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Thermal treatment, noncatalytic

For noncatalytic thermal treatments of waste, the agglomeration and sintering of fine or sticky particles can require a lowering/rise in operating temperature (that implies a variation in process performance) or a continuous withdrawal of bed material that must be substituted with a make-up of fresh material. [Pg.437]

Extrusion Resins. Extmsion of VDC—VC copolymers is the main fabrication technique for filaments, films, rods, and tubing or pipe, and involves the same concerns for thermal degradation, streamlined flow, and noncatalytic materials of constmction as described for injection-molding resins (84,122). The plastic leaves the extmsion die in a completely amorphous condition and is maintained in this state by quenching in a water bath to about 10°C, thereby inhibiting recrystallization. In this state, the plastic is soft, weak, and pHable. If it is allowed to remain at room temperature, it hardens gradually and recrystallizes partially at a slow rate with a random crystal arrangement. Heat treatment can be used to recrystallize at controlled rates. [Pg.441]


See other pages where Thermal treatment, noncatalytic is mentioned: [Pg.38]    [Pg.33]    [Pg.38]    [Pg.33]    [Pg.429]    [Pg.521]    [Pg.533]    [Pg.191]    [Pg.199]   
See also in sourсe #XX -- [ Pg.33 ]

See also in sourсe #XX -- [ Pg.33 ]




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