Abstract: The invention relates to a method and an apparatus or system for evaporating liquid and comprises spray drying, spray concentration and conditioning (i.e. cooling and/or moistening) of combustion gas or flue gas. Liquid is atomized or sprayed into an evaporating chamber from a liquid spraying or atomizing device arranged centrally in the upper part of the evaporating chamber, and an unobstructed coherent flow of warm gas, such as combustion gas or flue gas is simultaneously directed substantially axially into the evaporating chamber and upwards towards the atomizing device.

Abstract: A spray drying device for the production of powders, more particularly milk powder, a drying chamber 1, an atomizer wheel 5, means 12 for supplying a solution to be dried as well as means 4 for supplying drying air and a cyclone 9 for separating the powder that is produced the air and powder outlet 11, of the cyclone provides a direct communication with a zone adjacent to the atomizer wheel and terminates coaxially with it, said communication providing an unobstructed passage for the cyclone air towards the wheel.