Issues with cleaning the lines when the device is shut down
Thread Content
During the shutdown and line cleaning of the equipment, why is it necessary to clean the heavy oil line first and then the light oil line? ； After the light oil line has been washed out with water, which pipelines require steam purging, and what are the requirements and precautions for such purging? I hope to receive guidance from all the teachers. Thank you!
Cleaning the heavy oil line first is a matter of safety; heavy oil will not expand rapidly upon sudden contact with steam, thereby avoiding the risk of overheating and overpressure. Furthermore, heavy oil is not easy to purge completely, requiring a long purging time. If multiple units stop simultaneously, it is difficult to ensure an adequate supply of steam. The light oil line can first be flushed with water and then purged with steam. Blowing with nitrogen under certain conditions is also a good option.
To put it simply, both purging and washing are required to ensure that the pipes or equipment meet the conditions for maintenance!