Evaporation unit for a brine recycling plant

An evaporation container (300) comprising a frame (67) and an enclosure (70) enclosing an inner volume of the evaporation container (300), wherein the evaporation container (300) further comprises a holding plate (66) positioned in an upper part of the evaporation container (300), wherein the evaporation container (300) is configured to receive a brine (65) on its holding plate (201), and wherein the evaporation container (300) comprises:

• evaporation units (200), wherein each of the evaporation unit (200) comprises:
• three concentrically arranged tubes (19;
• 20;
• 21)—an inner tube (20), an intermediate tube (21) and an outer tube (19);
• an evaporation head (36) comprising:
• connectors (72) configured to hold all three concentrically arranged tubes (19;
• 20;
• 21) by a respective end of each tube and provide concentric arrangement,
• brine inlets (68) positioned around the evaporation head (36) so that the brine (65) on the holding plate (201) can flow into the evaporation head (36) and further down along inner and outer surfaces of the inner tube (20), inner and outer surfaces of the intermediate tube (21), and along Inner surface of the outer tube (19);
• a central pipe air inlet (64) extending through the evaporation head (36) so that air can flow through the evaporation head (36) and further into the inner tube (20);
• an intermediate pipe air inlet (63) extending through the evaporation head (36) so that the air can flow through the evaporation head (36) and further into the intermediate tube (21);
• and
• an outer pipe air inlet (61) extending through the evaporation head (36) so that the air can flow through the evaporation head (36) and further into the outer tube (19);
• and
• a fan (23), wherein the fan (23) is configured to maintain a pressure within the inner volume of the evaporation container (300) in a range of 180 to 300 Pa to maintain an air flow (210;
• 14-18) in gaps between the concentrically arranged tubes (19;
• 20;
• 21) of the evaporation unit (200) to facilitate evaporation of a water in the brine (65).