Quarzglas Komponenten und Service QCS GmbH

Surface Evaporator

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A helically electrical filament winding, covered by opaque fused/ transparent silica, with a big surface which is assembled in an opaque fused silica paraboloid dish with a grip, permits an indirect temperature rise heating of liquids by infra-red radiation. In this way, rapid, economical evaporation or concentration of liquids is possible. According to this principle, only the upper surface of the liquid to evaporate is heated very quickly as most of the radiation heat is absorbed already in low depth of penetration and, thus, it enables an economical, regular evaporation. Contrary to simmering evaporation, there is no substance loss because of splashing or super-boiling.

In this way, rapid, economical evaporation or concentration of liquids is possible.

According to this principle, only the upper surface of the liquid to evaporate is heated very quickly as most of the radiation heat is absorbed already in low depth of penetration and, thus, it enables an economical, regular evaporation. Contrary to simmering evaporation, there is no substance loss because of splashing or super-boiling.

As surface evaporators are exclusively made of opaque fused/ transparent silicia, it is possible to make sensibly use of this material and its many advantages, as there are good IR-permeability, heat resistance, resistance to changes of temperature, extremely low electrical conductivity, exceptionally high chemical purity and resistance. These advantages of the material permit an economical evaporation of acids and other liquid chemical, except for hydrofluoric acid, phosphorus acid, and liquids with high alkali contents.

Electrical Safety
The opaque fused silicia encasing tube is a very good electrical insulator – protection against electric-shock hazard, optimal electrical safety by means of earthing of the inner tube.

Surface evaporators meet the EG standard 89/336/EWG and EG standard 73/23/EWG.

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