B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
B08B 9/043 (2006.01) B08B 13/00 (2006.01) F16L 55/28 (2006.01) F16L 55/44 (2006.01) F28G 1/10 (2006.01)
Patent
CA 2732387
A pipe pig for refin-ery heater tubes is disclosed The pipe pig has arcuate cleaning elements which form an expandable circumfer-ence Each of the arcuate cleaning el-ements has a scraping edge A spring element biases the arcuate cleaning elements radially outward The pipe pig may have staictural components made from titanium alloys and arcu-ate cleaning elements made from car-bon-carbon composites A method for cleaning coking out of refinery heater tubes using the pipe pig is also dis-closed
L'invention porte sur un racleur de tuyau pour tubes d'élément chauffant de raffinerie. Le racleur de tuyau comporte des éléments de nettoyage en forme d'arc qui forment une circonférence extensible. Chacun des éléments de nettoyage en forme d'arc comporte un bord de raclage. Un élément de ressort sollicite les éléments de nettoyage en forme d'arc radialement vers l'extérieur. Le racleur de tuyau peut comporter des éléments structuraux réalisés en alliages de titane et des éléments de nettoyage en forme d'arc réalisés en composites carbone-carbone. L'invention porte également sur un procédé de nettoyage des dépôts charbonneux de tubes d'élément chauffant de raffinerie à l'aide du racleur de tuyau.
Been Jantje
Crick David Andrew
Lu Baotong
Metzker Guenther
Lambert Intellectual Property Law
On Stream Technologies Inc.
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