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| Number | Title | Issue Date |
| 7431805 | Method and apparatus for simultaneous heat and mass transfer utilizing a carrier-gas at various absolute pressures A method, system, and apparatuses for simultaneous heat and mass transfer utilizing a carrier-gas at various absolute pressures are described. A method may include: thermally coupling at least two continuous contacting apparatuses together; varying the pressure betw... | 10/07/2008 |
| 7381310 | Installation used to obtain salt-free sea water at a low temperature with continuous operation and enthalpy recovery A sea water desalination installation that employs an evaporation-condensation system which operates continuously at a low temperature and which enables the recovery of energy released. The installation includes a cylindrical evaporator having a large evaporation su... | 06/03/2008 |
| 7368040 | Apparatus for and method of heating fluid and distilling fluid A method and an apparatus for heating fluid with a gas heater and distilling fluid with the pilot light of the gas heater are disclosed. The apparatus for heating fluid and distilling fluid includes a main tank for containing fluid to be heated, a heater, adapted to... | 05/06/2008 |
| 7347918 | Energy efficient evaporation system An evaporation system uses the weight of condensed liquid as an energy source. An inlet feed is introduced into an enclosure through an inlet. The inlet feed is vaporized in an evaporation region of the enclosure, and condensed to a liquid in a condensation region o... | 03/25/2008 |
| 7337828 | Heat transfer using a heat driven loop A heat transfer fluid medium (25) within the closed system is arranged to boil to form a vapor in the evaporation section (12) and such that release of heat from the condensation section (11) to the fluid to be heated (4A) causes the vapo... | 03/04/2008 |
| 7320745 | Energy efficient method for exothermic reactions An energy efficient process scheme for a highly exothermic reaction-distillation system in which the reactor is external to the distillation column and the feed to the reactor is a mixture of at least one liquid product stream from the distillation column with or wi... | 01/22/2008 |
| 7182840 | Method and device for exploiting heat resulting from the production of 1,2-dichloroethane The invention relates to a method and a device for the optimal use of reaction heat resulting from the production of 1,2-dichloroethane from ethene and chlorine. The aim of the invention is achieved by extracting reaction heat liberated during the reaction of chlori... | 02/27/2007 |
| 7048833 | Method and apparatus for treating oxygenate-containing feeds and their use in conversion of oxygenates to olefins A feed vaporization process and apparatus for oxygenate to olefin conversion is provided which uses a vapor-liquid disengaging drum to separate non-volatiles and/or partial non-volatiles from volatiles in the oxygenate feed and produce a vaporized effluent that is r... | 05/23/2006 |
| 6805774 | Apparatus and process for purifying a liquid by thermoelectric peltier means A continuous process and apparatus is provided for treating an impure liquid to produce purified liquid. The process includes electrically activating a thermoelectric module (24) to provide a first module heated surface (26) and a module cooler surface... | 10/19/2004 |
| 6793777 | Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid The invention relates to a method for separating and purifying an aqueous mixture that mainly consists of acetic acid, formic acid and high-boiling substances by extraction with a solvent in a cyclic process. The inventive method is characterized in that the flow of... | 09/21/2004 |
| 6790313 | Method of cleaning sulfide contaminated condensates A method to remove sulfides and other volatile contaminants from liquor vapor condensate in a pulp manufacturing process, where the mentioned liquor vapor condensate is fed into a stripper, which is part of a closed loop system including the stripper, a regenerative... | 09/14/2004 |
| 6735979 | Process for pretreating a natural gas containing acid gases A process for pretreating a very acid natural gas containing a substantial amount of hydrogen sulfide (H2S), possibly combined with carbon dioxide (CO2), includes at least a stage wherein the initial natural gas is contacted in a distillation c... | 05/18/2004 |
| 6699369 | Apparatus and method for thermal desalination based on pressurized formation and evaporation of droplets A method for removing dissolved solids, particularly salts, from water. An apparatus for performing the inventive method is disclosed. The aqueous solution to be treated, for example sea water, is atomized using special non-pneumatic nozzles, and sprayed ... | 03/02/2004 |
| 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 |
| 6565715 | Land-based desalination using buoyant hydrate Methods and apparatus for desalination of salt water (and purification of polluted water) are disclosed. Salt water is pumped to a desalination installation and down to the base of a desalination fractionation column, where it is mixed with hydrate-formin... | 05/20/2003 |
| 6551466 | Multiple effect distillation process with reduced fouling A method and apparatus for removing a contaminant from a fluid feed stream containing the contaminant. The method includes the steps of providing a feed stream and heating it in a first step to at least partially remove some of the contaminants and recove... | 04/22/2003 |
| 6508916 | Process for recovering processing liquids A process for recovering processing liquids such as gas-treating liquids wherein a feed mixture containing the processing liquid, water, and optionally additional components that are more volatile than the processing liquid and components that are less vo... | 01/21/2003 |
| 6482297 | Method for distilling ammonia The present invention relates to an improved process for distilling ammonia from a mixture, more particular from a mixture resulting from the reaction between aminonitrile and water (which reaction is also called cyclizing hydrolysis). The process for dis... | 11/19/2002 |
| 6383342 | Cluster rule compliance with reduced steam consumption A method and system for handling foul condensate containing Hazardous Air Pollutants (HAPs) in a cellulose pulp mill has enhanced energy efficiency and lower cooling water usage, while complying with the Cluster Rules and other environmental regulations. ... | 05/07/2002 |
| 6375805 | Apparatus and process for purifying a liquid An improved continuous process and apparatus for treating an impure liquid to produce purified liquid, particularly, water, the process having an electrically activating a thermoelectric module to provide a first heated surface and a cooler surface; feedi... | 04/23/2002 |
| 6365005 | Apparatus and method for vapor compression distillation An improved design of a vapor compression distiller which makes use of a rapid, highly turbulent flow through the heat-of-evaporation recovery, or primary, heat exchanger. The distiller may also include the use of turbulators to increase turbulence and mi... | 04/02/2002 |
| 6355145 | Distillation process with reduced fouling A method for removing a contaminant from a fluid feed stream containing the contaminant. The method includes the steps of providing a feed stream and heating it in a first step to at least partially remove some of the contaminants and recover energy from ... | 03/12/2002 |
| 6261412 | Regenerative heat recovery for high temperature condensate stripping plants The EPA Cluster Rules for cellulose pulp mills are complied with by first collecting foul condensate including hazardous air pollutants (HAPs), such as methanol, at a temperature of between about 140-180° F., and passing the foul condensate into direct c... | 07/17/2001 |
| 6217711 | Method of treating condensates A method of treating cellulose pulp mill condensates having an MeOH content using an evaporator and a steam stripper having a reboiler, comprising: (a) Collecting a feed liquor stream having at least 50% of the pulp mill MeOH. (b) Feeding the feed liquor ... | 04/17/2001 |
| 6120651 | Method for removing water from an aqueous fluid mixture A method permits concentration of a water-miscible organic liquid in a mixture of such liquid and water, with recovery of a desired concentrate of the water-miscible organic liquid and water, and a relatively clean water containing only a very low contest... | 09/19/2000 |
| 6113744 | Water distillation apparatus A water distillation apparatus includes a degasification chamber having a top and a bottom. A liquid inlet is positioned adjacent to the bottom. A gas outlet is positioned adjacent to the top. A liquid outlet is positioned intermediate the top and the bot... | 09/05/2000 |
| 6106673 | Method for separating components of a fermentation process byproduct containing oil bound with fibers A process and system are provided for the separation of a fermentation process byproduct into its constituent components and for the subsequent recovery of those constituent components. The process is remarkably simple--requiring only 1) heating of a mixt... | 08/22/2000 |
| 5935388 | Distillation plant with a heat pump A distillation plant includes a heat pump whose working fluid is compressed by a vapor jet compressor. A collection location for a liquid is arranged in the stripper part of a distillation column of the plant. At least a portion of the collected liquid is... | 08/10/1999 |
| 5925223 | Process for improving thermal efficiency while producing power and desalinating water A process and apparatus for improving the thermal efficiency of a steam turbine power generating plant while simultaneously desalinating seawater or brine and purifying water which contains minerals, salts, and other dissolved solids. Exhaust gases from a... | 07/20/1999 |
| 5916422 | Method of purifying acetic acid A method for purifying acetic acid containing at least one component selected from the group consisting of unsaturated compounds and carbonyl compounds as an impurity involves the step of purifying the acetic acid with a distillation column having at leas... | 06/29/1999 |
| 5897749 | Continuous distillative separation of liquid mixtures which contain (meth) acrylic acid as the main component Liquid mixtures which contain (meth)acrylic acid as the main component are continuously separated in a distillation apparatus which comprises a still, a condenser and a connection between still and condenser and to which the liquid mixture to be separated... | 04/27/1999 |
| 5865957 | Method for producing butyraldehydes A method for producing butyraldehydes, by separating and purifying mixed butyraldehyde products formed by hydroformylation of propylene, into n-butyraldehyde and isobutyraldehyde by using a distillation column, wherein the distillation column is operated ... | 02/02/1999 |
| 5830314 | Cleaning condensates from multi-effect evaporator of cellulose pulp waste liquors Volatile compounds, such as methanol, are separated from secondary condensates formed in multi-effect evaporation of waste liquor, such as black liquor, from cellulose pulp processes. The condensable secondary vapor is condensed into first and second cond... | 11/03/1998 |
| 5705036 | Water distilling apparatus A water distilling apparatus includes a preheat tank having an inlet and an outlet for storing water from a water source via the inlet, a boiling tank formed of a conductive casing connected to a ground potential and having an inlet in connection with the... | 01/06/1998 |
| 5695614 | Method for processing waste liquids in particular industrial waste water having a high solids content A method for processing waste liquids, having high solids content. The process includes the steps of spraying and evaporating the waste liquid together with a dry gas in a counterflow of dry gas within a spray tower, collecting the solids of the waste wat... | 12/09/1997 |
| 5600049 | Process for depropanizing benzene In the alkylation of benzene with propylene in a distillation column reactor to produce cumene the overheads from the distillation reactor are fed to a depropanizer where the unreacted benzene is separated from C3 's. Liquid propylene feed for ... | 02/04/1997 |
| 5597454 | Process for producing urea A urea production process combining lower pressure urea concentration and carbamate recovery steps into a single non-vacuum operation. Following high pressure stripping wherein a bulk of unreacted carbamate is recovered from the reaction effluent, remaini... | 01/28/1997 |
| 5582690 | Method of and means for water desalinization Desalination of sea water is achieved using a solar pond that includes a halocline interposed between a convective upper wind mixed layer exposed to the ambient atmosphere, and a lower heat storage layer of hot, concentrated brine, Hot brine from the heat... | 12/10/1996 |
| 5573645 | Process and apparatus for the separation of aromatic hydrocarbons A distillation process and apparatus for recovering high purity aromatic products from a mixed aromatic hydrocarbon feedstock containing benzene, toluene and xylene by use of distillation towers integrated by heat exchange whereby substantial savings in o... | 11/12/1996 |
| 5565068 | Energy conservation during plural stage distillation In the multistage distillation of a methyl tertiary butyl ether reaction product comprising methyl tertiary butyl ether, tertiary butyl alcohol, methanol, isobutylene and water, the methyl tertiary butyl ether reaction product is separated in a primary me... | 10/15/1996 |
