Class / Patent application number | Description | Number of patent applications / Date published |
048210000 | Coal | 26 |
20080196308 | THERMALLY STABLE COCURRENT GASIFICATION SYSTEM AND ASSOCIATED METHODS - A method and apparatus, in one example, relates to a system and method for the generation of very low-tar, high-energy synthesis gas from a large variety of carbonaceous feedstock, including those with higher moisture levels than conventional gasifiers. The system comprises a gasification reactor wherein a portion of the energy of the output syngas of the reactor is used to heat the gasification zone of the reactor via an annular space surrounding the gasification zone of the gasifier, to maintain a temperature condition above 800° C. The maintenance of a long, quasi-uniform high-temperature gasification zone reduces the amount of input air or oxygen, reduces bridging within the gasifier, cracks pyrolysis oils, increases the conversion of char, minimizes heat losses from the bed, and converts moisture within the packed bed into a gasification medium. This results in a very low tar synthesis gas with less nitrogen dilution and higher energy content than conventional gasifiers. The reduction in bridging reduces operating costs. | 08-21-2008 |
20080256861 | Coal to Liquid Processes - Process for preparing a hydrocarbon product from a solid carbonaceous fuel ( | 10-23-2008 |
20090025294 | Simultaneous gasification of coals of widely differing degrees of coalification in entrained flow gasification - The invention relates to a gasification method which, with a reliable and safe mode of operation, allows the simultaneous gasification of coals of different degrees of coalification, including those of differing coal qualities such as brown coals and stone coals, with the pulverized fuel consisting of the mixture of the different coals being fed from a common dispensing system to the gasification reactor. | 01-29-2009 |
20090090057 | Integration of an integrated gasification combined cycle power plant and coal to liquid facility - A novel method of combining the CTL fuel plant and IGCC electrical plant by sharing the systems of coal intake, coal preparation, gas separation, and water units is described herein. This configuration allows for the combined facility to offer advantages in efficiencies of production, operational flexibility, scalability, and reliability by a multi-path integration of the processing units. | 04-09-2009 |
20090094892 | Commingled coal and biomass slurries - An energy efficient process for converting biomass into a higher carbon content, high energy density slurry. Water and biomass are mixed at a temperature and under a pressure that are much lower than in prior processes, but under a non-oxidative gas, which enables a stable slurry to be obtained containing up to 60% solids by weight, 20-40% carbon by weight, in the slurry. The temperature is nominally about 200° C. under non-oxidative gas pressure of about 150 psi, conditions that are substantially less stringent than those required by the prior art. In another embodiment, the biomass water slurry can be mixed with a coal water slurry to further optimize the carbon content and pumpability of the biomass slurry. | 04-16-2009 |
20090158664 | ROTARY APPARATUS FOR USE WITH A GASIFIER SYSTEM AND METHODS OF USING THE SAME - A method for transporting a solid particulate within a gasifier system is provided. The method includes discharging solid particulate through an inlet into an opening defined within a rotor, wherein the inlet and the solid particulate are at a first pressure. The method further includes rotating the rotor such that at least one end of the opening is aligned in flow communication with a duct at a second pressure that is different from the first pressure. The solid particulate is discharged from the rotor opening through an outlet such that the solid particulate is at the second pressure, and the rotor is rotated such that at least one end of the rotor opening is aligned in flow communication with a pressure source that is at approximately the first pressure, and such that the opening is at the first pressure. | 06-25-2009 |
20090188165 | LOW OXYGEN CARRIER FLUID WITH HEATING VALUE FOR FEED TO TRANSPORT GASIFICATION - Systems and processes for producing synthesis gas. A carbonaceous feedstock can be combined with one or more low-oxygen carrier fluids having a high heating value. The feedstock and carrier fluid, in the presence of one or more oxidants, can be gasified to provide a synthesis gas. In one or more embodiments, at least a portion of the synthesis gas can be recycled for use as the carrier fluid. | 07-30-2009 |
20090199479 | Process for preparing fuel solids for gasification - The invention provides a process that comminutes fuel solids in a steam-driven shear field, with controlled water content and optionally a catalyst, with gasification of the free-standing or slurry particulate outputs. Unlike conventional gasification methods the invention requires no dioxygen to be present, and produces dry friable ash that has significant marketable value as a material in its own right. | 08-13-2009 |
20090217590 | Coal Compositions for Catalytic Gasification - Particulate compositions are described comprising an intimate mixture of a coal and a gasification catalyst in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia and other higher hydrocarbons are formed. Processes are also provided for the preparation of the particulate compositions and converting the particulate composition into a plurality of gaseous products. | 09-03-2009 |
20100031572 | Coal to Liquid Processes - A method of increasing the hydrogen/carbon monoxide (H | 02-11-2010 |
20100083576 | Solids mixing method - A process for providing fast pyrolysis or gasification of feed material, such as biomass, by mixing it with inert inorganic hot solids in a fluidized mixer/reactor and utilizing released gas from the resulting reaction to transport the mixture from the mixer/reactor. | 04-08-2010 |
20100101146 | FLUIDIZED BED GASIFICATION METHOD - Provided is a fluidized bed gasification method wherein an amount of solid particles to be circulated in a fluidized bed combustion furnace is controlled to enhance gasification efficiency in the furnace. | 04-29-2010 |
20100139167 | GASIFIER ADDITIVES FOR IMPROVED REFRACTORY LIFE - Embodiments disclosed herein provide hydrocarbon additives and methods of making and using the same. The additives are suitable for use in conjunction with gasifiers, furnaces, or other high-temperature vessels. The additives may be part of an input stream to a reaction vessel of a hydrocarbon gasifier. The additives may include materials that at least partially reduce the infiltration of slag into the refractory material. | 06-10-2010 |
20100146858 | METHOD OF RETROFITTING A COAL GASIFIER - A coal gasifier is retrofitted to achieve multiple advantages such as reduced oxygen consumption, reduced CO2 and NOx emissions, better H:C ratio, better carbon conversion etc. This is achieved by dividing the coal into at least two zones and modifying the gasifier and operating it as described. The coal is injected into a first zone, configured to devolatilize a substantial portion of the injected coal to produce coal char and volatiles. The operation is tuned to substantially consume the oxidant injected in the first zone. A low-calorific-value, high oxidant feedstock is injected in second zone of the gasifier. The devolatilization of the low-calorific-value, high oxidant content feedstock provides the oxygen containing compounds which gasify at least a portion of the coal char generated in the first zone. | 06-17-2010 |
20100299996 | Method for high efficiency for producing fuel gas for power generation - A method is provided for operating a coal gasifier, preferably an oxygen-blown two zone-coal gasifier, without the need for the addition of water and producing a high LHV-content coal product fuel gas from coal. A first supply of coal, preferably dry coal, first supply of carbon dioxide, and a supply of oxygen are passed into a high pressure combustion vessel wherein the coal reacts with the oxygen and carbon dioxide to form an exothermic zone producing a combustion temperature in excess of the melting point of the ash in the coal. This in turn produces a melted ash and a combustion product gas comprising carbon monoxide. The melted ash is drained or otherwise removed for disposal and the combustion product gas subsequently is passed into an entrained flow reaction vessel. A second supply of dry coal and a second supply of carbon dioxide are injected into the entrained flow reaction vessel wherein the coal thermally reacts with the combustion product gas and the carbon dioxide and produces a product fuel gas. The resultant product fuel gas comprises more moles of carbon monoxide than moles of carbon in the first and second supplies of coal. The product fuel gas may exhibit a gas exit temperature at a value below the melting point of the coal ash but no lower than about 1400° Kelvin, and it may be passed to a turbine having closed loop internal cooling thereby recovering energy and lowering the product gas pressure and temperature prior to potential heat exchange with incoming gasifier feed gases. | 12-02-2010 |
20100299997 | INTEGRATED ENERGY AND/OR SYNTHESIS GAS PRODUCTION METHOD BY IN-SITU OXYGEN PRODUCTION, CHEMICAL LOOPING COMBUSTION AND GASIFICATION - The invention relates to an integrated method of in-situ oxygen production, chemical looping combustion and gasification of liquid, solid or gaseous fuels allowing combustion of coal, petroleum coke and/or liquid hydrocarbons and notably heavy and/or extra heavy or bituminous residues for production of synthesis gas under pressure and/or energy. | 12-02-2010 |
20110120013 | GASIFICATION OF COAL - A coal processing operation ( | 05-26-2011 |
20120222355 | METHOD FOR GASIFICATION OF CARBONACEOUS SOLID MATERIALS - An apparatus for thermochemical conversion of solid carbonaceous materials into fluid fuels using a fluid source of oxygen and an external source of concentrated radiation includes a reactor having a wall defining a cavity; a radiation inlet positioned in the wall for passing concentrated radiation into the cavity; and at least one inlet for introducing a fluid reactant flow of a source of oxygen and particles of carbonaceous material into direct exposure to the concentrated radiation in the cavity so as to heat and thermochemically convert the particles into fluid fuel. A process and system are also provided. The fluid source of oxygen is preferably steam and the carbonaceous material is preferably particles of petcoke. | 09-06-2012 |
20120233921 | UPRIGHT GASIFIER - A generally upright reactor system for gasifying a feedstock. The reactor system generally includes a main body, at least two inlet projections extending outwardly from the main body, and at least one inlet positioned on each of the inlet projections. Each of the inlets is operable to discharge the feedstock into the reaction zone. | 09-20-2012 |
20120266539 | METHOD FOR THE COMBINED RESIDUE GASIFICATION OF LIQUID AND SOLID FUELS - A process for joint entrained-bed gasification of ash-containing solid fuels and liquid fuels which are fed separately of each other to the coal gasification reactor via several burners, said burners having a concentric firing angle of greater than 0 degree such that soot formation is reduced and the conversion efficiency is increased, and the solid is conveyed to the gasification reactor together with an inert gas, and at least part of the ash-containing solid fuel contains fine coal particles which originate from coal mining and are not suited for fixed-bed gasification, and the liquid ash-containing fuel contains residues from a fixed-bed gasification. | 10-25-2012 |
20130025201 | HIGH ENERGY TRANSPORT GAS AND METHOD TO TRANSPORT SAME - A high energy transport gas and a method to transport the high energy transport gas are used to increase the energy content of a pipeline and other vessels that are designed to carry natural gas under ambient conditions, in a compressed state or in a liquefied state. Methane and other gases are used as the feedstock, with methane from natural gas fields, coal beds or derived from hydrogen reacting with coal being primary energy sources. Also, this gas and method can provide an abundant source for hydrogen production, and the energy from hydrogen can be used for fuel cell applications that generate electricity and power motor vehicles. This gas and method are capable of increasing the energy capacity of current natural gas pipelines and other storage and transport vessels. | 01-31-2013 |
20130167441 | METHOD FOR THE PSEUDO-DETONATED GASIFICATION OF COAL SLURRY IN A COMBINED CYCLE - The invention relates to the field of power engineering and, more specifically, to systems for generating electricity based on the use of solid fuel, primarily brown and black coal. In the coal gasification method, a gasifier is fed with a uniform activated coal water fuel, the droplets of which are of equal size and the coal particles in said droplets having a similar granulometric composition. The fuel droplets are introduced intermittently in separate doses of fuel with a certain amount of motion being imparted thereto. The milling of the coal for the activated coal water fuel preparation method is adjusted adaptively according to the criterion of the actual amount of volatile substances given off by the coal, and the coal is thoroughly classified according to its granulometric composition. The invention provides for more extensive recovery of thermal energy from coal and more efficient electricity generation. | 07-04-2013 |
20130326953 | Gasification Method for Reducing Emission of Carbon Dioxide - Provided is a gasification method of a carbon-containing material, the method including: (a) reacting a carbon-containing material to be treated under the presence of a catalyst with steam to produce a syngas containing hydrogen, carbon monoxide and carbon dioxide; (b) generating a carbon dioxide rich gas by introducing a portion of the syngas that has produced in step (a) into a combustion process, and/or separating hydrogen and carbon monoxide from the syngas produced in step (a); and (c) recycling, to step (a), the carbon dioxide rich gas that has been produced in step (b). By the method, the necessity of separating or collecting and storing carbon dioxide for reducing carbon dioxide is eliminated to minimize costs for constructing a special device and facility for the separation or collecting and storage of the carbon dioxide. | 12-12-2013 |
20130326954 | PROCESS FOR PRODUCING SYNTHESIS GAS - A process for controlling the carbon conversion of a gasifier fuelled with a carbonaceous feedstock by mixing in biomass, the process comprising the steps of (a) pressurizing the biomass and carbonaceous feedstock; (b) introducing the biomass and carbonaceous feedstock into the gasification reactor vessel; (c) partially oxidizing the carbonaceous feedstock/biomass with a molecular oxygen-comprising gas to obtain a synthesis gas comprising carbon monoxide and hydrogen; (d) measuring the C02 content of the syngas and comparing with a pre-determined value range; (e) adjusting the biomass/carbonaceous feedstock ratio by changing the biomass feed rate; wherein said biomass and carbonaceous feedstock comprises from 10 wt % to 50 wt % of biomass and wherein the level of biomass is adjusted within this range to control the carbon conversion. | 12-12-2013 |
20140059930 | METHOD OF OPERATING A GASIFIER - A coal gasifier is retrofitted to achieve multiple advantages such as reduced oxygen consumption, reduced CO2 and NOx emissions, better H:C ratio, better carbon conversion etc. This is achieved by dividing the coal into at least two zones and modifying the gasifier and operating it as described. The coal is injected into a first zone, configured to devolatilize a substantial portion of the injected coal to produce coal char and volatiles. The operation is tuned to substantially consume the oxidant injected in the first zone. A low-calorific-value, high oxidant feedstock is injected in second zone of the gasifier. The devolatilization of the low-calorific-value, high oxidant content feedstock provides the oxygen containing compounds which gasify at least a portion of the coal char generated in the first zone. | 03-06-2014 |
20140144082 | Methods of Converting Fuel - A method for converting fuel may include reducing at least one metal oxide in a first reactor with a fuel to produce a reduced metal or a reduced metal oxide, transporting the reduced metal or reduced metal oxide from the first reactor to a second reactor, oxidizing at least a portion of the reduced metal or reduced metal oxide from the first reactor in the second reactor to produce a metal oxide intermediate, transporting the metal oxide intermediate from the second reactor to a third reactor, removing ash, char, or unwanted materials with a separation unit from the metal oxide intermediate transported from the second reactor to the third reactor, regenerating the at least one metal oxide, and transporting the regenerated metal oxide from the third reactor to the first reactor. | 05-29-2014 |