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WO/2000/003448A1 |
A method for the removal of sulfate ions from an electrolyte of an electrochemical reduction-oxidation system wherein said electrolyte comprises a halogen and in which the sulfate ions are a contaminant or interferant, which method compr...
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WO/2000/002821A1 |
The invention concerns a device for transforming at least a chemical structure in a fluid under pressure and at high temperature comprising a solvent and at least a salt, wherein said device comprises a vertical reactor (1), called 'rese...
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WO/1999/062828A1 |
A fluid management system (80) for use in water electrolysis systems for filtering the system water and recombining hydrogen and oxygen. The fluid management system (80) includes a phase separation tank (82) having a filter containing a ...
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WO/1999/061684A1 |
A cell frame (21) is for use in an electrochemical cell wherein the cell frame includes fluid communicating inserts (38) for providing process water to the electrochemical cell and to transport waste water and product from the cell. The ...
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WO/1999/057335A1 |
The present invention relates to a unique, compact hydrogen electrochemical system (1) which eliminates the need for explosion-proof equipment. This system (1) merely separates the electrical equipment (10) from the hydrogen source (30) ...
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WO/1999/056334A1 |
The invention describes a method for the direct connection of fuel cells to electrolyzers (2) of electrochemical plants producing hydrogen as a by-product. The by-product hydrogen is fed to the fuel cells and the electric energy thereby ...
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WO/1999/045160A1 |
The invention relates to a method for oxidating vanadium in materials which contain vanadium in an oxidation step lower than V, characterised in that electrochemical oxidation occurs at least partially in the form of anodic oxidation. Th...
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WO/1999/035704A1 |
A zinc alloy anode-based electrochemical cell, which generates gases and/or energy, is disclosed. The structure of the cell is such that a zinc alloy anode material (1) is the integral part of the housing and is in contact with an alkali...
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WO1998027012A9 |
The present invention pertains to the field of water processing and more precisely to that of water purification using electrical power. This invention relates to a method for the electro-chemical treatment of aqueous solutions as well a...
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WO/1999/026716A1 |
A valve (10) comprising a with a tubular valve housing (11) containing a hydraulic fluid guiding body (13) arranged between the body of the valve (12) with a hollow cone-shaped seat (26) and an area (21) of the valve housing (11) receivi...
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WO/1999/022037A1 |
The invention relates to a method for extracting non-ferrous metals, especially zinc, from raw materials containing metal by means of electrolysis using a technique which is known in itself. According to the inventive method, substances ...
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WO/1999/014402A1 |
The invention relates to an electrolysis device to carry out electrochemical processes, comprising at least one plate-like electrolysis cell with a housing . Said housing is provided with devices to feed the electrolysis current and elec...
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WO/1999/007919A1 |
A method of generating a gas commences by forming a solution in a reservoir. The solution is then fed through an electrolysis cell so as to liberate the gas from the solution. The mixture of the solution and gas discharged from the cell ...
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WO/1999/002761A1 |
An electrolysis device (1) has a number of membrane electrolytic cells (2) having each a membrane (4) provided on both sides with a contact layer. This device should be compact, suitable for relatively high hydrogen production rates and ...
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WO/1998/055670A1 |
The present invention discloses a new design of elements for ion exchange membrane electrolyzers. Making reference to the figure the structure of one side of the element (1) is shown. The two sides are made of two sheets cold-pressed in ...
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WO/1998/049369A1 |
The invention concerns a plant for manufacturing gas, in particular hydrogen and oxygen, by electrolysis, comprising a bipolar electrolyzer (1) connected to a power supply unit (2), hydrogen and oxygen reservoirs (3 and 4) provided with ...
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WO/1998/042893A1 |
The invention relates to an ultra-high purity gas generator system (10), such as a hydrogen gas generator system and method, which employs a direct current source to supply proportional electric current to a cathode in an electrolytic ce...
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WO/1998/035748A1 |
The process for recovering an organic hydroxide from waste solutions containing the organic hydroxide and impurities comprising: one (A1a-A1b), (A2) and (A3), (A1a) precipitating the hydroxide as a salt and (A1b) removing the salt and fo...
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WO/1998/030737A1 |
The invention concerns anti-corrosive apparatus covers, in particular covers for electrolytic cells, with an improved detachable wall-covering (2). The proposed covering (2), which can be detached more easily, is suitable in particular f...
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WO/1998/030736A1 |
The invention concerns an anti-corrosive wall-covering (1) for side walls (4) in apparatus for holding chlorine-containing process gases, in particular in electrolytic cells. The covering is detachable and is suitable in particular for u...
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WO/1998/024949A1 |
This invention concerns a process in which gases or gas mixtures are reacted in the presence of an ion-conductive liquid in an electro-chemical cell. The cell has at least one anode (2) and at least one cathode (3) to which an external e...
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WO/1998/023793A1 |
The invention relates to the field of electrochemical processing of aqueous solutions and the production of gases. Disclosed is an electrochemical plant with channels for collecting and distributing anolytes and catholytes. The increased...
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WO/1998/015675A1 |
The invention concerns an electrolysis apparatus for producing halogen gases from an aqueous alkaline halide solution with a plurality of plate-like electrolysis cells which are disposed adjacent one another in a stack, are in electrical...
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WO/1998/000582A2 |
The present invention relates to a process and an electrochemical cell which produces hydrogen gas and a fuel cell which is powered by the hydrogen gas. The electrochemical cell converts hydrogen halide, such as anhydrous or aqueous hydr...
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WO/1998/000584A1 |
The present invention relates to an electrochemical cell having split fluid and current feed. Specifically, the cathode or anode inlet and outlet fluid may be fed from both, rather than from just one end of the electrolyzer. Alternativel...
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WO/1997/047787A1 |
The invention relates to an electrochemical half-cell (1) comprising at least one electrode chamber (3, 15) for holding an electrolyte (100), a gas chamber (2) and at least one gas-diffusion electrode (14) separating the gas chamber (2) ...
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WO/1997/037767A1 |
The invention provides an apportioning system comprising a first apportioning chamber (19) having a first outlet (1413) and fillable with liquid to a first defined level (1412) such that if liquid is added to fill the first apportioning ...
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WO/1997/027347A1 |
An electrolytic system (10) and cell (12) for heating water as a liquid electrolyte containing a conductive salt in solution. The electrolytic cell (12) includes a non-conductive housing (14) having an inlet (54) and an outlet (56) and s...
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WO/1997/021627A1 |
The invention concerns a process for preparing siliceous alkali salt solutions, in particular those which are produced as the byproducts of different processes and hitherto, owing to the relatively high silicic acid content, could not be...
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WO/1997/015356A1 |
Electrochemically regenerated RuO4 (or corresponding oxides of Os, Ir, Rh) is used in the decomposition of matter, especially matter containing organic material. The method has particular advantage in dealing with compounds containing ch...
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WO/1997/013007A1 |
A fluid delivery device includes a gas generator (26) in which moisture (water) is involved in the gas generation reaction. An external gas chamber shell (1) is utilized to prevent or retard water loss. A flexible diaphragm (3) may be a ...
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WO/1997/005300A1 |
Describes adding an anolyte soluble amphoteric material, e.g., an aluminum compound, to the anolyte of a chlor-alkali diaphragm cell having a synthetic diaphragm during the start-up period of the cell to reduce the permeability of the di...
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WO/1996/034999A1 |
A chlorination system in which brine is converted to sodium hypochlorite by an electrolyser. Brine (1) fed to the electrolyser (3) is passed through a filter (2) which is capable of adsorbing bromine or hypobromous acid. Some of the sodi...
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WO/1996/034996A1 |
An electrode, electrochemical cell, and electrochemical processes are disclosed. The electrode (5) is a porous, multi-layered electrode which can have an element in flexible, strip form wound around a central, usually flat plate core (4)...
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WO/1996/035003A1 |
The invention relates to an electrochemical cell having an electrode with a catalyst layer and a gas diffusion layer. The cell also includes a mass flow field (30) for directing fluid to and away from the electrode. An additional gas dif...
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WO/1996/034997A1 |
The present invention relates to an electrochemical cell and a process for using a halogen halide and splitting a sulfate solution and producing a hydroxide solution, sulfuric acid and a halogen gas. In particular, the sulfate solution m...
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WO/1996/035001A1 |
The invention relates to an electrochemical cell which has an electrode (12, 20), a membrane (18) disposed in contact with one side of the electrode, and a resilient flow field (28, 30) disposed on the other side of the electrode. The re...
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WO/1996/035000A1 |
The invention relates to an electrochemical cell which has an electrode, a membrane disposed in contact with one side of the electrode and a mass flow field disposed on the other side of the electrode for directing fluid to and away from...
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WO/1996/035004A1 |
The invention relates to an electrochemical cell which has an electrode, which may be either an anode or a cathode, and a membrane disposed in contact with one side of the electrode. An anode current bus is disposed on the other side of ...
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WO/1996/030307A1 |
A halogen generator produces a halogen sanitizing agent to sanitize water in a spa or other water feature. A coaxial wall fitting desirably couples the halogen generator to the water feature. The halogen generator desirably includes a bi...
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WO/1995/032321A1 |
A method and apparatus for the control of an electrolytic cell comprising controlling the input current to the cell based on the sensed pressure and temperature variations in the cell, the current being in the form of variable pulses.
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WO/1995/027684A1 |
Treatment of liquid passing through a reactor which has at least one pair of electrodes. The liquid is subjected to direct current to provide any one of a number of effects, including chlorination treatment, direct disinfection or remova...
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WO/1995/023881A1 |
The present invention refers to an electrolyzer (100) and to the respective electrolysis process, said electrolyzer (100) being connectable to an electron accelerator (1). The flow of electrons accelerated by the latter cause an accentua...
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WO/1995/014797A1 |
A particular anode (14) comprising an electrochemically active material selected from the group comprising the oxides of the elements tin, germanium and lead and mixtures comprising at least one of the respective oxides of such elements ...
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WO/1995/014796A1 |
The invention relates to a process for electrochemically converting anhydrous hydrogen halide, such as hydrogen chloride, hydrogen fluoride, hydrogen bromide and hydrogen iodide, to essentially dry halogen gas, such as chlorine, fluorine...
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WO/1995/011326A1 |
An electrolytic cell (10) comprises an anode plate (12), a cathode plate (30) and a permeable membrane (20) interposed between the anode and cathode plate. An anode sealing gasket (14) is interposed between the anode plate and the permea...
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WO/1995/011078A1 |
A metering system (10) for metering liquid to be supplied to equipment which utilizes the liquid to generate a predetermined product includes a body member (12) which defines a chamber (14) therein, the body member (12) being mountable i...
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WO/1995/007374A1 |
The invention pertains to an electrolytic cell with an electrolyte, two or more partial electrodes and at least one counter-electrode that is antipolar thereto. A different potential is applied across each of the individual partial elect...
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WO/1995/003438A1 |
A method for electrolytically reducing carbon dioxide in a CO2-saturated aqueous saline solution with a neutral to slightly alkaline pH and in the presence of a copper or silver cathode, wherein the cathode is electrochemically activated...
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WO/1994/026956A1 |
The apparatus consists of one ore more electrolytic cells (1, 50) containing electrodes (6, 7; 51, 52) made out of metal foils perforated with a very large number of microscopical holes through which the electrolyte (8) is being sprayed ...
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