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| Number | Title | Issue Date |
| 7383766 | Coal dewatering system and method The invention relates to a coal dewatering system, method and apparatus. The dewatering system includes a preheater vessel (82) having a chamber (101) for heating coal, an inlet (84) to permit the passage of coal into the chamber (101), a... | 06/10/2008 |
| 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 |
| 6443077 | System for producing combustion ash of cellulose-containing wastes The system for producing combustion ash of cellulose-containing wastes, provided with a kneading device 3 for kneading cellulose-containing wastes with a prescribed amount of liquid fuel oil, a molding device 5 for molding said kneaded mixture, and a comb... | 09/03/2002 |
| 6375690 | Process for forming coal compacts and product thereof A process for forming durable, mechanically strong compacts from coal particulates without use of a binder is disclosed. The process involves applying a compressive stress to a particulate feed comprising substantially water-saturated coal particles while... | 04/23/2002 |
| 6214064 | Process for making a fuel product from coal fines and sewage sludge A process for making a fuel product including blending a sewage sludge with an acid, mixing an oxide-containing chemical with the blended sludge so as to cause a reaction which elevates a temperature of the sludge, pressurizing the mixed sludge to a press... | 04/10/2001 |
| 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 |
| 6156083 | Coal reclamation systems A method for recovering coal from a mixture containing fine particles of coal, the mixture including fine coal particles, water, and impurities, the method including feeding the mixture to a first liquid/solid separator that removes relatively large piece... | 12/05/2000 |
| 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 |
| 5912192 | Multi-layered solid combustible article and its manufacture A burnable article such as a fire log or a barbecue briquette is formed of a top fire-igniting layer, a middle fire-catching layer, and a body layer. The fire-igniting layer has a composition, in weight percent, of from about 47 to about 67 percent carbon... | 06/15/1999 |
| 5777890 | Control of moisture addition to bulk solids In a material handling system in which a chemical treatment and water are added to a bulk solid, a method and apparatus for minimizing the amount of moisture added to the bulk solid while effectively controlling dust in the system. A moisture analyzing me... | 07/07/1998 |
| 5743924 | Pelletized fuel composition and method of manufacture Disclosed is a pelletized fuel composition comprising coal fines in an amount of from 60% to 80% by weight, paper making sludge in an amount of from 10% to 30% by weight, and a shredded polymeric material in an amount of from 0.5% to 15% by weight. Surpri... | 04/28/1998 |
| 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 |
| 5352252 | Process for making fuel cubes from straw A process for making fuel cubes from straw includes the steps of drying and cutting the straw, adding lime to the straw and applying ammonia to the straw. The straw is then placed in a densification machine or cuber where solid bricks are formed. The ammo... | 10/04/1994 |
| 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 |
| 5221290 | Charcoal briquettes bound with an organic binder and a water-swellable clay and method A combustible carbonaceous briquette and method of making the briquette wherein a finely divided carbonaceous material is formed into a desired briquette shape under high pressure whereby carbonaceous particles are bound together by a pre-cooked mixture o... | 06/22/1993 |
| 5035721 | Method for beneficiation of low-rank coal A method is provided for removing moisture and improving the handling and storage characteristics or low-rank coal by demoisturizing the coal and rendering the coal surfaces hydrophobic, separating the fines and agglomerating the fines in a slurry.... | 07/30/1991 |
| 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 |
| 4702745 | Process for dewatering high moisture, porous organic solid A high moisture porous organic solid is dewatered by the steps of (1) heating the high moisture porous organic solid in a fluid medium having an elevated temperature and a high pressure, thereby reducing the moisture of the solid, (2) starting to compress... | 10/27/1987 |
| 4645513 | Process for modification of coal A process for upgrading the characteristics of moisture containing coal which comprises drying coal until the water content reaches substantially zero, rapidly heating the dried coal to a molding temperature of from 200° to 400° C. within a time of from... | 02/24/1987 |
| 4615711 | Sewage sludge fuel briquette The invention relates to a process, which is characterized by mixing sewage sludge with comminuted, dried autumn foliage or the solvent extraction residue thereof. It also relates to the use of the deformable and optionally dried material obtained as a fu... | 10/07/1986 |
| 4612017 | Pelletizing wood A process for pelletizing wood wherein the particulated wood is treated with a wax emulsion and lignosulfonate prior to pelleting is disclosed.... | 09/16/1986 |
| 4605421 | Process for the preparation of a carbonaceous-derived solid fuel product A method for producing carbonaceous-derived solid fuel products comprising subjecting a carbonaceous material to a temperature sufficient to remove a substantial portion of water inherent in said carbonaceous material, pyrolyzing at least a portion of the... | 08/12/1986 |
| 4602917 | Formcoke having modified bituminous binder Formcoke is produced by separately introducing feedstocks of calcined coal particles, bituminous binder and a carbohydrate, preferably an aqueous sugar, into a mixing zone. The resulting mixture is compacted into shapes, such as briquettes, which are then... | 07/29/1986 |
| 4561860 | Process and apparatus for production of refuse derived fuel Refuse derived fuel is produced by taking raw refuse, pulverizing it and n screening it to remove fines and oversize material, the screened residue being passed to an air classifier where the light fraction, rich in paper and plastics, is separated. This... | 12/31/1985 |
| 4552567 | Pressure roller apparatus for briquetting cut material of biological origin such as green crops, wood flakes or peat The rear end of a rotary drying drum (1) is provided with a peripheral channel (10) in which dried material to be briquetted, such as green crops, wood flakes or peat, is accumulated and carried along. The bottom of the channel (10) is formed by the inner... | 11/12/1985 |
| 4530700 | Method and apparatus for use in preparing biomass particles for fuel and for use as chemical feed stock Biomass is prepared for use as a fuel or chemical feed stock either by processing biomass to provide particles or by utilizing such particles that have been independently produced, in either case at a location remote from consuming sites. At a thus situat... | 07/23/1985 |
| 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 |
| 4363636 | Process to increase the effectiveness of bagasse as a source of energy The effectiveness of bagasse as a source of energy is increased by a flexible operation adapted to the power requirements, fuel storage requirements and other variables of a sugar mill operation. Part or all of a primary stream of bagasse from the sugar m... | 12/14/1982 |
| 4302209 | Lignite pellets and methods of agglomerating or pelletizing The specification discloses lignite pellets which are relatively hard, dust resistant, of generally uniform size and free from spontaneous ignition and general degradation. Also disclosed are methods for making such pellets which involve crushing as mined... | 11/24/1981 |
| 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 |
| 4289500 | Method of producing hot briquettes A method of producing hot briquettes in a plurality of stages comprises heating inert components which do not soften by direct heat exchange with hot carrier gases which are generated in a combustor to a temperature of about from 550° to 700° C. Thereaf... | 09/15/1981 |
| 4193206 | Processes for drying sewage sludge and filtering water A process for drying and granulating sewage sludge. Wet sewage sludge is dried in either a thermal drying zone or a mechanical dewatering zone comprising a cylindrical chamber having a porous wall and a centrally mounted rotating helical screw conveyor wh... | 03/18/1980 |
| 4127391 | Process for making coke from bituminous fines and fuels produced therefrom A process for agglomerating bituminous fines into a useful low-sulfur particulated fuel by subjecting the bituminous fines to an autoclaving treatment at a controlled elevated temperature and controlled high pressure for a period of time sufficient to con... | 11/28/1978 |
| 4126426 | Agglomerating coal slurry particles A process for preparing a solid load of coal from an aqueous slurry of coal particles by dividing the slurry into a first fraction containing relatively small particles and a second fraction containing relatively large particles, agglomerating the particl... | 11/21/1978 |
| 4097245 | Method for producing carbonaceous material Particulized coal is subjected to a series of processing operations to produce a formed coke product. Among the operations are a single stage heating process comprising both carbonizing and calcining operations or, alternatively, a heating process in whic... | 06/27/1978 |
| 4078902 | Coke briquette A coke briquette for use in iron foundries in which coke fines screened from coke being fed to the cupola are recycled into briquette form to be used in place of raw coke in the iron making process. A mix for making the briquettes employs an 80-10-10 perc... | 03/14/1978 |
| 4046518 | Solid fuel element and process of manufacturing Fine sawdust obtained from compressed wood is homogeneously blended with an equivalent amount of liquid wax at a sufficiently elevated temperature to release substantially all moisture from the sawdust and to induce molecular activity in the wax and sawdu... | 09/06/1977 |
| 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 |
| 3982052 | Method of treating wet coal granules A method and apparatus for drying wet coal granules or particles by introducing a liquid petroleum or coal derivative into the wet granular material, either before feeding into a dryer, or while it is fed, or at some point along the dryer cylinder embodyi... | 09/21/1976 |
