Use of the lotus - effect in the process technology

摘要

The subject matter of the invention is an evaporator with a heatable heat exchanger surface area, which provides a self-cleaning microstructured surface has elevations and depressions. Dollars a the microstructured surface of the heat exchanger surface area can be produced by powder coating. The present invention further relates to a method for the evaporation of solutions in an evaporator with a self-cleaning microstructured heat exchanger surface area, wherein the solution to be evaporated preferably viscous or solid constituents dissolved, emulsified or suspended contains. With the inventive evaporators, during the evaporation of the solutions, a caking of the viscous or solid constituents on the heat exchanger surfaces is avoided. As a consequence, such solution to a solvent content of & 5% by weight - be evaporated.