ІNTENSIVE AND ENERGY-SAVING EVAPORATORS WITH PLATE WARMING CHAMBER

Abstract

The modern developments of the evaporators with plate warming chambers for manufactures related to the concentration of caustic soda solutions, phosphoric acid and chloride effluents utilization have been considered. The plate warming chambers different disposition within evaporator was presented. The plate warming chamber construction along with the evaporation sections consisting of three plates are considered. The plates composition and evaporator section are given. It is noted that due to a three special plates composition the section is formed. This section provides the solution overheating and boiling, separation of secondary steam and its direction to the next section heating, while partially evaporated solution flows to the next evaporation stage. The sequential combination of sections allows to develop the evaporator with reusable warming steam heat wherein the number of sections determines the warming steam heat multiplicity of use and its economy per unit of water being evaporated. A paper identifies the constructive decisions on the new intensive plate evaporators developing. They are able to significantly improve the solutions concentration processes taking into account their physico-chemical characteristics, corrosive aggressiveness and salt deposits on the heating surfaces. The technical approaches having constructive and material implementation, and manufacturing technology have been proposed.