A firetube scraper device comprising: at least one carriage assembly mounted on the firetube; a drive line and drive means for displacing the carriage assembly longitudinally along the firetube; wherein said carriage assembly surrounding the entire circumference of the firetube and Comprising at least one row of scraper fins, each of said scraper fins having an inner surface adapted to frictionally engage an outer firetube surface defined by at least an upper portion of the surface of the firetube exposed to contaminants deposited onto a firetube surface.
申请公布号
CA2936604(A1)
申请公布日期
2017.01.22
申请号
CA20162936604
申请日期
2016.07.20
申请人
CANADIAN NATURAL RESOURCES LIMITED
发明人
KREWULAK, KEN;SCOTT, STEPHEN;FIOLKA, KYLE;BUCHOLTZ, MICHAEL