Liquid fuel supply system for a combustion system, comprising at least one storage tank for liquid fuel capable of supplying at least one nozzle connected to a combustion chamber of the combustion system, said liquid fuel supply system comprising a first piping section disposed downstream of the tank and a second piping section disposed downstream of the first piping section and upstream of said nozzle, said first piping section including at least one pressurizing means, and at least one point of injection or entry of a water-soluble product, wherein the second piping section comprises a device for mixing and distribution of flow and in that the flow regime upstream of said device is configured to create an emulsion and spread the emulsion flow to at least one piping connected to said nozzle.