Device and method for heat and mass-exchange between gas and liquid

A device for mixing fluids, comprising:

• a housing;
• a substantially upward path for a first fluid;
• a plurality of nozzles forming a substantially two-dimensional grid across the path for the first fluid to pass through the grid;
• and
• an injecting nozzle positioned above the grid for a second fluid into the path above the grid;
• wherein the plurality of nozzles forming a substantially two-dimensional grid comprise a three-dimensional structure with a plurality of axial swirler blades inside the three-dimensional structure;
• wherein the nozzles are shaped and positioned within the grid so as for the first fluid passing through the grid to form within the path above the grid for each of the plurality of nozzles at least one jet of the first fluid, wherein a mixing layer is formed above the grid;
• for a plurality of the jets to interact to form within the path above the grid non-linear flow of the first fluid;
• and for the non-linear flow of the first fluid to contact and interact within the path above the grid with the second fluid injected into the path, wherein the first fluid and the second fluid are mixed within the mixing layer above the grid.