Combustion system able to operate with recycling of the combustion gas
AssigneeCarbodown
InventorJaouad Zemmouri
Life of this patent
Estimating the term…
Abstract
A combustion system including a bypass which opens to the open air during two different operating modes (“conventional combustion”; “oxy-combustion”), and which has the function, on the one hand, in the two operating modes, when the discharge valve is at least partially open and the recycling valve is closed or open, of allowing air to enter the recycling loop, and which has the function, on the other hand, in the second operating mode, when the discharge valve is closed and the recycling valve is open, of allowing a surplus of the combustion gas produced by the combustion device to be discharged from the recycling loop, the other fraction of the combustion gas produced by the combustion device supplying the mixer.
Claims20
A combustion system comprising:
- a combustion device for combustion of a fuel by using at least one oxidizing gas,
- an oxidizing gas supply unit which is connected to the combustion device and which comprises a mixer and a source of molecular oxygen gas which supplies a molecular-oxygen-rich gas and is connected to a first inlet of the mixer via a device for controlling flow of the molecular-oxygen-rich gas,
- a recycling loop between the combustion device and a second inlet of the mixer, and
- a recycling valve mounted on the recycling loop, a first bypass on the recycling loop comprising a discharge valve, a second bypass on the recycling loop downstream of the first bypass and the recycling valve, and a control unit that is adapted to control the device for controlling the flow of molecular-oxygen-rich gas, the recycling valve and the discharge valve, so as to be able to configure the combustion system in an operating mode selected from at least two different operating modes and to be able to switch from one operating mode to the other, including:
- a first operating mode wherein the recycling valve is closed, the discharge valve is open, and the mixer is not supplied with molecular-oxygen-rich gas from the source of molecular oxygen gas, and
- a second operating mode, wherein the recycling valve is open and the discharge valve is at least partially open or is closed, and the mixer is supplied at least with molecular-oxygen-rich gas supplied by the source of molecular oxygen gas and with at least part of the combustion gas produced by the combustion device,
- wherein the second bypass opens to the open air during both operating modes, and has a function in the two operating modes, when the discharge valve is at least partially open and the recycling valve is closed or open, of allowing air to enter the recycling loop in order to supply the second inlet of the mixer at least with incoming air, and has a function in the second operating mode, when the discharge valve is closed and the recycling valve is open, of allowing a surplus of the combustion gas produced by the combustion device to be discharged from the recycling loop, another fraction of the combustion gas produced by the combustion device supplying the second inlet of the mixer.
Dependencies are inferred from the claim text.