Patent ID: 11971167
Assignee: HS MARSTON AEROSPACE LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A fuel tank inerting system, comprising:
a fuel tank;
a device for evaporating liquid fuel received from the fuel tank;
a catalytic device comprising a catalyst for combusting oxygen and fuel vapour and for supplying a product of the combusted fuel vapour to the fuel tank,
wherein the device for evaporating liquid fuel comprises:
a shell;
a porous wick located in the shell so that there is a gap between an outer surface side of the porous wick and an inner surface of the shell;
means for supplying liquid fuel to the porous wick; and
an outlet in the shell for fuel vapour produced in the gap by application of heat from the shell to the liquid fuel in the wick, wherein the fuel vapor is directed from the outlet to a catalytic device,
wherein the wick includes a primary porous wick facing the inner surface of the shell, and a secondary porous wick located within the primary porous wick, the liquid fuel being supplied to the secondary porous wick, then from the secondary porous wick into the primary porous wick, so that the fuel vapour is produced in the gap between the porous wick and the shell by the application of heat from the shell to the liquid fuel in the primary porous wick,
the fuel tank inerting system comprising a means for supplying the heat to the shell of the device for evaporating liquid fuel, wherein the means for supplying the heat comprises a hot air supply obtained by cooling the catalyst of the catalytic device.