Coagulating Or Flocculating Agent Patents (Class 95/152)
  • Patent number: 9815025
    Abstract: Corrosion in a CO2 removal system is reduced or even entirely avoided by use of a metal ion chelator unit that removes metal ions, and especially iron ions from an amine solvent to a level of equal or less than 1 mg/l without substantially binding heat stable salts.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: November 14, 2017
    Assignee: Fluor Technologies Corporation
    Inventors: Satish Reddy, Joseph Yonkoski
  • Patent number: 9513115
    Abstract: In order to be able to test completely transparent surfaces (22) as well as mirror surfaces (22) with optical testing methods in which light (3) is radiated onto the surface (22) to be tested and the light reflected by the surface (22) is checked by an optical test unit (6a, b) a precipitation of moisture is generated on the surface before optical testing, wherein the precipitation is generated in the form of plural small liquid droplets (8) on the surface (22) which causes a diffuse reflection of the irradiated light.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: December 6, 2016
    Assignee: SmartRay GmbH
    Inventor: Torsten Gruhn
  • Publication number: 20130174734
    Abstract: The invention is directed to decreasing the amount of particulate material suspended in air or water, in any situation in which it is desired to decrease the amount of particulate material in suspension, and especially in industrial processes that generate particulate material suspended in air or water. In particular, the invention is directed to decreasing the particulate material in suspension by means of agglomeration with negatively charged ExoPolySaccharides (EPS). To decrease the amount of particulate material suspended in air, this can be sprayed with a negatively charged EPS solution according to the invention, or the EPS can be immobilized on a filter which the air with particulate material passes through. To decrease the amount of particulate material in water, a suspension with a negatively charged EPS solution according to the invention is added to said water, which agglomerates and settles the particulate material by means of the charge attraction principle.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 11, 2013
    Applicant: Cultivos Hidrobiologicos y Biotecnologia Aguamarina S.A.
    Inventor: Cultivos Hidrobiologicos y Biotecnologia Aguamarina S.A.
  • Patent number: 8298321
    Abstract: A river water utilizing flue gas desulfurization system 10 according to an embodiment of the present invention includes: a pre-treatment facility 13 that removes humic substances in river water 11 to produce makeup water 12; and a desulfurization apparatus 17 that brings sulfur content in flue gas 15 into contact with limestone gypsum slurry 16 in an apparatus body 14. The pre-treatment facility 13 includes a flocculant mixing basin 22 in which a flocculant 21 is added to the river water 11 to flocculate and remove the humic substances contained in the river water 11; and an activated carbon absorption unit 23 in which the humic substances contained in the river water 11 are absorbed and removed by way of activated carbon.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: October 30, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Nobuyuki Ukai, Takashi Yoshimoto, Tatsuto Nagayasu, Susumu Okino
  • Publication number: 20120067213
    Abstract: A method, apparatus and system for minimizing a quantity of particulate matter entrained within a gas stream is provided. A course filter removes at least a portion of particulate matter having a relatively-large particle size from the gas stream. An agglomerator agglomerates particulate matter having a relatively-small particle size remaining in the gas stream into particulate clusters after the portion of the particulate matter having the relatively-large particle size has been removed by the course filter. An injector introduces an agglomerating material into the gas stream before the gas stream enters the agglomerator. The agglomerating material promotes agglomeration of the particulate matter having the relatively-small particle size into the particulate clusters. And a second filter receives the gas stream and removes at least a portion of the particulate clusters entrained within the gas stream exiting the agglomerator.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 22, 2012
    Applicant: General Electric Company
    Inventors: Bradley Stephen Rogers, James Easel Roberts
  • Patent number: 8137444
    Abstract: Systems and methods for lowering levels of carbon dioxide and other atmospheric pollutants are provided. Economically viable systems and processes capable of removing vast quantities of carbon dioxide and other atmospheric pollutants from gaseous waste streams and sequestering them in storage-stable forms are also discussed.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: March 20, 2012
    Assignee: Calera Corporation
    Inventors: Kasra Farsad, Robert W. Elliott, Richard P. O'Connor, William Randall Seeker, Kyle Self, Justin Wall
  • Patent number: 7951227
    Abstract: This disclosure teaches a composition and process which makes it possible to remove floating particulates or prevent the dissemination or particulates, by the misting of a solution that readily captures any particulate material in the air. More specifically, the present disclosure teaches the composition and use of aromatic compounds that are semi-volatile organic compounds (SVOCs) or slow evaporators in water-based carriers with surfactants as the misting/fogging agent for dust suppression. The particulate material is lowered to surfaces and removed by vacuuming, damp-wiping or using a dry cloth with a cationic charge (static cloth). This method can be achieved with neutral air pressure differentials in the work areas.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: May 31, 2011
    Inventors: Greg Weatherman, Marcia Celusnek Cash
  • Publication number: 20090235818
    Abstract: A method of removing elemental mercury from gas phase fluids by contacting the gas with an organic compound dissolved in a gas scrubbing liquid.
    Type: Application
    Filed: October 17, 2008
    Publication date: September 24, 2009
    Inventor: Carl E. Hensman
  • Publication number: 20090194606
    Abstract: This provides a method for producing fine particles of liquid or a mixture of liquids that contains dissolved solids in it. This particularly applies to solutions of salts that specially need to be added to gaseous streams at temperatures above ambient. The method can also be applied for producing very fine particles and aerosols of materials that are normally solid or liquid by selecting appropriate solvent, pressure and temperature.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Inventor: Rabindra K. Sinha
  • Publication number: 20090133577
    Abstract: A method of drying liquid and gaseous hydrocarbons by contacting a feed stream of the hydrocarbon with an aqueous solution of a salt drying agent prior to passing the stream through a salt dryer to remove part of the water in the stream. The aqueous solution of the salt drying agent is generated in the salt dryer when the partly dried stream comes into contact with the drying salt and forms the solution. The solution is circulated in a loop from the salt dryer to the incoming feed and then through a liquid/liquid coalescer which removes a portion of the water together with dissolved salt from the mixture before the mixture is passed on to the salt dryer where further removal of water occurs. The salt dryer is off-loaded by a substantial factor by the initial partial dehydration and does not require to remove such a large amount of water; the salt consumption is therefore reduced in proportion to the amount of water removed in the treatment steps which precede the dryer.
    Type: Application
    Filed: October 24, 2008
    Publication date: May 28, 2009
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Robert J. Falkiner, Bal K. Kaul
  • Patent number: 7179385
    Abstract: The invention is a composition and method for treating paint booth water systems to facilitate paint removal. The composition comprises water, solid particles of insoluble organic polymer, such as, by way of non-limiting example, urea methanal copolymer, preferably including less than 50 weight percent of particles of diameter of 1 micron or less, and optionally surfactants, thickeners, polymeric flocculents different from the organic polymer, clarifiers, anti-corrosive components, and/or biocides.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: February 20, 2007
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Kathryn E. Foster
  • Patent number: 6942840
    Abstract: The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxidant, in a liquid environment to form a mercury-containing precipitate. The mercury-containing precipitate is kept or placed in solution and reacts with one or more additional reagents to form a solid, stable mercury-containing compound.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: September 13, 2005
    Assignee: ADA Technologies, Inc.
    Inventor: Thomas E. Broderick
  • Patent number: 6638432
    Abstract: Disclosed is a method of removing heavy metals contained in exhaust gas which has been generated by burning a waste liquid containing the heavy metals discharged in a process of producing organic compounds. The method includes the steps in the order of: (a) a combustion step of burning the waste liquid to produce exhaust gas; (b) a gas-liquid contact step of rendering a liquid containing an alkali compound in contact with the exhaust gas to collect the heavy metals in bottoms of the liquid; and (c) a coagulating step of adding a coagulant to the bottoms to coagulate the heavy metals in the bottoms for removal of the heavy metals. According to this method, the heavy metals contained in the exhaust gas can be efficiently separated and removed.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: October 28, 2003
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yukihiro Matsumoto, Takeshi Nishimura, Kazuto Okazaki, Kiyotaka Watanabe
  • Patent number: 6627086
    Abstract: Aqueous suspensions of paints in waste waters can be treated to detackify the paint and facilitate its removal by contacting the paint suspension at a pH of from about 5 to about 14 with a polyarylamine that is produced by reacting an aldehyde with an arylamine in the presence of an acid in an aqueous suspension. The same polyarylamine can also be used for reducing the color content of highly colored liquids. Compositions containing the polyarylamine are also described.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: September 30, 2003
    Assignee: Polymer Ventures, Inc.
    Inventors: Robert P. Mahoney, Christopher B. Murphy, Michael Dugan
  • Publication number: 20030094099
    Abstract: A method and apparatus for treating an exhaust gas containing volatile organic compounds. The method includes the steps of: introducing an exhaust gas into a wet scrubber, so that the organic pollutants in the exhaust gas are absorbed by a scrubbing water; pumping the scrubbing water containing the organic pollutants into at least one oxidation tank, thereby causing oxidation reaction between the organic pollutants and an oxidizing agents containing ozone; and introducing the scrubbing water after the oxidation reaction into the wet scrubber. The oxidizing agent further comprises hydrogen peroxide.
    Type: Application
    Filed: July 19, 2002
    Publication date: May 22, 2003
    Inventors: Shu-Sung Lin, Hsin-Hsien Wu, Ching-Chih Lai
  • Patent number: 6409802
    Abstract: A method for preventing scale formation in a wet type exhaust gas treating apparatus is disclosed. An exhaust gas is contacted with a washing liquid containing water. The washing liquid contains at least one chelating agent which reacts with ions becoming a cause of scale formation to form a water-soluble chelate compound.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: June 25, 2002
    Assignee: Ebara Corporation
    Inventor: Takashi Kyotani
  • Patent number: 6228269
    Abstract: Wastewater streams containing tacky or sticky components and heavy metals, such as photoresist-containing streams from printed-circuit board manufacture and water streams from paint spraying processes, can be detackified and the metals simultaneously removed by addition of a metal salt, such as an iron salt, and a sulfide material. The combination of metal salts and sulfide reacting products produces a detackified metal sulfide sludge that improves the filterability of the wastewater while also removing dissolved metal ions from the wastewater.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: May 8, 2001
    Inventor: Steven Cort
  • Patent number: 6162284
    Abstract: The invention relates to an apparatus and method for use in well drilling, for separating rock cuttings, gas, water, drilling mud, gases, or foam which may be part of the drilling fluid returning from a bore hole. The apparatus has a plurality of compartments through which the drilling fluid flows. The first compartment makes use of a degasser to extract gases from the fluid, as well as break down foam. Subsequent chambers involve the use of shale shakers, centrifuges, and flocculants to aid in the separation of liquids from solids. The invention also employs a deduster unit which eliminates the spread of dust common in air drilling operations. Through the use of these various devices, the invention eliminates the need for venting the drilling fluid to the environment surrounding the well site.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: December 19, 2000
    Assignee: Dailey Canada Limited
    Inventors: Bryce Mitchell, David Gladue, Keith Corb
  • Patent number: 6136220
    Abstract: Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, nonionic surfactant and amphoteric surfactant is used in conjunction with a silicate compound to treat the paint spray booth waters.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: October 24, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Howard B. Agree, Barry P. Gunagan, Edward A. Rodzewich
  • Patent number: 5985154
    Abstract: Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, nonionic surfactant and amphoteric surfactant is used in conjunction with a silicate compound to treat the paint spray booth waters.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: November 16, 1999
    Assignee: Betz Dearborn Inc.
    Inventors: Howard B. Agree, Barry P. Gunagan, Edward A. Rodzewich
  • Patent number: 5897689
    Abstract: A method and apparatus are provided for binding emulsified resin and tar substances in circulating water of a wet-cleaning and wet precipitation system for waste gas produced in the wood industry. Wood dust is metered into the circulating water and receives the emulsified substances adsorptively. The wood dust is removed from the water circulation path and sedimented.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: April 27, 1999
    Assignee: BWT Aktiengesellschaft
    Inventor: Emil Wieser-Linhart
  • Patent number: 5893943
    Abstract: The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting a composition containing an adhesive with the gas stream; collecting the undesired particles and adhesive on a collection surface to form an aggregate comprising the adhesive and undesired particles on the collection surface; and removing the agglomerate from the collection zone. The composition may then be atomized and injected into the gas stream. The composition may include a liquid that vaporizes in the gas stream. After the liquid vaporizes, adhesive particles are entrained in the gas stream. The process may be applied to electrostatic precipitators and filtration systems to improve undesired particle collection efficiency.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: April 13, 1999
    Assignee: ADA Environmental Solutions, LLC
    Inventors: Michael Dean Durham, Richard John Schlager, Timothy George Ebner, Robin Michele Stewart, Cynthia Jean Bustard
  • Patent number: 5614102
    Abstract: A sewage purification method which includes a first step in which at least two kinds of flocculants are introduced in sewage for stirring and mixing therewith so as to float and settle inorganic and organic materials. The first step is sequentially repeated more than one time. Next, at least three kinds of flocculants are introduced into the supernatant obtained in the first step for stirring and mixing therewith so as to further float and settle remaining inorganic and organic materials. At least one of the first and second steps is sequentially repeated more than one time. In the above way, middle water, drinking water and super-pure water can be obtained from sewage. Purification of exhaust gas is also possible by introducing such exhaust gas in one of the above steps.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 25, 1997
    Inventor: Yasuyuki Sakurada
  • Patent number: 5562833
    Abstract: In a paint spray booth wherein water is used to collect oversprayed paint, a process is disclosed for detackifying and coagulating oversprayed paint by the independent and concurrent addition of specific amounts of specific anions and cationic polymers to the water system.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: October 8, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Howard B. Agree, Robert A. Iezzi
  • Patent number: 5547587
    Abstract: The invention is an improved process for denaturing and coagulating paint in an aqueous medium in which denatured and coagulated paint must remain in a dispersion in the aqueous medium. The aqueous medium contains a coagulant and the aqueous medium is maintained at an alkaline earth metal ion equivalent of less than 1.0 mmole/liter.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: August 20, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Thomas Molz, Hans-Joergen Rehm, Toni Vogt, Juergen Geke
  • Patent number: 5407647
    Abstract: A gas-scrubber apparatus, including a chamber having an inlet means for receiving polluted gases to be scrubbed and having outlet means through which scrubbed gases are discharged, and heating elements for heating the chamber to maintain the polluted gases at predetermined temperature levels between the inlet means and the outlet means. The chamber includes a reaction zone for receiving a mixture of solid scrubbant materials for reacting with the polluted gases and a gas blower for directing the polluted gases to travel through the chamber to react with the scrubbant materials. At least one scrubber assembly is mounted in the reaction zone of the chamber having a baffle for collecting the polluted gases in the area adjacent the wall of the chamber.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: April 18, 1995
    Assignee: Florida Scientific Laboratories Inc.
    Inventor: Gregorio Tarancon
  • Patent number: 5352366
    Abstract: To purify smoke from a liquid fuel (in particular heavy fuel oil) boiler by eliminating unwanted components including acids, the smoke, before it is exhausted to the atmosphere, is caused to pass along a vertical path in a heat exchanger adapted to recover the latent heat of condensible components together with the substantive heat of the smoke. Water is sprayed at the top of the vertical path and collected at the bottom in the form of an effluent comprising the water, condensates and soot. A reserve water supply is provided. Water is fed from this reserve supply to the top of the heat exchanger where it is sprayed after adding to it an alkaline solution in sufficient quantity to neutralize acid components of the smoke. The effluent is recovered at the bottom of the heat exchanger. An effective dose of a floculating agent is added to it. The effluent is fed into a settling tank where is separates into a soot sludge and a clarified effluent which is fed to the reserve water supply.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: October 4, 1994
    Assignee: AQUAFRANCE
    Inventors: Yves Courtaud, Claude Caveriviere