Patent ID: 6096170
Filing Date: 2000-08-01
Classification: B01J,D21C

Abstract:
A pressure vessel with an output arrangement for use with pulp bleaching using peroxide at high temperature and high pressure, comprising:a pressure vessel housing having a first upper end and a second lower end;an output arrangement disposed at the first upper end of the pressure vessel, the output arrangement comprising:at least one scraper arm;at least one cleaning device;a driving axle in operative engagement with the scraper arm;a driving arrangement attached to the driving axle, the driving arrangement in operative engagement with the cleaning device so that both the scraper arm and the cleaning device are rotatable with the same driving axle;a bearing rotatably attached to the driving axle;a supporting structure for supporting the driving arrangement;at least one normally opened first outlet opening defined in an outer wall of a curved gable of the pressure vessel at the first upper end thereof;a normally closed second outlet opening defined in the curved gable;the second outlet opening having a center and the first outlet opening having a center, the center of the first outlet opening being disposed a first distance from a center of the driving axle and the center of the second outlet opening being disposed a second distance from the center of the driving axle, the first distance being approximately the same as the second distance so that the cleaning device is being permitted to clean both the first and second outlet openings when the cleaning device is rotated, the scraper arm extending downwardly and away from the first and second outlet openings.