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| Number | Title | Issue Date |
| 7087171 | Method for selective recovery and dewatering sewage sludge by using sludge-coal-oil co-agglomeration Disclosed herein is a method for dewatering sewage sludge by using sludge-coal-oil co-agglomeration (“SOCA”) which comprises the steps of physically, chemically or biologically conditioning sludge to impart hydrophobicity and lipophilicity to the sludge (conditi... | 08/08/2006 |
| 6835218 | Fuel additive compositions A fuel additive composition comprising a sustained release component and an additive component, the additive component is effective to provide at least one benefit to a fuel when released into the fuel, the sustained release component is (1) a polymeric material, (2... | 12/28/2004 |
| 6626966 | Coal briquette and production thereof A method of producing coal briquette at a low energy cost by saving heating step or drying step for fine coal, which comprises adding and mixing from 1 to 10 mass parts of powdery starch to a coal having 15 mass % or more of water content and comprising 5... | 09/30/2003 |
| 6530966 | Coal binder compositions and methods Binder compositions for converting coal waste into fuel including a distillable petroleum hydrocarbon emulsified with a surfactant and water are provided. The invention also includes methods for making the binder compositions. The methods include blending... | 03/11/2003 |
| 6093224 | Long burning fire starter A long burning fire starter produced by mixing diatomaceous earth particles with wood pellets; soaking the particles and pellet mix in a liquid burning agent and, if desired, a dye and fragrance; coating the soaked mix with wax; and packaging the soaked a... | 07/25/2000 |
| 6086647 | Molasses/oil coal treatment fluid and method A composition and method for applying to a coal product for dust suppression, water repellency, and spontaneous combustion potential reduction. The composition includes molasses and a hydrocarbon-based solution, such as an oil-containing solution. The oil... | 07/11/2000 |
| 6017373 | Crackling artificial log An artificial firelog which contain 2% to about 6%w coriander seed added to create a crackling sound that mimics the sounds produced during the burning of natural logs. The random crackling sound continues for approximately the same time period... | 01/25/2000 |
| 5868804 | Artificial firelog with natural wood sound The artificial firelogs of this invention provide a natural visual and audible sensation so that the artificial firelogs have both a soothing flickering flame and a crackling or popping sound normally observed only with natural wood logs. The crackling ad... | 02/09/1999 |
| 5815946 | Method for dehydrating wet coal A process is described whereby wet coal may be dehydrated and inhibited against rehydration by immersing in a bath of molten paraffin hydrocarbon for a sufficient period of time to evaporate and expel inherent water from the coal. The hydrocarbon then inh... | 10/06/1998 |
| 5711766 | Wood fire starter having improved stacking properties A wax-based brick such as a wax and sawdust brick for starting fires in fireplaces and the like is shaped to reduce the area of contact between adjacent bricks in a stack to make the bricks easy to separate from the stack even when the wax has slightly me... | 01/27/1998 |
| 5587085 | Method for dewatering particles Fine particles are dewatered in an energy efficient process in which a non-polar liquid or a mixture of different hydrophobic liquids are used to displace the water from the particle surface. Thermodynamically, this process is spontaneous. The only energy... | 12/24/1996 |
| 5458786 | Method for dewatering fine coal Fine coals are dewatered in an energy efficient process in which a non-polar liquid or a mixture of different hydrophobic liquids are used to displace the water from the coal surface. This process works with higher rank coals that are naturally hydrophobi... | 10/17/1995 |
| 5256169 | Methods and compositions for dewatering and suppressing dust during processing of fine coal A process of dewatering and agglomerating fine coal. The process consists of treating an aqueous fine coal slurry with a chemical binding agent prior to filtration or drying. The preferred chemical binding agent is an emulsifiable process oil. The process... | 10/26/1993 |
| 5015366 | Process and apparatus for coal hydrogenation In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are prepared by agitation of the slurry at atmospheric pressur... | 05/14/1991 |
| 4969928 | Combined method for simultaneously dewatering and reconstituting finely divided carbonaceous material A finely-divided carbonaceous material is dewatered and reconstituted in a combined process by adding a binding agent directly into slurry of finely divided material and dewatering the material to form a cake or consolidated piece which can be hardened by... | 11/13/1990 |
| 4874393 | Method of producing fuel of relatively higher calorific value from low rank and oxidized coal Low-rank or oxidized coal is processed to produce fuel of relatively higher calorific value by conditioning a slurry of the coal with an electrolyte, and then agglomerating the carbonaceous portion of the coal using a coal derived agglomerating oil. Agglo... | 10/17/1989 |
| 4869727 | Production of hardened coal agglomerates A system for the production of hardened coal agglomerates comprising a first pump (P1) for pumping a coal-water slurry and a predetermined quantity of oil or other suitable hydrophobic liquid into an agitated mixing tank (1), a second pump (P2) for pumpin... | 09/26/1989 |
| 4830634 | Preparation of coal substitute of low ash and sulfur A process is taught for preparing a coal substitute of low ash level from a composite of coal, mineral matter and pyritic sulfur comprising comminuting the coal composite in an aqueous medium to a size range which promotes the liberation of the mineral ma... | 05/16/1989 |
| 4776859 | Process for beneficiating coal by means of selective agglomeration A process is disclosed for the beneficiation of coal by means of selective agglomeration, wherein an agglomerating blend is used, which is constituted by: one or more main agglomerating agent(s), selected from the light hydrocarbons having a boiling tempe... | 10/11/1988 |
| 4775391 | Fuel package An improved fuel package comprising fuel pieces, a combustible moisture proof container for holding the fuel pieces in a specific shape, and combustible binder/starter composition for binding together a large proportion of the fuel pieces into a stack wit... | 10/04/1988 |
| 4734206 | Method for separating coal particles from an aqueous slurry The invention relates, in one embodiment, to a method for separating coal particles from an aqueous slurry in which a multiple emulsion of oil in water is added to the aqueous slurry, the mixture is agitated to form agglomerates of coal particles, and the... | 03/29/1988 |
| 4501593 | Process for the production of agglomerated fuels In the pelletization of particles of carbonaceous material improvements in pellet strength are obtained by applying a first water soluble or swellable thermo-hardening binder and a second binder which is an emulsion of a heavy hydrocarbon in such a way th... | 02/26/1985 |
| 4415445 | Process for the agglomeration of solids Finely divided solids suspended in liquids (such as aqueous slurries of coal fines) are agglomerated by flowing those suspensions and a binding agent into a turbulent-flow agglomeration zone along with a slurry of seed pellets having sizes and proportions... | 11/15/1983 |
| 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 |
| 4358290 | Burning properties of fluid coke An improved solid fuel obtained by blending fluid coke with 2 to 20 wt. % of a heavy petroleum liquid.... | 11/09/1982 |
| 4355999 | Process for agglomerating coal This invention provides a method for reducing the amount of oil required to form coal-oil agglomerates comprising the steps of (a) forming a slurry of water and coal particles; (b) contacting the slurry with an amount of hydrocarbon oil to form coal-oil a... | 10/26/1982 |
| 4331446 | Synthetic coal log A method of making synthetic fireplace logs or the like and the logs so produced. Approximately 80-95% by weight of pulverized coal is mixed with 5-20% by weight of dry paraffin to form a heterogeneous mixture. The mixture is fed into a cylindrical log mo... | 05/25/1982 |
| 4330300 | Coal oil mixtures Coal/oil gels are prepared by grinding coal in crude petroleum or a petroleum fraction. The gels are thixotropic and can be transported by pipeline.... | 05/18/1982 |
| 4294584 | Dewatering of coal slurries A slurry of coal particles is dewatered by agglomerating the coal particles using a hydrocarbon binder at an elevated temperature to obtain coal pellets which are then heat treated. Gases released by the pellets during heat treatment may be heat exchanged... | 10/13/1981 |
| 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 |
| 4248697 | Oil agglomeration process In methods for producing agglomerate particles from aqueous slurries containing from about 10 to about 40 weight percent solids, the solids comprising finely divided carbonaceous solids and finely divided inorganic solids, by mixing the aqueous slurry wit... | 02/03/1981 |
| 4221570 | Method and apparatus for producing hardened carbonaceous agglomerates An improved method and apparatus for producing hardened carbonaceous agglomerates from a feedstock selected from the group consisting of finely divided coal solids, finely divided coal-derived solids and hydrocarbonaceous binders is disclosed.... | 09/09/1980 |