Patent application number | Description | Published |
20080216649 | Liquid-phase and vapor-phase dehydration of organic/water solutions - Processes for dehydrating an organic/water solution by pervaporation or vapor separation using fluorinated membranes. The processes are particularly useful for treating mixtures containing light organic components, such as ethanol, isopropanol or acetic acid. | 09-11-2008 |
20090004713 | Membrane-augmented distillation with pressure change to separate solvents from water - Processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps. | 01-01-2009 |
20090057224 | Dehydration processes using membranes with hydrophobic coating - Processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol. | 03-05-2009 |
20090277326 | Gas separation processes using membrance with permeate sweep to recover reaction feedstocks - A gas separation process for treating off-gas streams from reaction processes, and reaction processes including such gas separation. The invention involves flowing the off-gas across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, and passing the permeate/sweep gas mixture to the reaction. The process recovers unreacted feedstock that would otherwise be lost in the waste gases in an energy efficient manner. | 11-12-2009 |
20100051441 | Membrane-augmented distillation with compression to separate solvents from water - Processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps. | 03-04-2010 |
20100236404 | GAS SEPARATION PROCESS USING MEMBRANES WITH PERMEATE SWEEP TO REMOVE CO2 FROM COMBUSTION GASES - A gas separation process for treating flue gases from combustion processes, and combustion processes including such gas separation. The invention involves flowing the flue gas stream to be treated across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas to the combustor. | 09-23-2010 |
20110005272 | Process for separating carbon dioxide from flue gas using parallel carbon dioxide capture and sweep-based membrane separation steps - A gas separation process for treating flue gases from combustion processes, and combustion processes including such gas separation. The invention involves routing a first portion of the flue gas stream to be treated to a carbon dioxide capture step, while simultaneously flowing a second portion of the flue gas across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas to the combustor. | 01-13-2011 |
20110130598 | MEMBRANE AUGMENTED DISTILLATION TO SEPARATE SOLVENTS FROM WATER - Processes for removing water from organic solvents, such as ethanol. The processes include distillation to form a rectified overhead vapor, compression of the rectified vapor, and treatment of the compressed vapor by two sequential membrane separation steps. | 06-02-2011 |
20110167821 | COMBUSTION SYSTEMS, POWER PLANTS, AND FLUE GAS TREATMENT SYSTEMS INCORPORATING SWEEP-BASED MEMBRANE SEPARATION UNITS TO REMOVE CARBON DIOXIDE FROM COMBUSTION GASES - Disclosed herein are combustion systems, power plants, and flue gas treatment systems that incorporate sweep-based membrane separation units to remove carbon dioxide from combustion gases. In its most basic embodiment, the invention is a combustion system that includes three discrete units: a combustion unit, a carbon dioxide capture unit, and a sweep-based membrane separation unit. In a preferred embodiment, the invention is a power plant including a combustion unit, a power generation system, a carbon dioxide capture unit, and a sweep-based membrane separation unit. In yet another embodiment, the invention is a flue gas treatment system that incorporates three membrane separation units with a carbon dioxide liquefaction unit. | 07-14-2011 |
20110200491 | COMBUSTION SYSTEMS AND POWER PLANTS INCORPORATING PARALLEL CARBON DIOXIDE CAPTURE AND SWEEP-BASED MEMBRANE SEPARATION UNITS TO REMOVE CARBON DIOXIDE FROM COMBUSTION GASES - Disclosed herein are combustion systems and power plants that incorporate sweep-based membrane separation units to remove carbon dioxide from combustion gases. In its most basic embodiment, the invention is a combustion system that includes three discrete units: a combustion unit, a carbon dioxide capture unit, and a sweep-based membrane separation unit. In a preferred embodiment, the invention is a power plant including a combustion unit, a power generation system, a carbon dioxide capture unit, and a sweep-based membrane separation unit. In both of these embodiments, the carbon dioxide capture unit and the sweep-based membrane separation unit are configured to be operated in parallel, by which we mean that each unit is adapted to receive exhaust gases from the combustion unit without such gases first passing through the other unit. | 08-18-2011 |
20110219777 | POWER GENERATION PROCESS WITH PARTIAL RECYCLE OF CARBON DIOXIDE - Disclosed herein is a power generation process in which a portion of the carbon dioxide generated by gaseous fuel combustion is recycled back to the power generation process, either pre-combustion, post-combustion, or both. The power generation process of the invention may be a combined cycle process or a traditional power generation process. The process utilizes sweep-based membrane separation. | 09-15-2011 |
20110219778 | POWER GENERATION PROCESS WITH PARTIAL RECYCLE OF CARBON DIOXIDE - Disclosed herein is a power generation process in which a portion of the carbon dioxide generated by gaseous fuel combustion is recycled back to the power generation process, either pre-combustion, post-combustion, or both. The power generation process of the invention may be a combined cycle process or a traditional power generation process. The process utilizes sweep-based membrane separation. | 09-15-2011 |
20110219949 | GAS SEPARATION PROCESS USING MEMBRANES WITH PERMEATE SWEEP TO REMOVE CO2 FROM GASEOUS FUEL COMBUSTION EXHAUST - A gas separation process for treating exhaust gases from the combustion of gaseous fuels, and gaseous fuel combustion processes including such gas separation. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, while simultaneously flowing a second portion of the exhaust gas stream across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas back to the combustor. | 09-15-2011 |
20110260112 | MEMBRANE LOOP PROCESS FOR SEPARATING CARBON DIOXIDE FOR USE IN GASEOUS FORM FROM FLUE GAS - The invention is a process involving membrane-based gas separation for separating and recovering carbon dioxide emissions from combustion processes in partially concentrated form, and then transporting the carbon dioxide and using or storing it in a confined manner without concentrating it to high purity. The process of the invention involves building up the concentration of carbon dioxide in a gas flow loop between the combustion step and a membrane separation step. A portion of the carbon dioxide-enriched gas can then be withdrawn from this loop and transported, without the need to liquefy the gas or otherwise create a high-purity stream, to a destination where it is used or confined, preferably in an environmentally benign manner. | 10-27-2011 |
20110262328 | PROCESS FOR SEPARATING CARBON DIOXIDE FROM FLUE GAS USING SWEEP-BASED MEMBRANE SEPARATION AND ABSORPTION STEPS - A gas separation process for treating flue gases from combustion processes, and combustion processes including such gas separation. The invention involves routing a first portion of the flue gas stream to be treated to an absorption-based carbon dioxide capture step, while simultaneously flowing a second portion of the flue gas across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas to the combustor. | 10-27-2011 |
20120137727 | Membrane-Augmented Distillation with Compression and Condensation to Separate Solvents from Water - Disclosed herein are processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps. | 06-07-2012 |
20120137878 | GAS-SEPARATION PROCESSES USING MEMBRANES WITH PERMEATE SWEEP TO RECOVER REACTION FEEDSTOCKS - A gas separation process for treating off-gas streams from reaction processes, and reaction processes including such gas separation. The invention involves flowing the off-gas across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, and passing the permeate/sweep gas mixture to the reaction. The process recovers unreacted feedstock that would otherwise be lost in the waste gases in an energy-efficient manner. | 06-07-2012 |
20120190091 | LIQUID-PHASE AND VAPOR-PHASE DEHYDRATION OF ORGANIC / WATER SOLUTIONS - Disclosed herein are processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol. | 07-26-2012 |
20120272657 | MEMBRANE TECHNOLOGY FOR USE IN A POWER GENERATION PROCESS - Disclosed herein is a power generation process in which a portion of the carbon dioxide generated by gaseous fuel combustion is recycled back to the power generation process, either pre-combustion, post-combustion, or both. The power generation process of the invention may be a combined cycle process or a traditional power generation process. The process utilizes sweep-based membrane separation. | 11-01-2012 |
20130058853 | HYBRID PARALLEL / SERIAL PROCESS FOR CARBON DIOXIDE CAPTURE FROM COMBUSTION EXHAUST GAS USING A SWEEP-BASED MEMBRANE SEPARATION STEP - A gas separation process for treating an exhaust gas stream from a combustion processes. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, and flowing a second portion of the exhaust stream and at least a portion of an off-gas stream from the carbon dioxide capture step across the feed side of a membrane, while flowing a sweep gas stream, usually air, across the permeate side, and then passing the resulting permeate sweep stream back to the combustor. | 03-07-2013 |
20130200625 | Sweep-Based Membrane Gas Separation Integrated With Gas-Fired Power Production And CO2 Recovery - A process involving membrane-based gas separation and power generation, specifically for controlling carbon dioxide emissions from gas-fired power plants. The process includes a compression step, a combustion step, and an expansion/electricity generation step, as in traditional power plants. The process also includes a sweep-driven membrane separation step and a carbon dioxide removal or capture step. The carbon dioxide removal step is carried out on a portion of gas from the compression step. | 08-08-2013 |
20130270177 | Dehydration Processes Using Membranes with Hydrophobic Coating - Processes for removing water from organic compounds, especially polar compounds such as alcohols. The processes include a membrane-based dehydration step, using a membrane that has a dioxole-based polymer selective layer or the like and a hydrophilic selective layer, and can operate even when the stream to be treated has a high water content, such as 10 wt % or more. The processes are particularly useful for dehydrating ethanol. | 10-17-2013 |
20140366724 | MEMBRANE LOOP PROCESS FOR SEPARATING CARBON DIOXIDE FOR USE IN GASEOUS FORM FROM FLUE GAS - The invention is a process involving membrane-based gas separation for separating and recovering carbon dioxide emissions from combustion processes in partially concentrated form, and then transporting the carbon dioxide and using or storing it in a confined manner without concentrating it to high purity. The process of the invention involves building up the concentration of carbon dioxide in a gas flow loop between the combustion step and a membrane separation step. A portion of the carbon dioxide-enriched gas can then be withdrawn from this loop and transported, without the need to liquefy the gas or otherwise create a high-purity stream, to a destination where it is used or confined, preferably in an environmentally benign manner. | 12-18-2014 |