Bizarre Patents
A simulation environment for the sport of boxing utilizing a robotic machine interface system which carries a person.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7338542 | Designed cellular coal Coal-based cellular products that can be custom designed to have integral stiffeners or load paths, directed heat transfer paths, and/or directed mass transfer paths and methods for their production are described. Such design and production is made possible by the a... | 03/04/2008 |
| 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 |
| 7282072 | Synthetic fuel and methods for producing synthetic fuel The present invention provides synthetic fuels, additives for use in preparing synthetic fuels and methods for producing synthetic fuel. The synthetic fuels include low levels of a chemical change additive selected from the group consisting of alkaline earth oxides ... | 10/16/2007 |
| 7128767 | Method to upgrade low rank coal stocks The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are d... | 10/31/2006 |
| 6942707 | Valorization of by-products in the ecological coal transformation A coal transformation system comprises an ecological coal production unit for transforming raw coal into ecological coal. The production unit has an exhaust for carrying in a storage unit combustible, gaseous, waste by-products generated during the transformation of... | 09/13/2005 |
| 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 |
| 6558441 | Process of upgrading low rank coal A process of upgrading low rank coal, including subjecting the low rank coal to pyrolysis in a liquid phase such as in an organic solvent at a temperature of 400-450° C.... | 05/06/2003 |
| 6447559 | Treatment of coal Process for treating coal to enhance its rank, wherein the temperature of the material is gradually increased in a controlled set of atmospheres, to allow for the reduction of surface and inherent moisture and the controlled reduction of volatile matter w... | 09/10/2002 |
| 6436158 | Coal reforming process and apparatus therefor As one of the coal reforming treatment steps constituting a coal reforming process, an oxidation treatment step is carried out on a circular grate. For this purpose, there is used a coal reforming apparatus comprising a circular grate, the circular grate ... | 08/20/2002 |
| 6325001 | Process to improve boiler operation by supplemental firing with thermally beneficiated low rank coal The invention described is a process for improving the performance of a commercial coal or lignite fired boiler system by supplementing its normal coal supply with a controlled quantity of thermally beneficiated low rank coal, (TBLRC). This supplemental T... | 12/04/2001 |
| 6146432 | Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion This invention is a process for the passivation or deactivation with resp to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a ... | 11/14/2000 |
| 5527365 | Irreversible drying of carbonaceous fuels The invention disclosed relates to a method for drying low-quality solid carbonaceous fuels such as lignite and sub-bituminous coal to reduce the moisture content substantially to zero, and to minimize re-adsorption of moisture during storage and transpor... | 06/18/1996 |
| 5503646 | Process for coal - heavy oil upgrading A process for upgrading a low rank coal and a heavy oil to produce an improved coal product and an improved oil product. First, the low rank coal is dewatered to reduce its moisture content to less than about 4 percent in order to render the low rank coal... | 04/02/1996 |
| 5482517 | Coal-water mixture and process for producing same A coal-water mixture is disclosed which can be produced without using synthetic additives. After an acid such as a mineral acid is added to coal powder which is obtained by grinding coal such as jet coal or gas coal, water anti a plasticizer, composed of ... | 01/09/1996 |
| 5474582 | Coal-water mixtures from low rank coal and process of preparation thereof A process for preparing a coal-water fuel from a low rank coal. The first step of the process provides for an aqueous slurry containing particles of the low rank coal. A quantity of an agglomerating agent in the range of about 10% to 30% weight to dry ash... | 12/12/1995 |
| 5411560 | Method of producing binderless pellets from low rank coal The invention relates to a method and apparatus of forming pellets and in particular spherical binderless pellets from lower rank coals. The method includes the steps of feeding a pelletizing means 10, with a lower rank feedstock, 1; rotating the coal in ... | 05/02/1995 |
| 5364421 | Coal blends having improved ash viscosity Coal blends suitable for combustion in a slagging-type combustion apparatus comprise blends of (1) a bituminous coal which forms ash slag having unacceptably high viscosity with (2) a lignitic coal which forms ash slag having marginal viscosity characteri... | 11/15/1994 |
| 5324336 | Partial oxidation of low rank coal Abundant low cost low rank coal may now be gasified by partial oxidation or burned in a furnace or boiler. About 30 to 45 parts by wt. of comminuted low rank coal is mixed and reacted in the reaction zone of a partial oxidation gas generator with a free-o... | 06/28/1994 |
| 5322530 | Process for clean-burning fuel from low-rank coal A process for upgrading and stabilizing low-rank coal involving the sequential processing of the coal through three fluidized beds; first a dryer, then a pyrolyzer, and finally a cooler. The fluidizing gas for the cooler is the exit gas from the pyrolyzer... | 06/21/1994 |
| 5290324 | Coal-water mixture using upgraded low-rank coal and process for producing said mixture The present invention provides a process for producing a coal-water mixture using a reaction mixture obtained by subjecting a low-rank coal of high water content to a hydrothermal treatment in the presence of carbon monoxide and water at a temperature not... | 03/01/1994 |
| 5162050 | Low-rank coal oil agglomeration product and process A selectively-sized, raw, low-rank coal is processed to produce a low ash and relative water-free agglomerate with an enhanced heating value and a hardness sufficient to produce a non-decrepitating, shippable fuel. The low-rank coal is treated, under high... | 11/10/1992 |
| 5085764 | Process for upgrading coal In a process for reducing the sulfur and ash contents of coal, coal is sequentially contacted with fused alkali metal caustic, wash water, and acid. Contacting the coal with the caustic produces water-soluble compounds. Sufficient wash water is used to re... | 02/04/1992 |
| 5084160 | Method for solubilization of low-rank coal using low molecular weight cell-free filtrates derived from cultures of coriolus versicolor A method is provided for isolating a less than 5,000 dalton molecular weight extracellular product from Coriolus versicolor. The extracellular product is useful for biosolubilizing low-rank coals to form water-soluble products.... | 01/28/1992 |
| 5059307 | Process for upgrading coal In a process for reducing the sulfur and ash contents of coal, coal is sequentially contacted with fused alkali metal caustic, water, carbonic acid, and a strong acid. Caustic removed from the coal by the water and the carbonic acid is recovered as anhydr... | 10/22/1991 |
| 5049163 | Process for reducing sulphur dioxide emission from burning coal containing sulphur This invention discloses a process for reducing sulphur dioxide emission from burning coal containing sulphur. In the disclosed process, pulverized combustible materials, such as coal, wood flour, combustible plant, charcoal, etc., and a sulphur trapping ... | 09/17/1991 |
| 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 |
| 5033230 | Method for passivating particulate coal A method is disclosed for drying and passivating wet coals, for example bituminous, subbituminous or lignite. The wet coal is introduced into a heating zone at a controlled rate, then is contacted with a heavy hydrocarbonaceous treatment material having a... | 07/23/1991 |
| 5032146 | Low-rank coal oil agglomeration A low-rank coal oil agglomeration process. High mineral content, a high ash content subbituminous coals are effectively agglomerated with a bridging oil which is partially water soluble and capable of entering the pore structure, and usually coal derived.... | 07/16/1991 |
| 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 |
| 4810258 | Low rank coal or peat having impurities removed by a drying process A low rank coal or peat has various impurities removed therefrom by a drying process. The impurities may be removed in a subsequent operation. The dried coal or peat will not absorb substantial moisture when stored or transported.... | 03/07/1989 |
| 4788360 | Process for the production of regenerated humic acids from coal A process is disclosed for the production of humic acids, which comprises an oxidation of coal in dry phase with oxygen or mixtures of oxygen and nitrogen in a fluidized-bed reactor, by using coal with a granulometry comprised within the range of from 100... | 11/29/1988 |
| 4761162 | Upgrading and storage of solid carbonaceous fuel Solid carbonaceous fuel is dried to a desired moisture content, cooled, and stored in an atmosphere having a controlled humidity and oxygen content to prevent heat generation which causes spontaneous combustion. A suitable atmosphere is produced by displa... | 08/02/1988 |
| 4758244 | Upgrading solid fuels Densified coal pellets of improved physical properties and enhanced calorific value are produced by a process which includes subjecting coal to a shearing-attritioning step followed by extrusion and drying steps, characterised by incorporating an additive... | 07/19/1988 |
| 4728339 | Multiple hearth apparatus and process for thermal treatment of carbonaceous materials A multiple hearth apparatus and process for the thermal treatment of organic carbonaceous materials under controlled pressure and temperature comprising a pressure vessel containing a plurality of superimposed annular hearths including hearths in a reacti... | 03/01/1988 |
| 4705533 | Utilization of low rank coal and peat Low rank coals including lignite, brown and sub-bituminous coals, and peat containing unacceptably high quantities of water are dried and enriched in BTU content. The mine low rank coal is crushed to between about one-half inch and three inches in diamete... | 11/10/1987 |
| 4650495 | Method for stabilizing dried low rank coals A method for pyrophoric particle protection of carbonaceous material particularly low rank coals where the material is simultaneously coated with a treating agent and cooled by a fluidizing gas.... | 03/17/1987 |
| 4619669 | Method for increased mine recovery and upgrading of lignite A method is disclosed for upgrading run-of-the-mine (ROM) lignites to remove the gangue (clays, rock etc.) which form ash when the lignite is burned. The unique features of the process, a combination of unit operations in a specified sequence, result in l... | 10/28/1986 |
| 4613429 | Process for removing mineral matter from coal A process for removing mineral matter from feed coal employing liquid carbon dioxide. A water slurry of pulverized feed coal is mixed with liquid carbon dioxide. Demineralized coal is collected in the liquid carbon dioxide phase while separated mineral ma... | 09/23/1986 |
| 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 |
| 4586935 | Method of preparing coal to increase its calorific value and making it safe for storage and transport There is described an improved method for treating low rank coal to lessen the risk of autogenous heating and attendant combustion hazards by means of passing the coal through a bath of molten metal to elevate its temperature into the range Td to Td+50° ... | 05/06/1986 |
