes a metallic cylinder, a fan disposed at one end of the cylinder and a restriction disposed at the other end of the cylinder, together with live coils for providing an electric field, where the centre of the electric field around the coils coincides with the location of the device's other units.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: November 2, 2010
    Inventors: Hans-Jacob Fromreide, Tomm Slater
  • Patent number: 7763101
    Abstract: The present invention provides a water-flowing mechanism in a wet type electrostatic precipitator that can stably and quickly form a water film on a dust-collecting plate even at the beginning of the operation and that has an excellent adjusting function of a supplying flow-rate of washing liquid. The present invention includes a dust-collecting plate, a washing liquid supplying source to wet the dust-collecting plate, and a cylindrical member that is opened according to the shape of the upper end face of the dust-collecting plate and into which the washing liquid supplying source is inserted, wherein the horizontal cross-section of the dust-collecting plate is formed in a corrugated shape, and the lower opening of the cylindrical member is formed in a corrugated shape according to the dust-collecting plate.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: July 27, 2010
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Sachio Maekawa, Mitsuaki Yanagida, Shinichi Kawabata, Keigo Orita, Yoshihiko Mochizuki
  • Publication number: 20100154631
    Abstract: An embodiment of the present invention provides a system for removing foreign objects from the airstream entering an inlet system of a turbomachine. This system may include an electrostatic system that may be configured to charge conductive, or partially conductive foreign objects that are in the airstream flowing through the system. This system may create an electric field to drawing the charged foreign objects, allowing for a collecting section to remove the charged foreign objects from the airstream. An embodiment of the present invention may provide an automatic accumulation system for collecting the foreign objects removed from the airstream. An embodiment of the present invention may provide an automatic cleaning system for cleaning components of the collecting section.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventors: Rahul J. Chillar, Stephen D. Hiner, Aaron M. Smith
  • Patent number: 7682427
    Abstract: A tubular collector for precipitating electrically loaded aerosols from a gas stream stands vertically in a gas stream duct. The stream flows upwards in the section. The tubular collector includes at least one group of pipe bundle which extends at the most over the internal width of the duct and including at least one dimensionally stable pipe bundle whose lower side or side that faces the flow rests on a grating or perforated metal sheet connected to an electric reference potential. At least the top side or side away from the stream of a group of pipe bundles is uniformly sprayed with rinsing liquid. The pipes of a group of pipe bundles are held apart by spacers so that the stream flows over their outer and inner sides. The pipes of a group of pipe bundles are identical and have different adjustment heights. The pipes have such a length that at least when a turbulent flow enters one pipe, a laminar gas stream is formed downstream.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: March 23, 2010
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Andrei Bologa, Hanns-Rudolf Paur, Klaus Woletz, Thomas Wäscher
  • Patent number: 7662219
    Abstract: An electrostatic precipitator that can prevent the corrosion of a discharge electrode even if a gas to be treated containing a corrosive mist is treated. In an electrostatic precipitator having a discharge electrode arranged along a flow path of the gas to be treated, a spray nozzle that can spray a water to the upstream side of the discharge electrode is mounted. A wet film is formed on the surface of the discharge electrode with the water sprayed from the spray nozzle. The sprayed water is desirably a water vapor or a water droplet having a particle diameter of less than 10 ?m.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: February 16, 2010
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Sachio Maekawa, Mitsuaki Yanagida, Shinichi Kawabata, Keigo Orita, Yoshihiko Mochizuki
  • Publication number: 20100031823
    Abstract: The disclosed electrostatic precipitator cartridge for a tower air cleaner in accord with the present invention is low-cost, because constructed of injected molded plastics material and stamped and extruded metal components. It is easy to clean, not only because it's constitutive metal parts and plastic components are machine washable but also because the cartridge as a whole is machine washable, the pieces and components are designed and arranged to prevent intracartridge fluid buildup or retention after washing, thereby eliminating any electrical shorting or arcing or other undesirable phenomena resulting therefrom that could interfere with the operation of the electrostatic filter cartridge.
    Type: Application
    Filed: October 14, 2009
    Publication date: February 11, 2010
    Inventors: Ross L. Cowie, Rudy A. Vandenbelt
  • Patent number: 7641718
    Abstract: The electrostatic precipitator (1) includes the housing (8) having the air duct (7) for communicating between the inlet (4) for sucking the contaminated air (3) and the outlet (6) for discharging the cleaned air (5), the air flow generator (10) generating the air flow (9) in the air duct (7), the collecting section (14) having a plurality of adsorption plates (13) rotating in accordance with the adsorption shaft (11), and the discharge section (24) equipped with the charging plate (20) having the discharge surface (21) opposing the adsorption surface (12) of the adsorption plate (13) and a plurality of the discharge electrodes (19) provided at the edge (22) of the charging plate (20) opposite the suction inlet.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 5, 2010
    Assignees: Zesu Giko Co., Ltd, Hidec Co., Ltd
    Inventors: Masatoshi Furuta, Shigenobu Ohkura
  • Patent number: 7632341
    Abstract: A hybrid, wet electrostatic precipitator has multiple precipitation zones for removing particulate and contaminants from a flue gas stream. A first precipitation zone has at least one discharge electrode and at least one collection plate made of a metal or a fiber glass reinforced plastic. A second precipitation zone has at least one discharge electrode and at least one collecting electrode which is a porous membrane sheet. The precipitation zones are in series with one another.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: December 15, 2009
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Ronald J. Triscori, Albert L. Moretti, Robert E. Snyder, Donald P. Tonn
  • Publication number: 20090173230
    Abstract: A device for purification of air comprising: a metal plate, electrical connections connected to the metal plate in order to impress a voltage on the metal plate, a heating element for heating the metal plate, a nozzle connected to a water supply in order to spray the metal plate with water. In further embodiments the device also comprises a metallic cylinder, a fan disposed at one end of the cylinder and a restriction disposed at the other end of the cylinder, together with live coils for providing an electric field, where the centre of the electric field round the coils coincides with the location of the device's other units.
    Type: Application
    Filed: June 27, 2002
    Publication date: July 9, 2009
    Inventors: Hans-Jacob Fromreide, Tomm Slater
  • Publication number: 20090114092
    Abstract: A wet electrostatic precipitator (1) comprises an inlet (2) for receiving a gas (4) containing a pollutant, and an outlet (6) for discharging therefrom the gas (8) from which said pollutant has been at least partially removed. Nozzles (24) are operative for purposes of spraying liquid onto at least one first vertical collecting surface (30) of at least one collecting electrode (18). A liquid distributor (42) is provided for purposes of pouring liquid onto at least one second vertical collecting surface (44), said at least one second vertical collecting surface (44) being located on a further collecting electrode (36), with said further collecting electrode (36) being located downstream of said at least one collecting electrode (18). The nozzles (24) are located upstream of the liquid distributor (42), as viewed with reference to the direction of flow of the gas.
    Type: Application
    Filed: May 23, 2007
    Publication date: May 7, 2009
    Inventors: Sune Bengtsson, Rikard Hakansson
  • Patent number: 7479175
    Abstract: An air purifier includes a collector electrode assembly removable from an opening on the top surface of the unit and a safety lid detached from the collector electrode assembly for covering the opening on the top surface of the unit. The safety lid is configured to cover the opening whether the collector electrode assembly is at rest within the housing or has been removed from the housing for cleaning.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: January 20, 2009
    Assignee: Sylmark Holdings Limited
    Inventor: Peter Spiegel
  • Publication number: 20080295687
    Abstract: The invention concerns a device for air/water extraction by semi-humid electrostatic collection, comprising a chamber (7) containing a discharge electrode (1) for generating an ion flow from an ionized gas accumulation surrounding the discharge electrode (1) and a counter-electrode (2), an inlet (3) for mixing air and aerosol to be extracted which contains liquid or solid particles, a steam supply tube (8) and an outlet (4) for cleansed air. The invention is characterized in that the device enables stream to be introduced through said steam supply tube (8) in the gap between the discharge electrode (1) and the counter-electrode (2) so as to form a steam sheath (10) enclosing the discharge electrode over its entire length, such that the treated air is not steam-saturated.
    Type: Application
    Filed: July 24, 2006
    Publication date: December 4, 2008
    Inventors: Ernest Galbrun, Jean Luc Achard, Yves Fouillet, Raymond Charles
  • Patent number: 7459009
    Abstract: An apparatus for removing particulate matter from a gas stream containing particulate matter, the apparatus including: a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; and a down flow Wet Electrostatic Precipitator (WESP) pass section having ionizing electrodes that electrically charge the particulate matter and the intermixed liquid droplets, and collecting surfaces in the form of an array of polygonal tubes, wherein the collecting surfaces are under the influence of an electrical field to attract and remove electrically-charged particulate matter and intermixed liquid droplets from the gas stream. An embodiment utilizing two down-flow Wet Electrostatic Precipitator (WESP) sections (i.e.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: December 2, 2008
    Assignee: Eisenmann Corporation
    Inventors: Isaac Ray, Mark A. West, Boris Altshuler
  • Patent number: 7427313
    Abstract: The device according to the invention includes a drip chamber, which is adapted for connecting to the ordinary water mains, a metal plate and a nozzle that is connected to the drip chamber and disposed above the metal plate and a collecting vessel. The object of the drip chamber is to convert the continuous flow of water from the water mains into discrete drops, thus forming a water reservoir in the bottom of the drip chamber, which is electrically insulated from the water supply while the reservoir still receives a constant new supply of water. Water from the reservoir is passed on to the nozzle and sprayed over the steel plate. An impressed voltage on the nozzle and thereby the water attracts the impurities in the air and these will bind to the water and follow it when the water runs down into a collecting vessel, which is subsequently emptied into the house's drainage system.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: September 23, 2008
    Inventors: Hans-Jacob Fromreide, Tomm Slater
  • Publication number: 20080216659
    Abstract: The present invention provides a water-flowing mechanism in a wet type electrostatic precipitator that can stably and quickly form a water film on a dust-collecting plate even at the beginning of the operation and that has an excellent adjusting function of a supplying flow-rate of washing liquid. The present invention includes a dust-collecting plate, a washing liquid supplying source to wet the dust-collecting plate, and a cylindrical member that is opened according to the shape of the upper end face of the dust-collecting plate and into which the washing liquid supplying source is inserted, wherein the horizontal cross-section of the dust-collecting plate is formed in a corrugated shape, and the lower opening of the cylindrical member is formed in a corrugated shape according to the dust-collecting plate.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 11, 2008
    Applicant: HITACHI PLANT TECHNOLOGIES, LTD.
    Inventors: Sachio Maekawa, Mitsuaki Yanagida, Shinichi Kawabata, Keigo Orita, Yoshihiko Mochizuki
  • Publication number: 20080216658
    Abstract: The present invention provides a wet-type electrostatic precipitator that can prevent the corrosion of a discharge electrode even if a gas to be treated containing a corrosive mist is treated. In a wet-type electrostatic precipitator having a discharge electrode 14 arranged along a flow path of the gas to be treated 10, a spray nozzle 28 that can spray a water to the upstream side of the discharge electrode 14 is mounted, wherein a wet film is formed on the surface of the discharge electrode 14 with the water sprayed from the spray nozzle 28. The sprayed water is desirably a water vapor or a water droplet having a particle diameter of less than 10 ?m.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 11, 2008
    Applicant: HITACHI PLANT TECHNOLOGIES, LTD.
    Inventors: Sachio Maekawa, Mitsuaki Yanagida, Shinichi Kawabata, Keigo Orita, Yoshihiko Mochizuki
  • Publication number: 20080072759
    Abstract: The present invention relates to a filter device for separating particles from a gaseous fluid sucked in by a gas turbine, the filter device having a vertically situated tubular electric filter. Maintenance work on a gas turbine may thus be significantly reduced and, in addition, a higher gas turbine output may be achieved due to low pressure loss of the tubular electric filter.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 27, 2008
    Inventors: Miroslav Podhorsky, Thomas Riepe, Timo Seppaelae
  • Patent number: 7318857
    Abstract: An apparatus for removing particulate matter from a gas stream containing particular matter, the apparatus comprising: a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; a down-flow Wet Electrostatic Precipitator (WESP) section comprising ionizing electrodes that electrically charge the particulate matter and the intermixed liquid droplets, and collecting surfaces under the influence of an electrical field which attract and remove electrically-charged particulate matter and intermixed liquid droplets from the gas stream; and an up-flow WESP section comprising electrically-charged ionizing and collecting electrodes that remove, from the gas stream, substantially all fine-sized droplets generated in the down-flow WESP section.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: January 15, 2008
    Assignee: Eisenmann Corporation
    Inventors: Isaac Ray, Mark A. West, Boris Altshuler
  • Publication number: 20070295208
    Abstract: A collection device for collecting particles from a gas is provided. The device comprises a passage defined by a wall and at least one electrical field within the passage for charging particles, where the particles are in a gas. The device further comprises a moving collection surface for collecting charged particles. The moving collection surface is located within the at least one passage. The moving collection surface rotates through the at least one electrical field and then rotates to a detection device for detection of the particles.
    Type: Application
    Filed: August 31, 2006
    Publication date: December 27, 2007
    Applicant: SCEPTOR INDUSTRIES, INC.
    Inventor: Andrew R. Fairchild
  • Patent number: 7297182
    Abstract: An apparatus for removing particulate matter from a biomass combustion gas stream, the apparatus having a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; a Wet Electrostatic Precipitator (WESP) section that includes ionizing electrodes that electrically charge the particulate matter and the intermixed liquid droplets and collecting surfaces under the influence of an electrical field which attract and remove electrically-charged particulate matter and intermixed liquid droplets from the gas stream; and a scrubbing section that provides for additional scrubbing of the gas.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: November 20, 2007
    Assignee: Eisenmann Corporation
    Inventors: Isaac Ray, Mark A. West, Boris Altshuler, Bradley L. Ginger
  • Patent number: 7297185
    Abstract: An electrostatic dust precipitator (1) is constructed mainly to include a housing (11) in which an air path (10) communicating between an inlet (8) and an outlet (9), an airstream generating unit (14) that causes generation of an airstream in the air path (10), a discharging unit (2) and a discharge guide unit (3) that charge fine particulate (103) with a corona discharge (100), a charging unit (4) that causes the fine particulate (103) charged with the corona discharge (100) to repel in accordance with a coulomb force, an attracting unit (5) that allows the fine particulate (103) to be attracted in accordance with the coulomb force and that thereby collects the fine particulate (103), a voltage supply unit (15) that supplies a discharge voltage for generation of the corona discharge (100) and for repelling by the charging unit (4) in accordance with the coulomb force, and a drive controller unit (20) that causes rotational driving of discharge plates and attracting plates.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: November 20, 2007
    Assignees: Zesu Giko Co., Ltd., Hidec Co., Ltd.
    Inventors: Masatoshi Furuta, Shigenobu Ohkura
  • Patent number: 7273516
    Abstract: A plate heat exchanger for exchanging heat between a first air stream and a second air stream includes a plurality of plates limiting first and second exchange chambers which are serially arranged in a transversal direction with respect to the plates. A first air stream of outside air passes through the first exchange chambers, a second air stream originating from ventilated rooms passes through the second exchange chambers. The heat exchanger further includes an ionization device for ionizing particles entrained in the first air stream so that the particles deposit at conductive plates of the first exchange spaces, a water distribution system for periodically discharging water into the first exchange spaces for cleaning the plates of the heat exchanger from deposited particles, and a water collection device for discharging collected water.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: September 25, 2007
    Assignee: Mentus Holding AG
    Inventor: Urs A. Weidmann
  • Patent number: 7270697
    Abstract: Electrostatic precipitators, including wet electrostatic precipitators, having a bank of conductive tubes which receive a gas stream having entrained particulates and an electrode connected to an electric current, wherein the tubes each include an internal restriction creating a hydrostatic pressure more evenly distributing the gas flow between the tubes eliminating the requirement for flow distribution devices, such as air straighteners and perforated plates.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: September 18, 2007
    Assignee: Durr Systems, Inc.
    Inventor: Donald I. McAnespie
  • Patent number: 7261764
    Abstract: The present invention relates to a methods, apparatuses and systems that utilize electric currents to direct the deposition of particulate matter to various surfaces.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: August 28, 2007
    Assignee: Sarnoff Corporation
    Inventor: Timothy Allen Pletcher
  • Patent number: 7156899
    Abstract: The present invention provides a power generation facility that is adapted to clean large air masses. Air from the environment, which normally contains the most pollutants, is directed into an air flow path through which large quantities of air are directed by a plurality of large diameter fans. The large air flow is directed through electrically insulated cooling fins which cool heated gas from power generators. The electrically insulated cooling fans have a voltage applied thereto and act as electrodes used to produce an electric field that attracts particles such as pollutants. In a preferred embodiment, a charging section is utilized within the air flow prior to the electrically insulated cooling fins to charge the particles with a charge opposite to the voltage applied to the cooling fins to thereby attract the particles to the cooling fins. A cooling fin washing system with pressurized jets is provided in one embodiment to wash the pollutants from the surface of the cooling fins.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: January 2, 2007
    Assignee: Canatxx Energy, L.L.C.
    Inventors: Ross K. Hill, Paul J. Grimes, Charles E. Lawrence
  • Patent number: 7115153
    Abstract: Electric oil separator that separates oil from an airflow of a ventilator. The separator includes an emission electrode and a collecting electrode. Moreover, the separator includes an injection device structured and arranged to inject oil as a cleaning fluid onto at least one of the emission electrode and the collecting electrode, so as to inject oil obliquely to a longitudinal axis of the collecting electrode.
    Type: Grant
    Filed: January 11, 2005
    Date of Patent: October 3, 2006
    Assignee: Hengst GmbH & Co. KG
    Inventors: Stephan Ahlborn, Dieter Baumann, Bernhard Batram
  • Patent number: 6958088
    Abstract: A carbon separation and collection device used for a high performance dust collector includes a water supply tube, a water pump, a high pressure negative electrode discharge device, a high pressure positive electrode discharge device, a rotary brush, a removing plate, a carbon collector, a liquid tank, and a speed change device and an exhausting tube. The two discharge devices serve to achieve a function of electrolyte. When the cleaning liquid with carbon flows into the water supply tube by using the water pump. The carbon is adhered to the high pressure positive electrode discharge device. The high pressure positive electrode discharge device is driven to rotate by the speed change device. The carbon is moved from the high pressure positive electrode discharge device by the rotary brush and removing plate. Then, the removing carbon drops into the carbon collector.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: October 25, 2005
    Inventor: Toshio Moriyama
  • Patent number: 6858064
    Abstract: In an apparatus for the purification of a gas which apparatus includes a three section conduit with an ionization and cleaning section in which particles contained in water-saturated air are ionized and then conducted through a chamber with grounded walls so that part of the particles are deposited on these walls, an additional cleaning section which includes grounded tubes past which the gas is conducted to remove additional charged particles and a filter section in which dry remaining fine particles are removed from the gas stream, the deposited particles are flushed from all three sections and the flushing water including the particles is cleaned and recycled.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: February 22, 2005
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Andrei Bologa, Thomas Wäscher, Hans-Rudolf Paur, Werner Baumann
  • Patent number: 6783575
    Abstract: A laminar flow, wet electrostatic precipitator (ESP) with planar collecting electrodes preferably made of membranes, such as a woven silica fiber. The collecting electrodes are spaced close to planar discharge electrodes to promote laminar flow (Re<2300). Charging electrodes are positioned upstream of the wet ESP to charge the particulate entering the wet ESP to promote collection. The wet ESP is preferably downstream from a conventional turbulent dry ESP for collecting a substantial portion of the larger particulate in the gas stream prior to the gas stream entering the wet ESP.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 31, 2004
    Assignee: Ohio University
    Inventors: Hajrudin Pasic, M. Khairul Alam, David J. Bayless
  • Publication number: 20030217642
    Abstract: A laminar flow, wet electrostatic precipitator (ESP) with planar collecting electrodes preferably made of membranes, such as a woven silica fiber. The collecting electrodes are spaced close to planar discharge electrodes to promote laminar flow (Re<2300). Charging electrodes are positioned upstream of the wet ESP to charge the particulate entering the wet ESP to promote collection. The wet ESP is preferably downstream from a conventional turbulent dry ESP for collecting a substantial portion of the larger particulate in the gas stream prior to the gas stream entering the wet ESP.
    Type: Application
    Filed: May 9, 2003
    Publication date: November 27, 2003
    Inventors: Hajrudin Pasic, M. Khairul Alam, David J. Bayless
  • Publication number: 20030196552
    Abstract: An apparatus for removing particles from air, including an inlet for receiving a flow of air, a first chamber in flow communication with the inlet, wherein a charged spray of semiconducting fluid droplets having a first polarity is introduced to the air flow so that the particles are electrostatically attracted to and retained by the spray droplets, and an outlet in flow communication with the first chamber, wherein the air flow exits the apparatus substantially free of the particles. The first chamber of the apparatus further includes a collecting surface for attracting the spray droplets, a power supply, and a spray nozzle connected to the power supply for receiving fluid and producing the spray droplets therefrom. The apparatus may also include a second chamber in flow communication with the inlet at a first end and the first chamber at a second end, wherein particles entrained in the air flow are charged with a second polarity opposite the first polarity prior to the air flow entering the first chamber.
    Type: Application
    Filed: October 29, 2002
    Publication date: October 23, 2003
    Applicant: The Procter and Gamble Company
    Inventors: Alan David Willey, Vladimir Gartstein, Chinto Benjamin Gaw
  • Patent number: 6632267
    Abstract: The invention relates to a method and device for separating materials in the form of particles and/or drops from a gas flow, in which method the gas flow is directed through a collection chamber the outer walls of which are grounded, and in which high tension is directed to the ion yield tips arranged in the collection chamber, thus providing an ion flow from the ion yield tips towards the collection surfaces, separating the desired materials from the gas flow. It is characteristic of the invention that the collection surfaces conducting electricity are electrically insulated from the outer casings; and that high tension with the opposite sign of direct voltage as the high tension directed to the ion yield tips is directed to the collection surfaces. According to an embodiment of the invention the electrical insulation is made of ABS, and the surface conducting electricity comprises a thin chrome layer arranged on the insulation layer.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: October 14, 2003
    Inventor: Veikko Ilmasti
  • Patent number: 6579349
    Abstract: An electrostatic precipitator includes an upright hollow body having a lower smoke inlet and an upper smoke outlet, with a pair of spaced horizontal partitions formed in the hollow body between the inlet and outlet. A set of parallel ducts extends vertically between the partitions, and a pair of distributor frames is arranged in the hollow body, with one of the distributor frames disposed over the ducts and the other of the distributor frames disposed under the ducts. Between the distributor frames is stretched a plurality of wires that extend through respective ducts. Furthermore, each of the distributor frames is formed with a plurality of terminals to be electrically connected to one electrode of a DC high-voltage power supply, but the ducts are adapted to be electrically connected to the other electrode of the DC high-voltage power supply.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: June 17, 2003
    Inventors: Chein-Bang Ting, Min-Yi Chu
  • Patent number: 6533841
    Abstract: Filter plates in an electro-filter are cleaned using nozzles which, during spraying, are displaced longitudinally with the side edges of the filter plates while at the same time being rotated. The nozzles are mounted in a plane slightly different from the plane of the filter plates to enable the spray jets to reach the furthermost areas of the plates when the nozzles are at the greatest angle of incidence during washing.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: March 18, 2003
    Assignee: Toftejorg A/S
    Inventor: Erik Lund Jepsen
  • Patent number: 6530981
    Abstract: A device for cleaning a gas, which combines together in a single unit an Inertial Separator and an Electrostatic Precipitator, so as to reduce or eliminate the shortcomings of the latter two types of devices when they are used separately, and to synergistically enhance the efficiency and effectiveness compared to when they are operated separately in series.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: March 11, 2003
    Inventor: Scotlund Stivers
  • Patent number: 6506232
    Abstract: Ionizing apparatus includes a housing that supports a plurality of ionizing electrodes disposed within fluid apertures that are connected via tubing conduits to pass fluid therethrough about the electrodes. Gas to be ionized is supplied under pressure to the apertures transporting gas ions generated at the electrodes in response to high ionizing voltage supplied thereto. To clean the ionizing apparatus, cleaning liquid is supplied under pressure in one flow direction through the tubing conduits and apertures to remove particles from within the tubing conduits and apertures and from surfaces of the electrodes.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: January 14, 2003
    Assignee: Ion Systems, Inc.
    Inventor: John E. Menear
  • Publication number: 20030000388
    Abstract: There are provided a dust collector and method for collecting dust in which the rarefaction of a dielectric at the rear part of electric field forming means is prevented, whereby the collecting efficiency can be increased.
    Type: Application
    Filed: August 27, 2002
    Publication date: January 2, 2003
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazutaka Tomimatsu, Yasutoshi Ueda
  • Publication number: 20030000384
    Abstract: There are provided a dust collector and method for collecting dust in which the rarefaction of a dielectric at the rear part of electric field forming means is prevented, whereby the collecting efficiency can be increased.
    Type: Application
    Filed: August 27, 2002
    Publication date: January 2, 2003
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazutaka Tomimatsu, Yasutoshi Ueda