The invention relates to a method for cleaning a gas, comprising the step of guiding said gas to be cleaned through a supply line and contacting said gas with a liquid and a step of injecting the liquid into the gas flow under pressure over a complete flow area of said supply line. The method is characterized in that the gas to be cleaned is fed into the gas cleaning compartment from a gas supply line, said gas cleaning compartment having a peripheral wall, and in that the gas cleaning compartment at a downstream position of the gas supply line is provided with at least one injection nozzle provided in the peripheral wall for injecting the liquid into the gas cleaning compartment and against an opposite wall part, said method further comprising the step of discharging the liquid and the contaminants contained therein via the wall of the gas cleaning compartment. The invention also relates to a device for performing the method.