摘要:
The present invention is directed toward an electrolytic ozonier for treating ozone-containing waste gas and a method of treating ozone-containing waste gas using the ozonier, wherein the method includes evolving oxygen and ozone in an anode compartment of an electrolytic cell by electrolysis of water while evolving hydrogen in a cathode compartment; directing the evolved hydrogen into a waste gas treating section that contains a waste gas decomposition catalyst so as to convert the hydrogen to a harmless form by means of the catalyst; bringing the oxygen and ozone into contact with a medium to be treated in an ozone contactor so as to treat the medium; and subsequently directing waste gas containing oxygen and ozone produced as a result of treatment of the medium into the waste gas treating section where they are brought into either direct or indirect contact with the catalyst so that the ozone in the waste gas is converted into a harmless form.
摘要:
A method and apparatus for water treatment is described, using electrolytic zone, which comprises electrolyzing water to generate an ozone-containing gas in the anode compartment of an electrolytic cell, separating the ozone-containing gas from the anolyte, and contacting the separated ozone-containing gas with the water to be treated said water to be treated being different than the water for electrolysis.
摘要:
A bipolar-electrode electrolytic cell is disclosed, which is to be used in electrolysis of an electrolytic solution having a high electric resistance and including at least two diaphragms positioned to form a plurality of electrode compartments comprising two outer compartments defined between the side walls of the electrolytic cell and the diaphragms positioned closest to the cell walls having a single electrode and at least one electrode compartment having two same-polar electrodes on both sides thereof, each of said electrodes being placed on a diaphragm such that different-polar electrodes are positioned at opposing sides of the diaphragm, wherein the distance between same-polar electrodes within the same compartment is sufficiently large such that electrolysis therebetween does not substantially occur and wherein two of said electrodes at the terminal ends of the series connected electrolytic cell, an anode and a cathode, being further electrically connected to an anode collector and a cathode collector, respectively, and each of the remaining anode electrodes and cathode electrodes is further connected to a different-polar electrode, respectively, which face the same direction and are placed on adjacent diaphragms.
摘要:
A cathode assembly comprising a cathode, an ion-exchange membrane, and an electroconductive porous member permeable to gas and liquid sandwiched between the cathode and the membrane. The porous member may have, deposited on a part thereof, a catalyst active in hydrogen generation. The porous member preferably is in the form of a plate, sheet, fibers, web, paper, net, or sinter of any of these, and comprises at least a carbonaceous material and has a thickness of from 0.05 to 5 mm and a porosity of from 10 to 95%. Also disclosed is a method of reactivating a cathode assembly, which comprises conducting electrolysis using the cathode assembly until its activity decreases, and then depositing a catalyst active in hydrogen generation on the porous member.
摘要:
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 compartments, comprising the steps of electrolyzing water to evolve oxygen or an ozone-containing oxygen gas in the anode compartment and hydrogen in the cathode compartment, thereby resulting in a net transfer of electrolyte from the anode compartment to the cathode compartment through the diaphragm, and recycling electrolyte from the cathode compartment to the anode compartment.
摘要:
The present invention is directed toward an electrolytic cell for treating fluids with gases that are evolved by electrolysis comprising an anode compartment separated from a cathode compartment by a diaphragm, and a gas-permeable and liquid-impermeable window formed in the anode and the cathode compartment, or formed in the anode or the cathode compartment, wherein the window is formed such that a gas evolved in the anode or cathode compartment or gases evolved in these two compartments are allowed to pass through the window to make contact with a fluid to be treated, said fluid being located outside said electrolytic cell, thereby treating the fluid.
摘要:
An electrode catalyst comprising a lead dioxide electrically deposited layer, the layer having particles containing .beta.-lead dioxide powder dispersed therein, and a method for producing the electrode catalyst are disclosed. The particles contain .beta.-lead dioxide powder and optionally an electrolytic cocatalyst selected from PTFE, agar, gelatin, a perfluoro ion exchange resin and the like. The present electrode catalyst is useful for production of ozone by electrolysis of water and for production of peroxides by electrolysis of aqueous solutions.
摘要:
A cathode for electrolysis, particularly of a sodium chloride aqueous solution by an ion-exchange membrane method, and a process for producing the same, the cathode comprising a conductive base having a nickel surface and having provided thereon (a) at least one platinum group component selected from the group consisting of a platinum group metal, a platinum group metal oxide, and a platinum group metal hydroxide, and (b) at least one cerium component selected from the group consisting of cerium, cerium oxide, and cerium hydroxide, retaining a markedly reduced hydrogen overpotential for an extended period of time and exhibiting excellent resistance to impurities in the electrolytic solution.
摘要:
An electrolytic cell for electrolysis of sea water comprisinga housing having an opening at the bottom and top of the housing for in-flow of sea water and out-flow of electrolyzed sea water, respectively;a plurality of flat plate-like anodes vertically disposed in the housing with the major surface area of the anodes being parallel to the flow of sea water through the cell;a plurality of flat plate-like cathodes vertically disposed in the housing with the major surface area of the cathodes being parallel to the flow of sea water through the cell;an outwardly projecting portion for passing an electric current provided at the lower side edge of each of the anodes;an outwardly projecting portion for passing an electric current provided at the upper side edge of each of the cathodes;an electric current-passing plate secured to the lower portion of the housing and connected to the portions for passing an electric current to each of the anodes; andan electric current-passing plate secured to the upper portion of the housing and connected to the portions for passing an electric current to each of the cathodes; and whereinthe anodes and the cathodes are alternatingly disposed with respect to each other,the side edges of each of the anodes and the side edges of each of the cathodes, except for the portions for passing an electric current of each of the anodes and each of the cathodes, are spaced from the inner wall of the housing,and each of the flat plate-like cathodes and each of the flat plate-like anodes have an external contour such that the external contour of each of the flat plate-like cathodes, except for the portions for passing an electric current to each of the cathodes, is located inwardly of the external contour of each of the flat plate-like anodes.