Ejector-eductor Patents (Class 203/DIG14)
  • Patent number: 6086721
    Abstract: A vacuum-creating apparatus of the unit is provided with a pump and a separator, wherein the pump is connected at its inlet to the separator, a jet device is made as a liquid-gas device and is connected at its outlet, by means of a pressure main, to the separator and at its liquid input to an output of the pump, wherein the longitudinal axis of the jet device is positioned vertically, the permissible deviation from the vertical axis being .+-.15.degree., an outlet cross section of a liquid supply nozzle of the jet device is positioned at a height of from 5 m to 35 m above an inlet to the separator and an outlet section of the pressure main is positioned below the level of the liquid in the separator to form a hydraulic seal.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: July 11, 2000
    Inventor: Valery Grigorievich Tsegelsky
  • Patent number: 5980698
    Abstract: A method for vacuum distillation includes separation of a liquid product delivered to a reservoir under vacuum into a vapour-gaseous phase and at least one liquid fraction, withdrawal of the vapour-gaseous phase from the reservoir using a vacuum-creating device, and subsequent separation of the vapour-gaseous phase into gas and a liquid phase by condensing performed directly in the vacumm-creating device. A portion of the liquid phase is used as a fluid working medium in the vacuum-creating device.An equipment for vacuum distillation includes a reservoir under vacuum conditions equipped with mains and a vacuum-creating device, which has an ejector, a separator and a pump, interconnected by mains.
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: November 9, 1999
    Assignee: Valery Grigorievich Tsegelsky
    Inventors: Alexandr Alexeevich Abrosimov, Alexandr Mikhailovich Kochemasov, Ivan Alexandrovich Kochergin, Valery Grigorievich Tsegelsky
  • Patent number: 5944950
    Abstract: 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 secondary steam that is generated by the evaporation. The pressure of the primary steam that is supplied to the appliance(s) where the liquor concentration is at the highest concentration is greater than the pressure of the primary steam supplied to the other appliances where the liquor concentration is not so high.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: August 31, 1999
    Assignee: Kvaerner Pulping AB
    Inventors: Lars Olausson, Olle Wennberg
  • Patent number: 5935388
    Abstract: 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 provided in the vaporized form as strip vapor. Connections lead from the collection location to a first vaporizer and to a second vaporizer. The liquid can be vaporized in these vaporizers at an elevated and at a reduced pressure respectively. The vapor jet compressor is connected to the two vaporizers and to the column in such a manner that the vapor from the second vaporizer can be compressed under a driving jet action of the vapor from the first vaporizer and used in the column as strip vapor. A pump is arranged in the connection to the first vaporizer and at least one restrictor member is contained in the connection to the second vaporizer.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: August 10, 1999
    Assignee: Sulzer Chemtech AG
    Inventor: Istvan Meszaros
  • Patent number: 5762763
    Abstract: A method and apparatus for separating water from a condensate mixture having two or more components drained from a compressed gas system is disclosed. The apparatus has a boiler with an inlet for receiving the condensate mixture and an outlet through which water vapor is removed. The boiler is maintained at sufficient negative pressure to lower the boiling point of the water in the condensate mixture and to enable the water in the boiler to boil at a lower temperature than if the negative pressure were not present. Heat is provided to the boiler to raise the temperature of the condensate mixture to equal or exceed that of the boiling point of the water in the negative pressure environment, but below the boiling point of the remaining components in the condensate mixture.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: June 9, 1998
    Assignee: Flair Corporation
    Inventor: Mikhail Tsargorodski
  • Patent number: 5744009
    Abstract: An improved urea recovery process is presented. In the improved process, multiple vacuum rated surface condensers used to condense water vapor evolved during urea vacuum evaporation/concentration are replaced by a direct contact cooler/absorber to obtain substantial capital and utility cost savings. Improved heat exchange efficiency of the present process significantly reduces cooling water usage in comparison to the surface condensers.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: April 28, 1998
    Assignee: The M. W. Kellogg Company
    Inventors: Vishnu Deo Singh, Richard Bruce Strait, Thomas Anthony Czuppon
  • Patent number: 5672250
    Abstract: A solar seawater desalination system is designed to operate in a self-sustaining manner without the need for any moving parts. Seawater is converted to steam in a solar heat collector panel and the steam is led in a steam pipe through a series of primary cooling chambers where it is condensed by incoming seawater in tanks jacketing the steam tube. The tanks are connected in series between an inlet air-lock regulator and the solar collector panel so that the seawater is caused to flow successively through the tanks from the inlet to the collector panel as make-up water, solely by pressure differentials created in the system by the steam generation. Excessively saline seawater which collects in the collector panel is dumped from the system in a similar manner through an outlet air-lock regulator. Secondary cooling chambers may be provided to condense steam generated from the seawater in the primary cooling chambers by heat received from the steam pipe.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: September 30, 1997
    Inventors: Husein Ambadar, Zantar Ambadar, Zeky Ambadar
  • Patent number: 5614066
    Abstract: An apparatus for converting seawater or other contaminated water into pure water for reuse including: a source of the contaminated water; a first horizontal housing connected to the source of contaminated water and having a heat exchanger therein for vaporizing the contaminated water therein; a vertical housing connected to the distal end of the first horizontal housing for fluid communication therebetween; a second horizontal housing connected at its proximate end to the vertical housing for fluid communication therebetween, the second horizontal housing having a heat exchanger therein for condensing vapor therein; a weir vertically mounted in the first housing for retaining a portion of the contaminated water in the first housing and allowing the other portion of the contaminated water to pass through the heat exchange evaporator from the proximate to distal end of the first housing.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: March 25, 1997
    Inventor: William R. Williamson
  • Patent number: 5580426
    Abstract: A regenerating system, for the removal of water and potentially harmful organic constituents from a dehydration fluid used to dehydrate natural gas. The system includes a device to assure positive flow of the water and organic constituent vapor out of the regenerator, to, in turn, control back pressure associated with the regenerator during the distillation process.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: December 3, 1996
    Assignee: Gas Research Institute
    Inventor: Ram Ganeshan
  • Patent number: 5439560
    Abstract: An apparatus for concentrating a photographic processing solution in which there are provided an evaporation chamber, a heater for heating the solution to generate a vapor in the evaporation chamber, a condensation chamber communicated to the evaporation chamber for recieving the vapor, a cooling device for cooling the vapor to generate a condensation, and an ejector for reducing the pressure in the evaporation chamber and the condensation chamber. There is further provided a heat pump having a heat radiating portion used for the heater and a plurality of heat absorbing portions, one of which is used for the cooling device.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: August 8, 1995
    Assignees: Konica Corporation, Sanyo Electric Co., Ltd.
    Inventors: Masayuki Kurematsu, Nobutaka Goto
  • Patent number: 5271810
    Abstract: A distillation device for separating a liquid mixture from contaminants contained therein. The device partially cools, using an air radiator or equivalent passive heat-exchange device, a fluid of that contains at least one component of the mixture to be separated; the temperature of the fluid does not fall the ambient air temperature, thus preventing condensation on the heat exchanger. The partially cooled fluid is introduced into an aspirator and combined therein with a gaseous stream produced by heating the mixture to boiling in a separate chamber. Because of the high surface area of contact between vapor and aspirated liquid, the heat transfer is completely effective to condense the gaseous mixture, which settles into a pool. The components can then be separated mechanically or by gravity.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: December 21, 1993
    Assignee: Environmental Solvents Corporation
    Inventors: Gene E. Keyser, Robert L. Klopfenstein
  • Patent number: 5248394
    Abstract: A distillation purifying system including a section which creates a vacuum pressure that is transmitted throughout the system, a distillation/purification zone in which fluids to be distilled/purified are treated, and a collection zone in which the distilled/purified liquids are transferred. The system is effective for use with liquids, solutions, fluids and the like and can be used for water treatment as well as bodily fluid treatment.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: September 28, 1993
    Assignee: FSR Patented Technologies, Ltd.
    Inventors: Barry Schlesinger, Harold Rapp
  • Patent number: 5209828
    Abstract: A system and method of concentrating spent caustic at a refinery has a multi-stage flash drum for separating a spent caustic stream into an overhead output stream including vaporized water and volatile organic compounds, and a concentrated spent caustic output stream. The system also has a condenser for condensing the overhead output stream, and a separator for separating the condensed overhead output stream into a volatile organic compound stream, a liquid hydrocarbon stream and a water stream. The system further has an ejector for applying a vacuum to the flash drum to vaporize the spent caustic stream at a reduced temperature, and to the separator to remove the volatile organic compound stream. The volatile organic compounds are removed from the overhead of the separator through the ejector to a burner of a fired heater.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: May 11, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Tai-Sheng Chou, Manuel Gonzalez
  • Patent number: 5198076
    Abstract: A low-pressure desalinization in a water chamber having an open end submerged in a water supply such as an ocean. An air exhaust pump draws air out of the water chamber to lower the surface tension of an upper stratum of water, which is thereby converted to vapor and subsequently condensed to nonsalinated water and collected in a U-shaped trap with a pair of sealing, closable valves. Moreover, a velocity enhancing parabolic channel is included for efficiently utilizing the potential energy of the fresh water. The fresh water is conveyed from its height at the top of the water chamber to a turbine via a velocity enhancement parabolic channel which enhances the velocity of the water for the turbine. The desalinator also includes a plurality of strips of sheeting partially immersed in the water being desalinated and drawing water therefrom via capillary action to increase the surface area of the water being subjected to the vacuum.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: March 30, 1993
    Assignee: Bowpec Incorporated
    Inventor: Peter M. Borgren
  • Patent number: 5167773
    Abstract: A distillation tower (1) has a plurality of liquid sidestream lines (5, 6, 7) and a multi-stage sidestream stripper (13) which includes a respective stripping section (14, 15, 16) for each sidestream line housed in a common, upright, cylindrical shell (28) which allows vapor to pass freely from each stage to the one above. Partial vaporization of each sidestream is achieved by applying a vacuum to the top of the stripper shell (point 21) and/or introducing strip gas at the bottom (point 20). Because the vapor passes serially through the stripping sections from the bottom of the stripper (13) to the top, the need to supply strip gas separately to the stripping sections and/or apply vacuum individually is avoided. The separation between the sidestream products is improved by including, in each stage, a rectification zone (22, 23, 24) positioned above the stripping section.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: December 1, 1992
    Assignee: Exxon Research and Engineering Co.
    Inventors: James D. Eagan, Adrianus Welmers
  • Patent number: 5139620
    Abstract: Evaporation of saline water in a desalinization process, or evaporation of other types of liquid such as black liquor from paper pulp processing, is accomplished utilizing a multiple effect evaporator. Each effect includes one or more (e.g. first and second) sets of horizontally elongated dimpled plate evaporator elements. Horizontally flowing heating fluid, such as steam, is introduced to the internal passage of at least the second set in all the effects, and a head of circulation liquid is provided to cause liquid being evaporated to flow downwardly from the head over the external surfaces of the sets of dimpled plates in a thin film. The vapor evaporated is drawn through a demistor and is used as the heating fluid for the next effect. Recirculating liquid that has not evaporated and liquid separated by the demisting process are recirculated to the head associated with each effect. Clean condensate--such as distilled water--is withdrawn from the last effect.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: August 18, 1992
    Assignee: Kamyr, Inc.
    Inventors: Carl E. Elmore, Kyle Infante
  • Patent number: 5133837
    Abstract: A multi-stage flash evaporator is constructed so that the evaporator elements are dimpled plates mounted so that they extend horizontally. One, two, or more sets of plates may be mounted in each evaporator stage, the sets stacked upon one another in a tier arrangement. Each stage may be formed by a circular cross-section vessel, with I-beams--or like supports--extending horizontally at about the horizontal diameter of the vessel, and supporting the dimpled plates on them. A condensate collection trough is mounted below the dimpled plates and at the I-beams, the I-beams having openings in them through which condensate collected by the trough passes from one end of the vessel to the other. The hot liquid --such as sea water to be desalinated--to be evaporated is passed into a bottom chamber of each stage vessel, with vapor flowing upwardly through demistors and channels, into contact with the dimpled plates, and the condensate falling as a thin film down the plates and collecting in the condensate trough.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: July 28, 1992
    Assignee: Kamyr, Inc.
    Inventors: Carl L. Elmore, Kyle D. Infante
  • Patent number: 5102504
    Abstract: A device for solvent recovery in an ultrasonic cleaning machine is based on utilization of the negative pressure originating from the liquification of the solvent vapor itself in a heat exchanger and the negative pressure from an ejector. Thus, the solvent vapor in a vapor zone is led out of a distillation vessel, cooled outside of the vessel, liquidfied, once again returned to a solvent vessel and, at the same time, the liquification of the solvent vapor which is incompletely liquified from this cooling and liquification process is accelerated even more in the negative pressure section of the ejector. Accordingly, the amount of water mixed into the recovered solvent is extremely reduced so that satisfactory cleaning in the ultrasonic cleaner can be ensured.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: April 7, 1992
    Inventor: Tetsuya Saito
  • Patent number: 5082012
    Abstract: Energy efficient apparatus of compact size and configuration for the decontamination of the PCB contaminated fluid removed from transformers is disclosed. The apparatus includes a fluid circulation loop with a side stream to a distillation means followed by a venturi for reintroducing the vapors of distillation into the circulating loop of contaminated fluid.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: January 21, 1992
    Assignee: Ensr Corporation
    Inventors: Michael J. Massey, David R. Hopper, Mark N. DeDecker
  • Patent number: 5028298
    Abstract: The present invention relates to a technique of concentrating waste water whereby the water content of the waste water is removed with a high decontamination factor, employs a porous membrane having a property allowing gas such as steam to permeate but not allowing a liquid such as water to do, as a membrane for concentrating the waste water, and adopts a method wherein the waste water is turned into a vapor flow and this vapor flow is made to contact the porous membrane so as for the waste water to be concentrated on the occasion when the waste water is to be concentrated by means of this porous membrane. By turning the waste water into the vapor flow, most of various metal ions, a surfactant, etc. existing in the waste water are separated from the vapor flow. Mist, metal ions in the mist and others contained in the vapor flow are removed by the aforesaid porous membrane from the steam while permeating the same.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: July 2, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Tsutomu Baba, Koichi Chino, Shunsuke Uchida, Toshio Sawa, Makoto Kikuchi
  • Patent number: 4985122
    Abstract: Method and apparatus for separating volatile contaminants from a liquid to be continuously distilled. A continuous still comprises evaporator (1) having a heating coil (2), and condensor coil (6), and distillate collector (5). An entrainment device (11) removes distillate (13) from collector (5) via line (10) and reduces pressure in evaporator (1). Feed liquid (21) containing volatile contaminants is charged batchwise to a pre-chamber (20) at sub-atmospheric pressure which is then sealed (valve 22) from feed supply (21). Volatile contaminants are extracted from the charge in prechamber (20) via line (26) and entrainment device (32). Pre-chamber (20) is subsequently placed in communication (via valve 25) with evaporator (1) whereby to equilibrate pressure between evaporator (1) and pre-chamber (20).
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: January 15, 1991
    Assignee: Vaqua Limited
    Inventor: Colin W. Spencer
  • Patent number: 4938868
    Abstract: The vacuum column system distills liquid under partial vacuum conditions. The system rigorously splashes and boils liquid in a boiler chamber so as to form vapor and a rising mist from the splashing liquid. The vapor and mist rise in a circularly converging path through a mist collector. The heavier mist strikes the surfaces of the mist collector and deposits on those surfaces, thereby separating itself from the vapor. The vapor is then drawn to a condensor chamber where droplets of treated liquid are sprayed through it and fall into a shallow pool of treated liquid. The droplets seed condensation of the vapor directly onto the droplets. Also, the droplets assist in encapsulating bubbles of vapor in the pool as the droplets fall into the pool. The bubbles are then entrained with other treated liquid of the pool as the treated liquid is drawn from the pool down an entrainment conduit.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: July 3, 1990
    Inventor: Thomas R. Nelson
  • Patent number: 4929312
    Abstract: A solvent recovery system is provided which is characterized by improved efficiency and safety. The system includes an evaporator unit having a heat source for vaporizing contaminated solvent. The resulting vapors are subsequently liquified in a condensing unit. During evaporation and condensation of the solvent, a negative pressure is maintained within the system using a vacuum generator. After condensation, the liquid solvent passes into at least one accumulator which is periodically drained. The accumulator and vacuum generator operate in synchronization so that a vacuum is maintained in the system while drainage of the accumulator occurs. Since the evaporation and condensation systems of the invention are maintained at a negative pressure, any leaks therein do not result in the escape of flammable vapors.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: May 29, 1990
    Inventor: Robert D. Westcott
  • Patent number: 4927494
    Abstract: A high pressure evaporation vessel which is operated at a predeterminate pressure above atmospheric pressure, is connected to a low pressure expansion vessel which is operated at a predeterminate pressure below the pressure prevailing in the high pressure evaporation vessel, through a U-shaped siphon tube. The U-shaped siphon tube contains a liquid column absorbing the pressure difference existing between the high pressure evaporation vessel and the low pressure expansion vessel.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: May 22, 1990
    Assignee: Sulzer-Escher Wyss AG
    Inventors: Robert Winkler, Siro Sala, Takayuki Kobayashi, Shinjiro Yokota
  • Patent number: 4913771
    Abstract: Sludge or slurry is dewatered by passing it on a screw conveyor through a sealed vessel at a vacuum more negative than -10 inches of Hg.As a result, moisture is removed from the sludge or slurry as water vapor. The vessel is sealed from air by the presence of the sludge or slurry at the inlet and outlet port extents of the vessel.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: April 3, 1990
    Inventor: Glover C. McIntyre
  • Patent number: 4820542
    Abstract: Vegetable matter such as lucerne is dried; the latter is heated and then pressed. The liquid is treated in an evaporator employing, as heating fluid, low-pressure steam supplied by an ejector-compressor fed with high-pressure steam supplied, for example, by a nuclear power plant. Low-pressure steam taken from the outlet of the compressor-ejector is also employed to heat the lucerne at. The effluent leaving the evaporator is introduced with the remainder of the high-pressure steam into a drying unit in which air from the environment is preheated. The hot air is employed for drying the moist pressed matter.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: April 11, 1989
    Assignee: France Luzerne Complexe Agricole du Mont-Bernard
    Inventor: Olivier de Mathan
  • Patent number: 4795532
    Abstract: A method and apparatus for treating the distilled water obtained from an evaporation process sea water desalination plant is provided wherein carbon dioxide is extracted from sea water in the high temperature stages of the desalination plant and where the carbon dioxide thus extracted is dissolved into the water, along with calcium, thereby converting the distilled water into the quality suited for city tap water.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: January 3, 1989
    Assignee: Sasakura Engineering Co. Ltd.
    Inventors: Junji Mizutani, Kozo Fujita
  • Patent number: 4695349
    Abstract: A process is disclosed for distillation and/or stripping in a column, the lower portion of which is heated and the upper portion of which is cooled. The heating and cooling facilities thereof are coupled with each other by means of a heat pump system. In order to reduce the energy input, the invention provides for driving the heat pump system by means of expansion of a gas or vapor, and with the gas or vapor, after expansion, utilized as the stripping gas in the column.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: September 22, 1987
    Assignee: Linde Aktiengesellschaft
    Inventors: Hans Becker, Gerhard Linde
  • Patent number: 4690733
    Abstract: In a combination solvent extraction-steam distillation process for the recovery of aromatic hydrocarbons, the improvement comprising(a) introducing high pressure steam into a steam ejector;(b) passing the steam from step (a) to a first heat exchanger where it exchanges heat with cooler lean solvent coming from the bottom of the distillation column and is condensed;(c) returning the lean solvent from step (b) to the bottom of the distillation column;(d) passing part of the condensate from step (b) to a second heat exchanger where it exchanges heat with the warmer lean solvent coming from the bottom of the distillation column, cooling the lean solvent and vaporizing the condensate; and(e) passing the vapor from step (d) to the steam ejector in step (a).
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: September 1, 1987
    Assignee: Union Carbide Corporation
    Inventors: Paulino Forte, Jose A. Vidueira
  • Patent number: 4664786
    Abstract: In a steam distillation process for the recovery of aromatic hydrocarbons wherein there is (i) a primary flash zone at the top of the distillation zone in which rich solvent is flashed and/or (ii) provision for the removal of side cut distillate vapors from about the middle of the distillation zone, the improvement comprising (a) heat exchanging flashed rich solvent vapors or side-cut distillate vapors with stripping water to provide stripping water vapors and stripping water at at least about the boiling point of water; (b) passing the stripping water vapors from step (a) to a steam ejector; (c) passing the stripping water from step (a) to a motive steam generator wherein the stripping water is vaporized under pressure; (d) passing the stripping water vapors from step (c) to the steam ejector referred to in step (b); and (e) passing the stripping water vapors, introduced into the steam ejector in accordance with steps (b) and (d), to the lower half of the distillation zone.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: May 12, 1987
    Assignee: Union Carbide Corporation
    Inventors: Paulino Forte, Jose A. Vidueira
  • Patent number: 4664751
    Abstract: A de-salinator 10 for brackish- or salt-water has a heat insulating shell 11 closed by end plates 12. A heat exchanger 22 in the bottom of the chamber 13 is heated by engine coolant from a marine engine 27, while a pair of condensor coils 19, connected to manifolds 33, 34, use sea water to cool the fresh water vapour which is drawn off by outlets 21. The engine driven pump 37 which draws the water through the condensor coils 19 operates an eductor 36 which generates a partial vacuum in the chamber 13, drawing off brine from the bottom of the chamber and any excess water in the chamber. The level of water in the chamber 13 is maintained by drawing off a portion of the heated water passing through the condensor tubes 19. The condensate is drawn from the outlets 21 via an eductor 46 which is driven by a suction pump 45 connected to the fresh water tank 47.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: May 12, 1987
    Assignee: Nautical Services Pty. Ltd.
    Inventor: Ian D. Lloyd
  • Patent number: 4613412
    Abstract: An evacuator system employed in an evaporative waste recovery system uses an eductor to create a partial vacuum. The partial vacuum is selectively employed to evacuate concentrate and distillate from an evaporator unit for transferal to respective concentrate and distillate containers. A plurality of air operated valves are automatically operated to transfer concentrate and distillate for reuse in a plating process system.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: September 23, 1986
    Assignee: Wastesaver Corporation
    Inventor: John T. MacDermid
  • Patent number: 4595461
    Abstract: A process for the nondegenerative distillation of C.sub.6 -C.sub.24 -fatty acids, of the type obtained by splitting natural fats and oils or by synthetic processes, such as for example the oxidation of paraffins, the crude product is thermally dried under reduced pressure, the dried and heated crude product is subjected to fractional evaporation in falling-film evaporators, optionally in the presence of superheated steam, and the various vapor fractions are deposited in condensers. The thermal drying process is conducted at a temperature of 60.degree.-80.degree. C. and a pressure of 90-100 mbars. The de-watered crude product is fractionated in a film-forming evaporator and, after distillation, passes to a rectification column which condenses the low boiling constituents as the main runnings.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: June 17, 1986
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Lutz Jeromin, Wilhelm Johannisbauer, Klaus Thorausch, Franjo Skrapac, Helmut Hartmann, Karl Hentschel, Otto Michel
  • Patent number: 4584061
    Abstract: A desalinization device including a portable, spherical tank with conduits to introduce water to be converted into steam in the lower zone of the tank and guide structure to guide the steam into a condensate bowl within the tank where it is collected; the device also includes a conduit means to conduct cooling water to a cooling coil arranged in the condensate bowl to condense the steam; and within the conduits there is provided a Venturi arrangement in communication with the interior of the tank to reduce the pressure within the tank, hence lowering the boiling point of the water being heated; in a preferred embodiment Peltier devices are included as heat exchanging means in a heating and cooling circuit.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: April 22, 1986
    Inventor: Robert E. Shelton
  • Patent number: 4534828
    Abstract: An evaporator apparatus (10) and method for converting a contaminated fluid including mostly water and water soluble substances into a vapor and a residue. Apparatus (10) includes a container (11) for retaining the fluid. A heat source (17) is utilized for supplying heat to evaporate the fluid. A flue assembly (18) positioned in the fluid conveys the heat from the heat source (17) through the fluid. A draft mechanism (20) draws off the resulting vapors as they are formed.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: August 13, 1985
    Assignee: Nordale Incorporated
    Inventors: Dale C. Erickson, Norton J. Erickson
  • Patent number: 4525242
    Abstract: A heat-transfer medium is heated by a solar heat collector and then adiabatically compressed. The heat-transfer medium thus compressed exchanges heat with the seawater to heat it, and is then adiabatically expanded with the heated seawater being evaporated and the steam thus produced, upon heat exchange with the seawater, changed into fresh water.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: June 25, 1985
    Inventor: Tomimaru Iida
  • Patent number: 4452671
    Abstract: A recycle water treatment system for separating oil vapor from steam recovering the oil and heat from the steam and destroys microorganisms and exotoxins which incorporates an inclined duct connected to a barometric condenser with a container for oil at the lower end of the condenser. Oil entrained in the steam is carried up the duct and over the barometric condenser. The steam heats the condenser water that is recovered while the entrained oil flows back down the duct into a recovery container. The condenser water-steam condensate mixture is maintained at about 180.degree. F. for a period of time sufficient to destroy microorganisms and exotoxins.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: June 5, 1984
    Assignee: Nibble With Gibble's, Inc.
    Inventor: William J. Oakes
  • Patent number: 4438730
    Abstract: The inventive combination provides for a profitable and efficient utilization of low-pressure waste heat in conjunction with medium-pressure steam. The combination of mechanical and thermodynamic compression for the generation of superheated low-pressure steam is a method that has better results regarding energy and cost than any other known configuration.
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: March 27, 1984
    Assignee: Uhde GmbH
    Inventors: Gerhard Link, Siegfried Jung, Reinhold Zapp, Helmut Bar, Herbert Mader
  • Patent number: 4427495
    Abstract: Apparatus and a method for upgrading low pressure steam or brine, such as from a geothermal well, to prepare the steam or brine for any one of a number of uses, such as for conversion to pure, high pressure, high temperature steam for driving turbines. The system operates in a degasification phase in which a small amount of superheated steam is applied to the brine to scrub the same to cause the removal of concentrated gases therefrom. The degasified product is then pumped to a high pressure, heated countercurrently, and directed through a demineralized phase to remove the salts and solids in a liquid phase and convert the bulk of the water into pure, high pressure saturated steam. The steam output from the demineralizing phase can then be used to produce useful work, such as driving a turbine. In addition to forming saturated steam from geothermal brine, the system can be used to form pure saturated steam from impure water from any suitable source.
    Type: Grant
    Filed: July 2, 1982
    Date of Patent: January 24, 1984
    Inventor: Kenneth J. Masero
  • Patent number: 4420373
    Abstract: A mechanical energy conversion method and system for the restoration of dissipated heat energy, contained in natural or artificial water bodies at or near ambient temperatures, to industrial process heat, mainly in the form of steam up to 200.degree.-400.degree. C. The sensible heat contained in a water body is concentrated as latent heat in low pressure water vapor which is thermo-compressed by steam ejection to an intermediate pressure level, wherefrom mechanical compression takes over, generating highly superheated output steam. The ejecting steam is not generated in a boiler, but is continuously regenerated by the compressor and routed back for repeated ejection. The compressor is driven by a heat engine whose reject heat is collected and upgraded as well. The output of heat energy is essentially equal to the sun of the heating value of the fuel consumed and the intake of latent heat and amounts thus to substantially more than the heating value of the fuel alone.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: December 13, 1983
    Inventor: Dan Egosi
  • Patent number: 4383892
    Abstract: This invention utilizes distillation to purify water but instead of the usual application of heat to boil the water and then condense it, heat is applied to a relatively small quantity of water which is confined until it is superheated. When the pressure reaches a pre-set level the water is released allowing sudden expansion to a vapor to create a high velocity directed through a venturi to suck water from the main body of water lifting it into an expansion chamber located at the elevation above the main body of water equaling the maximum lift by suction. The vapor is then led through a heat exchanger where it will circulate until it is condensed. Some of the condensate will replenish the water to be heated while the remainder is led around the vacuum chamber to heat the water therein and then to storage.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: May 17, 1983
    Inventor: Edwin K. Woods
  • Patent number: 4381971
    Abstract: A water distillation system which includes a storage tank for impure water and a storage tank for distilled water. Impure water is pumped through a heater to an evaporator. Impure water is also pumped through an impure water jet ejector. Distilled water is pumped through a distilled water jet ejector. The impure water jet ejector withdraws water from the bottom of the evaporator. The distilled water jet ejector withdraws water vapor from the top of the evaporator. Distilled water from the distilled water jet ejector passes through a heat exchanger in the impure water tank to heat input water. Impure water from the impure water jet ejector passes through a heat exchanger in the distilled water tank to cool the distilled water.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: May 3, 1983
    Inventor: Gerald P. Dietrick
  • Patent number: 4347385
    Abstract: Sulfur compounds are separated from aqueous mixtures containing same by employing a stripper having at least two stripping sections with at least a portion of the stripper kettle product being recycled to the lower stripping section. The process is particularly effective in recovering mercaptans from steam condensate. In the production of mercaptans by reacting hydrogen sulfide with olefins, steam condensate contaminated with mercaptans is obtained from the steam ejector employed in the product fractionation column.
    Type: Grant
    Filed: April 14, 1981
    Date of Patent: August 31, 1982
    Assignee: Phillips Petroleum Company
    Inventor: Jack S. Scoggin
  • Patent number: 4341599
    Abstract: Apparatus usable to heat fluid comprises:(a) a steam vessel having an inlet for water and an outlet for steam,(b) heating means associated with the vessel to heat water received therein and produce steam, and(c) a condenser connected with the vessel outlet to receive steam, the condenser adapted to extend in heat transfer relation with the fluid to heat that fluid in response to condensation of steam in said condenser, the condenser having a condensate outlet, and(d) other means to remove solid particles from the vessel.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: July 27, 1982
    Inventors: W. Keith R. Watson, Knoxie C. DeLise
  • Patent number: 4319964
    Abstract: A method and apparatus for high volume distillation of impure liquid comprises evaporating the impure liquid in an evaporator to form a vapor at a temperature above the freezing point and below the boiling point of said liquid at atmospheric pressure and at a pressure not exceeding a pressure corresponding to the evaporation temperature under saturated conditions; compressing the vapor; passing a portion of the compressed vapor through an expansion engine to do work upon and motivate the engine and to produce shaft energy, whereby the vapor expands and cools; bypassing the expansion engine with the remainder of the compressed vapor and admixing the remainder directly with the expanded vapor from the expansion engine in a mixing chamber; adding work to the expansion engine to supplement the work done by the vapor expanding therethrough to make up for work lost when the remainder of the compressed vapor bypassed the expansion engine and for other work lost; cooling the admixed vapor in heat transfer relation wi
    Type: Grant
    Filed: August 10, 1979
    Date of Patent: March 16, 1982
    Inventors: Jerome Katz, Sidney J. Fogel
  • Patent number: 4292140
    Abstract: In a distillation process, the heats of distillates and bottom product are recovered to preheat the feed and to generate the steam of higher than 5 kg/cm.sup.2 G which in turn may be utilized to improve the distillation efficiency.
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: September 29, 1981
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Idemitsu Kosan Company Limited
    Inventors: Hiroaki Kawasaki, Shigeharu Akashi
  • Patent number: 4282067
    Abstract: A method and closed system for high volume distillation of impure liquids comprises evaporating the impure liquid in an evaporator to form a vapor at a temperature above the freezing point and below the critical point, preferably the boiling point, of the liquid at ambient pressure and at a pressure not exceeding a pressure corresponding to the evaporation temperature under saturated conditions; compressing the vapor in compression means which preferably has a compression ratio variable in the range 1.
    Type: Grant
    Filed: August 10, 1979
    Date of Patent: August 4, 1981
    Inventors: Jerome Katz, Sidney J. Fogel
  • Patent number: 4282070
    Abstract: A mechanical energy conversion method and system for the restoration of dissipated heat energy, contained in natural or artificial water bodies at or near ambient temperatures, to industrial process heat, mainly in the form of steam up to 200.degree.-400.degree. C. The sensible heat contained in a water body is concentrated as latent heat in low pressure water vapor which is thermo-compressed by steam ejection to an intermediate pressure level, wherefrom mechanical compression takes over, generating highly superheated output steam. The ejecting steam is not generated in a boiler, but is continuously regenerated by the compressor and routed back for repeated ejection. The compressor is driven by a heat engine whose reject heat is collected and upgraded as well. The output of heat energy is essentially equal to the sum of the heating value of the fuel consumed and the intake of latent heat and amounts thus to substantially more than the heating value of the fuel alone.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: August 4, 1981
    Inventor: Dan Egosi
  • Patent number: 4269664
    Abstract: Liquid treating apparatus especially useful for water purification, including an output section and an input section interconnected at their tops by a closed condensation chamber. The input section includes raw liquid supply and return columns, opening at their bottoms into a raw liquid supply open to the atmosphere, and the output section includes treated liquid supply and return columns open at their bottoms into a treated liquid container also open to the atmosphere.Treated liquid is cooled and circulated in the output section to produce and maintain negative pressure at one end of the condensation chamber, and raw water in mixed liquid and vapor form is supplied by aspiration in the input section, the vapor phase passing through the condensation chamber, and the liquid phase being used to drive the pump which causes the circulation in the output section. Several embodiments of the invention are shown.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: May 26, 1981
    Inventor: Philip G. Younger
  • Patent number: 4259160
    Abstract: A vapor compression distiller having a shell for enclosing a pair of heat exchange tube bundles each having one end connected to a steam chest and its other end connected to a condensate collecting chamber. A vapor compressor has its inlet connected to the shell and the outlet to one steam chest which is coupled to a second steam chest through a steam ejector for elevating the inlet pressure to the second heat exchange tube bundle. A half partition extends across the lower end of the vessel and between the wells to divide the lower portion of the vessel into two sections which are in communication across the upper end of the vessel. One well is connected to receive fresh feed liquid and the other includes a density sensor to discharge a portion of the concentrate to therein maintain a desired concentrate level and each well is connected to a spray nozzle manifold disposed in its respective shell section.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: March 31, 1981
    Assignee: Aqua-Chem, Inc.
    Inventor: Thomas W. McClure