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| Number | Title | Issue Date |
| 7048831 | Anoxic reaction apparatus and process for obtaining an anoxic reaction therein The present application discloses a method and apparatus for purging oxygen from a sealed container interior and a purge substance used in such method. The method is exemplified herein in an improved batch process and apparatus for the thermal decomposition of hydro... | 05/23/2006 |
| 7029635 | System for treating material containing noxious components A system for treating a treatable material containing a noxious component, which comprises a mixer for mixing a treatment agent containing alkali material with the treatable material to form a mixture, at least one first heat treating furnace for producing a low oxy... | 04/18/2006 |
| 6669822 | Method for carbonizing wastes The present invention relates to a waste carbonization method which produces charcoal and/or activated carbon from solid wastes, such as wood waste, and renders produced gas completely harmless. Solid wastes B are exposed to gas generated in pyrolysis gas... | 12/30/2003 |
| 5505822 | Process and device for treating waste by direct contact A process for treating industrial and/or urban waste includes the steps of drying the waste; effecting thermolysis of the dried waste by direct contact with warm gases, and washing solids resulting from the thermolysis with water to effect dechlorination ... | 04/09/1996 |
| 5494864 | Resistive paste A resistive paste comprising (a) a mixture of a resistive material having a composition of Nbx La1-x B6-4x, wherein x is from 0.1 to 0.9 mol, and non-reducing glass frit, (b) at least one additive selected from the group c... | 02/27/1996 |
| 5478442 | Treatment of petroleum cokes with a puffing inhibitor in a rotary calciner A rotary hearth calciner for treating petroleum cokes with a puffing inhibitor has a horizontal or inwardly sloping hearth floor rotatable around a vertical axis for receiving particles of coke to be calcined and a central opening in the hearth floor for ... | 12/26/1995 |
| 5435813 | Wet bulk density control of fine aggregates Methods and compositions are provided for increasing packed bulk density of coal, whose surface moisture varies from 2 to 15 weight percent, to desired levels in the range of 45 to 50 lbs./cu.ft., and for controlling and maintaining the improved bulk dens... | 07/25/1995 |
| 5423951 | Process of continuously making coke of high density and strength Pieces of coke of high density and strength are made continuously from fine particles of bituminous or subbituminous or lignite coals or of mixtures thereof. The particles are generally oxygenated, mixed with water, compressed to squeeze out some of the w... | 06/13/1995 |
| 5360537 | Apparatus and method for retorting oil shale and like materials A continuously operable combustion-type retort apparatus includes an insulated retort. A preheater is preferably associated with the retort for preheating incoming material, and means are preferably provided for injecting acetic acid and steam into the in... | 11/01/1994 |
| 5302254 | Process and plant for the thermolysis of industrial and/or urban waste A plant for treating industrial and/or urban waste includes a stage for drying of the waste, followed by a stage for effecting thermolysis of the dried waste and a stage for effecting recovery of the solids and gases resulting from the thermolysis. Thermo... | 04/12/1994 |
| 5266184 | Process for increasing pitch yield from coal tar Described is a preferred process for obtaining an increased pitch yield from the distillation of crude coal tar material. The process includes treating a crude coal tar material by reaction with formaldehyde, followed by distillation of the coal tar to af... | 11/30/1993 |
| 5106390 | Gasification process using a multi-layer reaction bed, to destroy toxic material and produce synthesis gas An improve gasification system, in which synthesis gas is produced through the operation of a fuel gas production bed comprising an upper layer (66) of organic input material, typically in the form of pellets or briquettes of substantially uniform size an... | 04/21/1992 |
| 5009767 | Recycle of oily refinery wastes Petroleum refinery waste stream sludges are recycled by segregating the sludges according to their oil content. Sludges of high oil content are developed and then injected into a delayed coking unit during the coking phase so that they are converted to co... | 04/23/1991 |
| 4960440 | Process for reducing the quantity of undesired compounds in the generation of pyrolysis gas Process water is formed when pyrolysis gas obtained in the pyrolytic decomposition of a starting material is cooled. Due to its content of chemical compounds, it is very costly to dispose of or eliminate the process water. A process for reducing the quant... | 10/02/1990 |
| 4957596 | Process for producing coke In a process for producing a coke by carbonization of a starting coal, the improvement wherein a coal containing a bulk density improving agent composed of a high-molecular organic compound capable of forming a hydrous gel in the presence of moisture is u... | 09/18/1990 |
| 4875979 | Treatment of petroleum cokes to inhibit coke puffing A process for treating high sulfur petroleum coke to inhibit puffing is disclosed wherein particles of the petroleum coke are contacted, in the absence of a binder, with a compound containing an alkali or alkaline earth metal selected from the group consi... | 10/24/1989 |
| 4867848 | Process and apparatus for producing moulded coke in a vertical furnace which is at least partly electrically heated An apparatus and process for producing coke in a vertical furnace having an upper part for preheating and devolitalizing raw ovoids of coal, an electrically heated median part for carbonizing and coking the ovoids and a lower part for partially cooling th... | 09/19/1989 |
| 4747938 | Low temperature pyrolysis of coal or oil shale in the presence of calcium compounds A coal pyrolysis technique or process is described in which particulate coal is pyrolyzed in the presence of about 5 to 21 wt. % of a calcium compound selected from calcium oxide, calcined (hydrate) dolomite, or calcined calcium hydrate to produce a high ... | 05/31/1988 |
| 4683030 | Method for carbonizing cold-compacted briquettes Briquettes made from bituminous or sub-bituminous coal or peat are produced by grinding the coal, mixing it with a binder and compacting the mixture. They are then carbonized in a continuous process in a shaft oven. The coal may be predried and the finish... | 07/28/1987 |
| 4636318 | Chemical reformer A method and system of continually reforming sewage and other organic materials into liquid oils and gases by pyrolysis using the contained and entrained water in the inorganic and organic constituents of the sewage.... | 01/13/1987 |
| 4599161 | Retorting process with contaminant removal Hydrogen sulfide issuing from an oil shale retort is captured in an absorbent bed. When the bed is regenerated as with oxygen containing gas, the sulfur dioxide liberated is reintroduced into the retort for reaction with the spent shale.... | 07/08/1986 |
| 4597775 | Coking and gasification process An improved coking process for normally solid carbonaceous materials wherein the yield of liquid product from the coker is increased by adding ammonia or an ammonia precursor to the coker. The invention is particularly useful in a process wherein coal liq... | 07/01/1986 |
| 4559060 | Upgrading method of low-rank coal A upgrading method of low-rank coal containing higher ash and moisture contents into coal decreased in ash content and decreased in moisture content and heightened in heating value includes subjecting the low-rank coal to a low-temperature dry distillatio... | 12/17/1985 |
| 4552621 | Apparatus for thermal decomposition of polymeric materials An apparatus comprises a reaction chamber provided with a charging hole, a branch pipe for discharging a suspension, and a branch pipe for withdrawing a vapor-gas phase which branch pipe is communicated with a condenser. The apparatus further includes a h... | 11/12/1985 |
| 4535065 | Method for regeneration of moist powder adsorption agents In a method for regeneration of moist powder adsorption agent, the moist-charged adsorption agent is first fed into the lower area of a fluidized bed which is provided with an aeration and heat-carrying material; the agent then is fed upwardly through the... | 08/13/1985 |
| 4528069 | Solvent pretreatment of coal to improve coke strength An improved process for making metallurgical coke is provided which enables the use of coals that ordinarily do not yield coke of expected stability based on the rank of the coal. The comminuted coal is pretreated by contacting and reacting the coal with ... | 07/09/1985 |
| 4463210 | Production of chemical feedstock by the methanolysis of wood A process for the production of ethylene, benzene and carbon monoxide from particulated biomass such as wood by reaction with methane at a temperature of from 700° C. to 1200° C., at a pressure of from 20 psi to 100 psi for a period of from 0.2 to 10 se... | 07/31/1984 |
| 4461627 | Upgrading method of low-rank coal A coal is finely pulverized. The finely pulverized coal is subjected to dry distillation. A tar obtained by the dry distillation is added to an aqueous slurry together with the dry-distilled coal to effect the submerged granulation.... | 07/24/1984 |
| 4450046 | Method for increasing the wet bulk density of coking coals A method for increasing the wet bulk density of coking coal charges for code ovens which charges contain at least about 6 and as much as 13 weight percent moisture, to an optimum level of between about 47 and 50 pounds per cubic foot (753 to 801 kg per cu... | 05/22/1984 |
| 4419186 | Process for making strong metallurgical coke The strength and density of a metallurgical coke produced in a slot coke oven are both increased by replacing at least a part of the normal loose charge in the oven with compacted materials and fragments thereof made from a mixture of particularly sized p... | 12/06/1983 |
| 4412841 | Compacted carbonaceous shapes and process for making the same Compacted carbonaceous shapes are produced by mixing a particulate carbonaceous material with a binder, forming green shapes from the mixture, and heating the green shapes by induction heating or microwave heating or a combination thereof. The process is ... | 11/01/1983 |
| 4400262 | Fluid coking with the addition of polymetaphosphoric acid catalysts A fluid coking process is provided in which a polymetaphosphoric acid, a salt of a polymetaphosphoric acid or precursors thereof are present in the fluid coking zone.... | 08/23/1983 |
| 4396487 | Process for retorting oil shale and the like The production of oil by retorting shale and other hydrocarbonaceous and lignocellulosic solid materials is facilitated by retorting in the presence of steam and acetic acid.... | 08/02/1983 |
| 4372750 | O-Alkylated/O-acylated coal and coal bottoms Coal and coal bottoms characterized by having the hydrogens of substantially all of the hydroxyl and carboxyl groups, of the coal and coal bottoms replaced with C1 to C20 alkyl or acyl groups.... | 02/08/1983 |
| 4334980 | Non-puffing petroleum coke Very fine particle size iron oxide or calcium fluoride is dispersed in a high sulfur petroleum coker feedstock before delayed coking to produce a needle coke with low CTE and negligible puffing on heating to the temperature of graphitization.... | 06/15/1982 |
| 4312745 | Non-puffing petroleum coke Very fine particle size chromic oxide is dispersed in a high sulfur petroleum coker feedstock before or during delayed coking to produce a needle coke with low CTE and negligible puffing on heating to the temperature of graphitization.... | 01/26/1982 |
| 4304636 | Method for improving the bulk density and throughput characteristics of coking coal The bulk density and throughput characteristics of coking coal are improved by treating the coal with a surfactant and a combination of fuel oil and alcohol or of solid lubricant and water, the surfactant being soluble in, and increasing the spreading coe... | 12/08/1981 |
| 4303477 | Process for the pyrolysis of waste materials The emission of halogens and sulfur dioxide and the formation of water-soluble compounds of heavy metals are suppressed in the pyrolysis of waste in a carbonization zone at a temperature in the range from 300° to 600° C. by adding a fine-grained basic m... | 12/01/1981 |
| 4300994 | Method for producing coke Disclosed is a method for improving the caking properties of coals by use of quaternary base solutions. Caking properties of various coals can be upgraded for the production of metallurgical grade coke, preferably with a substantially reduced mineral matt... | 11/17/1981 |
| 4300995 | Oxygen-alkylation of carbonous material and products thereof Disclosed is a method for improving the properties of carbonous materials and products thereof by oxygen-alkylation. The carbonous material is treated with a quaternary base then heated to temperatures from about 100° C. to 400° C.... | 11/17/1981 |
