Patent application number | Description | Published |
20090221814 | SYSTEM AND METHOD FOR PREEXTRACTION OF HEMICELLULOSE THROUGH USING A CONTINUOUS PREHYDROLYSIS AND STEAM EXPLOSION PRETREATMENT PROCESS - A system has been developed for pretreating cellulosic biomass feed stock including: a first pressurized reactor receiving the feed stock, wherein the feed stock undergoes hydrolysis in the first pressurized reactor; a sealing device having a first pressurized coupling to a feedstock discharge port of the first pressurized reactor, and a second pressurized coupling to a second pressurized reactor; a drain for a liquid including dissolved hemi-cellulosic material extracted from the feed stock in at least one of the first pressurized reactor and the sealing and extraction device; the second pressurized reactor assembly receiving the pressurized feed stock from the sealing device at a pressure substantially greater than the pressure in the first pressurized reactor, wherein cells of the feed stock are infused with water in the second pressurized reactor, and an expansion device downstream of the second pressurized reactor assembly, wherein the expansion device rapidly releases the pressure of the feed stock discharged from the second pressurized reactor such that the feed stock undergoes a steam explosion reaction. | 09-03-2009 |
20100317053 | PROCESS MACHINERY FOR FEEDING PRE-TREATED LIGNOCELLULOSIC MATERIALS INTO BIOREACTORS FOR BIO-FUELS AND BIOCHEMICALS - Methods for mixing a pretreated cellulosic biomass feedstock using a centrifugal mixer prior to reactions in a bioreactor. | 12-16-2010 |
20120041186 | SYSTEM AND METHOD FOR PREEXTRACTION OF HEMICELLULOSE THROUGH USING A CONTINUOUS PREHYDROLYSIS AND STEAM EXPLOSION PRETREATMENT PROCESS - A method including: pretreating biomass feed stock in a first pressurized reactor, wherein the feed stock undergoes hydrolysis in the first pressurized reactor; discharging the feed stock from the first pressurized reactor to a pressurized sealing device having a first pressurized coupling to a feedstock discharge port of the first pressurized reactor; maintaining a vapor phase in the first pressurized reactor by injecting steam; washing the feed stock; draining dissolved hemi-cellulosic material extracted from the feed stock; discharging the feed stock from the pressurized sealing device through a second pressurized coupling to a second pressurized reactor; in the second pressurized reactor, infusing cells of the feed stock with steam or water vapor, and rapidly releasing the pressure applied to the feed stock to cause steam expansion in the cells of the feed stock and refine the feed stock. | 02-16-2012 |
20120211512 | ASSEMBLY OF NOZZLES AND VALVES AS DISCHARGE PORTS OF A PRESSURIZED VESSEL AND METHOD FOR SWITCHING AND REPLACING THE NOZZLES AND VALVES - A discharge assembly including: a chamber having an sidewall extending around a perimeter of the chamber, an open upper region, an flange coupling at an upper region of the sidewall and extending around the upper region and a bottom, wherein the chamber receives a rotating impeller; a plurality of discharge openings in at least one of the sidewall and bottom of the chamber; a plurality of valves each coupled to one of the discharge openings, and a plurality of nozzles each coupled to one of the discharge openings and downstream in the opening to the valve for the opening. | 08-23-2012 |
20130192592 | METHOD FOR TREATING, PRESSING AND WASHING BIOMASS - A method to process cellulosic material in a treatment vessel including: introducing the cellulosic material to a processing chamber of the vessel; adding heat energy or pressure to the vessel to hydrolyze the cellulosic material in the processing chamber and dissolve hemi-cellulosic from the cellulosic material; compressing the cellulosic material in the processing chamber; extracting the dissolved hemi-cellulosic material through a screen from the processing section; draining the extracted hemi-cellulosic material from the vessel; and discharging the cellulosic material from the vessel separately from the extracted hemi-cellulosic material. | 08-01-2013 |
20130224852 | HIGH SOLIDS ENZYME REACTOR OR MIXER AND METHOD - A reactor apparatus including: an internal mixing chamber including a first chamber section having a cross-sectional area expanding from a biomass inlet to the internal mixing chamber to the a second chamber section; the second chamber section having a substantially uniform internal cross-sectional area from the opposite end of the first chamber section to a discharge end of the mixing chamber; the biomass inlet is coupled to a source of pre-treated biomass external to the reactor vessel, and a rotating mixing device in the internal mixing chamber and coaxial with an axis of the first chamber section. | 08-29-2013 |
20140110069 | PIPING SYSTEM FROM REACTOR TO SEPARATOR AND METHOD TO CONTROL PROCESS FLOW - An apparatus, for the steam explosion treatment of biomass, having a pressurized reactor vessel to receive a biomass material and steam, discharge lines connecting the pressurized reactor vessel to the separation device, the lines sized and positioned to allow for the steam explosion of biomass material. At the outlet end of the discharge lines is a collection-expansion manifold to connect the outlet end of each of the discharge lines to a collection line, wherein the collection line provides a passage for biomass material and steam flowing from the discharge lines. The collection line passage has a substantially larger cross-sectional area than the cross-sectional area of a single discharge line. The collection line is coupled to a separation device such that the separation device receives the biomass material and steam from the collection line. | 04-24-2014 |
20140110509 | PIPING SYSTEM FROM REACTOR TO SEPARATOR AND METHOD TO CONTROL PROCESS FLOW - An apparatus, for the steam explosion treatment of biomass, having a pressurized reactor vessel to receive a biomass material and steam, discharge lines connecting the pressurized reactor vessel to the separation device, the lines sized and positioned to allow for the steam explosion of biomass material. At the outlet end of the discharge lines is a collection-expansion manifold to connect the outlet end of each of the discharge lines to a collection line, wherein the collection line provides a passage for biomass material and steam flowing from the discharge lines. The collection line passage has a substantially larger cross-sectional area than the cross-sectional area of a single discharge line. The collection line is coupled to a separation device such that the separation device receives the biomass material and steam from the collection line. | 04-24-2014 |
Patent application number | Description | Published |
20080277082 | HIGH PRESSURE COMPRESSOR AND STEAM EXPLOSION PULPING METHOD - A steam explosion pulping method including: impregnating a cellulosic biomass feed material in a pressurized reactor vessel; discharging the impregnated feed material from the vessel to a high pressure compressor; elevating a pressure of the feed material in the compressor; discharging the pressurized feed material from the compressor to a conduit coupled to a blow valve; rapidly reducing pressure of the pressurized feed material as the feed material passes through the blow valve, and pulping the feed material by expansion of fluid in the feed material during the rapid pressure reduction. | 11-13-2008 |
20090308383 | APPARATUS AND METHOD FOR HYDROLYSIS OF CELLULOSIC MATERIAL IN A MULTI-STEP PROCESS TO PRODUCE C5 AND C6 SUGARS USING A SINGLE VESSEL - A system and method for extracting C | 12-17-2009 |
20090318679 | APPARATUS AND METHOD FOR HYDROLYSIS OF CELLULOSIC MATERIAL IN A TWO-STEP PROCESS - A system and method for extracting pentose from a slurry of cellulosic material comprising cellulose, water, and optionally acid in a two-stage process. | 12-24-2009 |
20100116267 | APPARATUS AND METHOD FOR TREATING, PRESSING AND WASHING BIOMASS - A biomass cooking device including: a treatment vessel having an biomass inlet adapted to receive biomass material to a processing chamber of the vessel, a biomass outlet adapted to discharge from the processing chamber the biomass material processed in the vessel, an extraction region of the vessel and a liquids outlet to the extraction region to discharge dissolved hemi-cellulosic material extracted from the biomass material in the processing chamber; a piston press in the cooking vessel defining a moveable wall of the processing chamber, wherein the piston press moves to reduce the processing chamber and thereby compress the biomass material; and a screen plate in the vessel forming a barrier between the processing chamber and an extraction region of the vessel, the screen plate having apertures to pass the dissolved hemi-cellulosic material through the screen plate from the processing chamber to the extraction region. | 05-13-2010 |
20100186910 | Four stage alkaline peroxide mechanical pulpings - A process for applying chemicals, such as an alkaline peroxide pretreatment ( | 07-29-2010 |
20110281298 | METHOD AND APPARATUS TO EXTRACTED AND REDUCE DISSOLVED HEMI-CELLULOSIC SOLIDS IN BIOMASS FOLLOWING PRE-HYDROLYSIS - A method to wash and remove dissolved solids from biomass including: discharging a biomass slurry from a pretreatment vessel to a biomass slurry retention device; adding recovered wash liquid to dilute the biomass slurry in the retention device, wherein the recovered wash liquid is extracted from a drainer device upstream of the first retention device; discharging the diluted biomass slurry from the retention device to the drainer device; separating wash liquid with dissolved solids from the diluted biomass slurry in the drainer device and discharging a concentrated biomass slurry from the drainer device, and recovering the wash liquid from the diluted biomass slurry in the drainer device and transferring the recovered wash liquid to the retention device. | 11-17-2011 |