摘要:
The present invention provides methods and system for power generation using a high efficiency combustor (220) in combination with a CO 2 circulating fluid (236). The methods and systems advantageously can make use of a low pressure ratio power turbine (320) and an economizer heat exchanger (420) and additional low grade heat from an external source (Q) can be used to provide part of an amount of heat needed for heating the recycle CO 2 circulating fluid. Fuel derived CO 2 can be captured and delivered at pipeline pressure while other impurities can be captured.
摘要:
The present invention provides methods and system for power generation using a high efficiency combustor (220) in combination with a CO 2 circulating fluid (236). The methods and systems advantageously can make use of a low pressure ratio power turbine (320) and an economizer heat exchanger (420) and additional low grade heat from an external source (Q) can be used to provide part of an amount of heat needed for heating the recycle CO 2 circulating fluid. Fuel derived CO 2 can be captured and delivered at pipeline pressure while other impurities can be captured.
摘要:
An apparatus for compressing air and producing a carbon dioxide-rich fluid includes an air compressor, an element for bringing the air bound for the air compressor into contact with water to produce humidified air and cooled water, a pipe for sending the humidified compressed air from the air compressor to an installation producing a carbon dioxide-rich gas, a carbon dioxide-rich gas compressor for compressing the carbon dioxide-rich gas, at least one heat exchanger upstream and/or downstream the carbon dioxide-rich gas compressor and pipes for conveying into the heat exchanger water cooled in the contact element and the carbon dioxide-rich gas.
摘要:
The present embodiments are directed towards the cooling of a solvent (15, 86, 222, 314) of a gas treatment system (14) using a fluid flow (30, 32) from an air separation unit (12). In one embodiment, a system (10) is provided that includes an air separation unit (12). The air separation unit (12) has an air inlet (22) configured to receive an air flow (18), an oxygen outlet (30) configured to output an oxygen flow (152, 226, 352, 354), a nitrogen outlet (32) configured to output a nitrogen flow (150, 226, 318, 324) and a cooling system (24, 210, 280, 340) configured to cool the air flow (18) to enable separation of the air flow (18) into the oxygen flow (30) and the nitrogen flow (32), wherein the cooling system (24, 210, 280, 340) is configured to cool a first solvent (15, 86, 222, 314) of a first gas treatment system (14).
摘要:
A system and method for reduction of diluent gaseous nitrogen (DGAN) compressor power in combined cycle power plant. A vapor absorption chiller (VAC) may be utilized to generate and transmit cooled fluid, such as water (160), to one or more heat exchangers located upstream (150) and/or downstream (152,154) of at least one compressor of the DGAN compressor system (124). Utilization of these heat exchangers may cool the temperature of the nitrogen, which may allow for less energy to be expended by the DGAN in compression of the nitrogen.
摘要:
This invention relates to the recovery of carbon dioxide (26) and hydrogen (3,24) concentrated form from shifted a synthesis gas stream comprising hydrogen and carbon dioxide thereby generating a carbon dioxide stream that is sequestered or used for enhanced oil recovery and a hydrogen stream that is used as fuel for a power plant thereby generation electricity. In the process of the present invention a shifted synthesis gas stream is fed to a hydrogen selective membrane separation unit (M101) at a pressure of at least 50 bar gauge and the hydrogen rich permeate stream (3) is fed directly to the combustor of a gas turbine without any requirement to re-compress the hydrogen. The residual gas stream (carbon dioxide enriched stream) from the membrane separation unit is cooled using at least one, preferably, at least two external refrigeration stages (E-101, E-102, E-103, E-104) such that the hydrogen containing offgas (24) is also obtained at above the operating pressure of the combustor of the gas turbine.
摘要:
This invention relates to recovering carbon dioxide (77) and hydrogen (31) in concentrated form from a shifted synthesis gas stream (1) comprising hydrogen and carbon dioxide thereby generating a carbon dioxide stream that is sequestered or used for enhanced oil recovery and a hydrogen stream that is used as fuel for a power plant thereby generating electricity. In the process of this invention a shifted synthesis gas stream is fed to a membrane separation unit (M-1) at a pressure of at least 50 bar gauge and the hydrogen rich permeate stream (3) is fed directly to the combustor of a gas turbine without any requirement to recompress the hydrogen. The residual gas stream (carbon dioxide enriched stream 2) from the membrane separation unit is cooled using at least one, preferably, at least two internal refrigeration stages (Ex-2,Ex-3,Ex-4,Ex-5,Ex-6,Ex-7,Ex-8) such that the hydrogen containing offgas (29) is also obtained at above the operating pressure of the combustor of the gas turbine.
摘要:
Das Verfahren und die Vorrichtung dienen zur Tieftemperaturzerlegung von Luft in einem DestilIiersäulen-System zur Stickstoff-Sauerstoff-Trennung, das eine Hochdrucksäule (2), eine Niederdrucksäule (3) aufweist. Ein Einsatzluftstrom (1) wird verdichtet, gereinigt, abgekühlt und unter einem Druck von 10 bar oder mehr, insbesondere von 12 bar oder mehr, der Hochdrucksäule (2) zugeführt. Eine erste, sauerstoffangereicherte Fraktion (5) und zweite, stickstoffangereicherte Fraktion (13) werden aus der Hochdrucksäule (2) entnommen, entspannt (7) und in die Niederdrucksäule (3) eingeleitet. Der Niederdrucksäule (3) wird eine Sauerstofffraktion (17,18) entnommen und als gasförmiges Sauerstoff-Druckprodukt gewonnen. Eine dritte, flüssige Fraktion aus der Hochdrucksäule wird in einen ersten Kondensator-Verdampfer (20) eingeleitet und mindestens teilweise verdampft. Mindestens ein Tell des in dem ersten Kondensator-Verdampfer (20) erzeugten Dampfs wird in die Hochdrucksäule (2) eingeleitet. Ein Kreislauffluid (26,29) wird in einem Kreislaufverdichter (27) verdichtet. Das verdichtete Kreislauffluid (19) wird in dem ersten Kondensator-Verdampfer (20) mindestens teilweise verflüssigt. Das Kreisauffluid (24',26) wird stromaufwärts des Kreislaufverdichters (27) aus einem zweiten Kondensator-Verdampfer (30) entnommen. Das in dem ersten Kondensator-Verdampfer (20) erzeugte flüssige Kreislauffluid (21) wird mindestens zum Tell in den zweiten Kondensator-Verdampfer (30) zurückgeleitet und dort in indirektem Wärmeaustausch mit einer vierten, gasförmigen Fraktion aus der Hochdrucksäule (2) mindestens teilweise verdampft. Dabei weist die vierte Fraktion einen höheren Stickstoffgehalt als die dritte Fraktion auf.
摘要:
The invention concerns a method which consists in: intake (through 18) of air into said separation unit (16); extracting from said separation unit at least a gas stream (through 20, 26), essentially consisting of an air gas, in particular oxygen or nitrogen, and in directing the or each gas stream towards a combustion chamber (8) of the gas turbine (2); controlling at least one parameter related to the or each gas stream, by acting on a compressor (22, 28) of said gas stream arranged downstream of said air separating unit (16); assigning to the or each parameter a variable setpoint value, based on a value representing the load of the gas turbine (2).