Patent application number | Description | Published |
20090013941 | TRI-SECTOR REGENERATIVE OXIDANT PREHEATER FOR OXY-FIRED PULVERIZED COAL COMBUSTION - A tri-sector regenerative oxidant preheater apparatus, method and arrangement for utilization with oxy-fired pulverized coal combustion power plants. The preheater includes a stationary housing and a rotor rotatably mounted in the housing. Sector plates are located at the axial ends of the rotor and divide the preheater into a flue gas sector, two primary oxidant sectors, and a secondary oxidant sector interposed between the two primary oxidant sectors. A primary oxidant fan is located downstream of the preheater to create a negative environment in the primary oxidant sectors. During operation of the preheater, the environments of the two primary oxidant sectors and the flue gas sector are at about the same negative pressure, and thus there is very limited leakage between the oxidant side and the flue gas side of the preheater. The environment of the secondary oxidant sector is at a positive pressure and leakage to the negative environment of the primary oxidant sectors will be that of secondary oxidant to primary oxidant with no loss secondary oxidant to the gas side of the preheater. | 01-15-2009 |
20110061611 | SOOTBLOWER ISOLATION WALL BOX - A sootblower isolation wall box provided for sealing the wall box opening of a large scale boiler to provide sootblower lance tube access to the boiler. The wall box assembly includes a clamping seal assembly having radial sealing segments which are individually actuated. Applying fluid pressure to actuating cylinders causes the seal segments to be clamped against the outer circumference of the sootblower lance tube. During cleaning cycles, the segments are actuated to provide a radial clearance with the lance tube. Preferably, the clamping seal assembly is used in connection with another seal assembly which is relied upon to provide sealing during the cleaning steps. In a preferred embodiment, the additional seal assembly is in the form of a labyrinth-type seal assembly. | 03-17-2011 |
20110083592 | SEGREGATED IN-SITU FORCED OXIDATION WET FLUE GAS DESULFURIZATION FOR OXYGEN-FIRED FOSSIL FUEL COMBUSTION - An in-situ forced oxidation wet flue gas desulfurization apparatus, method and arrangement for utilization with oxy-fuel combustion power plants. The apparatus is a tower-like structure having a flue gas scrubbing zone and a reaction zone located subjacent to the gas scrubbing zone. A sulfur oxide absorbing liquid slurry is supplied to the gas scrubbing zone to react with and scrub the sulfur oxides from the flue gas. The partially reacted liquid slurry reagent and the scrubbed products drain into the reaction zone, rising to a set level. Oxidation air is introduced into the liquid slurry in the reaction zone to force the in-situ oxidation of sulfur compounds collected in the reaction zone. A wall separates and communicates the gas scrubbing zone and the reaction zone, the wall prevents the oxidation air from entering the gas scrubbing zone and extends into the liquid slurry below a nominal depth required to establish and maintain a liquid slurry seal thereby substantially precluding the leakage of flue gas into the reaction zone while allowing the partially reacted liquid slurry reagent and scrubbed products to drain into the reaction zone. | 04-14-2011 |
20110229371 | HYBRID WATER TREATMENT FOR HIGH TEMPERATURE STEAM GENERATORS - A steam generation system comprises: an oxygenated water treatment (OWT) sub-system configured to generate water having oxidizing chemistry; a steam generation sub-system configured to convert the water having oxidizing chemistry into steam having oxidizing chemistry; an attemperator or other injection device or devices configured to add an oxygen scavenger to the steam having oxidizing chemistry to generate steam having less oxidizing or reducing chemistry; and a condenser configured to condense the steam having less oxidizing or reducing chemistry into condensed water. | 09-22-2011 |
20110250551 | OXY-FUEL COMBUSTION OXIDANT HEATER INTERNAL ARRANGEMENT - A regenerative oxidant heater internal arrangement, including a system and method for use thereof, utilizing a unique recycle oxy-combustion methodology which includes at least two primary combustion oxidant sectors placed adjacent to both the flue gas side as well as a secondary oxidant sector positioned between the two primary sectors. | 10-13-2011 |
20120042779 | INTEGRATED FLUE GAS DEHUMIDIFICATION AND WET COOLING TOWER SYSTEM - A method and system for dehumidifying flue gas from a flue gas-generating process that supplies the flue gas to a wet flue gas processor. A wet cooling tower supplies water to a wet flue gas processor to condense water from the flue gas and form a liquid mixture in the wet flue gas processor. | 02-23-2012 |
20140000311 | METHOD FOR CONTROLLING ACIDIC COMPOUNDS PRODUCED FOR OXY-COMBUSTION PROCESSES | 01-02-2014 |
20140356793 | OXY-FUEL COMBUSTION OXIDANT HEATER INTERNAL ARRANGEMENT - A regenerative oxidant preheater internal arrangement, including a system and method for use thereof, utilizing a unique recycle oxy-combustion methodology which includes at least two primary combustion oxidant sectors placed adjacent to both the flue gas side as well as a secondary oxidant sector positioned between the two primary sectors. A tri-sector regenerative oxidant preheater apparatus, method and arrangement for utilization with oxy-fired pulverized coal combustion power plants. | 12-04-2014 |
Patent application number | Description | Published |
20120027604 | COMPOSITE VANE MOUNTING - A vane includes a composite airfoil having chordwise spaced apart forward and aft dovetail feet at or near leading and trailing edges of the airfoil. Each foot includes a shank connecting a dovetail root to an airfoil base and each root is slidably received in a dovetail slot in an inner vane mount. The dovetail slot has a triangular slot cross section and a flat slot bottom and flat slot pressure and suction side crush faces corresponding to pressure and suction sides of the airfoil. The dovetail root having a triangular root cross section and a flat root bottom and flat dovetail root pressure and suction side crush faces. A biasing means urges the root bottom of the dovetail roots away from the slot bottom and presses and preloads the dovetail root pressure and suction side crush faces against the slot pressure and suction side slot crush faces. | 02-02-2012 |
20120171025 | VANE WITH SPAR MOUNTED COMPOSITE AIRFOIL - A vane includes a composite airfoil having one or more outer pockets and one or more outer spars received therein respectively. The outer spars extending radially inwardly from an outer bridge of the outer vane mount outwardly supporting airfoil. The spars may be integrally formed with the bridge and adhesively bonded to the composite airfoil within the pockets with a passage extending between an airfoil base and an airfoil tip. A metallic leading edge tip may be disposed along the leading edge of the composite airfoil. A gas turbine engine annular fan frame incorporates the vanes in an annular row of composite outlet guide vanes extending radially between and connecting radially inner and outer rings of the fan frame. | 07-05-2012 |
20120171028 | VANE WITH SPAR MOUNTED COMPOSITE AIRFOIL - A vane includes a composite airfoil having one or more pockets and one or more spars received therein respectively. The spars extending radially away from a bridge of a vane mount supporting airfoil. The spars may be integrally formed with the bridge. The spars may be adhesively bonded to the composite airfoil within the pockets. A passage may extend between an airfoil base and an airfoil tip. A gas turbine engine annular fan frame includes an annular row of the composite outlet guide vanes extending radially between and connecting radially inner and outer rings of the fan frame. | 07-05-2012 |
20130206503 | Acoustic Panel and Method of Forming - A disclosed embodiment provides an acoustic panel having a composite laminate panel having a back sheet layer, a face sheet layer, and a core layer disposed therebetween. The core layer has one or more depressions at an interface between the core layer and the face sheet layer, with the face sheet having a generally uniform thickness across the composite laminate panel. A hole extends through the composite laminate panel at the depressions, and a bolt assembly extends through the hole such that it is countersunk. | 08-15-2013 |
Patent application number | Description | Published |
20100233771 | SYSTEM FOR PRE-TREATMENT OF BIOMASS FOR THE PRODUCTION OF ETHANOL - A system for the pre-treatment of biomass for use in a biorefinery to produce ethanol and other bioproducts is disclosed. The system comprises a method comprising the steps of preparing the biomass into prepared biomass; pre-treating the prepared biomass into pre-treated biomass by application of a dilute acid having a concentration of about 0.8 to 1.1 percent by weight at a temperature of about 130 to about 170 degrees Celsius for a period of time in a range of about 8 to 12 minutes. The system also comprises an apparatus for separating the pre-treated biomass into a liquid component comprising pentose and a solids component comprising cellulose and lignin; a fermentation system configured to produce the fermentation product; and a distillation system. The fermentation product comprises ethanol. The biomass comprises lignocellulosic material, comprising corn cobs, corn plant husks, corn plant leaves and corn plant stalks. | 09-16-2010 |
20110079219 | BIOMASS PRETREATMENT - A system for pre-treating biomass for the production of ethanol is provided. The system comprises a method for pre-treating biomass. The method comprises supplying biomass to a steaming bin, wherein the biomass is mixed with water, and inputting the steamed biomass to a first pretreatment reactor, wherein the steamed biomass comprises liquids and solids. The method also comprises removing a bulk of liquids from the solids and feeding the solids into a second pretreatment reactor. The method further comprises applying a pressure drop to the solids in the second pretreatment reactor, wherein the pressure drop opens up a structure of the solids, and sending the solids to a fermentation process for ethanol processing. | 04-07-2011 |
20120129234 | SYSTEM FOR TREATMENT OF BIOMASS TO FACILITATE THE PRODUCTION OF ETHANOL - A method for treating fermented lignocellulosic biomass to be supplied to a distillation system for production of ethanol is provided. The method includes pre-treating lignocellulosic biomass into pre-treated biomass and separating the pre-treated biomass into a liquid component comprising sugars and a solids component comprising cellulose and lignin. The method also includes hydrolysing the solids component of the pre-treated biomass into a hydrolysed biomass comprising sugars and lignin and fermenting the hydrolysed solids component of the pre-treated biomass into a fermentation product comprising ethanol and lignin. The method also includes treating the fermentation product and distilling the treated fermentation product to recover the ethanol. The lignocellulosic biomass comprises cellulose, hemi-cellulose and lignin. | 05-24-2012 |
20130164804 | Low Severity Pretreatment of Lignocellulosic Biomass - Methods are provided for preparing a hydrolysate containing soluble sugar molecules from biomass that contains cellulose and hemicellulose. Hemicellulose sugars are extracted in the process, and the resulting hydrolysate may be used to support microbial fermentation to produce products of interest. | 06-27-2013 |
20130236941 | Integrated Biorefinery - Systems and methods for producing bioproducts are shown. The systems and methods herein can be configured and used in an integrated biorefinery. The integrated biorefinery may comprise a sugar production facility such as a sugar mill, a production facility for one or more bioproduct(s) such as butanol, and optionally an ethanol production facility employing the system and method. | 09-12-2013 |
20140209092 | SYSTEMS AND METHODS FOR ACID RECYCLE - Methods and systems for pretreating lignocellulosic biomass are disclosed. An acid solution between 1% to 1.6% sulfuric acid is applied to the biomass. The biomass is subjected to an elevated temperature to cause the production of xylose, glucose, and furfural. Adjustments to temperature, acid concentration, and time can generate at least 80% or 90% of theoretical xylose, 45% or 50% of the theoretical glucose, and less than 4000 ppm of furfural in the xylose liquor. A portion of the resulting xylose liquor may be separated from the glucan solids. The xylose liquor, still highly acidic, can be recycled to reduce subsequent acid loading requirements. Makeup acid solution is added to the xylose liquor and subsequent biomass to ensure a proper solids to liquids ratio. The biomass is again treated to higher temperatures to yield sugars. The process may be repeated for each subsequent cycle. | 07-31-2014 |
20140234911 | SYSTEMS AND METHODS FOR HYDROLYSIS OF BIOMASS - Systems and methods are disclosed for treating lignocellulosic biomass to be supplied to a fermentation system for production of a fermentation product. The systems and methods comprise pre-treating the biomass into pre-treated biomass and separating the pre-treated biomass into a liquid component comprising sugars and a solids component comprising cellulose and lignin. The systems and methods also comprise treating the solids component of the pre-treated biomass into a treated component. The biomass comprises lignocellulosic material. Treating the solids component comprises application of an enzyme formulation and makeup water to form a slurry. The enzyme formulation comprises a cellulase enzyme. The makeup water includes a clarified thin stillage composition and/or an anaerobic membrane digester effluent composition. | 08-21-2014 |
20140311480 | BIOMASS PRETREATMENT - A system for pre-treating biomass for the production of ethanol is provided. The system supplies biomass to a steaming bin, wherein the biomass is mixed with water, and inputting the steamed biomass to a first pretreatment reactor, wherein the steamed biomass comprises liquids and solids. The system removes a bulk of liquids from the solids and feeding the solids into a second pretreatment reactor. The system applies a pressure drop to the solids in the second pretreatment reactor, wherein the pressure drop opens up a structure of the solids, and sending the solids to a fermentation process for ethanol processing. | 10-23-2014 |
20150128932 | SYSTEM FOR TREATMENT OF BIOMASS TO FACILITATE THE PRODUCTION OF ETHANOL - Systems for treating biomass for the production of ethanol are disclosed. The systems are configured to treat a liquid component separated from biomass to yield sugars available to be fermented into a fermentation product. The systems comprise a filter configured to remove particulate matter to provide a filtered component and an apparatus configured to remove inhibitors from the filtered liquid component provide a treated liquid component comprising sugars available for fermentation. Methods for treating for treating biomass useful in the production of a fermentation product are also disclosed. The methods include the steps of filtering a liquid component to remove particulate matter thereby yielding a filtered liquid component, and treating the filtered liquid component to remove inhibitors thereby yielding a treated liquid component comprising sugars available to be fermented into a fermentation product. | 05-14-2015 |