|
Match
|
Document |
Document Title |
|
|
7579103 |
Filter material for generating oxygen and/or hydrogen from a source
A filter material for generating oxygen and/or hydrogen gas from water having a porous boron doped carbon film with diRuthenium/diRuthenium molecules and at least one fluorine ion in direct contact...
|
|
|
7361276 |
Apparatus and method for osmotic membrane distillation
A method of enhancing the concentration of a first inorganic compound in a first aqueous solution of a first process of a heavy chemical plant, the method comprising (a) feeding the first solution...
|
|
|
7182851 |
Electrolytic commercial production of hydrogen from hydrocarbon compounds
This invention concerns the commercial production of electrolytic hydrogen from coal and other hydrocarbon compounds. The process provides high capacity and low impedance compared to conventional...
|
|
|
7014679 |
Process for degassing an aqueous plating solution
A process for removing oxygen from a copper plating solution is provided. The solution is passed through a degasser comprising a shell and hollow hydrophobic fiber porous membranes wherein the...
|
|
|
7001085 |
Method and system for processing of photographic materials
A method of processing photographic material includes the steps of processing the photographic material in a processing solution, monitoring the concentration of a process-retarding by-product of...
|
|
|
6939611 |
Window glass employing titanium dioxide photocatalyst
A titanium dioxide film ( 2 ) having at least photocatalytic activity, whose light linear transmittance corresponding to light having a wavelength of 550 nm is not less than 50% and whose thickness...
|
|
|
6835295 |
Electrowinning cell incorporating metal ion filtration apparatus
An apparatus and method for electrowinning metal from ionic solutions is provided wherein ionic solution is subject to nanofiltration. An electrowinning cell ( 10 ) includes a reservoir ( 12 )...
|
|
|
6805787 |
Method and system for generating hypochlorite
In a method for producing sodium hypochlorite, brine solution is piped from the brine tank to a first inlet in a first electrolyzer cell of an electrolyzer assembly while simultaneously piping...
|
|
|
6685819 |
System and method for removing a solution phase metal from process liquor
A galvanic cell system ( 50 ) in fluid communication with a dewatering system ( 40 ) of an inhibited oxidation scrubber ( 20 ) removes an oxidation catalyst, i.e., solution phase iron ( 98 ), from...
|
|
|
6679984 |
Method for recovery of gold and silver
An apparatus and method utilizing a strip solution for removing gold from the loaded activated carbon used to accumulate such gold leached from gold bearing ore, and for electrically removing such...
|
|
|
6652725 |
Electrodeposition apparatus for producing electrodeposited copper foil and electrodeposited copper foil produced by the apparatus
An object of the invention is to provide a method for continuously producing electrodeposited copper foil while thiourea-decomposed products remaining in copper electrolyte are removed through...
|
|
|
6641712 |
Process for the recovery of tin, tin alloys or lead alloys from printed circuit boards
A method for selective dissolution of tin and/or lead- or tin-containing alloys from printed circuit boards is provided comprising contacting a printed circuit board with a solution comprising...
|
|
|
6607649 |
Process of preventing stray currents in peripheral parts of a plant in an electrolysis
An electrolyte line extends from the outlet of an electrolysis device to a collecting tank and from the same back to the inlet of the electrolysis device. The electrolyte is passed from the outlet...
|
|
|
6491807 |
Process for producing sodium persulfate
An electrolytic production of sodium persulfate in a decreased number of steps with low unit power cost is described. Sodium persulfate is caused to crystallize by the reaction between an anode...
|
|
|
6423203 |
Method for the integration of fuel cells into electrochemical plants
The invention describes a method for the direct connection of fuel cells to electrolyzers of electrochemical plants producing hydrogen as a by-product. The by-product hydrogen is fed to the fuel...
|
|
|
6146518 |
Pressure differential control in an electrolytic cell
An improved process for providing hydrogen from an electrolytic cell having an anolyte solution having an anolyte liquid level; a catholyte solution having a catholyte liquid level; generating...
|
|
|
6056865 |
Dry chemical reprocessing method and dry chemical reprocessing apparatus for spent nuclear fuel
In a dry chemical reprocessing method, uranium type elements are electrolytically refined continuously. Molten cadmium in which these uranium type elements are dissolved is transferred to a...
|
|
|
5976346 |
Membrane hydration in electrochemical conversion of anhydrous hydrogen halide to halogen gas
The present invention relates to an electrochemical cell, system and process for converting essentially anhydrous hydrogen halide to essentially dry halogen gas. The process of the present...
|
|
|
5951842 |
Process for monitoring the electrolyte circulation in an electrolysis cell
A process for monitoring the electrolyte circulation in an electrolysis cell, in which an electrolyte flow generated by a circulation pump is generated between the electrodes of the electrolysis...
|
|
|
5925322 |
Fuel cell or a partial oxidation reactor or a heat engine and an oxygen-enriching device and method therefor
The present invention relates to a combined cycle system of enhanced efficiency. The system comprises a top stage, such as a fuel cell, a partial oxidation reactor or a heat engine, and an...
|
|
|
5906722 |
Method of converting amine hydrohalide into free amine
Describes a method of electrochemically converting amine hydrohalide, e.g., ethyleneamine hydrochloride, into free amine, e.g., free ethyleneamine. A three compartment electrolytic cell is provided...
|
|
|
5891318 |
Production of ethylene dichloride by direct chlorination and production of vinyl chloride monomer using chlorine recycle and apparatus
A process and a system uses a direct chlorination reactor for producing ethylene dichloride by direct chlorination, without the need for an oxychlorination unit. This ethylene dichloride may be...
|
|
|
5833831 |
Method and system for generating electrolyzed water
In a method for generating electrolyzed water, pre-electrolyzed solution is added in water to be electrolyzed at least at the beginning of electrolyzing processing.
|
|
|
5643437 |
Co-generation of ammonium persulfate anodically and alkaline hydrogen peroxide cathodically with cathode products ratio control
An electrolytic cell and process for the cogeneration of a peroxy acid and salts thereof in an anolyte compartment of the cell and hydrogen peroxide at a desired ratio of an alkali metal hydroxide...
|
|
|
5589052 |
Method for electrolyzing water
A method and apparatus for water electrolysis is described, using an electrolytic cell comprising an anode compartment, a cathode compartment, and a diaphragm separating the anode and cathode...
|
|
|
5545389 |
Process for the production of chlorine dioxide
A process for the production of chlorine dioxide by reacting at least one of chloric acid and an alkali metal chlorate, and hydrogen peroxide as the reducing agent in such proportions that chlorine...
|
|
|
5294307 |
Integrated process for the production of alkali and alkaline earth metal chlorates and chlorine dioxide
An integrated process for the production of alkali or alkaline earth metal chlorates and chlorine dioxide in which the chromium compound impurities in the alkali or alkaline earth metal chlorate...
|
|
|
5292406 |
Process for electrolytic production of alkali metal chlorate and auxiliary chemicals
The present invention relates to a process to limit the content of impurities in the production of alkali metal chlorate, by integrating the production of chlorate with the production of chlorine...
|
|
|
5277768 |
Membrane cell washing
Scale is removed from within cation-exchange membranes by operating the cathode compartment of a cell divided by the cation-exchange membrane with a mildly-acid catholyte while effecting transfer...
|
|
|
5264089 |
Production of chlorine dioxide employing chloric acid - alkali metal chlorate mixtures
A continuous process for producing chlorine dioxide which comprises feeding an aqueous solution of an alkali metal chlorate to a first ion exchange compartment of an electrolytic cell having an...
|
|
|
5198080 |
Electrochemical processing of aqueous solutions
The formation of sodium sulfate by-product in sulfuric acid-based chlorine dioxide generating processes is decreased and preferably eliminated entirely, by effecting electrochemical treatment of...
|
|
|
5164050 |
Method of obtaining uranium from oxide using a chloride process
A method of obtaining uranium metal from an oxidized uranium compound, characterized in that the oxidized compound is treated with chlorine and carbon at a first stage, to obtain a chloride which...
|
|
|
4976832 |
Method for making arsenic acid
An arsenate solution is treated by electrolysis with membranes for at least partial conversion into arsenic acid and hydroxide. Electrolysis is carried out in an electrolytic unit containing an...
|
|
|
4925639 |
Removal of nitric oxide from waste gases and recovery as nitric acid
A process is provided for removing nitric oxide from effluent vent or flue gas by subjecting the gas cyclically to scrubbing with a nitric acid stream and to electrolysis of the resulting nitric...
|
|
|
4544462 |
Process for removing metal surface oxide
The present invention provides a process for removing a metal surface oxide from a metallic substance by contacting the metal surface oxide layer with a deterging liquid to introduce electrons into...
|
|
|
4519881 |
Regeneration of alkaline treating agents
A process is disclosed for electrolysis of a spent caustic solution in a three-compartment cell to produce alkali metal hydroxide, hydrogen and hydrogen sulfide. The hydrogen sulfide is oxidized to...
|
|
|
4488945 |
Process for producing hypochlorite
In a process for the electrolysis of sea water to produce hypochlorite in at least one electrolysis cell equipped with anodes and cathodes forming interelectrodic spaces, the improvement comprising...
|
|
|
4459187 |
Process for storing and producing power by storage of alkali metals produced electrolytically
A process for recovering power is disclosed, by which excess electric power is exploited for electrolyzing alkali metal hydroxides (molten) and the thusly obtained pure alkali metals are stored....
|
|
|
4406760 |
Electrolytic process for treating sulfuric acid streams
An improved process is provided for treating spent sulfuric acid streams formed in the catalytic hydration of olefins to prepare alcohols, wherein the spent acid stream containing organo-sulfonic...
|
|
|
4370208 |
Electrolytic process of an aqueous alkali metal halide solution and electrolytic cell
An electrolytic process is provided for the electrolysis of an aqueous alkali metal halide solution, which comprises effecting the electrolysis in a cell being separated by a cation exchange...
|
|
|
4337126 |
Electrolysis of carbonates to produce hydroxides
The invention is directed to an electrolytic process for converting alkali metal carbonates to alkali metal hydroxides at high current efficiencies.
|
|
|
4318783 |
Process for the preparation of optionally substituted benzaldehyde dialkyl acetals
An electrochemical oxidation process of optionally substituted toluene dissolved in an alcohol in the presence of a conducting salt is described wherein the electrochemical oxidation is carried out...
|
|
|
4294815 |
Process of producing chlorine dioxide and, if desired, chlorine
A process for the production of chlorine dioxide by membrane electrolysis of aqueous sodium chloride, reaction of hydrogen and chlorine so-formed to form hydrogen chloride and reaction of the...
|
|
|
4169776 |
Method for recovery of metallic zinc from chlorine contaminated skimmings
A method and apparatus for recovery of elemental zinc from zinc scrap, typically skimmings, is disclosed. Zinc skimmings include chlorine as a zinc chloride contaminate. Chlorine liberation in zinc...
|
|
|
4067788 |
Electrochemical production of finely divided metal oxides, metal hydroxides and metals
In a method of production of finely divided metal oxides, metal hydroxides and metals, current is passed between an anode of a selected metal and an air electrode acting as the cathode in a cell...
|
|
|
4022673 |
Electrochemical production of 1,4-dihydro aromatic compounds
Aromatic hydrocarbon compounds are selectively reduced electrochemically to their 1,4-dihydro derivatives in an ammoniated solvent-electrolyte system under conditions selected to effect oxidation...
|
|
|
4003807 |
Electrochemical fluorination of ketones within the pores of an anode
Low molecular weight ketones are fluorinated by passing same into contact with an essentially anhydrous liquid hydrogen fluoride electrolyte within the pores of a porous anode.
|
|
|
3917520 |
Electrolysis cell system and process for generating hydrogen and oxygen
An electrolysis cell system includes a compact electrolysis cell comprising gas diffusion electrodes on each side of an aqueous electrolyte retaining matrix. A portion of the hydrogen gas produced...
|
|
|
3905884 |
Electrolysis cell system including recirculating product gas stream for cooling the cell
An electrolysis cell system includes a compact electrolysis cell comprising gas diffusion electrodes on each side of an aqueous electrolyte retaining matrix. A portion of the hydrogen gas produced...
|
|
|
3904494 |
Effluent gas recycling and recovery in electrolytic cells for production of aluminum from aluminum chloride
Recycle system for the recovery and reuse of the effluent gas and additional values emitted in production of aluminum by electrolysis of aluminum chloride.
|