Continuous coarse ash depressurization system

F - Mech Eng,Light,Heat,Weapons – 22 – B

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F22B 1/00 (2006.01) F22B 37/24 (2006.01)

Patent

CA 2758066

A system for depressurizing and cooling a high pressure, high temperature dense phase solids stream having coarse solid particles with entrained gas therein. In one aspect, the system has an apparatus for at least partially depressurizing and cooling the high pressure, high temperature dense phase solids stream having gas entrained therein and a pressure letdown device for further depressurization and separating cooled coarse solid particles from a portion of the entrained gas, resulting in a lower temperature, lower pressure outlet of solid particles for downstream processing or discharge to a storage silo for future use and/or disposal. There are no moving parts in the flow path of the solids stream in the system.

L'invention concerne un système de dépressurisation et de refroidissement de flux de matières solides à phase dense à haute température et haute pression contenant des particules solides grossières avec du gaz entraîné. Dans un aspect, le système comprend un appareil pour dépressuriser et refroidir au moins partiellement le flux de matières solides à phase dense à haute température et haute pression comportant du gaz entraîné et un dispositif de réduction de pression pour encore plus dépressuriser et séparer les particules solides grossières d'une partie du gaz entraîné, résultant en une température inférieure, une sortie de pression inférieure des particules solides pour traitement ou décharge aval vers un silo de stockage en vue de leur réutilisation et/ou mise au rebut. Il n'y a pas de pièces mobiles dans le trajet d'écoulement des flux de matières solides dans le système.

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