Abstract: A process for manufacturing fluoroolefins comprising perfluorinating a starting material comprising at least one carbon-bonded hydrogen by electrochemical fluorination, dissociating this separated effluent in a pyrolysis, quenching and separating the effluent to yield tetrafluoroethylene and/or hexafluoropropylene.

Abstract: A process for manufacturing fluoroolefins comprising perfluorinating a starting material comprising at least one carbon-bonded hydrogen by electrochemical fluorination, dissociating this separated effluent in a pyrolysis, quenching and separating the effluent to yield tetrafluoroethylene and/or hexafluoropropylene.

Abstract: A process for manufacturing fluoroolefins comprising perfluorinating a starting material comprising at least one carbon-bonded hydrogen by electrochemical fluorination, dissociating this separated effluent in a pyrolysis, quenching and separating the effluent to yield tetrafluoroethylene and/or hexafluoropropylene.

Abstract: The present invention provides a catalytic process for preparing perfluoroethanesulfonyl fluoride and/or perfluorodiethylsulfone using a two-part catalytic process comprising a metal fluoride and a crown ether.

Abstract: An electrochemical cell for the production of fluorine includes an anode having a carbon portion partially or fully impregnated with a polymeric material and a conductive centrally disposed internal channel that permits the anode to be run at high current with uniform current densities without undue resistance heating.

Abstract: Carbon electrodes for use as an anode in electrochemical cells for the generation of fluorine by electrolysis of molten KF.2HF electrolyte. Also included is a process for the operation of an electrochemical fluorine cell in combination with a direct fluorination reactor.

Abstract: An apparatus for injecting a mixture of pure oxygen or oxygen-enriched air (at least 25 percent oxygen) and purge water into a wet oxidation reactor operating at elevated temperature and pressure. An annular space between the oxygen carrying pipe and a second, larger pipe is filled with heat transfer resisting material, either maintained static or passed through the annular space to remove heat therefrom. The temperature of the oxygen and purge water is maintained at less than 250.degree. F., preferably less than 150.degree. F. to minimize evaporation of the purge water. Thus, backflow of organic matter into the oxygen pipe is prevented; plugging of the oxygen pipe by salts is also prevented.

Abstract: A method comprising operating steps required for safely operating wet oxidation reactors in which combustible substances are oxidized at elevated temperatures and pressures using pure oxygen. The steps satisfy the criteria that a potential of oxidation is established prior to introducing oxygen and maintained until after oxygen flow is stopped; that an inert gas, either from an external source or generated in situ, is present in the reactor from before oxygen flow is introduced until after oxygen flow is stopped; and that the oxygen introducing means is clean for oxygen use from prior to the introduction of oxygen flow until after the oxygen flow is stopped.

Abstract: A process for treating thiosulfate containing liquors such as coke oven gas scrubbing liquors by first adding acid, preferably sulfuric acid, to convert thiosulfate to elemental sulfur and bisulfite, separating and removing the elemental sulfur, and subjecting the remaining liquor to wet oxidation.

Abstract: A continuous process for wet oxidation of aqueous liquor containing combustible matter using oxygen or oxygen enriched gas. An inert diluent gas is injected into the aqueous liquor or reactor off-gas such that oxygen in the gas phase is diluted by the sum of generated water vapor, produced carbon dioxide and injected inert gas to a concentration less than required for spontaneous combustion at every location in the system having surfaces not continually exposed to a continuous liquid water phase.

Abstract: A process and apparatus for treating thiosulfate containing liquors such as coke oven gas scrubbing liquors in two stages of wet oxidation with intermediate removal of elemental sulfur. Mild oxidation conditions in the first stage results in conversion of thiosulfate sulfur to elemental sulfur, which is removed prior to second stage wet oxidation of the liquors to substantially reduce the liquor oxygen demand.

Abstract: A safe method for mixing pure oxygen, or an oxygen enriched gas, at high pressure, with waste liquor in a wet oxidation system, such that intermittent drying conditions are avoided, thereby preventing possible spontaneous combustion, fire or explosion; comprising adding the oxygen to pure liquid water before it is mixed with the waste liquor.

Abstract: A cleaning and washing system for a reactor utilizing a by-pass, normally closed, to be opened while the normal flow of sludge is closed, for washing out unwanted solid particles in the reactor.

Abstract: A cleaning and washing system for a reactor utilizing a bypass, normally closed, to be opened while the normal flow of sludge is closed, for washing out unwanted solid particles in the reactor.