Method for lubricating interior of heat exchanger tube

摘要

A method of lubricating an interior of a tube includes applying a lubricant including a mixture of an additive and a solvent into an interior of a tube. A flow of drying agent is injected into a first end of the tube to force the solvent from the interior of the tube via a second end of the tube thereby leaving a coating of additive at the interior of the tube. The drying agent is heated to remove additional solvent from the interior of the tube via evaporation.

主权项

1. A method for lubricating an interior of a heat exchanger tube, comprising:
applying a lubricant including a mixture of an additive and a solvent onto an interior of the tube; injecting a first flow of a drying agent into a first end of the tube to force a first portion of the solvent from the interior of the tube via a second end of the tube; heating the flow of the drying agent to remove additional solvent from the interior of the tube via evaporation; forming the tube to a selected shape after injection of the first flow of the drying agent; and injecting a second flow of the drying agent into the tube to force a second portion of the solvent from the interior of the tube, thereby leaving a coating of the additive on the interior of the tube.