PROCESS FOR DECOKING A DELAYED COKER USING A FLEXIBLE PIPE AND APPARATUS THEREOF

摘要

The present invention relates to the improvement of decoking a residual oil delayed coker and apparatus thereof. When decoking, the roller of the flexible pipe winch (3) is rotated to vertically ascend or descend the decoking flexible pipe (6) in the coker wherein the high pressure water rotates the turbine blades of the turbine-reductor (7) which brings the drilling and cutting combination unit (8) into rotation so as to drill a through hole in the coke accumulation and then conduct decoking operation. The drilling and cutting combination unit (8) is equipped with a pressure control unit so that the switchover of the drilling and cutting operations can be automatically performed. The present invention has eliminated the use of derrick, saved a significant quantity of steel and investment, decreased the number of equippments, made the operation easier, needed less time for decoking and therefore further enhanced the decoking efficiency.