baber/WOPTO huggingface dataset:
Patent CH-708016-A1 (CH)
Inventor: REETZ ULRICH
IPC: F24F13/24
Filed: 2013-04-25
Abstract: Die Erfindung betrifft ein Klimaelement. Auf einer Lochplatte (1), welche einen mit einem Stutzen zur Zufuhr von Kühlluft versehenen Kasten an einer Unterseite begrenzt, liegt ein nach zwei aufeinander senkrechten Richtungen gewelltes profiliertes Blech (5) auf, welches an über seine Fläche verteilten Verbindungsstellen (6) mit der Lochplatte (1) z.B. Ultraschall-verschweisst ist. Es ist höchstens 0,5 mm dick und mit über seine Fläche verteilten Mikroperforationen, z.B. Schlitzen von höchstens 0,3 mm Breite, versehen. Das Klimaelement weist eine hohe mechanische Stabilität und hervorragende Geräuschdämpfung auf. Bei einer anderen Ausführung ist ein Rohr zur Durchleitung einer Kühlflüssigkeit grösstenteils zwischen der Lochplatte und dem nach einer Richtung gewellten profilierten Blech geklemmt. An einen Deckel, der auf dem profilierten Blech aufliegt, schliesst eine Phasenübergangsschicht an, die ganz oder teilweise aus einem Phasenübergangsmaterial besteht.
Patent WO-9526874-A1 (WO)
Title: Verfahren zur bestimmung und verwendung der füllmengen von pressgut bei der fest-flüssigtrennung mit einer filterpresse
Inventor: HARTMANN EDUARD
IPC: B30B9/02
Filed: 1995-03-21
Abstract: Eine Bestimmung der Füllmengen von Pressgut (7) bei der Fest-Flüssigtrennung mit einer Filterkolbenpresse mit einem Presselement (6) für mehrere aufeinanderfolgende Pressvorgänge erfolgt mit Hilfe einer Betrachtung im Ausbeute/Leistungsdiagramm. Unter einer Voraussetzung über die Lage von verschiedenen Arbeitspunkten in diesem Diagramm verbindenden Charakteristiken und Zwischenschaltung eines fiktiven Arbeitspunktes lassen sich die Änderungen von Ausbeute und Leistung für jeden Pressvorgang und damit die zu verwendenden Nachfüllmengen so bestimmen, dass sich für die Fest-Flüssig-Trennvorgänge ein maximales Produkt von Ausbeute und Leistung bei Vorwahl freier Prozessgrössen ergibt. Das Verfahren bietet eine automatische Anpassung der Füllzeit an die Pressbarkeit der Ware. Damit wird ermöglicht, sehr unterschiedlich pressbares Gut (7) automatisch und ohne Sollwertvorgabe so zu füllen, dass in Bezug auf die Ausbeute und die Entsaftungsleistung einer Filterpresse ein optimales Verhalten erreicht wird.
Patent WO-2004028851-A1 (WO)
Title: Voiture electrique a alimentation autonome
Inventor: CAO QINGSHAN
IPC: B60L11/00
Filed: 2003-09-29
Abstract: L'invention concerne un véhicule électrique à alimentation autonome, un véhicule électrique et un générateur embarqué. Le véhicule électrique comporte une transmission, un train de roulement, un système de direction et de freinage fixé au châssis, une carrosserie et une installation électrique. Le centre de la roue présente deux cannelures attachées à la roue et portant des pneus de manière indépendante. Un mandrin actif traverse le centre de la roue et le manchon du mandrin d'activité est installé entre les roues sur l'enveloppe circulaire du centre de la roue. Sur l'extrémité interne du mandrin est monté le chanfrein à manche et sur l'extrémité externe un tableau de fixation d'arc à partir duquel est monté un amortisseur. Dans le centre de la roue est monté un générateur. L'axe du rotor est fixé sur un demi-essieu par un palier d'orientation. Le stator est fixé au centre de la roue. Un pendule est monté sur l'axe du rotor, dont l'extrémité a un chariot et est ajustée au chanfrein à manche. L'invention concerne la production et l'accumulation de l'électricité par gravité du véhicule et roulement des roues, ce qui fait fonctionner le moteur.
Patent WO-2004058697-A1 (WO)
Inventor: SUN ZHUANGRONG
IPC: C07C311/08
Filed: 2003-12-30
Abstract: The invention discloses 4-nitro-2-[(4'-methoxy)-phenoxy]-methane­sulfonanilide or the pharmaceutical acceptable salts or solvates or hydrates thereof, and their mixture with povidone, phospholipid or cyclodextrin, as well as their pharmaceutical use, particularly the use as a non-steroidal anti-inflammatory, analgetic agent.
Patent CU-22075-A1 (CU)
Inventor: FERNANDEZ MIRANDA JORGE
IPC: G01T1/04
Filed: 1987-09-23
Abstract: SE DESARROLLA UN SISTEMA DOSIMETRICO A PARTIR DE LA ADICION DE IONES                                CUPRICOS A LA SOLUCION DOSIMETRICA DE FRICKE. ESTE SISTEMA PERMITE CUBRIR                           EL RANGO DE DOSIS DE ABSORCION ENTRE 0,4 Y 1,5 KGY, ALCANZANDOSE UNA                                REPRODUCIBILIDAD MEJOR QUE UN 4% PARA SU CONFIABILIDAD DEL 95%. LOS                                 SISTEMAS QUIMICOS SON AMPLIAMENTE UTILIZADOS PARA EL CONTROL DOSIMETRICO EN                         DOSIMETRIA TECNOLOGICA O DE ALTAS DOSIS. LA UTILIZACION EN LA PRACTICA                              SOCIOECONOMICA DEL SISTEMA DOSIMETRICO FRICKE-CUPRICO INTRODUCIDO PARA EL                           CONTROL DE LA CALIDAD EN LOS PROCESOS DE IRRADIACION ESTA GARANTIZADA EN                            LAS FACILIDADES DISPONIBLES EN EL LABORATORIO TECNICO DE IRRADIACION.\!
Patent WO-0118386-A1 (WO)
Title: Kraftstoffeinspritzventil für brennkraftmaschinen
Inventor: BANTLE DIETMAR
IPC: F02M61/14
Filed: 2000-08-18
Abstract: Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Ventilkörper, der sich zum Brennraum hin unter Bildung eines Ringabsatzes (12) verjüngt und in einen bis in den Brennraum ragenden Ventilschaft (9) übergeht. Das Kraftstoffeinspritzventil ist in einer Aufnahmebohrung (6, 7) angeordnet, wobei sich der Durchmesser der Aufnahmebohrung (6, 7) zum Brennraum hin unter Bildung einer Anschlagfläche (8) verkleinert. In Einbaulage wird der Ringabsatz (12) unter Zwischenlage einer Dichtscheibe (15) an die Anschlagfläche (8) gepresst, wobei die Dichtscheibe (15) an der dem Ventilhaltekörper (5) zugewandten Seite einen umlaufenden oder wenigstens an einer Stelle unterbrochenen Ringsteg (16) aufweist, der den Ringabsatz (12) umgibt und der in eine an der Aussenmantelfläche des Ringabsatzes (12) ausgebildete Hinterschneidung eingreift und dadurch unverlierbar mit dem Ventilkörper verbunden ist.
Patent WO-0214024-A1 (WO)
Title: Hydraulisches oder pneumatisches montagegerät
Inventor: UDHOEFER ANDREAS
IPC: B23P21/00
Filed: 2001-08-15
Abstract: Die Erfindung betrifft ein hydraulisches oder pneumatisches Montagegerät mit elektronischer Mikroprozessor-Steuerung zur vorbereitenden Herstellung oder Vormontage von Rohr- oder Schlauchverbindungen, mit einer Hydraulik- oder Pneumatik-Antriebseinheit, einer Funktionsanzeige und einem Hydraulik- oder Pneumatikkolben mit einer Werkzeugaufnahme-Vorrichtung für die Einbringung unterschiedlicher Werkzeuge. Die Werkzeuge (11) sind entsprechend der zu bearbeitenden Werkstücke (14) auswählbar. Die Geräteparameter der Werkzeuge (11), denen jeweils bestimmte zu bearbeitende Werkstücke zugeordnet sind, sind der Mikroprozessorsteuerung des Montagegeräts zuführbar. Die Daten der Geräteparameter jedes Werkzeugs werden mittels Laserstrahlung oder elektromagnetischer Strahlung unter Verwendung jeweils einer Transpondervorrichtung der Steuervorrichtung übertragen.
Patent WO-03105557-A1 (WO)
Title: Verfahren zur vermessung der verzerrung einer flächen-positioniervorrichtung
Inventor: PRUEFER MARTIN
IPC: H05K13/00
Filed: 2003-06-02
Abstract: Die Erfindung schafft ein Verfahren zur Vermessung der Verzerrung einer Flächen-Positioniervorrichtung,
insbesondere einer für einen Bestückautomaten verwendeten Positioniervorrichtung.
Bei dem erfindungsgemäßen Verfahren wird mittels der Flächen-Positioniervorrichtung
eine Relativbewegung zwischen einer Kamera und einem Bestückfeld erzeugt.
Erfindungsgemäß werden nur lokale Verzerrungen an ausgewählten
Positionen gemessen, indem jeweils der vektorielle Abstand zwischen der Position
einer Referenzmarke 101, welche mittels der Kamera erfasst wird, und einer durch
den entsprechenden Verfahrweg der Positioniervorrichtung bestimmten Messposition
ermittelt wird. Die lokalen Verzerrungen an anderen Positionen werden durch
jeweils eine geeignete Superposition von gemessenen lokalen Verzerrungen
berechnet. Auf diese Weise kann die lokale Verzerrung über einen größeren
Bestückbereich durch eine relativ geringe Anzahl von gemessenen lokalen
Verzerrungen ohne Informationsverlust rekonstruiert werden. Bei der Rekonstruktion
der lokalen Verzerrung in dem gesamten Bestückbereich kann zur Reduktion
des Messrauschens eine Polynomapproximation verwendet werden.
Patent DE-1910480-A1 (DE)
Title: Fuel cell element with solid electrolyte
Inventor: H SCHICK JOSEF
IPC: H01M8/04119
Filed: 1969-03-01
Abstract: The preferred fuel gas is hydrogen and the oxygen containing gas or oxidant is especially air. The solid electrolyte is a gel composed of polymers formed from one or more monomers, capable of polymerization, in the presence of catalysts and/or accelearatos to aid such a process. Typically a polymer based on acrylamide is used. Details of such compounds and of the necessary additives are given.
Patent DE-1920963-A1 (DE)
Title: Stable plant protection materials
Inventor: GUENTER GOEZE DIPL-CHEM DR
IPC: B65D83/02
Filed: 1969-04-24
Abstract: Copper oxychloride (10-80 parts) are mixed with 8-hydroxyquinoline (10-80 parts in a dry powdered condition) preferably at 70-80 degrees C., preferably over 2-4 hrs. and the intimate mixing continued while the components are cooled to room temperature. The final mixture forms a stable fungicidal plant-protecting material and the preparation may advantageously be carried out in the presence of a catalyst (0.8-2%) such as ammonium alkali or alkaline earth carbonate, sulphate or phosphate. Alternatively, either copper oxychloride or 8-hydroxyquinoline is placed in the reaction vessel and the other components gradually added. In an example, to a mixture of copper oxychloride (200 kg.) and (NH4)2SO4 (20 gm.) 8-hydroxyquinoline (200 gm.) was added over a period of 2-3 hours, and the contents mixed for a further 6 hours. Tests using a fungicidal spray derived from this product (125 g./100 l.) gave good protection against leaf fall on vines.
Patent DE-1926764-A1 (DE)
Title: Preparation of 2-aryl-4,6-dihydroxy-1,3,5- - triazines
Inventor: HEINZ EILINGSFELD DR
IPC: C07D251/20
Filed: 1969-05-24
Abstract: A 2-aryl-4,6-diamino-1,3,5-triazine in conc. H2SO4 is treated with nitrosylsulphuric acid at 80-160 degrees C and the reaction mixture poured into water. In an example 2-phenyl-4,6-diamino-1,3,5-triazine in conc. H2SO4 was treated with nitrosylsulphuric acid in conc. H2SO4 at 140 degrees C, cooled to 70 degrees C and poured into ice-water to obtain an 88% yield of 2-phenyl-4,6-dihydroxy-1,3,5-triazine.
Patent DE-1964584-A1 (DE)
Title: Molten metal atomizing device
Inventor: S ULLMANN TERRY
IPC: B22F9/08
Filed: 1969-12-23
Abstract: Molten metal atomizing device... having an annular gas chamber with an annular discharge port surrounding the exit of a molten metal receiving nozzle. The chamber is constructed with a cross sectional area decreasing towards the discharge port (pref. the walls converge at 15 degrees) and has two or more tangential gas-inlets (pref. 180 degrees apart). A tornado-effect is thus created adjacent the exit of the nozzle molten metal being drawn into the spiral slip stream thereof, atomised and suspended for a sufficient time to permit collection of the atomised particles in the dry state. The apparatus is useful for producing dry metal powders directly from the molten state.
Patent DE-2006031-A1 (DE)
Title: Aluminium and chromium containing catalysts - for olefin polymerisation
IPC: B25B27/00
Filed: 1970-02-11
Abstract: Catalyst system for polymerisation of 2-10C 1-olefins It comprises an organo-aluminium compound Al(R2)3 (I) and a chromium compound ROCrO2OR' (II) and a support having a specific surface of 50-1000 m2/g (R and R' are each alkyl, cycloalkyl or aryl contg. up to 6C atoms; and R2 is 1-14C alkyl, cycloalkyl or aryl). The support pref. consists of microspheroidal silica. The catalyst gives very high yields of high mol. wt. polymers such as polyethylene.
Patent DE-2019637-A1 (DE)
Title: Thermocouples with increased efficiency
Inventor: HESSE JOACHIM DR RER NAT
IPC: H01L35/22
Filed: 1970-04-23
Abstract: The thermocouple is composed of semiconductor material with a p-type conducting arm of chromium disilicide and an n-type conducting arm of beta-iron disilicide. Pref. beta-iron disilicide is doped with Co and has the formula: Fe1-xCoXSi2, Pref. x = 0.03-0.07. Pref. x = 0.05. Pref. one of the thermocouple arms at the hot contact binding bridge consists of highly doped iron disilicide. Pref. one of the arms at the hot contact binding-bridge consists of chromium disilicide. Pref. the thermocouple is used in a gas-heated thermoelectric generator. Advantage lies in much increased efficiency.
Patent DE-2024261-A1 (DE)
Title: Granulated plastics injector - using air supply - which also closes injector during foaming
IPC: B29C44/44
Filed: 1970-05-19
Abstract: A device for feeding granular or pulverulent plastics, e.g. polystyrene, into a foaming mould consists of an injector (in the gas-dynamics sense) with an air-operated cylinder-piston which closes the injector mouthpiece during the foaming operation. The piston pref. has its rod slidably mounted in the injector mouthpiece, so that in the forward position its end is flush with the mould wall, closing the inlet; in the rear position, it permits flow of air from the cylinder into the injector, thus operating it.
Patent DE-2048330-A1 (DE)
Title: Textile detergent compsn - contains an n-alkylpropane1,3-diamine for softening during washing
IPC: C11D3/30
Filed: 1970-10-01
Abstract: Textiles are washed and flexibilised using a bath at 20-100 degrees C contg. (a) 0.2-1.5g/l of anionic sulphonate and/or sulphate surfactants, with 8-18C hydrophobic radicals, soaps (to prevent foaming); (b) 0.05-1.2g/l of an N-(10-24C pref. 12-18C) alkyl (from coconut, tallow oil) propane 1,3-diamine (not an urea complex) to impart suppleness where amt of (a) => (b); (c) 0.2-6.0 g/l of active additives contg. a decolourant and having an alkaline reaction; (d) 0-0.5 g/l of suspending agents, foam controllers, enzymes, brighteners and antimicrobic agents. Suppleness is imparted in the same operation as washing and this reduces cost.
Patent DE-2063757-A1 (DE)
Title: Cross cutter - for polyurethane foam panels with a scraper to clear the chip tray
IPC: B23D45/06
Filed: 1970-12-24
Abstract: The cutting tool projects through a transverse slit in the bench top and can be pushed to and fro along a guideway by means of a support and with the cutting tool path surrounded by a chip tray which discharges on both sides into a collection funnel, in which a scraper is arranged on the cutter support so that the statically charged chips to not remain stuck to the walls of the chip tray.
Patent DE-2101923-A1 (DE)
Title: Balltrotor stopcock of plastic with inter - nal seals
IPC: F16K5/06
Filed: 1971-01-15
Abstract: The pipe unions screw on to the housing and their inner ends have concave spherical sealing rings of graphite-loaded PTFE which bear on the spherical surface of the PVC ball rotor. The rings have annular grooves packed with silicone grease to act as lubricant and caulking material.
Patent DE-2103619-A1 (DE)
Title: "wet look" laminated matted webs
IPC: D04H3/14
Filed: 1971-01-26
Abstract: Wet-look matted fibre web has a continuous polyamide envelope whose sides have indentation which extend of from 50 to 98% of the web thickness into the interior of the web, there being 7.75 to 1 550 such indentations per sq. cm. Indentations have a cross-sectional area at their base of from 6.45 x 10-5 to 6.45 x 10-3 sq. cm. Envelope covers at least 90 and pref. 99% of the web which is made of polyamide fibres and the envelope wt. varies of from 5 to 50% of the matted fibres enclosed in the envelope.
Patent DE-2112015-A1 (DE)
Title: Transferring developed image on image carrier
Inventor: TANAKA HIROSHI
IPC: G03G15/11
Filed: 1971-03-12
Abstract: Process for transferring images developed with a liquid developer from an image carrier to a copying material comprises increasing the adhesivity of the toner forming the visible image by applying a corona discharge to the image carrier. Developer with low electric resistance may be used.
Patent DE-2125627-A1 (DE)
Title: Yarn treatment - passing round cooled rotating rod to give simultaneous crimping and stretching
IPC: D02G1/02
Filed: 1971-05-24
Abstract: Simultaneously crimping and stretching a synthetic yarn (3) by passing it round a rotating rod (4) which is cooled to 0-30 degrees C and orientated at 0-90 degrees to the line of yarn travel. The rod (4) rotates at a slower speed than that of the yarn (3). Allows the simultaneous stretching and crimping of synthetic yarns while passing through at high speeds. A brake (8) is fitted to the rod (4) to slow its speed to a maximum of 200 m/min. below the speed of yarn travel at the end of the stretching zone to impose the effect on the yarn passing through.
Patent DE-2128946-A1 (DE)
Title: Shaft kiln flame control - transmits light intensity via photoconductor within burner tube
IPC: F27B1/04
Filed: 1971-06-11
Abstract: Photomeric supervision and control of the flame and burner tube condition in regenerative kilns is made possible despite high calcining temps., or flame immersion by transmitting light intensity of the flame via a photoconductor installed within the burner tube. The photoconductor commences at a point just inside the burner orifice, to emerge from the burner tube outside the kiln shaft(s) where the light intensity is picked up the usual photo-electric equipment, which may include amplifier operated signalling and control appts. w.r.t. flame temp., and also indicate whether ignition has taken place. Alternatively, with the photoconductor within the burner tube arranged to commence at distance from the burner orifice, change in light intensity determines, whether the burner tube remains at its original length, or is scaling. Optical permeability of fibreglass photoconductors, available for temps. =400 degrees C remains unaffected because of the cooling effect of the cold combustible medium, or air flowing through the burner tube at high velocity, depending upon which shaft is ignited.
Patent DE-2143912-A1 (DE)
Title: Decoloration of scrap paper - by a flotation process using a low-foaming non-ionic wetting agent to reduce foam formation
Inventor: ASBECK ADOLF
IPC: D21C5/02
Filed: 1971-09-02
Abstract: The wetting agent comprises an adduct of 3-10 mol. ethylene oxide and 3-20 mol. propylene oxide per mol. of a higher 6-20C alkanol and/or a 6-12C alkyl phenol, having a turbidity pt. of 5-30 degrees C. The flotation is effected at above the turbidity pt. of the adduct, i.e. at 30-45 degrees C.
Patent DE-2154683-A1 (DE)
Title: Moisture and crystallisation water in calcium sulphate - dihydrate for gypsum prodn - by fast neutron exposure
Inventor: KUENKELE HORST
IPC: G01N23/09
Filed: 1971-11-03
Abstract: The degree of drying and dehydration of Ca sulphate dihydrate during processing in gypsum producing plants is controlled by application of nuclear methods i.e. the use of fast neutrons. The method has the advantage of extremely fast response permitting close control of processing parameters thereby ensuring a high quality product. It is used in the mfr. of gypsum and plaster.
Patent DE-2166805-A1 (DE)
Title: Conductive paints contg. silicate - polymer binders - and conducting particles, with improved ageing and temp. resistance
Inventor: REUTER FRANZ GOTTFRIED DIPL CH
IPC: H01B1/24
Filed: 1971-10-16
Abstract: Conductive paints consisting of electrically-conducting particles e.g. metals or carbon, with a binder of aq. plastics dispersion in an aq. silicate soln. Mfr. of heating films in which current is passed between two electrodes, dissipation of electrostatic charges, shielding against harmful high frequency electromagnetic radiation, etc. Elasticity and resistance to ageing of the conductive film are improved, as well as resistance to sudden temp. increases, e.g. from 20 degrees to 100 degrees C within 10 sec., on switching on. The binder pref. consists of Na and/or K silicate soln., with an age-resistant acrylic resin dispersion, pref. an anionic dispersion contg. an acrylate ester copolymer free from plasticisers and solvents. The conducting particles are pref. of noble metals, or other metals or substances coated with noble metals, esp. silvered Cu particles, or carbon, e.g. graphite or esp. carbon black.
Patent DE-2221809-A1 (DE)
Title: Transparent copy prodn - using thermocopying
Inventor: LAMMERS WERNER
IPC: G03F1/00
Filed: 1972-05-04
Abstract: In the production by thermocopying, of transparent copies for daylight projection, in which a clear uncoated transparent film of thermoplastic material partially softened by heat build-up at the normal copying temps, partic. polypropylene, thickness 0.04-0.20 mm is used generally as disclosed in DT 2021016. The film is inscribed with a type writer and the typed film is passed through the thermocopier. In particular, the film is inscribed via a coloured ribbon.
Patent DE-2227504-A1 (DE)
Title: Trans aminomethylcyclohexane carboxylic acid - antiplasmin agent
Inventor: TANI HIDEO
IPC: A61K31/19
Filed: 1972-06-06
Abstract: Cis-4-NH2CH2-cyclohexanecarboxylic acids opt. mixed wit trans-isomer is subjected to isomerisation with an acid catalyst in aq. soln. at at least 150 degrees C to give title cpd. (I) or its salt. Suitable acids are H2SO4, HCl, H3PO4 and HBr and are 33-330wt.% on material to be isomerised. (I) is recovered either by conversion to a salt e.g., with H2SO4 HI or sulphosalicylic acid or treatment with an anionic exchange resin.
Patent DE-2255468-A1 (DE)
Title: Polyamide foam prodn - with simultaneous polymn at controlled temp
Inventor: OKUYAMA TORU
IPC: C08G69/00
Filed: 1972-11-13
Abstract: Polyamide foams are produced by polymerising 1 mole lactam (e.g. caprolactam) in the presence of 28 x 10-3 - 2 x 10-1 mole basic catalyst (e.g. reaction product of Na and caprolactam), >=1 x 10-3 mole of an alkyl isocyanate (e.g. hexamethylene diisocyanate, xylylene diisocyanate, or hydrogenated 4,4'-diphenyl methane diisocyanate), and a blowing agent (chemical or volatile), the polymerisation and foaming being carried out at temp. > m.pt. of the lactam and  m.pt. of the polyamide.
Patent DE-2305795-A1 (DE)
Title: Warp leasing with stitching mechanism - for making warp leases with a chain stitch
Inventor: FLEISCHER SVEND SIGURD CHRISTI
IPC: D04B39/00
Filed: 1973-02-07
Abstract: An attachment with a drive set up traverses a warp sheet, so that a stitch is formed around each individual warp end. The machine consists of a latch needle, and moveable thread guide for locking stitch. Also there are fingers to part the warp ends so that only one at a time is stitched. The needle is below the warp sheet, the thread guide above.
Patent DE-2311434-A1 (DE)
Title: Tubular fabric impregnation process - with air pressed out before entering treatment fluid
Inventor: GAGEUR FRITZ
IPC: D06B3/10
Filed: 1973-03-08
Abstract: As the fabric is passed through squeeze rollers to press out any air, a jet directs a spray of treatment fluid at the gap between the rollers so that the fabric draws in the dyes-stuff or other fluid, proventing any air entering the fabric structure. Eliminates air from the material and prevents oxidn. Accelerated and intensified development is possible.
Patent DE-2317920-A1 (DE)
Title: Fresh water and sodium chloride recovery from sea water - by multi-step distn. and evaporation process
Inventor: SCHWEYER ALFRED DIPL ING
IPC: C02F1/00
Filed: 1973-04-10
Abstract: Multi-step distn. process for fresh water prodn. with simultaneous recovery of NaC1, or brines having concns. >11%, from sea-water or fresh water contg. salts which have similar compsn. or solubility properties as sea-water salts, is effected by (1) carrying out pre-concn. in evaporators in which water is evaporated directly onto the heating surface and (2) carrying out end-concn. and crystallisation in evaporators in which evaporation takes place outside the heating bodies and the temp. of hot steam is 82 degrees C on exceeding 11% of salt concn. in brines. Concentrate is heated in pre-heaters, enters into an expansion vessel, cools and part of liquid is evaporated. Process is economical, NaC1 recovery requires no additional staff and boiler scale formation is prevented.