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5282935 Electrodialytic process for producing an alkali solution  
A bipolar water ionizing electrode and a process employing such an electrode in an electrodialytic cell are disclosed. The cell has a plurality of ion exchange compartments separated by cation...
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...
5256261 Membrane cell operation  
The voltage requirements of a membrane-divided cell are decreased by operating the cell with a catholyte temperature significantly in excess of the anolyte temperature, generally at least 10° C....
5250159 Bipolar membrane stack and method for producing acid and monovalent base from impure salt  
A method and bipolar membrane stack for the generation of acid and alkali metal base solutions from an impure salt by electrodialysis. The unit cells of the stack comprise a novel arrangement of...
5248397 Chlorine dioxide generation from chloric acid - alkali metal chlorate mixtures  
A process for producing chlorine dioxide is provided which reacts an aqueous solution of chloric acid and an alkali metal chlorate with a solution of a non-oxidizable acid in the presence of an...
5242552 System for electrolytically generating strong solutions by halogen oxyacids  
The present invention resides in a process and apparatus for the electrolytic production of strong solutions of halogen oxyacids, more specifically for the production of such acids having a...
5242554 Electrolytic production of chloric acid and sodium chlorate mixtures for the generation of chlorine dioxide  
An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment...
5223103 Electrochemical process for producing chloric acid-alkali metal chlorate mixtures  
A process for producing chlorine dioxide from an aqueous solution of chloric acid and alkali metal chlorate which is prouced in a electrolytic cell having an anode compartment, a cathode...
5158658 Electrochemical chlorine dioxide generator  
An electrochemical process and electrolytic cell for manufacturing chlorine-free chlorine dioxide from dilute alkali metal chlorite solutions in a single step is disclosed. The electrolytic cell...
5108560 Electrochemical process for production of chloric acid from hypochlorous acid  
A process for producing chloric acid in an electrolytic cell having an anode and a cathode which includes feeding an aqueous solution of hypochlorous acid to the electrolytic cell, and...
5106465 Electrochemical process for producing chlorine dioxide solutions from chlorites  
A process for electrolytically producing an aqueous solution of chlorine dioxide in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange...
5089095 Electrochemical process for producing chlorine dioxide from chloric acid  
A process for producing chlorine dioxide by oxidizing a hypochlorous acid solution to produce a chloric acid solution, and, electrolyzing the chloric acid solution to produce chlorine dioxide. The...
5084149 Electrolytic process for producing chlorine dioxide  
An electrochemical process and electrolytic cell for manufacturing chlorine-free chlorine dioxide from a dilute alkali metal chlorite solution in a single step is disclosed. The electrolytic cell...
5064514 Apparatus for the production of chloric acid  
An electrolytic filter press membrane cell and a method of operating the cell are disclosed to produce concentrated chloric acid. The cell employs concentrated hypochlorous acid as the anolyte and...
5041196 Electrochemical method for producing chlorine dioxide solutions  
An electrochemical process and electrolytic cell for manufacturing chlorine-free chlorine dioxide from dilute alkali metal chlorite solutions in a single step is disclosed. The electrolytic cell...
4915927 Production of chloric acid  
Chloric acid is produced in an electrolytic-electrodialytic process in which chlorate ions from a sodium chlorate solution are transferred through an anion-exchange membrane to combine with...
4853096 Production of chlorine dioxide in an electrolytic cell  
Chlorine dioxide is produced electrolytically in the cathode compartment of an electrolytic cell using a three-dimensional high surface-area cathode. The cathode compartment is separated from an...
4839004 Method and an apparatus for cold sterilization of surgical instruments, in particular dental surgery instruments  
The method and apparatus are designed to permit of sterilizing surgical instruments by inducing electrolysis in a water solution having pH-value of between 5 and 7.5 and a concentration of chloride...
4806219 Method of double decomposition of neutral salt  
Disclosed is a simple and convenient method by which a salt typified by sodium chloride, generally a neutral salt, is decomposed by using a three-compartment electrodialysis cell comprising a...
4806215 Combined process for production of chlorine dioxide and sodium hydroxide  
A hydrochloric acid-based chlorine dioxide generating process is integrated with an electrolytic process for sodium hydroxide production. Generator liquor in the form of a sodium chloride-enriched...
4798715 Producing chlorine dioxide from chlorate salt  
Chlorine dioxide is generated from chlorate salt and introduced into a treatment stream. Initially following dissolution of the salt in aqueous medium, the solution is subjected to ion exchange for...
4767510 Electrolytic protection of chlorine dioxide  
Chlorine dioxide is formed by an autocatalytic electrochemical process from highly acidic chlorate solution containing a residual concentration of chlorine dioxide. Cathodic current is applied to...
4749453 Method and apparatus for making hydrochloric acid and sodium hydroxide  
By combining the manufacture of sodium hydroxide and hydrochloric acid, and by using a fuel cell to optimize the energy consumption, the energy efficiency of the manufacture of NaOH and HCl can be...
4705610 Anodes containing iridium based amorphous metal alloys and use thereof as halogen electrodes  
Anodes comprising substrate materials coated with iridium based amorphous metal alloys having the formulae Ir i D d E e F f and Ir i Y y D d E e F f where Y is yttrium D is Ti, Zr,...
RE32398 Electrolytic process and electrolytic cell for the preparation of organic compounds  
There is described an electrolytic cell and a process for removing the halide or other anion from an organic salt having as general formula A+X--, wherein A+ is an organic cation and X-- is a...
4609442 Electrolysis of halide-containing solutions with amorphous metal alloys  
Amorphous metal alloys have the formula M 1 a M 2 b M 3 c where M 1 is Fe, Co, Ni, Pd and combination thereof; M 2 is Ti, Zr, Hf, V, Nb, Ta and combination thereof; M 3 is Rh, Os,...
4595469 Electrolytic process for production of gaseous hydrogen chloride and aqueous alkali metal hydroxide  
Disclosed is a process for the production of gaseous hydrogen chloride and aqueous alkali metal hydroxide from brine, utilizing an electrolytic cell containing a hydroxyl ion producing cathode and...
4560454 Electrolysis of halide-containing solutions with platinum based amorphous metal alloy anodes  
A process for the generation of halogens from halide-containing solutions includes the step of conducting electrolysis of the solutions in an electrolytic cell having a platinum based amorphous...
4560452 Unitary central cell element for depolarized, filter press electrolysis cells and process using said element  
Unitary, cast structural element for filter press depolarized electrolysis cell which incorporates into a single unit the central barrier between the peripheral boundaries for the adjacent anode...
4544459 Process for obtaining hydrogen and oxygen from water  
A process for obtaining hydrogen and oxygen from water in a two stage process including a first electrolysis stage performed in a two chamber cell wherein the chambers are separated by a membrane....
4542008 Electrochemical chlorine dioxide process  
A continuous process for the production of chlorine dioxide by the electrolysis of an aqueous solution of sodium chlorite is provided. The process comprises electrolyzing the aqueous sodium...
4496441 Desulfurization of coal  
A system for desulfurization of sulfur-containing coal comprises apparatus for comminuting sulfur-containing coal, a gas/solid reactor having an inlet and an outlet, a connection or conduit for...
4481087 Process for removing chromate from solution  
A process for removing dissolved chromium from a solution wherein said chromium is in the anion form which comprises contacting said solution with an adsorbent, comprising a hydrous oxide of iron...
4477322 Process for producing hydrogen chloride  
Disclosed is a gaseous diffusion anode and a process for the production of gaseous hydrogen chloride in an electrolytic cell.
4456510 Process for manufacturing chlorine dioxide  
Chlorine dioxide is produced by electrolysis of a solution of chlorite and by using a compact apparatus which provides continuously a uniform concentration of chlorine dioxide, which can be...
4426263 Method and electrocatalyst for making chlorine dioxide  
An electrocatalyst together with a heterogeneous electrocatalytic method for making chlorine dioxide from an acid and a metal chlorate solution. The catalyst generally comprises at least one of a...
4416744 Process of electrolytically producing oxyacids of chlorine  
This invention relates to a process of producing oxyacids of chlorine or salts of such acids by an electrolysis of salt solutions which are contaminated with calcium and/or magnesium or of sea...
4334968 Apparatus for generation of chlorine/chlorine dioxide mixtures  
An electrolytic generator is disclosed for use in treating water in swimming pools, baths, reservoirs, sewage, etc., and in bleaching chemical pulp. The generator is of the type consisting of two...
4280883 Method of operating a solid polymer electrolyte chlor-alkali cell  
Disclosed is a method of operating a solid polymer electrolyte chlor-alkali cell at an elevated pressure with the recovery of liquid chlorine and brine. The liquid chlorine and depleted brine are...
4255246 Electrolytic cell for chlorine production  
The present invention relates to a method and electrolytic cell for making hypochlorous acid (HClO) by electrolysis of an aqueous chloride solution circulating through a generally closed-loop...
4238302 Electrolytic process of recovering oxyacids of chlorine or salts thereof  
An improved process for recovering oxyacids of chlorine or salts of such acids by the electrolysis of sea water or of salt solutions contaminated by metal ions is disclosed wherein extensive...
4234403 Electrolytic process for the production of stannous chloride products  
A mixture of stannic and chloride ions having a chloride to tin ratio of at least 4:1 (e.g., stannic anion complexes) is provided to the cathode compartment of an electrolysis cell in which the...
4220505 Separation of hydrogen sulfide from fluid streams  
A liquid solution containing a tri-halide from the halogen group consisting of bromine and iodine is passed in countercurrent flow with fluids containing sulfur compounds, including hydrogen...
4203813 Method for producing HBr  
Method and apparatus are disclosed for producing oxygen and hydrogen bromide in an electrolytic cell utilizing, as the cathode, a consumable bromine electrode comprising bromide ions dissolved in a...
4147601 Electrolytic production of hydrobromic acid  
Disclosed is a method of producing aqueous bromide solutions. According to the disclosed method, bromine is electrolyzed in an aqueous catholyte and hydrogen bromide is formed.
4124453 Electrochemical processes  
A method of carrying out an electrochemical reaction comprises setting up a fluidized bed of particles at least some of which have at least their surfaces conducting or semi-conducting, using...
4105516 Method of electrolysis  
Disclosed is a method of electrolyzing alkali metal chloride brines by passing an electrical current from an anode in an aqueous alkali metal chloride anolyte liquor through a permeable barrier to...
4058441 Process for the regeneration of spent pickling solutions  
Regeneration of spent hydrochloric acid after use for pickling iron, which herefore contains iron chlorides, by electrolysis in the cathodic and intermediate compartments of an electrodialysis...
4053376 Electrolytic production of hydrogen iodide  
Disclosed is a method of producing aqueous iodide solutions. According to the disclosed method, iodine is electrolyzed in an aqueous catholyte and hydrogen iodide is formed.
4009104 Marine sanitation method and device  
Automatic marine sewage treatment through a pair of tanks with salt water based sewage fed to the first tank after removal of solids above a predetermined size. Circulation means responsive to...
Matches 51 - 100 out of 120 < 1 2 3 >