초록 ▼

A drill stem stabilizer used in a decoking apparatus that includes a drill stem and a drilling structure on which the drill stem is supported for vertical movement above and within a coke drum. The stabilizer includes a bearing and a support member. The bearing is adapted to guide the longitudinal m

A drill stem stabilizer used in a decoking apparatus that includes a drill stem and a drilling structure on which the drill stem is supported for vertical movement above and within a coke drum. The stabilizer includes a bearing and a support member. The bearing is adapted to guide the longitudinal movement of the drill stem. The support member extends laterally from the bearing and attaches to the drilling structure, and maintains the bearing in a position to guide the drill stem as it is moved into or out of the coke drum. In one embodiment, the drilling structure includes a pair of substantially vertical guide rails, and the support member attaches to the guide rails.

대표청구항 ▼

A drill stem stabilizer used in a decoking apparatus that includes a drill stem and a drilling structure on which the drill stem is supported for vertical movement above and within a coke drum. The stabilizer includes a bearing and a support member. The bearing is adapted to guide the longitudinal m

A drill stem stabilizer used in a decoking apparatus that includes a drill stem and a drilling structure on which the drill stem is supported for vertical movement above and within a coke drum. The stabilizer includes a bearing and a support member. The bearing is adapted to guide the longitudinal movement of the drill stem. The support member extends laterally from the bearing and attaches to the drilling structure, and maintains the bearing in a position to guide the drill stem as it is moved into or out of the coke drum. In one embodiment, the drilling structure includes a pair of substantially vertical guide rails, and the support member attaches to the guide rails. he ultra-pure water to the surface of the object to be washed; stripping from the surface of the object to be washed any fine impurity metals adhering to the surface thereof by means of the high-speed shear flow and a chemical elution reaction with hydroxide ions; and using the high-speed shear flow to prevent the impurity metals thus removed from re-adhering to the surface of the object to be washed. 6. The method for washing with hydroxide ions according to claim 5, wherein spray opening in the high pressure nozzle is a round hole. 7. The method for washing with hydroxide ions according to claim 5, wherein spray opening in the high pressure nozzle is a slit. 8. The method for washing with hydroxide ions according to claim 5, 6, or 7, wherein recovery means is provided on the downstream side of the high-speed shear flow generated by the high pressure nozzle, for recovering any process reaction substances removed from the object to be washed. 9. A method for washing with hydroxide ions in ultra-pure water, comprising the steps of: disposing an object to be washed and a high pressure nozzle a specific distance apart from each other inside a washing tank containing only ultra-pure water; applying a voltage using the high pressure nozzle as the cathode and the object to be washed as the anode; generating a high-speed shear flow of ultra-pure water sprayed from the high pressure nozzle near the surface of the object to be washed; supplying hydroxide ions produced from the ultra-pure water to the surface of the object to be washed; stripping from the surface of the object to be washed any fine impurity metals adhering to the surface thereof by means of the high-speed shear flow and a chemical elution reaction with hydroxide ions; and using the high-speed shear flow to prevent the impurity metals thus removed from re-adhering to the surface of the object to be washed. 10. The method for washing with hydroxide ions according to claim 9, wherein spray opening in the high pressure nozzle is a round hole. 11. The method for washing with hydroxide ions according to claim 9, wherein spray opening in the high pressure nozzle is a slit. 12. The method for washing with hydroxide ions according to claim 9, 10, or 11, wherein recovery means is provided on the downstream side of the high-speed shear flow generated by the high pressure nozzle, for recovering any process reaction substances removed from the object to be washed. 13. A method for washing with hydroxide ions in ultra-pure water, comprising the steps of: disposing an object to be washed and a high pressure nozzle a specific distance apart from each other inside a washing tank containing only ultra-pure water; providing an ion exchange material or catalyst material that increases the amount of hydroxide ions between the processing surface of said object to be washed and the distal end of the high pressure nozzle facing said surface; applying a voltage using the high pressure nozzle as the cathode and the object to be washed as the anode; generating a high-speed shear flow of ultra-pure water sprayed from the high pressure nozzle near the surface of the object to be washed; supplying hydroxide ions produced from the ultra-pure water to the surface of the object to be washed; stripping from the workpiece surface any fine impurity metals adhering to the surface of the object to be washed by means of the high-speed shear flow and a chemical elution reaction with hydroxide ions; and using the high-speed shear flow to prevent the impurity metals thus removed from re-adhering to the surface of the object to be washed. 14. The method for washing with hydroxide ions according to claim 13, wherein spray opening in the high pressure nozzle is a round hole. 15. The method for washing with hydroxide ions according to claim 13, wherein spray opening in the high pressure nozzle is a slit. 16. The method for washing with hydroxide ions according to claim 13, 14, or 15, wherei