Base for a mass transfer column

A tray for an absorption column for preparing nitric acid, having gas passage openings distributed over the tray (1), and having at least one baffle (11) for flow diversion of liquid flowing on the tray, it being possible for the tray (1) to be fed with a liquid via at least one entry (3), and wherein heat transfer elements (13) are disposed on the tray (1) along the flow paths (7;

• 9) in each case, the heat transfer elements being designed as cooling elements, wherein the tray has at least one entry (3), at least one separating weir (5), which separates the inflowing liquid into two streams, and at least two exits (12), or has at least two entries (3) and at least one exit (12) for the liquid, each stream flowing along a flow path (7;
• 9) to an exit (12), and wherein the entry (3) comprises a liquid distributor (21) which is disposed above the tray (1) and has outlet openings (25) through which the liquid is distributed uniformly onto the flow paths (7;
• 9).