Method and apparatus for separating particulate composition carried by a gaseous stream

A method for separating solid and/or liquid particles from a gaseous stream, comprising the steps:

• introducing a gas stream inside a washing chamber, said gas being introduced into said washing chamber according to a direction substantially transversal with respect to a longitudinal direction along the extension of the chamber, said gas having a substantially swirling flow along said extension direction;
• delivering a drop shaped liquid inside the washing chamber by sequentially delivering, in a direction of advancement of the gas stream, first diameter drops, then second diameter drops larger than the first diameter drops, then third diameter drops smaller than second diameter drops, and finally fourth diameter drops larger than the third diameter drops, to allow a separation from the gas flowing of at least a portion of particulate particles located into the gas stream, by incorporation into the drop through a physical contact between the liquid drop and the particulate, in a solid or liquid form;
• conveying the gas stream towards the outside of the washing chamber;
• and
• removing a liquid, comprising the separated particles, collected in a lower portion of said washing chamber, said collected liquid being collected by gravitational motion or by condensation of the washing liquid after said separating step,
• wherein said delivering step occurs by making the delivered liquid to a preset pressure value, said preset pressure value being a function of a dimensional value of the particulate to be separated, so as to allow, during said separating step, a physical interaction between the delivered liquid drops and the particulate particles,
• wherein an evaporation step of said drops is provided, allowing a reduction in the average diameter of the drops, and
• wherein a condensation step of said drops is provided, said condensation occurring around the particulate particles.