Including Temperature Change Patents (Class 210/766)
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Publication number: 20080237131Abstract: The present invention relates to methods and systems for purifying gases, such as for example semiconductor process gases. The invention more particularly relates to fluid purification methods and systems having improved heat transfer capabilities and controls such that the purified fluid produced from the process contains reduced impurity levels and/or exhibits more uniform concentrations within the final product. In another aspect of the invention, the activation time for adsorbent beds used in such processes and systems can be reduced.Type: ApplicationFiled: March 29, 2007Publication date: October 2, 2008Inventors: Lloyd Anthony Brown, Thomas Justin Thompson
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Publication number: 20080230487Abstract: A novel chemical process has been developed for the first time for the disposal of greases and manufacture of industrial fuels therefrom. Details of the method for disposing by the new chemical approach have been described. The “degrading agent” used in this method ruptures soap matrices and helps the separation of soap and base oil. The solution derived from the research work is waste-to-energy process and can be used as cost effective fuel for industrial purpose.Type: ApplicationFiled: March 20, 2007Publication date: September 25, 2008Inventor: Saurabh Malhotra
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Publication number: 20080217262Abstract: Nozzle device and nozzle for atomization and/or filtration as well as methods for using the same. The nozzle and nozzle device for atomization, in particular a micro-machined reinforced nozzle plate, may produce small liquid droplets in air (spray) or into a liquid (emulsion) with a narrow droplet size distribution and make small air bubbles into a liquid (foam). A nozzle part for filtration as well as elements and methods to facilitate atomization and filtration are also disclosed.Type: ApplicationFiled: March 5, 2008Publication date: September 11, 2008Applicant: AQUAMARIJN HOLDING B.V.Inventor: Cornelis Johannes Maria Van Rijn
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Publication number: 20080185348Abstract: A method of treating an aqueous cyanide- and/or complexing-agent-containing solution, including high-temperature treating the solution in a closed reaction vessel, discharging at least a portion of the treated solution from the reaction vessel, at least partially replacing the discharged fraction with untreated solution, and subjecting the untreated solution to high-temperature treatment along with a treated-solution fraction remaining in the reaction vessel.Type: ApplicationFiled: December 17, 2007Publication date: August 7, 2008Applicant: Wieland Dental + Technik GmbH & Co. KG, a corporation of GermanyInventors: Gerhard Gutekunst, Waldemar Mzyk
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Patent number: 7387736Abstract: A method and apparatus for implementing pathogen reduction within a poultry processing or food processing plant that uses water that has been treated with chloramines at an advantageous dosagebefore being introduced to the production process at processing steps. The water treated with chloramines may be from a fresh water source or reclaimed water from the processing plant. The reintroduction of the treated reclaimed water advantageously causes a dramatic reduction in the levels of microorganisms associated with poultry processing, while substantially conserving water use.Type: GrantFiled: July 11, 2003Date of Patent: June 17, 2008Assignee: Zentox CorporationInventors: Joe D. Phillips, Robert P. Kim, Stephen P. Axtell, Sam M. Jaffe
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Method of processing liquid organic waste to solid fuel; greenhouse gas purification and oxidization
Publication number: 20080053915Abstract: A method of processing liquid organic waste, whereas sludge liquid is separated from sludge solid. The sludge solid is pasteurized and pumped into the formation unit. The heat gases (heart, emission, air pressure, ash, dust, and etcetera) force sludge solid to move more than one direction creating ocean waves look alike and the liquid substance in sludge solid is steamed out of the unit to designate location and the dried substance becomes an energy fuel product equivalent to coal.Type: ApplicationFiled: September 11, 2006Publication date: March 6, 2008Inventor: Caius Emeka Egbufoama -
Patent number: 7303770Abstract: Vegetable sources of cancer chemoprotective agents have been identified which are extraordinarily rich in glucosinolates, metabolic precursors of isothiocyanates. The vegetable sources are used to provide a dietary means of reducing the level of carcinogens in mammals.Type: GrantFiled: April 5, 2001Date of Patent: December 4, 2007Assignee: Johns Hopkins School of MedicineInventors: Jed W. Fahey, Paul Talalay
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Patent number: 7258801Abstract: A system and method are provided for reducing DI water consumption by delivering the DI water at an elevated processing temperature when demanded. The DI water is passed through a heater for heating the DI water to a processing temperature in a single pass. The DI water is circulated through a recirculation loop, including the heater, until demanded. The DI water is monitored for contaminants and bubbles or voids. Detected contaminants or voids are discharged through vents of the system. Turbulence or biocides can be introduced into the recirculated DI water for inhibiting biological contamination.Type: GrantFiled: September 13, 2004Date of Patent: August 21, 2007Assignee: Heatflex CorporationInventors: Jorge Ramirez, Hector Joel Castaneda, Jose Luis Tlaxca
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Patent number: 7063795Abstract: A method for starting up a system for oxidating organic bodies. The system includes a tubular body wherein an aqueous body is injected into the inlet thereof at a pressure P1 the tubular body having a first zone extending the inlet thereof, a second zone into which an oxidating compound can be injected into the output thereof. The inventive method includes the following steps: a first amount of thermal energy Q1 is provided in the first zone, the amount of thermal energy being able to raise the temperature of the liquid flowing through the tubular body from an initial temperature to a higher temperature T1; and a determined amount of a combustible mixture which can react at the intermediate temperature T1 in order to provide an amount of thermal energy Q2 bringing the temperature of the liquid to a reaction temperature T2 is injected.Type: GrantFiled: July 10, 2002Date of Patent: June 20, 2006Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)Inventors: François Cansell, Manuel Bottreau
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Patent number: 7022242Abstract: Use and reduction of wastewater or “pond water” created by the wet-process phosphoric acid manufacturing there is created a large amount of wastewater or “pond water” to substantially reduce or eliminate the discharge of pond water with contaminants to the environment. By partially treating pond water with known industry standard processes and using the treated pond water for use as required makeup or cooling water in an electric power generator or any other Industry requiring makeup, cooling or process water will substantially reduce or eliminate the need for the phosphoric acid manufacturers to discharge the contaminated water to the environment and reduce the quantity of fresh water that would normally be required by these other industries using the treated pond water for cooling or makeup water.Type: GrantFiled: April 14, 2003Date of Patent: April 4, 2006Inventor: Richard Edwin Sacchi
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Patent number: 6986848Abstract: A method for purifying nucleic acids or proteins comprising a plurality of piston pumps; and a plurality of nozzles capable of having a plurality of disposable tips which are automatically attachable/detachable. The apparatus includes a mechanism for mixing a liquid mixture of each sample and a reagent in a plurality of sections of a container by sucking up a plurality of the mixtures into tips, followed by discharging the mixtures in the sections simultaneously. The apparatus also includes a mechanism for dispensing a desired amount of a reagent to be used subsequently into the same number of sections of a different container as samples, while the mixing is in progress.Type: GrantFiled: September 6, 2002Date of Patent: January 17, 2006Assignee: Toyo Boseki Kabushiki KaishaInventors: Katsunori Ikeda, Yoshiaki Nishiya, Masahiro Kusumoto, Masahiro Suzuki, Yoshihisa Kawamura
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Patent number: 6942779Abstract: The present invention provides a system and method for selectively removing one or more organic and inorganic and also preferably one or more inorganic contaminants from plating baths. More particularly, the invented method relates to the use of a source of energy in combination with chemical oxidants, alone or in conjunction with a catalyst to oxidize organic contaminants in the plating bath to a level such that the electroplating bath can be recovered and reused after appropriate chemical adjustment. The oxidative treatment method may be a continuous process or a batch process that is performed in a single pass. Residual organics, if desired and chloride ions in the bath are removed from the solution by a chemisorption or physisorption treatment. Inorganic contaminants are removed from the electroplating bath by selective ion exchange resins or electrodialysis, while particulate and suspended colloidal particles are removed by filtration before the treated plating bath is recycled.Type: GrantFiled: May 2, 2002Date of Patent: September 13, 2005Assignee: Mykrolis CorporationInventors: Brett Matthew Belongia, Zhen Wu Lin, John E. Pillion, Jieh-Hwa Shyu
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Patent number: 6919027Abstract: An improved process of treating sludge to provide a stable product for use as a beneficial soil or fertilizer for agricultural lands which includes the steps of: (a) mixing sludge with at least one alkaline material in an amount sufficient to raise pH of the mixture to a level of at least 12 and to increase percent solids in the mixture to at least 40% by weight, and such that odorant sludge organics and inorganics are bound to adsorbent particles of the alkaline material, (b) aerating and drying the mixture by agitation and heating to stabilize the mixture and increase the percent solids to at least 50% by weight, and (c) pasteurizing the dried mixture at a temperature at or above 52.degree. C.Type: GrantFiled: October 16, 2003Date of Patent: July 19, 2005Assignee: N-Viro Systems Canada, Inc.Inventors: Rae E. Wallin, Grant H. Mills
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Patent number: 6913700Abstract: A method of and an arrangement for continuous hydrolysis of organic material in the form of sludge with a dry solids content of 1-20%. A sludge containing the organic material with a low content of abrasive components and a dry solids content of 1-20% is heated to a temperature of approximately 100° C. The sludge is mixed with steam at a pressure of 1-4 bars. The sludge/steam mixture is lead to a preheating tank. The pressure of the sludge/steam mixture is increased from 3 to 10 bars. The sludge-steam mixture is lead to a reactor. A depressurizing tank depressurizes the sludge/steam mixture to 1-4 bars. The sludge and steam are separated and may be cooled.Type: GrantFiled: March 9, 2004Date of Patent: July 5, 2005Assignee: Cambi ASInventor: Odd Egil Solheim
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Patent number: 6863865Abstract: A method of sterilizing a pharmaceutical composition containing a suspension of a pharmaceutical comprises rapidly heating the pharmaceutical composition from ambient temperature to an elevated temperature, maintaining it at or above the elevated temperature for a period of time, and rapidly cooling the pharmaceutical composition to ambient temperature.Type: GrantFiled: September 30, 2002Date of Patent: March 8, 2005Assignee: Breath LimitedInventors: Ian G. C. McAffer, Kailash S. Purohit
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Patent number: 6858179Abstract: By treating potable water at a temperature of at least 230° C. (446° F.) and at a pressure at least equal to the pressure of saturated steam at said temperature, can produce pyrogen-free water using treatment times of 0.05 to 5 seconds or less. The addition of an oxidant, in the form of a gas, a liquid, or a solid, further decreases the required treatment time to less than 0.05 second. The reduction n equipment size achieved with this rapid treatment time allows the utilization of treatment units small enough to be easily transported to remote locations or installed in the restricted space environment existing in ships and submarines.Type: GrantFiled: March 3, 2003Date of Patent: February 22, 2005Assignee: Applied Research Associates, Inc.Inventors: Lixiong Li, Jean J. Renard
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Patent number: 6833076Abstract: A method for the treatment of waste water by the generation of radicals in the waste water comprises applying to the waste water at least one substance which is capable of providing radicals in the waste water. The substance decomposes by a unimolecular mechanism or by hydrogen abstraction to form a carbon-containing radical on exposure to light or heat.Type: GrantFiled: August 29, 2002Date of Patent: December 21, 2004Assignee: Unilever Home & Personal Care USA, a division of Conopco, Inc.Inventors: Stephen Norman Batchelor, Denise Angela Carr, Robert John Crawford, Lynette Fairclough
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Patent number: 6824694Abstract: The present invention relates to a method and system for treating waste materials, such as wastewater treatment plant biosolids or process wastes, by application of energy waves. In one embodiment, waste materials are treated by adding and blending an alkaline material to the waste material, and applying energy waves, such as microwaves or radio frequency waves, thereby significantly reducing pathogenic microorganisms in the waste material to meet the requirements of 40 C.F.R. 503 (2002) for producing a Class “A” product for beneficial use.Type: GrantFiled: November 4, 2002Date of Patent: November 30, 2004Assignee: Chemco Systems L.P.Inventor: Andrew J. Kicinski
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Patent number: 6808639Abstract: The present invention relates to a method and apparatus for reducing the amount of hydrogen sulfide in the effluent of a water heater. A water heater of the present invention comprises an aeration device comprising a pump connected to a tube connected to an air sparging unit. The water heater may further comprise a programmable thermostat capable of controlling the temperature of the water in the water heater. The method of the present invention comprises the step of periodically or constantly passing a plurality of air bubbles through the water contained in a water heater. The method may further comprise the step of heating the water in the water heater.Type: GrantFiled: December 11, 2002Date of Patent: October 26, 2004Assignee: General Electric CompanyInventors: James Rulon Young Rawson, Richard Leland Butsch
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Patent number: 6808638Abstract: A method and system (10) for selectively removing one component of a material thereby concentrating other components of the material are disclosed. The material is cooled to below the melting temperature of the material to form a supercooled liquid phase with heat transfer plate with cooling channels (20). Ultrasonic energy from ultrasonic drivers (42) is applied to the material to form solid phase crystals of the component to be removed. These crystals are removed to leave the concentrated products. The ultrasonic energy prevents the growth of dendrites on the crystals, resulting in the formation and removal of small crystals of the component to be removed without damage to or removal of the remaining components. Methods and apparatuses for cryoprecipilation and chromatography are also disclosed.Type: GrantFiled: June 25, 2001Date of Patent: October 26, 2004Assignee: Throwleigh Technologies, L.L.C.Inventor: Howard E. Purdum
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Patent number: 6796436Abstract: Water treatment systems or assemblies are normally tested after construction, at least for leaks, prior to shipping or storage. Pressure testing with a gas is hazardous, so testing with water is a standard method. After testing, the water is displaced from the system by draining or gas phase flushing. It is nearly impossible to remove all of the water from the system or assembly. This remaining water provides an environment for biological growth which contaminates the system or assembly over time. The purpose of this invention is to eliminate or minimize this biological contamination by adding a biocidal agent to the system or assembly before sealing it for shipment or storage.Type: GrantFiled: July 24, 2002Date of Patent: September 28, 2004Assignee: Ionics, IncorporatedInventors: William W. Carson, Keith J. Sims, Bernard Mack, Robert J. Ritz, William C. Whitehill
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Patent number: 6776958Abstract: A device for treating a liquid effluent such as pig slurry containing significant quantities of nitrogen and phosphorus, the device including a mixing reactor for contacting the liquid effluent with the basic reagent, provided with an intake for said effluent and another intake for the basic reagent; an ammonia-extracting reactor, connected to the mixing reactor, and a tank for storing the treated liquid effluent derived from the ammonia-extracting reactor.Type: GrantFiled: June 2, 2000Date of Patent: August 17, 2004Assignee: FibacInventor: Claude Joly
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Patent number: 6761828Abstract: Nitrate-containing (contaminated) solutions are reduced with SO2 gas in the presence of an at least equimolar amount of NH4+ or ammonium salt.Type: GrantFiled: March 13, 2002Date of Patent: July 13, 2004Assignee: Bayer AktiengesellschaftInventors: Jürgen Heuser, Werner Verhoeven, Domien Sluyts, Gabriel Denecker
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Publication number: 20040084380Abstract: The present invention relates to a method and system for treating waste materials, such as wastewater treatment plant biosolids or process wastes, by application of energy waves. In one embodiment, waste materials are treated by adding and blending an alkaline material to the waste material, and applying energy waves, such as microwaves or radio frequency waves, thereby significantly reducing pathogenic microorganisms in the waste material to meet the requirements of 40 C.F.R. 503 (2002) for producing a Class “A” product for beneficial use.Type: ApplicationFiled: November 4, 2002Publication date: May 6, 2004Inventor: Andrew J. Kicinski
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Publication number: 20040074848Abstract: The present invention provides a process for the removal of hydrogen peroxide from spent pickle liquor used in a steel strip pickling process. The process utilizes an enclosed decomposition tank which includes a pickle liquor inlet pipe, an outlet pipe, at least one vent pipe, an internal baffle, and a heat source.Type: ApplicationFiled: October 10, 2003Publication date: April 22, 2004Applicant: AK Steel CorporationInventors: Vijay N. Madi, Jerald W. Leeker
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Publication number: 20040031754Abstract: A process for producing a mixture of particulates using compressed gas and sonication. The process is particularly useful to mix reactive particulates, such as thermites.Type: ApplicationFiled: August 13, 2002Publication date: February 19, 2004Inventors: David Richard Pesiri, Robert C. Dye
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Patent number: 6673247Abstract: A process for dewatering and reducing pathogens in liquid waste sludge having a liquid component and a sludge solids component. Alkaline material is added to the liquid waste sludge. Flocculent may then be mixed with the liquid waste sludge. The liquid waste sludge is then fed into a screw press having a screw. The screw simultaneously heats and dewaters the liquid waste sludge for a sufficient period of time and at a predetermined temperature for the sludge solids component from the screw press to be pasteurized. An apparatus is also provided for carrying out the process for dewatering and reducing pathogens in liquid waste sludge.Type: GrantFiled: August 3, 2001Date of Patent: January 6, 2004Assignee: FKC Co., Ltd.Inventor: Roger J. Olson
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Patent number: 6623650Abstract: There is disclosed a process for treating sewage or similar organic sludge to produce a pasteurized and dried product comprising the steps of: drying the sludge to substantially the desired dry solids content of the product; and thereafter adding an alkaline admixture to the dried sludge in order to pasteurize and/or stabilize the sludge and thereby produce the product without employing subsequent drying by aeration.Type: GrantFiled: October 16, 2001Date of Patent: September 23, 2003Assignee: R3 Management LimitedInventor: Robin Millard
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Patent number: 6596160Abstract: A periodic ozone treatment system for a showering tower type water cooling system worked once daily for a period of 10˜30 minutes essentially comprises: an ozone dissolving tank to prepare high density ozone solution therein and periodically fed to the cooling system from a top of the showering tower automatically; a bypass piping connected from a heated water recycling pipe after a heat exchanging in a main functional heat exchanger to a sand filter to shift recycling water for washing the sand in the filter by a reverse osmosis operation during the period while the ozone treatment system is working; and an ozone decomposition reactor disposed at a front of heat exchanger free from corrosion.Type: GrantFiled: November 27, 2001Date of Patent: July 22, 2003Inventor: Minshiou Lee
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Patent number: 6576145Abstract: Method and apparatus for treating a mixture of mineral substrate particles and hydrocarbon compounds, especially tar sands and contaminated soils, to recover a hydrocarbon portion and a cleaned substrate portion. In a preferably continuous process, hydrocarbonaceous rock, sand, ore, or soil containing bitumen, petroleum, and/or kerogen is crushed or otherwise comminuted as needed to the particle size of sand or smaller. The comminuted ore is mixed with water to form a slurry, is heated to between 60° C. and 100° C., and is blended with an oxidant in aqueous solution, preferably hydrogen peroxide. Both free interstitial hydrocarbons and those hydrocarbons bound electrostatically to the surfaces of clay-like particles in the ore are released from the mineral substrate.Type: GrantFiled: June 18, 2001Date of Patent: June 10, 2003Assignee: Continuum Environmental, LLCInventors: Lawrence M. Conaway, Roger Noble, Michael Keller, David Caffey
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Patent number: 6555055Abstract: A system having a fluid source and a pasteurizer coupled with a disinfectant unit in flow communication with the fluid source for use in disinfecting dental or other water lines. The combination of pasteurizer and disinfectant unit is adapted to receive water from the fluid source. A fluid delivery unit is provided in flow communication with the pasteurizer and disinfectant unit combination. The disinfectant unit has a means for supplying hydrogen and oxygen and a means for generating hydrogen peroxide in flow communication with the means for supplying hydrogen and oxygen.Type: GrantFiled: July 30, 1999Date of Patent: April 29, 2003Assignee: Lynntech, Inc.Inventors: Alan J. Cisar, Adrain Denvir, G. Duncan Hitchens, Thomas D. Rogers
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Patent number: 6548681Abstract: A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. The process uses a distillation in a column (11) of a cyclic acetal from an aqueous solution which acetal is formed in a reaction mixture of the polyol and an aldehyde or ketone. The polyols, such as ethylene glycol and propylene glycol, are staple articles of commerce with many uses.Type: GrantFiled: June 26, 2001Date of Patent: April 15, 2003Assignee: Board of Trustees of Michigan State UniversityInventors: Shubham P. Chopade, Atulkumar D. Dhale, Christopher W. Kiesling, Angela M. Clark, James E. Jackson, Dennis J. Miller
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Patent number: 6531034Abstract: Methods and apparatus for desalination of salt water (and purification of polluted water) are disclosed. Salt (or otherwise polluted) water is pumped to a desalination installation and down to the base of a desalination fractionation column, where it is mixed with hydrate-forming gas to form either positively buoyant or negatively buoyant (assisted buoyancy) hydrate. The hydrate rises or is carried upward and dissociates (melts) into the gas and pure water. In preferred embodiments, residual salt water which is heated by heat given off during formation of the hydrate is removed from the system to create a bias towards overall cooling as the hydrate dissociates endothermically at shallower depths. In preferred embodiments, the input water is passed through regions of dissociation in heat-exchanging relationship therewith so as to be cooled sufficiently for hydrate to form at pressure-depth.Type: GrantFiled: August 17, 1999Date of Patent: March 11, 2003Assignee: Marine Desalination Sys6tems, L.L.P.Inventor: Michael D. Max
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Patent number: 6497794Abstract: Methods and apparatus for desalination of salt water (and purification of polluted water) are disclosed. Saline (or otherwise polluted) water is pumped to a desalination installation and down to the base of a desalination fractionation column, where it is mixed with hydrate-forming gas or liquid to form either positively buoyant (also assisted buoyancy) or negatively buoyant hydrate. The hydrate rises or sinks or is carried into a lower pressure area and dissociates (melts) into the gas and pure water. In preferred embodiments, residual salt water which is heated by heat given off during formation of the hydrate is removed from the system to create a bias towards overall cooling as the hydrate dissociates endothermically at shallower depths, and input water is passed through regions of dissociation in heat-exchanging relationship therewith so as to be cooled sufficiently for hydrate to form at pressure-depth.Type: GrantFiled: September 17, 1999Date of Patent: December 24, 2002Assignee: Marine Desalination Systems L.L.C.Inventor: Michael David Max
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Publication number: 20020185456Abstract: A method for reducing sludge viscosity of a sewage sludge having a solids concentration of at least 10% (w/w). The method comprises the steps of increasing the pH of the sludge to 9.5-12.5%, at least one step selected from subjecting the sludge to a holding step of at least one day and adding inorganic or organic chemicals to facilitate viscosity reduction, followed by incubating the sludge at temperature up to 100° C., and subjecting the sludge to a shearing or disintegration step. The method provides sludge, especially concentrated sludge, that is more readily pumped or transported.Type: ApplicationFiled: May 31, 2001Publication date: December 12, 2002Inventors: Owen P. Ward, Henry Burd
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Patent number: 6491829Abstract: For conversion of harmful compound in contaminated liquid into harmless compound by use of reactant, a plurality of agitators are arranged in a vertical superposition within a closed agitation chamber and, after the contaminated liquid is charged into the agitation chamber, the agitators are driven for rotation at a high speed in a rage from 10,000 to 18,000 rpm in order to create a field of super critical conditions in which free radicals are liberated from the harmful compound and coupled by the reactant. Neither high temperature heating nor high level pressurization is needed for processing of the contaminated liquid.Type: GrantFiled: December 8, 2000Date of Patent: December 10, 2002Inventors: Akira Suzuki, Takashi Nishimoto
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Publication number: 20020175129Abstract: The present invention provides a process for the removal of hydrogen peroxide from spent pickle liquor used in a steel strip pickling process. The process utilizes an enclosed decomposition tank which includes a pickle liquor inlet pipe, an outlet pipe, at least one vent pipe, an internal baffle, and a heat source.Type: ApplicationFiled: April 9, 2002Publication date: November 28, 2002Inventors: Vijay N. Madi, Jerald W. Leeker
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Patent number: 6444130Abstract: The invention is a process for treating waste slurry generated in the electric furnace production of phosphorus in which a superatmospheric reactor is operated at an elevated temperature to destroy cyanides, phosphorus, and phosphides present in the waste. The process transforms wastes from the phosphorus electric furnace process into non-hazardous solid, liquid, and gaseous wastes that meet environmental regulatory requirements regarding solids for phosphorous, cyanide, phosphine and cyanide flux, and TCLP metals, and regarding the filtrate for UTS metals.Type: GrantFiled: October 30, 2000Date of Patent: September 3, 2002Assignee: FMC Properties,LLC.Inventors: James L. Manganaro, Henry A. Pfeffer, Jay R. Brummer, Bert D. McMunn, Christopher M. Knapp, William M. Copa
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Patent number: 6419831Abstract: Ozone is generated and combined with water. The combined water and ozone are then mixed to provide a substantially homogeneous mixture which subsequently is transported along a confined flow path having a length sufficient to provide substantially complete decomposition of the ozone.Type: GrantFiled: July 17, 2001Date of Patent: July 16, 2002Assignee: Ozonaid International, Inc.Inventor: Desheng Wang
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Patent number: 6402966Abstract: In a method for processing a biologically hardly degradable waste water including benzene ring materials, the waste water is oxidized by using ozone to produce oxalic acid. Then, the oxalic acid is reacted using a chemical reaction to produce oxalate. Finally, the oxalate is separated out from the waste water.Type: GrantFiled: November 9, 2000Date of Patent: June 11, 2002Assignee: NEC CorporationInventor: Tsutomu Taira
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Patent number: 6387281Abstract: There is disclosed a process for treating sewage or similar organic sludge to produce a pasteurized and dried product comprising the steps of: dividing the sludge into at least one first portion and at least one second portion; drying the first portion so that the first portion has a higher dry solids content than that of the second portion; mixing the fist portion and the second portion to produce a mixture having a dry solids content which is intermediate between that of the first and second portions; adding an alkaline admixture to the mixture in order to pasteurize the mixture and thereby produce the product without employing subsequent drying by aeration.Type: GrantFiled: March 23, 2001Date of Patent: May 14, 2002Assignee: R3 Management LimitedInventors: Robin Millard, Frederick H. Kurtz
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Patent number: 6383400Abstract: The present invention relates to a process to reduce the nitrate and/or nitric acid concentration of an aqueous solution—referred to as a denitration process—by means of a reaction with formic acid or formol wherein said reaction is carried out in heterogeneous catalysis. The solutions treated may for example be produced by processes related to nuclear fuel cycles such as the nitric acid solutions used in the treatment of radioactive waste or explosive substance manufacturing processes or surface treatment processes.Type: GrantFiled: January 22, 2001Date of Patent: May 7, 2002Assignees: Commissariat a l'Energie Atomique, Compagnie Generale des Matieres NucleairesInventors: Jean-Charles Broudic, Philippe Brossard, Alekseï Ananiev
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Patent number: 6355179Abstract: Decomposition of excess hydroxylamine is accomplished by bringing a hydroxylamine-containing wastewater stream into contact with hydrogen peroxide. Most preferably, the wastewater stream is at neutral pH (e.g., pH between 7-8) and at elevated temperature (e.g., at least about 90° C.) when brought into contact with hydrogen peroxide. The presence of ammonium ion (NH+) accelerates the decomposition of hydroxylamine in the wastewater stream.Type: GrantFiled: December 10, 1999Date of Patent: March 12, 2002Assignee: BASF CorporationInventor: David C. Hendrix
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Publication number: 20020020677Abstract: An integrated farm animal waste treatment system for treating solid and liquid farm animal wastes while recovering waste heat energy generated during the treatment process. The preferred embodiment includes a portable chemical treatment process that can be moved from one waste processing site to another in order to treat a variety of different types of animal waste in varying amounts on a batch basis. The preferred embodiment provides for the destruction of hazardous solids, liquids and gases. In addition, the process includes means to isolate and recover valuable by-products of farm animal waste, such as nitrogen and ammonia, for use in manufacturing commercial-grade fertilizer. The preferred embodiment also includes means for capturing waste heat for use either internally in the waste treatment process itself or, alternatively as a source of heat for the farm creating the animal wastes.Type: ApplicationFiled: July 18, 2001Publication date: February 21, 2002Inventor: Donald C. Noll
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Publication number: 20020003115Abstract: Method and apparatus for treating a mixture of mineral substrate particles and hydrocarbon compounds, especially tar sands and contaminated soils, to recover a hydrocarbon portion and a cleaned substrate portion. Hydrocarbonaceous rock, sand, ore, or soil containing bitumen, petroleum, and/or kerogen is crushed or otherwise comminuted as needed to the particle size of sand or smaller. The comminuted ore is mixed with water to form a slurry, is heated to between 60° C. and 100° C., and is blended with an oxidant in aqueous solution, preferably hydrogen peroxide. Both free interstitial hydrocarbons and those hydrocarbons bound electrostatically to the surfaces of clay-like particles in the ore are released from the mineral substrate.Type: ApplicationFiled: June 18, 2001Publication date: January 10, 2002Inventors: Lawrence M. Conaway, Roger Noble, Michael Keller, David Caffey
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Publication number: 20010023850Abstract: There is disclosed a process for treating sewage sludge or similar organic sludge in which dewatered sludge cake and an alkaline admixture are mixed and then dried under pasteurisation conditions utilising heat from the exothermic reaction with the alkali, in which drying is effected by extraction of moisture evaporated from the mixture by the exothermic heat.Type: ApplicationFiled: March 23, 2001Publication date: September 27, 2001Inventor: Robin Millard
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Patent number: 6294097Abstract: There is disclosed a method for treating waste water containing nitrate ions by subjecting the waste water to decomposition and oxidation to eliminate a harmful gas, the method including the steps of: (a) mixing a waste water containing 10 to 90% by weight nitrate ions in terms of ammonium nitrate with a lower alcohol having 1 to 4 carbon atoms to prepare a mixture, (b) decomposing the mixture at a temperature of 250° C. or higher to generate a decomposition gas, and (c) reacting the decomposition gas with a gas containing oxygen at a temperature of 250° C. or higher to render the decomposition gas harmless.Type: GrantFiled: December 10, 1999Date of Patent: September 25, 2001Assignee: Anan Kasei Co., Ltd.Inventors: Michiya Ohashi, Yoshimasa Katayama
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Patent number: 6274050Abstract: A method for treatment of halogen-containing waste material, in particular PVC-containing waste material, is disclosed. The waste material is heated in a decomposition step in a reaction zone in a substantially closed system essentially without addition of water to a temperature between 150 and 750° C., preferably 250-350° C., in the presence of a halogen-reactive compound selected from alkali and alkaline earth metal hydroxides, alkali and alkaline earth metal carbonates and mixtures thereof, so as to establish a controllable autogenous pressure substantially above atmospheric pressure, in a sufficient reaction time to convert essentially all halogen present in the waste material to alkali or alkaline earth metal halides. The closed system preferably also has a condensation zone, where water vapor and volatile compounds liberated from the waste material are condensed.Type: GrantFiled: June 12, 2000Date of Patent: August 14, 2001Assignee: NKT Research Center A/SInventor: Erik Rasmussen
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Patent number: 6258215Abstract: The system for the recovery of water from urine aboard spacecraft includes a urine intake and pretreatment unit, a unit for water reclamation from urine and a condensate purification unit. The unit for water reclamation from urine is made on the basis of a rotary multistage vacuum distiller, each stage of which is formed by at least one heat-transfer plate and comprises an evaporation zone and a condensation zone. The stages of the distiller are separated from each other by separation plates, a chamber for collecting condensate and noncondensable gases being disposed downstream of the last stage and communicated with all the condensation zones of all the stages through water seals of condensate overflow and openings for the removal of noncondensable gases in disks mounted in the condensation zones.Type: GrantFiled: July 6, 1999Date of Patent: July 10, 2001Assignee: Otkrytoe aktsionernoe obschestvo “Nauchno-Issledovatelsky I Konstruktosky Institut Kkhimicheskogo Mashinostroenia (A. O. Neikhimmash”)Inventors: Nikolai Mikhailovich Samsonov, Leonid Sergeevich Bobe, Vladimir Gustavovich Rifert, Petr Alexeevich Barabash, Vladimir Viktorovich Komolov, Vadim Iliich Margulis, Vladimir Mikhailovich Novikov, Boris Yakovlevich Pinsky, Nikolai Nikolaevich Protasov, Valentin Vasilievich Rakov, Nikolai Sergeevich Farafonov
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Patent number: 6251290Abstract: A method for treating hydrocarbonaceous deposits to recover a petroleum-like hydrocarbon portion and a cleaned particulate substrate portion. Hydrocarbonaceous ore containing bitumen and/or kerogen is crushed or otherwise comminuted to the particle size of sand or smaller. The comminuted ore is mixed with water to form a slurry, is heated to between 60° C. and 100° C., and is blended with an oxidant in aqueous solution, preferably hydrogen peroxide. Both free interstitial hydrocarbons and those hydrocarbons bound electrostatically to the surfaces of clay-like particles in the ore are released from the rock substrate in a putative electrophysical reaction in the presence of the oxidant. Some of the released bitumenous and kerogenic compounds are then controllably cleaved by the oxidant in a limited Fenton's reaction to yield organic compounds having lower average molecular weights which are suitable for refining as oil after separation from the process water phase and the residual rock substrate.Type: GrantFiled: November 30, 1999Date of Patent: June 26, 2001Assignee: Continuum Environmental, Inc.Inventor: Lawrence M. Conaway