Abstract
Oil mist in the pipeline is usually removed by using clean gas (purge). However, the oil mist behavior in the pipe during this purge is not revealed enough. Therefore, we built the test pipeline with 80.7 mm diameter and 145 m long and injected the oil mist at upstream which purged with various flowrate and the change of mist concentration were measured. The results indicate that the concentration profiles of oil mist highly depend on Reynolds Number. It is also found that diffusion process of mist-gas two phase flow and gas-gas flow are qualitatively similar because mist was small enough.
