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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7314002 | Densification system A densification system for shredding and densifying specification raw materials for use as an alternative fuel source. The densified specification raw materials formed by the inventive system are readily transportable to a fuel processing site where they may be used... | 01/01/2008 |
| 7252691 | Conversion of municipal solid waste to high fuel value A combustible pellet comprising municipal solid waste. The pellet has a water content of less than 10% by weight and a fuel value of at least 10,000 BTU. A process for the forming of a combustible pellet from municipal solid wastes, comprising the steps of removing ... | 08/07/2007 |
| 6846339 | Process for upgrading low rank carbonaceous material A process for upgrading brown coal is disclosed, including providing at least two converging surfaces defining a nip, wherein at least one of the surfaces is rollable in a direction toward the nip; feeding the brown coal to the nip where, by the rolling action of th... | 01/25/2005 |
| 6780210 | Process for forming a fuel product from paper mill sludge A process for making a fuel product from paper mill sludge including dewatering the paper mill sludge so as to have a solids content of greater than 7 percent by weight, mixing an oxide-containing chemical and molasses with the dewatered paper mill sludge, pressuriz... | 08/24/2004 |
| 6716259 | Artificial firelogs and firestarter chips and method and apparatus for manufacture thereof An artificial firelog and firestarter chip producing apparatus comprising a cutting assembly, a compression conveyor auger assembly and a die. The apparatus converts standard waxed corrugated cardboard boxes into artificial firelogs by first slicing cardboard sheets... | 04/06/2004 |
| 6692544 | Municipal waste briquetting system and method of filling land Mechanically and biologically stable briquettes and pellets are obtained from either municipal solid waste (MSW), Refuse Derived Fuel (RDF) or municipal sewage sludge and their combination for purposes of disposing said briquettes and pellets as fuel in w... | 02/17/2004 |
| 6641624 | Method of preparing a synthetic fuel from coal A method of preparing a synthetic fuel from coal comprising reacting the coal with a polymer composition comprising an aqueous solution or an aqueous emulsion of one or more reactive polymers, the reactive polymers selected from the group consisting of et... | 11/04/2003 |
| 6582486 | Solid combustible composition A solid combustible composition having an apparent density lower than 0.6 g/cm3 and comprising a first portion consisting of an urban solid waste, a second portion consisting of elastomeric material and a third portion consisting of non-elastom... | 06/24/2003 |
| 6524354 | Process for the production of low ash fuel The present invention describes a process for the production of low ash fuel using calcined petroleum coke by crushing and screening of calcined petroleum coke below 3 mm size, mixing the crushed and screened materials to achieve a bulk density in the ran... | 02/25/2003 |
| 6251147 | Artifical firelog and firestarter chip producing apparatus and method and products produced therefrom An artificial firelog and firestarter chip producing apparatus comprising a cutting assembly, a compression conveyor auger assembly and a die. The apparatus converts standard waxed corrugated cardboard boxes into artificial firelogs by first slicing cardb... | 06/26/2001 |
| 6217625 | Pelletized pulp A pelletized cellulosic pulp product is produced from a delignified and bleached paper pulp raw material that is useful as a combustion material. The size, shape, density and glazed outer surface of the pelletized product contributes to controlled combust... | 04/17/2001 |
| 6193768 | Particulate waste wood fuel, method for making particulate waste wood fuel, and a method for producing energy with particulate waste wood fuel A particulate waste wood fuel comprising wood particles comprising less than 20% water by weight and having a particle size distribution suitable for combustion of the particulate wood fuel in a particulate fossil fuel suspension furnace. A method for mak... | 02/27/2001 |
| 6165238 | Fuel pellet and method for its production An improved pelletized fuel consisting essentially of from about 70% to about 98% coal fines and from about 2% to about 30% waste thermoplastic polymeric material (plastic) and a method of producing the improved pelletized fines are disclosed. The plastic... | 12/26/2000 |
| 6152974 | Solid combustible composition A solid combustible composition having an apparent density lower than 0.6 g/cm3 and comprising a first portion consisting of an urban solid waste, a second portion consisting of elastomeric material and a third portion consisting of non-elastom... | 11/28/2000 |
| 5599360 | Method for the manufacture of char-containing articles A process for manufacturing charcoal and intermediate char-containing articles from paper and/or paperboard comprises forming an aqueous pulp of cellulose fibers from the paper or paperboard and blending the aqueous pulp with comminuted char in a dry or s... | 02/04/1997 |
| 5486217 | Cellulosic composition A cellulosic composition 42 is provided which may be used as a charcoal briquette replacement, germination medium, oil and animal excretion absorbent, or as a source of nourishment.... | 01/23/1996 |
| 5250080 | Process for manufacturing a solid fuel A process is disclosed for manufacturing solid fuel which includes the steps of mixing a biomass, a heavy hydrocarbon and a sorbent to form a hydrocarbon-biomass slurry, the biomass being characterized by a particle size and distribution of about 50% betw... | 10/05/1993 |
| 5071446 | Nuggets for heating and a method of making the same The invention discloses fuel nuggets with high heat value which is virtually dust-free, and a method of making the same. The nuggets are preferably made of scrap particleboard made of wood particles bonded together by a urea/formaldehyde adhesive. The scr... | 12/10/1991 |
| 5009672 | Process for recycling and reutilizing waste, in particular solid urban waste Process for recycling and recovering solid urban waste and the like, consisting in subjecting solid urban waste (SUW), after the removal of any ferromagnetic material present therein, to high-pressure compression inside a screening press or the like, so a... | 04/23/1991 |
| 4701184 | Upgrading solid fuels Process for treatment of brown coal which comprises subjecting the said coal to shearing forces to produce a plastic mass which is capable of conversion by subsequent compaction and drying into a fuel of increased density and enhanced calorific value, is ... | 10/20/1987 |
| 4596584 | Solid fuel and method of manufacture thereof A solid fuel consists of a mixture of one or more paper products and one or more oil products. Preferred mixtures one waste paper with fuel oil, waste oil, petroleum coke or refinery bottoms. A binding agent and/or an amount of water may be added to the a... | 06/24/1986 |
| 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 |
| 4537599 | Process for removing sulfur and ash from coal A process is disclosed for removing sulfur and ash, particularly clay and pyrite from coal particles having a mesh size of 30 or less. A slurry of coal particles is agitated in an ultrasonic mixer to separate the contaminants from the coal and weaken chem... | 08/27/1985 |
| 4508539 | Process for improving low quality coal A process for improving low quality coal is disclosed, comprising subjecting a crushed low quality coal to a press treatment and a heat treatment. The process of the invention permits the production of improved coal from low quality coal, said improved co... | 04/02/1985 |
| 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 |
| 4447245 | Methods of cleaning coal Methods of and apparatus for cleaning coal in which halogenated hydrocarbons are used as parting liquids. Various novel techniques, components, and combinations thereof are employed to maximize efficiency; to minimize costs and adverse environmental impac... | 05/08/1984 |
| 4445906 | Process for the treatment of the combustible portion of domestic waste for briquetting and apparatus therefor A method and apparatus for the treatment of the combustible portion of crushed domestic waste. The waste is pre-dried and separated from dense-medium material such as metal and glass prior to processing. A dried waste moisture level of about 8-10% is main... | 05/01/1984 |
| 4396396 | Deashing of coal by the oil agglomeration process A method of deashing coal wherein the coal is wetted with hydrocarbon liquid to form agglomerates and the hydrophilic agglomerates are then separated from a water and ash phase to yield deashed coal agglomerates. The hydrocarbon liquid is then recovered f... | 08/02/1983 |
| 4372749 | Method for the manufacturing of fuel briquettes A method for manufacturing fuel briquettes from selected components of garbage which are comminuted and combined with coal dust. The mixture of comminuted garbage and coal dust is compressed in a press so as to form a solid body. The proportion of coal du... | 02/08/1983 |
| 4297322 | Equipment for treating and resource recovery from solid waste Equipment and method for treating solid waste in which a non-oxidizing atmosphere is provided through which the shredded solid waste falls freely, unsupported and non-contacted, to prevent fusion of the plastics with each other, with other materials in th... | 10/27/1981 |
| 4255155 | Process for agglomerating coal This invention provides a method for reducing the amount of hydrocarbon oil required to form coal-oil agglomerates comprising the steps of (a) combining a first coal fraction comprising predominately coarse particles, and a second coal fraction comprising... | 03/10/1981 |
| 4248698 | Coal recovery process Agglomeration type processes for recovering coal in which calcium oxide is employed to bring about an effective separation of pyritic sulfur from the coal.... | 02/03/1981 |
| 4192652 | Process for preparing sulfur-containing coal or lignite for combustion having low SO2 emissions A process for preparing a coal or lignite fuel that contains sulfur for combustion wherein reduced amounts of sulfur-containing air contaminants are emitted from the combustion. In the disclosed process, the coal or lignite that contains sulfur is pulveri... | 03/11/1980 |
| 4158550 | Apparatus for producing blast furnace coal A method of producing blast furnace coke from bituminous coals, particularly coals having poor coking capacities in which the coal to be carbonized is ground, predried or preheated, mixed with binders, compressed or formed into briquets having small mecha... | 06/19/1979 |
| 4138226 | Process for preparing a suspension of particles in a hydrocarbon oil Coal particles suspended in water are agglomerated with a binder and the agglomerates are separated from the water and disintegrated in a liquid. Coarse coal particles are removed, ground, and returned for agglomeration.... | 02/06/1979 |
| 4128402 | Apparatus for compacting coal An apparatus for compacting coal in a pounding box to convert it into a cake usable in coke ovens has one or more punners which are each composed of an upright the lower end of which carries a pounding foot. At opposite sides of the respective upright are... | 12/05/1978 |
| 4120664 | Production of low-sulfur coal powder from the disintegration of coal Small lumps of coal are contacted in an upflow confined reactor with liquid SO2 and some recycled hydrocarbons at an elevated pressure to effect the disintegration of the coal to micro-sized dust particles and, preferably, the resulting coal du... | 10/17/1978 |
| 4093425 | Process for preparing coal briquettes for coke and apparatus for the process The present invention relates to a process for preparing coal briquettes which comprises pulverizing a starting coal mixture, incorporating therein a caking agent, kneading the resulting mixture and molding it and more particularly to a process for prepar... | 06/06/1978 |
| 4018571 | Treatment of solid fuels Low rank solid fuels are upgraded by heating a mixture of particulate fuel and water to a temperature between 300° F. and the critical temperature of water under a pressure sufficient to maintain substantially all of the water in liquid state, cooling th... | 04/19/1977 |
| 4015951 | Fuel pellets and method for making them from organic fibrous materials Pellets adapted to be burned in industrial applications are prepared by adjusting the particle size of organic fibrous material to not more than about 85% of the minimum dimension of the pellets to be produced, adjusting the moisture content of the fibrou... | 04/05/1977 |
