| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaning method of machine having communication pipeline, which can clean simply, and has an excellent cleaning ability. SOLUTION: In this cleaning method of a machine having a communication pipeline, one side pipeline of a treatment liquid tank 2 is connected to a diaphragm pump 3, and a pipline 6 output from the diaphragm pump 3 is connected to the inlet of a communication pipeline, and on the other hand, the other side pipeline 7 connected to a filter 4 is connected to the outlet of the communication pipeline, in a cleaning means. A circulating route of treatment liquid is formed by recovering the treatment liquid to the treatment liquid tank2 through filters 4 and 5, and a cleaning liquid is communicated to this circulating route. As an additive added to the treatment liquid, an additive containing a corrosion preventive agent, a dispersing agent, and a high polymer material is used, and when an oil pipe is cleaned, an organic solvent, especially a petroleum solvent, is preferable. |
