Polylactic acid solid-phase devolatilization device
The utility model discloses a polylactic acid solid-phase devolatilization device, which comprises a cache preheater, a solid-phase devolatilization device and a liquid-phase devolatilization device, wherein the cache preheater is used for caching and preheating solid-phase polylactic acid to be tre...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses a polylactic acid solid-phase devolatilization device, which comprises a cache preheater, a solid-phase devolatilization device and a liquid-phase devolatilization device, wherein the cache preheater is used for caching and preheating solid-phase polylactic acid to be treated; the crystallization device is used for heating and crystallizing the preheated solid-phase polylactic acid so as to obtain fully crystallized solid-phase polylactic acid; the devolatilization device is used for heating the fully crystallized solid-phase polylactic acid to obtain waste gas containing a volatile component gas phase and devolatilized solid-phase polylactic acid; solid-phase polylactic acid after devolatilization can be discharged from a discharge port of the devolatilization device; the volatile component recovery device is used for receiving the waste gas containing the volatile component gas phase and separating and recovering volatile components from the waste gas to obtain treated waste gas; |
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