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| Number | Title | Issue Date |
| 7332058 | Heat exchanger and process for devolatilizing polymers using same Disclosed is a process for devolatilizing a polymer including passing the polymer through a devolatizer including a plate heat exchanger wherein the plates of the plate heat exchanger are heated by a plurality of heating tubes and wherein the heating tube including ... | 02/19/2008 |
| 7251944 | Vapor-compression evaporation system and method According to one embodiment of the invention, a vapor-compression evaporation system includes a plurality of vessels in series each containing a feed having a nonvolatile component. A first set of the plurality of vessels includes vapor-compression evaporators and a... | 08/07/2007 |
| 7153394 | System to isolate dianhydrides A process to isolate dianhydride from an exchange reaction comprises extracting a bisimide/anhydride exchange reaction aqueous phase with an organic solution comprising an exchange catalyst at a first temperature and pressure to form an extracted aqueous phase compr... | 12/26/2006 |
| 7112262 | Device for downward flow evaporation of a liquid substance and subsequent condensation of the vapour formed A device is disclosed for downward flow evaporation of a liquid substance and subsequent condensation of the vapor formed, which includes a plurality of vertical evaporator tubes housed in a common casing in side-by-side relationship, a distributor tank which is arr... | 09/26/2006 |
| 7089762 | Multi-stage vacuum distilling, cooling and freezing processes and apparatuses for solution separation and seawater desalination Multi-stage vacuum distilling, cooling, and freezing processes for solution separation and seawater desalination are implemented through multi-stage vacuum distilling, cooling, and freezing systems. The systems are set to their initial state for implementing constan... | 08/15/2006 |
| 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 |
| 6955754 | Compact fluid cleaning system An efficient fluid cleaning system. The efficient system includes a first mechanism for changing the pressure of a fluid from a first pressure to a second pressure, the second pressure being lower than the first pressure. A second mechanism distributes the fluid wit... | 10/18/2005 |
| 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 |
| 6695951 | Saline/sewage water reclamation system The present water reclamation system includes a series of concentric thin shells. The shells mount within a housing that can be maintained under vacuum or low pressure. The shells rotate at high velocity. Contaminated liquid from outside the housing is in... | 02/24/2004 |
| 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 |
| 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 |
| 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 |
| 6068730 | Liquid distributor for evaporator A liquid distributor for distributing liquid over the heat transfer surface of an evaporator includes a channel array including one or more supply channels and downwardly deviating distribution channels. Each distribution channel has a step-shaped expansi... | 05/30/2000 |
| 6066232 | Method and vaporizer for vaporizing oxidation-sensitive compounds The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact... | 05/23/2000 |
| 5944950 | Process for the final evaporation of black liquor The process for the final evaporation has at least two evaporation appliances. These appliances are coupled in series with respect to the black liquor and in parallel with the live steam (primary steam), which drives the evaporation, and with the secondar... | 08/31/1999 |
| 5853549 | Desalination of seawater by evaporation in a multi-stack array of vertical tube bundles, with waste heat. A large and economical type of multi-stack vertical tube evaporator (MS-VTE) having units of multiple stacks of vertical tube bundles or stages mounted in a single vessel, and having its liquid feed pumped to the uppermost VTE bundle stack or stage and ha... | 12/29/1998 |
| 5849148 | Distributor plate and evaporator An evaporator system including a plurality of effects arranged in series for progressively concentrating a liquid, the effects each including: a header chamber for receiving liquid to be concentrated; a multiplicity of tubes adapted to provide evaporation... | 12/15/1998 |
| 5792663 | High efficiency continuous flow through fractional-volatilization separator system, and method of use Fractional-volatilization separation systems and methods are disclosed which enable a stable, continuous, non-bubbling liquid flow, essentially constant surface area/volume ratio, temperature controlled, fractional volatilization of volatile/semi-volatile... | 08/11/1998 |
| 5684125 | Method and device for purifying liquid polysiloxane material and its use The invention relates to a method for purifying liquid polysiloxane containing impurities as a low-molecular-weight fraction, by evaporating the low-molecular-weight fraction, in which method a liquid stream of impure liquid material in the form of a bund... | 11/04/1997 |
| 5573635 | Thin film evaporating device A thin film evaporating device includes a housing defining a space for receiving a plurality of elongated tubular evaporators. An inlet is associated with the housing for feeding a flowable heating medium to the space for heating the plurality of elongate... | 11/12/1996 |
| 5423952 | Structure for multiple-effect distillation A concatenable module for a multiple-effect still has a chamber encompassed by four walls and two baffles, where one baffle is shared with the preceeding effect and the other the subsequent effect. Heat exchanger tubes mount into an accumulator which is s... | 06/13/1995 |
| 5419810 | Thin-film evaporator made of a corrosion resistant material The invention relates to a thin-film evaporator equipped with a heatable tubular evaporator body in whose product charged interior a driven rotor is disposed which is equipped with essentially radially oriented vanes. The invention is formed from an evapo... | 05/30/1995 |
| 5385645 | Heat transfer apparatus with positive drive orbital whip rod A heat transfer apparatus for processing a liquid continuously has a positive mechanical drive for a set of vertical whip rods each disposed in a vertical heat transfer tube. Each whip rod is free-standing on its lower end and is sufficiently flexible to ... | 01/31/1995 |
| 5246541 | Evaporator for liquid solutions A falling film evaporator includes a chamber having a top and bottom tube plate; a plurality of vertical tubes each having an interior and exterior surface and extending through the chamber and being supported by the top and bottom tube plates; an inlet a... | 09/21/1993 |
| 5221439 | Orbital tube evaporator with improved heat transfer An orbital evaporator has a vertical heat transfer tube or tubes mounted in a container driven in an orbital motion. A stiff whip rod is freely movable within the tube. Its lower end rests on a horizontal plate. The orbital motion causes the rod to roll o... | 06/22/1993 |
| 5151154 | Evaporation assembly with vapor circulating means An evaporation assembly for concentrating liquids having an evaporation area for conveying a liquid to be concentrated and a heating system for heating and concentrating the liquid conveyed through the evaporation area. The evaporation area includes a liq... | 09/29/1992 |
| 5004043 | Internal tubular falling film apparatus for the evaporation of liquids and for the absortion or degassing of solutions of two or more substances Apparatus (10) for the evaporation of liquids or for the absorption or degassing of two-substance or multi-substance solutions of the interior tube falling film type of construction, with a pressure tank (12) through which a heat exchanging medium can pas... | 04/02/1991 |
| 4981555 | Process and apparatus for concentrating a solution The solutions are concentrated by multiple-effect evaporation in indirectly heated evaporators. The highest concentration of the solution is reached in a final evaporator stage, which is heated with live steam. The final evaporators stage includes two to ... | 01/01/1991 |
| 4932468 | Vertical falling film multi-tube heat exchanger A heat exchanger with a multiplicity of generally vertical heat transfer tubes has an improved liquid distribution arrangement in its upper inlet head. The liquid distribution arrangement includes a flow diverting baffle disposed within the inlet head abo... | 06/12/1990 |
| 4924936 | Multiple, parallel packed column vaporizer A multiple, parallel packed column vaporizer for vaporizing a chemical having a relatively low decomposition temperature includes a shell; a plurality of parallel, vertically oriented vaporization columns arranged in the shell, each vaporization column ha... | 05/15/1990 |
| 4865689 | Method and apparatus for evaporating the volatile components of a polymer A device for removing the volatile components of a polymer in a polymer train includes a hollow pipe which defines an interior chamber, a pair of flanges mounted on opposite axial ends of the pipe, a heat jacket mounted on the pipe and disposed to surroun... | 09/12/1989 |
| 4857144 | Apparatus for improved top feed distribution for falling film evaporator An evaporator having a vertically mounted elongated tubular chamber, a pair of upper and lower tube sheets mounted near the ends of said tubular chamber, each tube sheet having a plurality of openings therein with a plurality of vertical evaporator tubes ... | 08/15/1989 |
| 4810330 | Process for deodorizing and/or physical refining relatively small, varying charges of high-boiling liquids Deodorizing and/or physical refining of relatively small, varying charges of high-boiling liquids, viz. fatty acids, edible oils, fats, glycerides and other high-boilding esters, is conducted continuously in a single-stage or multi-stage falling-film colu... | 03/07/1989 |
| 4799542 | Heat exchanger with thin-film evaporator A heat exchanger designed to cool a liquid such as water has a boiler with several upright heat-transfer tubes on whose inner surfaces the liquid descends in the form of a thin film while a refrigerant such as ammonia or a Freon rises within the boiler. T... | 01/24/1989 |
| 4781797 | Apparatus for the recovery of gas dissolved in flue condensate An apparatus and process for separating a more volatile substance from a liquid in which it is dissolved by vacuum means. The apparatus has a perforated inner casing having a plurality of sub-stages which contain packing material to provide a tortuous pat... | 11/01/1988 |
| 4659433 | Concentrating and dehydrating apparatus for maleic anhydride Apparatus for concentrating and dehydrating maleic acid to form maleic anhydride, comprising: at least a first and a second vertical, independent and distinct, falling thin-film, multitubular evaporators of the static type arranged in series, wherein the ... | 04/21/1987 |
| 4618399 | Wobble tube evaporator with whip rod fluid distributor An evaporation or distillation apparatus uses one or more tubes driven to wobble about a vertical wobble axis that is aligned with the tube. A fluid distributor supplies a fluid to the inner surface of the wobbling tube at its upper end. A flexible whip r... | 10/21/1986 |
| 4586565 | Plate evaporator A plate evaporator of the rising film type and/or the falling film type comprises several heat exchange plates essentially vertically arranged in spaced face-to-face relationship to define evaporation passages alternating with heating medium passages. Eva... | 05/06/1986 |
| 4447293 | Scraping blades for use in thin film dryers A scraping blade for use in a thin film dryer adapted for processing radioactive substances comprises a main body, a hing member rigidly attached to one side of the body and pivotably connected to a rotor in the dryer, a blade chip attached to the other s... | 05/08/1984 |
| 4441963 | Distillation apparatus Distillation apparatus in which a group of pairs of heat-transfer tubes are each driven to wobble about a vertical axis which passes through a wobbling center. A stream of fluid is directed to flow down inside each tube. The fluid stream tends to cling to... | 04/10/1984 |
