A tray for a mass-transfer column, where the tray is configured to allow contact between a liquid phase and a gas phase and the tray comprises: - a tray inlet (131, 132) via which the tray is supplied with the liquid phase; - a tray outlet (141, 142) via which the liquid phase runs out from the tray; - first guide means for guiding the liquid phase, where the first guide means form a first flow path (21, 22) along which the liquid phase flows from the tray inlet (131, 132) to the tray outlet (141, 142), - an inlet (15, 151, 152) for a temperature-control fluid; - an outlet (16, 161, 162) for the temperature-control fluid; and - second guide means for guiding the temperature-control fluid for heat exchange with the liquid phase, where the second guide means form a second flow path (31, 32) which overlaps with the first flow path and leads from the inlet (15, 151, 152) to the outlet (16, 161, 162) and the temperature-control fluid flows along the second flow path (31, 32) in a direction opposite to the flow direction of the liquid phase, where - the tray inlet comprises a first entrance; - the tray outlet comprises a first exit; and the first guide means comprise a spiral guide weir arrangement which in a spiral fashion forms the first flow path between the first entrance and the first exit, wherein - the tray inlet further comprises a second entrance; - the tray outlet further comprises a second exit; and - the spiral guide weir arrangement forms the first flow path (21, 22) with a spiral first transport path between the first entrance and the first exit and a spiral second transport path, running counter to the first transport path, between the second entrance and the second exit, - wherein the first entrance is arranged at the periphery of the tray, - wherein the first exit is arranged in the center of the tray, - wherein the inlet for the for the temperature-control fluid is provided at the periphery of the tray, - wherein the outlet for the for the temperature-control fluid is also provided at the periphery of the tray, - wherein the second guide means comprise a deflection device arranged in the center of the tray, - and wherein in the first flow path, in which the liquid phase flows from the first entrance to the first exit, the temperature-control fluid flows in a spiral fashion from the deflection device to the outlet. - a tray inlet (131, 132) via which the tray is supplied with the liquid phase; - a tray outlet (141, 142) via which the liquid phase runs out from the tray; - first guide means for guiding the liquid phase, where the first guide means form a first flow path (21, 22) along which the liquid phase flows from the tray inlet (131, 132) to the tray outlet (141, 142), - an inlet (15, 151, 152) for a temperature-control fluid; - an outlet (16, 161, 162) for the temperature-control fluid; and - second guide means for guiding the temperature-control fluid for heat exchange with the liquid phase, where the second guide means form a second flow path (31, 32) which overlaps with the first flow path and leads from the inlet (15, 151, 152) to the outlet (16, 161, 162) and the temperature-control fluid flows along the second flow path (31, 32) in a direction opposite to the flow direction of the liquid phase, where - the tray inlet comprises a first entrance; - the tray outlet comprises a first exit; and - the tray inlet further comprises a second entrance; - the tray outlet further comprises a second exit; and - the spiral guide weir arrangement forms the first flow path (21, 22) with a spiral first transport path between the first entrance and the first exit and a spiral second transport path, running counter to the first transport path, between the second entrance and the second exit, - wherein the first entrance is arranged at the periphery of the tray, - wherein the first exit is arranged in the center of the tray, - wherein the inlet for the for the temperature-control fluid is provided at the periphery of the tray, - wherein the outlet for the for the temperature-control fluid is also provided at the periphery of the tray, - wherein the second guide means comprise a deflection device arranged in the center of the tray, - and wherein in the first flow path, in which the liquid phase flows from the first entrance to the first exit, the temperature-control fluid flows in a spiral fashion from the deflection device to the outlet.