Abstract:
The invention concerns a method for generating energy, which consists in conveying to an air separation apparatus (5) air from a compressor (1) coupled to an expansion machine (3). A nitrogen-enriched gaseous flow (11) containing between 3 and 18 % of oxygen is conveyed to a combustion chamber (19) with a combustible flow (17) and the combustion gases (33) are expanded in the expansion machine. Optionally air from an auxiliary compressor (21) can be conveyed to the combustion chamber.
Abstract:
The invention concerns an installation comprising at least one furnace (FM) and an air distilling apparatus including at least a mean pressure column (MP) and a mixing column (CM) supplying oxygen (O) to the furnace, the furnace and the apparatus being fed by a common fan blower (S), the mixing column (CM) receiving compressed air through a booster (C) coupled with a cryogenic turbine (T) expanding a fluid in the distillation apparatus, the booster/turbine assembly (C-T) being coupled with an auxiliary assist-unit (EM).
Abstract:
The present invention relates to a process and an integrated plant to be used in this process for the preparation of synthetic fuel (synfuel), liquefied natural gas, and production of electrical energy. A part of the energy produced is used for the operation of the energy requiring steps of the process, whereas the residual part is exported for other purposes.
Abstract:
A gas treatment method (100) is described, which includes an oxidative process (4) providing waste heat, wherein a first gas mixture containing an oxidable component is provided, wherein the first gas mixture and oxygen are introduced into a oxidating unit (41), wherein at least a part of the oxidable component in the first gas mixture is oxidised in the oxidating unit (41), wherein the first gas mixture and/or a second gas mixture used in providing the first gas mixture and/or a third gas mixture produced from at least a part of the first gas mixture using the oxidating unit (41) is or are treated in one or more gas treatment units (2) operated using a first amount of steam, wherein in a first mode of operation the oxygen introduced into the oxidating unit (41) is at least in part provided by an air separation unit (7) comprising a compressor (71) operated using a second amount of steam, wherein in the first mode of operation the first amount of steam is provided by a first steam generator (10) operated using at least a part of the waste heat, and wherein in the first mode of operation the second amount of steam is provided by a second steam generator (20) independently operable from the waste heat. Said operating the compressor (72) using the second amount of steam comprises expanding the second amount of steam in a steam turbine (72) mechanically coupled to the compressor (71). Furthermore, a second mode of operation is performed in which at least a part of the first amount of steam provided by the first steam generator (10) in the first mode of operation is instead provided by the second steam generator (20), and in which a total amount of steam smaller than the second amount of steam, or no steam, is provided by the first steam generator (10). A corresponding apparatus is also described.
Abstract:
Die Erfindung betrifft ein Verfahren zum Betrieb einer Gasturbine (11 ) in einem Kombikraftwerk (40), bei welchem Verfahren durch die Gasturbine (11 ) Luft angesaugt, verdichtet und die verdichtete Luft zur Verbrennung eines aus Kohle gewonnenen Syngases einer Brennkammer (18, 19) zugeführt wird, wobei ein Teil der verdichteten Luft in Sauerstoff und Stickstoff zerlegt wird. Ein verbesserter Wirkungsgrad wird dadurch erreicht, dass eine Gasturbine (11 ) mit Zwischenüberhitzung verwendet wird, welche zwei Brennkammern (18, 19) und zwei Turbinen (16, 17) umfasst, wobei in der ersten Brennkammer (18) Syngas mit der verdichteten Luft verbrannt und die entstehenden heissen Gase in der ersten Turbine (16) entspannt werden. In der zweiten Brennkammer werden Syngas mit den aus der ersten Turbine (16) kommenden Gasen verbrannt und die entstehenden heissen Gase in der zweiten Turbine (17) entspannt, und die Erzeugung des Syngases so durchgeführt, dass das erzeugte Syngas direkt der ersten Brennkammer (18) zugeführt werden kann.
Abstract:
Die Erfindung betrifft ein Verfahren zum Betrieb einer Gasturbine (11) in einem Kombikraftwerk (40), bei welchem Verfahren durch die Gasturbine (11) Luft angesaugt und verdichtet wird, welche zur Verbrennung eines aus Kohle gewonnenen Syngases einer Brennkammer (18, 19) zugeführt wird und wobei ein Teil der verdichteten Luft in Sauerstoff und Stickstoff zerlegt wird. Ein verbesserter Wirkungsgrad wird bei diesem Verfahren dadurch erreicht, dass eine Gasturbine (11) mit Zwischenüberhitzung und zwei Brennkammern (18, 19) und zwei Turbinen (16, 17) verwendet wird. In der ersten Brennkammer (18) wird Syngas unter Einsatz der verdichteten Luft verbrannt und die entstehenden heissen Gase werden in der ersten Turbine (16) entspannt. In der zweiten Brennkammer wird Syngas unter Einsatz der aus der ersten Turbine (16) kommenden Gase verbrannt und die entstehenden Gase werden in der zweiten Turbine (17) entspannt, wobei der bei der Luftzerlegung entstehende Stickstoff der Gasturbine (11) zur Verdichtung zugeführt wird.
Abstract:
In an integrated process an air separation unit A receives compressed air from the compressor S of a blast furnace HF and the compressor K of a gas turbine C. Nitrogen enriched air N from the air separation unit is sent to the gas turbine and oxygen enriched air O from the air separation unit is sent to the blast furnace.
Abstract:
Power generation apparatus is described and claimed, the apparatus comprising: a generator (20); a gas turbine (12) comprising a combustor (13), a compressor (11) having an air feed and being operable to produce compressed air from said air feed, means for delivering a portion of said compressed air into the combustor, and an expander (12) arranged to receive hot combustion products from the combustor (13) and to drive the compressor (11) and the generator (20) with work produced from the expansion of the hot combustion products; extraction means (112) for extracting from the gas turbine a remaining portion of said compressed air; fuel gas supply means for supplying fuel gas to the combustor, including a gasification vessel (3) inside which fuel gas is produced by the partial oxidation of a carboniferous feedstock; an air separation unit (5) operable to produce an oxygen-enriched product from a compressed air feed and arranged to supply at least a portion of said oxygen-enriched product to the gasification vessel for said partial oxidisation; and air compression means, independent of the gas turbine compressor, arranged to provide said compressed air feed to the air separation unit, the power generation apparatus comprising no means for feeding compressed air extracted from the gas turbine to the air separation unit. A Clean Power Generation (CPG) facility comprising the power generation apparatus, and a corresponding method for generating power are also described and claimed.
Abstract:
An air separation apparatus comprises a compressor (2) having stages (4, 6, 8 and 10) in series, a first outlet (16) from a chosen stage (8) upstream of a final stage (10) of the compressor (2), a second outlet (40) from the final stage (10) of the compressor (2), an air purifier (18) having an inlet communicating with the first outlet (16) and an outlet (24) communicating with first and second flow paths (26 and 36) in parallel with one another, wherein the first flow path (26) leads via a heat exchanger (28) to at least one rectification column (30) for separating the air, and the second flow path (36) leads via the stage (10) to the second outlet (40).
Abstract:
A method for extracting from gases of combustion and flue gases which have boiling points beneath -160 DEG C at least one contaminating other gas which has a boiling point within the range -140 to 25 DEG C. The combustion gas and the flue gas are cooled with the aid of at least one gas stream in a cryogenerator which functions in accordance with an expansion process. The gas stream has a temperature which is sufficiently low to condense the contaminating gas. The contaminating gas is then collected for possible further treatment. An arrangement for carrying out the method includes an air-seperation apparatus and at least one heat-exchanger (160A or 160B) for cooling the combustion gas and the flue gas in the apparatus with the aid of cold gas flows. The arrangement also includes a conduit (165) for delivering combustion gas and flue gas to the heat-exchanger or exchangers (160A, 160B), cooling gas delivery conductors (140, 170), a conductor (180) for discharging purified gas, and a conductor (185) for discharging condensed contaminated gases.