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4775450 |
Electrochemical dehalogenation of organic compounds
A process for dehalogenating halogenated organic compounds comprising: (1) combining in an electrochemical cell (a)(i) a halogenated organic compound or (ii) a solid or fluid containing a...
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4765257 |
Apparatus and method for waste disposal
Apparatus for and method of thermally decomposing wastes laden typically with organic solvents, other organic liquids and soluble organic materials, by first extracting such wastes in a pressure...
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4762074 |
Process for the incineration of combustible materials
A process and plant for improving the incineration of fuels, in order to reduce the production of noxious gases, particularly nitrogen oxides (NO X ) and also to reduce the emission of dioxines and...
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4753181 |
Incineration process
A coincineration process whereby sewage sludge or other toxic liquid chemical waste is incinerated with a supplemental fuel such as municipal refuse, coal, sawdust, tire chips and the like involves...
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4748292 |
Method for removing polyhalogenated hydrocarbons from non-polar organic solvent solutions
A method is provided for reducing the level of polychlorinated aromatic hydrocarbons dissolved in an organic solvent which avoids the accumulation of sticky residues on the equipment utilized.
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4745226 |
Reaction of sulfur with polychlorinated polyphenyls
Polychlorinated polyphenyl materials are reacted with sulfur in the presence of an effective amount of a sulfur chloride compound to result in a product having a lowered residue of chlorinated...
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4735784 |
Method of treating fluoride contaminated wastes
A process for treating solid substantially non-volatile wastes contaminated with a heat sensitive contaminant is disclosed. The wastes are heated to form a liquid slag. The liquid slag is held at...
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4702804 |
Methods for electrochemical reduction of halogenated organic compounds
A process for the electrochemical destruction of halogenated organic compounds provides for the reduction of such compounds to levels below 1 ppm with carbonaceous cathodes which are principally...
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4700638 |
Method and apparatus for soil detoxification
A method and apparatus for detoxifying soil particles containing low melting point mineral compounds contaminated with combustible toxic materials wherein the soil particles are located without...
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4699667 |
Removing residual PCB S from transformers
Disclosed is a method and apparatus for removing residual polychlorinated biphenyls from transformers. A vaporized solvent which forms a low-boiling azeotrope with polychlorinated biphenyls is...
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4695448 |
Reduction and disposal of toxic waste
Toxic compounds, entrained in water, are dissociated in an electric arc (e.g. 12000° F.) in an airtight chamber charged with oxygen; metal ions (M + ) resulting from dissociation are recombined as...
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4690810 |
Disposal process for contaminated chlorosilanes
Method for treatment of contaminated chlorosilanes with lime to obtain an environmentally inept silica base product.
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4685220 |
Method and apparatus for separating dioxin from fluidizable solids
A process and apparatus for treating any fluidizable solid material having a dioxin contaminant absorbed or adsorbed thereon. The method and apparatus includes heating the fluidizable solids, using...
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4681072 |
Method and apparatus for disposal of toxic wastes by combustion
A method and apparatus for disposing of toxic waste materials by combustion in a modified piston type internal combustion engine is disclosed. The engine contains a combustion chamber which is...
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4675464 |
Chemical destruction of halogenated aliphatic hydrocarbons
Method for the total dehydrohalogenation of halogenated compounds. The method includes providing a reaction mixture by dissolving an alkali metal hydroxide in a molar excess of an ethylene glycol...
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4666696 |
Destruction of nerve gases and other cholinesterase inhibitors by molten metal reduction
Cholinesterase inhibiting agents such as nerve gas agents and pesticide agents are destroyed by reaction with molten aluminum and the gaseous products are analyzed and recycled if they are not...
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4659443 |
Halogenated aromatic compound removal and destruction process
Disclosed is a process for removing a halogenated aromatic compound (eg. a polychlorinated biphenyl or PCB) from a liquid carrier (eg. a transformer oil) contaminated therewith and for...
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4655932 |
Method and apparatus for the disintegration and destruction of hazardous and toxic sludge materials
There is disclosed a novel apparatus and process for the complete dewatering of sludge containing hazardous and toxic materials, the stabilization of pathogens and microorganisms contained in the...
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4654203 |
Process for the chemical thermodecomposition of higher halogenated hydrocarbons
A halohydrocarbon is destroyed chemical-thermally by reacting at 600° to 800° C. with calcium oxide and/or calcium hydroxide. The process can be carried out problem-free by having the calcium...
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4644877 |
Plasma pyrolysis waste destruction
A method and apparatus are disclosed for the pyrolytic destruction of toxic or hazardous waste materials using equipment that is compact and transportable. The waste materials are fed into a plasma...
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4632690 |
Hazardous waste removal method and apparatus
A method and apparatus for the high temperature destruction by pyrolysis and incineration of organic and inorganic gaseous, liquid, and solid toxic and hazardous compounds. The apparatus has a...
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4631183 |
Process for the destruction of toxic organic products
There is disclosed a process for the destruction of toxic organic halogenated substances which comprises treating in a reaction chamber under a reductive atmosphere and at a temperature of from...
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4623448 |
Removing halogenated polyphenyl materials from used oil products
A method and an apparatus are provided for removing halogenated polyphenyl materials from used or waste oil supplies. Waste or used lube stock is subjected to rerefining procedures in order to...
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4623464 |
Removal of dioxins, PCB's and other halogenated organic compounds from wastewater
Combinations of physicochemical and biological treatment processes are capable of removing dioxins, polychlorobiphenyls (PCB's) and other halogenated organic compounds from wastewaters. The dioxins...
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4618686 |
Process for dehalogenation of aryl and alpha-araliphatic halides
Process for the dehalogenation of aryl and alpha-araliphatic halides comprising contacting the aryl halide or alpha-araliphatic halide with hypophosphite salt, in the presence of a catalytic amount...
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4615283 |
Apparatus and method for disposal of hazardous waste material
A waste disposal system for the combustion of waste materials, that may include toxic chemical waste, wherein the wastes are combusted in a combustion unit with combustion gases directly discharged...
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4615285 |
Method of destroying hazardous wastes
The invention relates to a method of destroying hazardous waste, by means of under-stoichiometric incineration at a temperature of at least 1200° C., the ratio between injected waste material and...
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4614643 |
Process for treating liquid chlorinated hydrocarbon wastes containing iron
Ferric chloride contained in liquid waste streams comprising higher boiling chlorinated hydrocarbons may be substantially reduced by contacting the waste stream with an amount of water sufficient...
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4612404 |
Process for treatment of fluids contaminated with polychlorinated biphenyls
Polychlorinated biphenyls present as contaminants in fluids such as petroleum distillates are effectively removed by reacting with sodium or potassium hydroxide in the presence of or through...
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4602574 |
Destruction of toxic organic chemicals
Toxic chemicals such as polychlorinated biphenyls and other organic wastes are destroyed by injecting them, together with oxygen, into a metal or slag bath such as is utilized in a steelmaking...
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4601817 |
Treatment of hazardous materials
Process for removing chlorinated hydrocarbons such as ethylene dibromide and PCBs from a material containing the same such as a fuel, hazardous waste material, fuel containing a hazardous waste...
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4587116 |
Process for treating chlorinated nitrogen-containing hydrocarbons
A process is described for reacting chlorinated, nitrogen-containing hydrocarbons with metal oxides so as to convert essentially all of the carbon atoms to oxides of carbon. This process provides...
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4585533 |
Removal of halogen from polyhalogenated compounds by electrolysis
A method for electrochemically removing halogen from a halogenated compound utilizing an electrically conducting liquid medium in an electrolytic cell is disclosed. Halogen is extracted and reacted...
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4582613 |
Use of copper (II) oxide as source of oxygen for oxidation reactions
This invention comprises a wet oxidation process utilizing copper (II) oxide as the sole oxygen source. In particular the destruction and detoxification by oxidation of toxic materials such as...
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4582004 |
Electric arc heater process and apparatus for the decomposition of hazardous materials
This invention relates to an electric arc heater process and apparatus for the essentially complete decomposition of hazardous materials including polychlorinated biphenyls. Finely divided liquid...
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4574714 |
Destruction of toxic chemicals
Toxic chemicals such as polychlorinated biphenyls and other organic wastes are destroyed, optionally together with inorganic wastes, by injecting them, together with oxygen, into a molten bath such...
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4574013 |
Method for decontaminating soil
Halogenated contaminants are removed from soil by reaction schemes which are carried out in a slurry of the soil and a reagent mixture. The latter is made up of an alkaline constituent--an alkali...
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4568271 |
Method and shaft furnace for gasifying waste liquids containing organic components
A waste liquid is dripped down into a shaft chamber 1 of a shaft furnace 2 t the bottom of which chamber is a rotating conical grate 3 on which is an incandescent bed of carbon-rich material 6 than...
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4561969 |
Method for removing chlorine compounds from hydrocarbon mixtures
A process for removing halide ions from a hydrocarbon feedstream containing halogenated hydrocarbons wherein the contaminated feedstock is contacted with a solution of a suitable oxidizing acid...
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4553488 |
Procedure and furnace to incinerate waste materials without producing smoke
Procedure to obtain incineration of waste material without producing smoke; it consists in causing carbonization, distillation and combustion of the material to be destroyed by the effect of the...
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4549528 |
Method and apparatus for solar destruction of toxic and hazardous materials
Toxic and hazardous organic materials are photochemically and thermally changed into innocuous and environmentally acceptable products through the proper application of solar energy. The present...
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4541907 |
Process for decomposing chlorinated hydrocarbon compounds
A process for decomposing chlorinated hydrocarbon compounds wherein the compounds are heated to an elevated temperature of about 800° to 1200° C. and reacted with alumina and a reactive carbon...
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4532028 |
Method for reducing content of halogenated aromatics in hydrocarbon solutions
The level of halogenated aromatics is reduced in a hydrocarbon stream by treatment with an alkaline reactant in a sulfoxide solvent.
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4526677 |
Removal of polyhalogenated biphenyls from organic liquids
Polyhalogenated biphenyls such as PCB's, contained in transformer or capacitor oils, are removed from the transformer or capacitor oils by means of a combustible adsorbent which selectively adsorbs...
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4520741 |
Waste disposal
Burning a waste fuel blend at very high temperatures (typically greater than 4000 deg. F.) for a very short period of time (typically a matter of milliseconds) in a primary combustion zone to break...
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4508040 |
Method and plant for conversion of waste material to stable final products
The invention relates to a method and plant for converting waste material containing and/or comprising thermally disintegratable chemical substances to stable final products such as CO 2 , H 2 O...
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4497782 |
Method for destroying toxic organic chemical products
A method for destroying toxic organic chemical products. The method is particularly adapted for the destruction of polyhalogenated polyphenyls, especially polychlorinated biphenyls (PCBs). The...
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T104901 |
Destruction of organic hazardous waste by partial oxidation/gasification
Process for the thermal destruction of hazardous organic wastes utilizing high temperatures (2200° -3000° F.), long retention times (1.5-4 seconds), and high pressures (300+psi) in a reactor...
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4481891 |
Apparatus for rendering PCB virulence-free
A method and apparatus for rendering PCB virulence-free is provided. The PCB to be treated is pre-heated with exhaust heat before it is introduced into a combustion furnace to facilitate the...
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4479443 |
Method and apparatus for thermal decomposition of stable compounds
A method and apparatus for thermal decomposition of stable substances, preferably chemical hazardous waste. The invention achieves a high decomposition temperature by giving the waste the necessary...
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