Method and wet scrubber for removing particles from gases

A method for removing particles from gas, wherein said method comprises:

• a first gas feeding step for feeding a stream of particles-laden gas into a gas inlet of a wet scrubber,
• a liquid feeding step for feeding liquid into the stream of particles-laden gas to form a stream of liquid- and particles-laden gas,
• an acceleration step for feeding the steam of liquid- and particles-laden gas through a vertically oriented venturi channel of the wet scrubber to raise the velocity of the stream of liquid- and particles-laden gas to form an accelerated stream of liquid- and particles-laden gas, wherein the vertically oriented venturi channel having a circular cross-section form,
• a swirl step for feeding the accelerated stream of liquid- and particles-laden gas into a swirl generator of the wet scrubber for converting the accelerated stream of liquid- and particles-laden gas into a cyclonic stream of liquid- and particles-laden gas,
• a second gas feeding step for feeding the cyclonic stream of liquid- and particles-laden gas from the swirl generator through a gas opening into a vertical cylindrical separation space of a first vertical cylindrical vessel of the wet scrubber for separating liquid and solids from the cyclonic stream of liquid- and particles-laden gas in the cylindrical separation space of the first vertical cylindrical vessel of the wet scrubber by means of the cyclonic motion of the cyclonic stream of liquid- and particles-laden gas and for forming a stream of scrubbed gas, wherein the first vertical cylindrical vessel having an first upper end and a first lower end,
• a gas discharging step for removing the stream of scrubbed gas from the vertical cylindrical separation space of the first vertical cylindrical vessel of the wet scrubber through a gas outlet in fluid connection with the vertical cylindrical separation space of the first vertical cylindrical vessel, wherein the gas outlet is arranged at a level above the gas opening, and
• a collecting step for receiving particles and liquid from the vertical cylindrical separation space of the first vertical cylindrical vessel in a liquid tank of the wet scrubber, wherein the liquid tank is in fluid connection with the first lower end of the vertical cylindrical separation space of the first vertical cylindrical vessel,
• said method further comprising a providing step for providing a second vertical cylindrical vessel having a second upper end and a second lower end,
• by a first arranging step for arranging the second upper end of the second vertical cylindrical vessel in fluid connection with the vertically oriented venturi channel for receiving the accelerated stream of liquid- and particles-laden gas from the vertically oriented venturi channel in the second vertical cylindrical vessel,
• by a second arranging step for arranging, the second vertical cylindrical vessel and the swirl generator at least partly in the cylindrical separation space of the first vertical cylindrical vessel so that the first vertical cylindrical vessel coaxially at least partly surrounds the second vertical cylindrical vessel and the swirl generator, and
• by arranging the swirl generator above the liquid tank.