System for eliminating bad-smelling emissions from industrial processes

A process for treating a raw vent gas containing bitumen vapours released by at least one piece of equipment configured to carry out a step of treating a filler powder, wherein said piece of equipment is supplied with said filler powder and/or performs a mixing operation of said filler powder with said bitumen, during said step of treating said filler powder, said raw vent gas turning from a powder-free normal raw vent gas, into a powder-containing raw vent gas that also contains an amount of said filler powder, said process comprising the steps of:

• prearranging a gas-washing device configured to supply a washing solution containing a surfactant;
• prearranging a boiler;
• first conveying said raw vent gas containing an amount of said filler powder into said gas-washing device;
• bringing said raw vent gas containing an amount of said powder into contact with filler said washing solution containing the surfactant;
• removing said amount of filler powder from said powder-containing raw vent gas;
• releasing, by said gas-washing device a purified vent gas substantially free from said filler powder;
• second conveying said purified vent gas into said boiler and burning said purified vent gas, thus obtaining a combustion gas,
• wherein said process comprises a step of:
• directly conveying said normal raw vent gas into said boiler, wherein said step of directly conveying is discontinued and said steps of first and second conveying are carried out while said at least one piece of equipment performs said step of treating said filler powder.