1. Structure: The external preheater, condenser and first-effect evaporator are all designed with double tube sheets, and the inner tube sheet is expanded and welded externally to avoid cross contamination.
2. Separation device: three-stage separation with falling film evaporation, gravity separation and spiral flow.
3. Material: all parts in contact with raw water, water for injection and secondary pure steam are made of SS316L.
4. Thermal preservation and insulation: the evaporator, preheater, and condenser all use aluminum silicate needle punched blanket, which has good extensibility, light weight, excellent heat insulation and strong stability.
5. Surface treatment: The internal and external surfaces are electrochemically polished to effectively ensure the smoothness of the stainless steel surface. The external surface can also be sandblasted.
6. Energy saving and consumption reduction: Since the secondary steam is used step by step in each effect, the multi-effect water distiller has a high utilization rate of industrial steam and has obvious energy saving effects. With the increase in the number of evaporators, this energy saving effect becomes more obvious. At the same time, the amount of cooling water is also greatly reduced as the effect number increases. The five-effect distiller produced by our company uses a small amount of cooling water, and the six-effect distiller does not require cooling water.
7. Use stainless steel pipes as far as possible to directly stretch the elbow to avoid welding. Welding parts of pipelines and accessories should be automatically welded with argon protection (single-side welding and double-side forming process) to ensure welding quality, and electrochemical polishing after welding.
8. Provide verification materials such as endoscopic inspection photos, solder joint diagrams, pressure test and pickling passivation reports, and system design documents.
9. The control system adopts HMI+PLC fully automatic control, and the operation interface is simple. Various communication modes are available. Control system authority levels: at least three levels of authority can be set.
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