Cooling aggressive processing

Epilation is required for permanent hair removal. The most effective epilation process is electrolysis or a similar procedure. Epilation can also be achieved by pulling the fibers out of the skin. Eor this purpose, wax mixtures (rosia and beeswax) are blended with Hpids, for example, oleyl oleate, which melt at a suitable temperature (about 50—55°C). The mixture is appHed to the site (a cloth tape may be melted iato the mass) and after cooling is rapidly pulled off the skin. A similar process can be carried out with a tape impregnated with an aggressive adhesive. 

Almost all cooling water system deposits are waterborne. It would be impossible to list each deposit specifically, but general categorization is possible. Deposits are precipitates, transported particulate, biological materials, and a variety of contaminants such as grease, oil, process chemicals, and silt. Associated corrosion is fundamentally related to whether deposits are innately aggressive or simply serve as an occluding medium beneath which concentration cells develop. An American... 

Important applications for titanium have been developed in processes involving acetic acid, malic acid, amines, urea, terephthalic acid, vinyl acetate, and ethylene dichloride. Some of these represent large scale use of the material in the form of pipework, heat exchangers, pumps, valves, and vessels of solid, loose lined, or explosion clad construction. In many of these the requirement for titanium is because of corrosion problems arising from the organic chemicals in the process, the use of seawater or polluted cooling waters, or from complex aggressive catalysts in the reaction. 

Finally the molten salt-cooled reactor (MSR) and supercritical water-cooled reactor (SCWR) are promising prospects, but need extensive material developments. They offer challenging operating conditions, mostly due to compatibility with the process fluids, as will be shortly described further. Limited data are available to allow for an optimized selection of construction materials. Austenitic stainless steels do not clearly appear to be the best choice for these applications, due to strong interactions with the aggressive environments. 

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