through a channel surrounding the exterior of the stacked modular boilers incoming water is thereby subjected to a super heating process to render it potable and collected on exiting the top of the stacked modular boilers application_number US 60891009 A description referring now to the drawings fig1 6 show components of the modular water purification or desalinization device 10 individually and assembled various preferred modes similar parts are identified by like reference numerals which may be found in one or more of the drawings the device 10 forms the water purification plant of fig1 through the formation and operative connection of a plurality of towers 12 each formed of a plurality of stacked boilers 14 each of the towers 12 is constructed a plurality of the boilers 14 with each having centrally positioned heating chambers 16 the towers 12 in this stacked configuration formation have a surrounding chamber 18 positioned between the sidewalls 20 of each heating chamber 16 and a secondary casing 22 forming the exterior wall of the boiler 14 the surrounding chamber 18 thus surrounds the sidewall 20 defining each individual heating chamber 16 this configuration is particularly preferred in that it produces a chimney effect of upwards flow of both the produced super heated steam from each heating chamber 16 and also the heat employed to create the steam in individual heating chambers 16 and the lower located surrounding chamber 18 in the preferred mode of the system steam is produced by a spraying of a mist 26 of seawater or initially filtered water to remove larger solids the water is preheated to substantially 98 to 100 degrees centigrade in a heat exchanger 30 and subsequently sprayed in a downwardly projected preferably conical mist 26 the mist 26 so injected into the pre heated heating chamber.