Method and installation for energy production by means of a gas turbine associated with an air separation unit
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes George Claude
InventorJean-Marc Peyron
Life of this patent
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Abstract
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).
Claims20
A method for producing energy using a gas turbine (2) associated with an air separation unit (16), in which method air is admitted (via 18) into said separation unit (16), at least one gaseous stream essentially consisting of an air gas, which of oxygen or of nitrogen, is extracted from said separation unit (via 20, 26), and the gaseous stream is directed toward a combustion chamber (8) of the gas turbine (2), in the case of nitrogen, or toward a gasifier (32) in the case of oxygen, characterized in that at least one parameter associated with the or each gaseous stream is controlled by direct action on a compressor (22, 28) for this gaseous stream which is located downstream of said air separation unit (16), and in that a variable setpoint value that varies as a function of a value representative of the load on the gas turbine (2) is assigned to the or each parameter.
The method as claimed in one of the preceding claims, characterized in that the parameter associated with said or with at least one of said gaseous streams is the pressure.
An installation for producing energy by means of a gas turbine (2) associated with an air separation unit (16), this installation comprising means allowing at least one gaseous stream essentially consisting of an air gas, which is oxygen or nitrogen, to be extracted from the separation unit, and means (20, 26) for conveying the gaseous stream toward a combustion chamber (8) of the gas turbine (2) in the case of nitrogen or toward a gasifier (32) in the case of oxygen, characterized in that control means (46, 52;
- 56, 60) are provided for controlling at least one parameter associated with the or with each gaseous stream, these means being able to act directly on a compressor (22, 28) for this gaseous stream, said control means having a variable setpoint value that varies as a function of a value representative of the load (14) on the gas turbine.
Dependencies are inferred from the claim text.