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| Number | Title | Issue Date |
| 7998309 | One-step method for the production of nanofluids A one step method and system for producing nanofluids by a nanoparticle-source evaporation and deposition of the evaporant into a base fluid. The base fluid such oil or ethylene glycol is placed in a rotating cylindrical drum having an adjustable heater-boat-evapora... | 08/16/2011 |
| 7722740 | Method for obtaining a gaseous phase from a liquid medium and device for carrying out the same A modular construction micro-reactor with parallel microchannels on fluid guide plates for chemical reactions, but not for evaporation purposes is known. A modular construction falling film evaporator is disclosed, comprising a stack of alternate gap-like evaporatio... | 05/25/2010 |
| 7718033 | One-step method for the production of nanofluids A one step method and system for producing nanofluids by a particle-source evaporation and deposition of the evaporant into a base fluid. The base fluid such (i.e. ethylene glycol) is placed in a rotating cylindrical drum having an adjustable heater-boat-evaporator ... | 05/18/2010 |
| 7670456 | Method and device for treating water In a multi-effect falling-film evaporator, purified water for special purposes is produced. In each effect, a steam phase and a water phase is produced from the feed water. The steam phase is used for heating in the subsequent effect, whereby it condenses to product... | 03/02/2010 |
| 7611604 | Method and device for the production of purified steam The invention relates to a method and a device for the production of pure steam. A falling-film evaporator is used. Of the water-steam mixture leaving the evaporator unit, part of the water is collected at the bottom of the device, and a fraction mainly consisting o... | 11/03/2009 |
| 7410556 | Purification of aqueous solutions of organic acids The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/1 or less, preferably 250 g car... | 08/12/2008 |
| 7332139 | Process and device for carrying out reactions in reactor with slot-shaped reaction spaces Reactions between at least two fluid reactants are performed in a reactor comprising wall elements (1), slot-shaped reaction spaces (3) and cavities (5) for conducting a fluid heat-carrier through. Depending on the process and throughput, a modu... | 02/19/2008 |
| 7332085 | Method for the purification of an α-hydroxy acid on an industrial scale The present invention relates to a method for the purification of an α-hydroxy acid on an industrial scale, in which the method involves: (a) subjecting an aqueous stream containing mainly α-hydroxy (1) to an extraction step, with the formation of an aqueous place... | 02/19/2008 |
| 7316781 | Pseudo-distillation method for purifying a dry cleaning solvent Pseudo-distillation, steady-state method for purifying dry cleaning solvents containing laundry soils and other contaminants. ... | 01/08/2008 |
| 7300538 | Spinning disk evaporator Liquid organic material is controllably delivered to a receptacle located in the center of a heated surface capable of horizontally rotating about its central axis. As the heated surface rotates, material deposited within the central receptacle is forced outwardly a... | 11/27/2007 |
| 7276139 | Method for concentrating solution An low concentration dope is fed through a nozzle into a concentrating apparatus, and flash evaporation of the low concentration dope is performed at an end of the nozzle. The low concentration dope is concentrated thereby to an concentrating dope which is contained... | 10/02/2007 |
| 7272894 | Drum dryer A drum dryer provided with a liquid splash and scatter preventing equipment, which enables continuous operation by preventing a scattering liquid from making dry powder in the case in which the equipment is provided above a neighborhood of a liquid concentration sec... | 09/25/2007 |
| 7261285 | Internal inserts in cooling towers The invention concerns inserts in the moist/wet region of cooling towers, which essentially consist of plastic. An additive that prevents or considerably reduces soiling through the formation and buildup on the inserts during subsequent use is added to the plastic. | 08/28/2007 |
| 7220450 | Process for coating substrates using vapour deposition The invention relates to a process for applying a coating to a substrate wherein the coating is formed of at least two components or elements. In a preferred embodiment, the coating is formed of at least two metals. In accordance with the invention, the coating is a... | 05/22/2007 |
| 6998026 | Method for producing tertiary C-C-alkyl esters of (meth)acrylic acid A tert-C4–C8-alkyl (meth)acrylate is prepared by reacting (meth)acrylic acid with an olefin of the formula where R1 and R2, which may be i... | 02/14/2006 |
| 6933372 | Method to produce a solid form of heparin The present invention provides a new method to process a solution containing heparin; heparin salts or heparin complexes in a solvent or a mixture of solvents to a solid form of heparin products characterized by use of a drum dryer at atmospheric pressure or under v... | 08/23/2005 |
| 6926757 | Method for the concentration of spent acid The invention relates to a method for the concentration of the spent acid produced in connection with the scrubbing smelter or roaster gas. The hot gas produced is scrubbed first by dry and then by wet separation, and the scrubbed gas is conducted to the manufacture... | 08/09/2005 |
| 6911121 | Method and apparatus for simultaneous heat and mass transfer utilizing a carrier-gas The present application is directed to a continuous contacting apparatus for separating a liquid component from a liquid mixture. The apparatus comprises: (i) an evaporation chamber (15) having first and second ends, an inlet (50) and an outlet (55 | 06/28/2005 |
| 6902804 | Lyocell multifilament The present invention relates to a high tenacity, high modulus and low shrinkage lyocell multifilament yarn suitable for use in tire cords and MRG (mechanical rubber goods). The lyocell multifilament yarn is a cellulose-based fiber for industrial applications, which... | 06/07/2005 |
| 6887346 | Spinning disk evaporator Liquid organic material is controllably delivered to a receptacle located in the center of a heated surface capable of horizontally rotating about its central axis. As the heated surface rotates, material deposited within the central receptacle is forced outwardly a... | 05/03/2005 |
| 6887345 | Process and device for evaporating liquids, for example black liquor from cellulose cooking, which contain solid and dissolved substances The present invention relates to a process and a device for evaporating liquids, for example black liquor from cellulose cooking, which contain solid and dissolved substances which are to be concentrated. The liquid is heated to close to boiling temperature in a hea... | 05/03/2005 |
| 6860966 | Method for isolating polyphenylene ether polymer resins from solution A method of removing substantially all solvent from a solution containing a polyphenylene ether polymer resin with little by-product formation (less than 250 ppm) is provided. The method employs a wiped thin film evaporator with a cylindrical heating chamber operati... | 03/01/2005 |
| 6837969 | Method for the concentration of liquid mixtures A method for the concentration of liquid mixtures includes the step of causing a continuous stream of the liquid mixtures to flow in the form of a turbulent thin layer in contact with a heated wall; for that purpose, a continuous stream of liquid mixture is fed into... | 01/04/2005 |
| 6830654 | Method and device for treating water for evaporation In the production of water vapor, particularly in the production of especially clean water vapor, dissolved gases, mainly atmospheric gases, are removed from feed water (2). The feed water is sprayed by a spray nozzle (3) mounted in a hemispherical cha... | 12/14/2004 |
| 6780288 | Process for the manufacture of concentrated solutions Process for the manufacture of a concentrated solution, like a concentrated aqueous hydrogen peroxide solution, by distillation and evaporation of a dilute solution, in which the distillation and the evaporation are carried out in two distinct pieces of equipment wh... | 08/24/2004 |
| 6746567 | Microstructured surface film assembly for liquid acquisition and transport A film or tape has one of its major surfaces defined by microstructured features including a plurality of channels defined by spaced apart protrusions. The microstructured film is able to acquire liquids and to control the directional transport of such liquids for s... | 06/08/2004 |
| 6656327 | Method and device for the production of pure steam An evaporation product discharged from a lower end a falling-film evaporator enters a downpipe (7), makes a 180° turn at a bottom of the downpipe, and moves upward through an annular rising channel (9) defined between the downpipe and an intermediate hou... | 12/02/2003 |
| 6638398 | Methods for the evaporation of an aqueous solution containing ammonia A method including evaporating aqueous solutions containing ammonia, adding an acid to the evaporated vapor flow to form an ammonium salt, and condensing the vapor flow to form a liquid containing the salt. By this method the ammonia formed into a salt is... | 10/28/2003 |
| 6635150 | Method for distilling a fluid with horizontal vapor transfer into a condensation zone and modular device for implementing said method A method for distilling a fluid which is useful, for instance, in eliminating salt from brackish and/or sea water includes percolating films on plates with multiple effects having several evaporating zones and condensation zones. The evaporation zones (EV... | 10/21/2003 |
| 6627047 | Method for preventing polymerization in thin-film type evaporating device A method is provided for preventing an easily polymerizable substance from being polymerized in a thin-film type evaporating device by supplying a solution of the substance to the evaporating heating surface of the device by the centrifugal force of a sti... | 09/30/2003 |
| 6623546 | Method and installation for chemical purification of vapor in a dehydrator with mechanical vapor compression According to the invention, the vapor is taken from the condensation chamber of the dehydrator and, prior to being compressed and at a temperature substantially equal to 100° C., it is caused to pass in succession through a series of purifiers, and in ea... | 09/23/2003 |
| 6596244 | Falling film reactor with corrugated plates An arrangement for a falling film type reactor uses corrugated plates to improve the distribution and dispersion of the gaseous reactant into the liquid. Corrugated plates introduce increased turbulence for promoting better distribution and dispersion of ... | 07/22/2003 |
| 6506281 | Method for isolating polymers from solutions A process of evaporating a viscous polymer solution is described. The process includes: (a) providing a viscous polymer solution including at least 30 wt. % of solvents and monomers; (b) introducing the viscous polymer solution into a heated helix (5), th... | 01/14/2003 |
| 6340414 | Process for the recovery of perfluorinated sulphonic acids from spent acid Process for the recovery of fluorinated sulphonic acid including the step of subjecting the spent acid to heat treatment with stepwise or continuously increasing temperature, withdrawing at least two fractions during the heat treatment; and recovering the... | 01/22/2002 |
| 6336997 | Process for refining heat-deteriorative compound, contained in multi-component liquid mixture, by distillation A heat-deteriorative compound contained in a liquid mixture is refined by a distillation procedure using a distillation column in which a vapor fraction and a liquid fraction containing the heat-deteriorative compound are generated from the liquid mixture... | 01/08/2002 |
| 6309508 | Spinning disk evaporator Liquid organic material is controllably delivered to a receptacle located in the center of a heated surface capable of horizontally rotating about its central axis. As the heated surface rotates, material deposited within the central receptacle is forced ... | 10/30/2001 |
| 6258206 | Process for purifying condensate while evaporating waste liquors A process for evaporating spent liquor or other waste liquids from cellulose cooking, The evaporation is performed in a multiplicity of evaporators which are coupled in series and in which the evaporation is driven using the liquor steam. The condensates ... | 07/10/2001 |
| 6166232 | Process for producing ester quats A process is described for producing ester quats of the formula (I) ##STR1## where X- is an anion of an inorganic or organic acid, Ra is a C1 to C4 alkyl group, Rb and Rc are each, in... | 12/26/2000 |
| 6156160 | Alkylene carbonate process This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor.... | 12/05/2000 |
| 6150498 | Polymer recovery Methods for devolatilizing polymer solutions have been invented which include, in certain aspects, dissolving a viscous polymer in a solvent forming a polymer-solvent solution, introducing the polymer-solvent solution into a thermal dryer, heating or cool... | 11/21/2000 |
