Power plant with emergency fuel system
AssigneeSiemens Aktiengesellschaft
InventorsManfred Nixdorf, Karl-Heinz Persicke, Wilhelm Thiele
Life of this patent
Estimating the term…
Abstract
A method for operating a power plant having a gas turbine and an emergency fuel system where in a normal operating state, gas is supplied from a supply line to the combustion process of the gas turbine, and in addition gas is supplied from the supply line to a gas liquefaction plant where it is liquefied, forming a liquid gas which is stored in a liquid gas store. In special operating state, liquefied gas is drawn from the liquid gas store and is evaporated in an evaporator, and is fed in the gaseous state into the combustion process of the gas turbine.
Claims9
A method for operating a power plant comprising a gas turbine and an emergency fuel system, the method comprising:
- receiving into a supply line a supply gas from an external source, wherein the supply line is connected to a combustion process of the gas turbine, and wherein the supply line comprises a liquefaction process outlet,
- a liquefaction line connected to a gas liquefaction plant and comprising a liquefaction line inlet connected to the liquefaction process outlet,
- in a first operating state, feeding the supply gas from the supply line to the combustion process of the gas turbine, and, in addition, feeding the supply gas from the liquefaction process outlet to the liquefaction line to supply the gas liquefaction plant and liquefying the supply gas therein, wherein a composition of the supply gas is not changed, wherein a liquefied gas is formed and stored in a liquefied gas tank,
- in a second operating state, extracting the liquefied gas from the liquefied gas tank, and evaporating the liquefied gas in an evaporator to form an evaporated gas, and feeding the evaporated gas into the combustion process of the gas turbine, and
- in the second operating state, feeding the evaporated gas from the liquefied gas tank back into the supply line in order to compensate for pressure fluctuations in the supply line or, in the event of a complete loss of supply gas, to supply other consumers which are connected to the supply line with the evaporated gas.
A method for operating a power plant comprising a gas turbine and an emergency fuel system, the method comprising:
- feeding supply gas from an external source to a combustion process of the gas turbine in a first operating state,
- feeding a flow of the supply gas from the external source to a gas liquefaction plant without changing a composition of the flow of the supply gas therebetween, liquefying the supply gas in the gas liquefaction plant to form a liquefied gas, and storing the liquefied gas in a liquefied gas tank in the first operating state, and
- extracting the liquefied gas from the liquefied gas tank, evaporating the liquefied gas in an evaporator to form an evaporated gas, and feeding the evaporated gas into the combustion process of the gas turbine in a second operating state,
- wherein in the first operating state the power plant is supplied with supply gas from the external source, and
- wherein in the second operating state the evaporated gas is fed back into a supply line that leads to the combustion process.
Dependencies are inferred from the claim text.