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| Number | Title | Issue Date |
| 7332002 | Low sulfur coal additive for improved furnace operation The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The... | 02/19/2008 |
| 7314572 | Methods of and apparatus for low-angle-tray settling with multi-zone configuration Settleable-particles are separated from a dirty flow of settleable-particles and fluid by trays having a planar section configured with opposed ends and opposed sides, and an entrance edge and an exit edge on opposed ends. The section has opposed side edges, and an ... | 01/01/2008 |
| 7285141 | Method and apparatus for fermentation A cement kiln from which its brick lining has been removed, or a rotary dryer for cement production is used as a fermentation treatment apparatus 202 for converting waste matter into compost. The waste matter to be subjected to the fermentation treatment incl... | 10/23/2007 |
| 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 |
| 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 |
| 7017371 | Method for producing a glass Glass produced on basis of a raw material in form of a mixture of mainly mineral-containing components comprising sludge from e.g. purification plants and waste products from the industry, and having a determined chemical composition adjusted on basis of knowledge o... | 03/28/2006 |
| 6908507 | Process and a plant for the production of Portland cement clinker A process is disclosed for producing cement clinker, comprising the steps of: a) providing a mixture of ground calcareous materials and ground argillaceous materials; b) heating the mixture of step a) to a temperature sufficient to calcine and fuse the ground materi... | 06/21/2005 |
| 6344638 | Method for the disinfection of medical waste in a continuous manner A method of processing medical waste which includes the steps of continuously feeding medical waste into a tube and heating the medical waste passing through the tube with electromagnetic radiation so as to heat and disinfect the medical waste.... | 02/05/2002 |
| 6149694 | Process for using animal waste as fuel A fuel product derived from waste products and processes for using and forming the products are provided. Broadly, the fuel product comprises a self-sustaining body formed from a homogenous mixture including solid components derived from livestock waste (... | 11/21/2000 |
| 6001143 | Method of forming chemically bonded agglomerates Thermally shock-resistant chemically bonded agglomerates suitable for use as a combustible fuel or in a gasification process are produced by: (a) mixing particulate organic material comprising particulate carbonaceous fuel and/or animal excrement (such as dewa... | 12/14/1999 |
| 5972058 | Method of treating waste sludge The invention relates to a waste sludge treatment process in which a solid additive is mixed into sludge to produce solid products. The solid additive includes aggregate-like hydrophobic grains of peat.... | 10/26/1999 |
| 5916826 | Pelletizing and briquetting of coal fines using binders produced by liquefaction of biomass A coal agglomerate is produced by the combination of coal fines with a binder obtained by the direct liquefaction of biomass material. The direct liquefaction is carried out in the absence of oxygen at typical temperatures between about 450 and 700° F. a... | 06/29/1999 |
| 5888256 | Managed composition of waste-derived fuel A waste-derived fuel is prepared to have a particular chemical composition, including ash content, ash composition and fuel value, and physical properties as required by a particular fuel user or burning process. The fuel is prepared by collecting differe... | 03/30/1999 |
| 5797972 | Sewage sludge disposal process and product Pellets or briquettes useful as fuel are produced from sewage sludge solids. Mechanically stable pellets or briquettes result from combining a major portion of sewage sludge solids with lesser amounts of lime and binder materials suitable for imparting st... | 08/25/1998 |
| 5718735 | Method of preparing a high heating value fuel product A method of preparing a high heating value fuel product having the steps of blending a hydrocarbon-containing material with a dried sewage sludge, mixing a monomeric polyalcohol to the blend of the hydrocarbon-containing material and the dried sewage slud... | 02/17/1998 |
| 5711768 | Sewage sludge disposal process and product Briquettes useful as fuel are produced from dehydrated sewage sludge containing 65 weight percent or more sewage sludge solids. The briquettes on a dry basis contain from about 50 to about 95 weight percent sewage sludge solids together with from about 3 ... | 01/27/1998 |
| 5431702 | Waste conversion process and products A process is disclosed for time production of fuel pellets or briquettes from sewage sludge solids and municipal solid waste with minimal drying requirements. In one of its more specific aspects, this invention relates to a solid pelleted or briquetted fu... | 07/11/1995 |
| 5389114 | Method of treating and using waste products A method of treating and using waste products and to products produced thereby is described. The method comprises agitating the sewage sludge mixture and waste products with a co-agent to bind the mixture in a mixing chamber (1) having paddles (2). The mi... | 02/14/1995 |
| 5269939 | Method of solids recovery for use in animal feed or as a fuel utilizing natural flocculents A waste stream such as from an animal or poultry processing plant is mixed with bentonite or Grafted Bentonite and then with liquid Chitosan as natural flocculents to form a rigid floc which removes fats, oils, greases, and/or proteins from the waste stre... | 12/14/1993 |
| 5242470 | Pelletizing coal or coke with starch particles Coal or other fine particles are pelletized by mixing relatively moist particles of them with fine particles of a waste product collected during grain transport and storage and extruding or pelletizing the mixture without extensive heating or steaming.... | 09/07/1993 |
| 5217625 | Process for disposing of sewage sludge A process for disposing of sanitary sewage sludge by producing a pumpable slurry of sewage sludge with or without solid carbonaceous fuel and burning said slurry as fuel in a partial oxidation gas generator, furnace, or boiler. First, an aqueous slurry of... | 06/08/1993 |
| 5125931 | Sewage sludge disposal process and apparatus This invention relates to a process for the production of fuel pellets or briquettes from sewage sludge solids. In one of its more specific aspects, this invention relates to a solid pelleted fuel product consisting essentially of sewage sludge solids and... | 06/30/1992 |
| 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 |
| 4552666 | Process for the treatment of sewage sludge 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... | 11/12/1985 |
| 4548615 | Process for manufacturing solid fuels from heavy hydrocarbon oils and vegetable materials A method for manufacturing a solid fuel composition by admixing vegetable organic material with an oil-in-water macro-emulsion and drying the resultant composition.... | 10/22/1985 |
| 4344847 | Process for obtaining energy, soft water and by-products from aqueous substances The aqueous substance, for example sea water, is boiled, the steam produced is fed under pressure into a turbo-alternator turbine producing electricity, the residual steam is reduced into soft water and the residue of evaporation, for example sea salt, is... | 08/17/1982 |
| 4152119 | Briquette comprising caking coal and municipal solid waste Briquettes of specified geometry and composition are produced to serve as feed material or "burden" in a moving-burden gasifier for the production of a synthesis or fuel gas from organic solid waste materials and coal, including especially, the so-called ... | 05/01/1979 |
| 4135888 | Enriched fuel making and sewage treating process Particulate coke and raw sewage are mixed and conveyed as a slurry through series connected, pressure sealed chambers into which super-heated steam is injected to convert the mixture into a molten mass depleted of noxious gases and volatiles. The molten m... | 01/23/1979 |
