【Weekly Topic】How to reduce steam consumption during shutdowns?

1. When shutting down and draining oil, first drain the heavy oil pipeline, and then the light oil pipeline. 2. Purging can be carried out after oil removal is completed; at this time the pipeline still has residual heat, making it easier to remove the oil ； 3. During line cleaning, check the drain valve frequently; purge the main line first and then the secondary line. Stop the purging process once it is complete. 4. For the excess steam from the heating furnace, adjust it to as low a level as possible depending on the actual conditions, provided that the temperature does not exceed the allowed limit. 5. When using steam for desalination, the treatment time should not be too long – this is done both to protect the desalination tank and to reduce unnecessary steam consumption. 6. The drain valve for the pipeline should not be opened too wide; adjust it frequently. 7. When steaming the tower, it is best to do it while there is still some residual heat left after oil removal; this makes it easier to clean the tower thoroughly and saves steam.

None of them are helpful; I’m the only one who’s replied!

1. Perform rapid purging after shutting down to reduce the equipment’s cooling time. 2. It is best to stop work in segments and purge in segments. This ensures that a high steam pressure is applied for rapid purging, thereby reducing condensate in the system. 3. Purge with steam for about 30 minutes; once it is clean and free of oil, purge it again with compressed air or nitrogen for half an hour. Stop when no moisture or oil droplets are detected at the tail end. 4. Disconnect the condensate drainage point at the lower level to drain the water remaining in the equipment or pipes.

In short, ensure proper heat transfer!

Reply to 5# dday: Yes, and we also need to reduce unnecessary use of steam!

A well-formulated parking plan ensures that those with a strong sense of responsibility take charge, remain vigilant, and ensure smooth communication of instructions – thus achieving both safety and steam savings! ! The factor of key people!

1. Perform purging promptly after shutting down the equipment to reduce its cooling time. 2. Carry out purging in stages; do not purge all at once, but rather do it one by one in a sequential manner. 3. Purge the heavy oil lines first, followed by the light oil lines. 4. Turn on the drain valves at the lowest points of the pipelines at regular intervals

For media heavier than light paraffin oil, such as residue and asphalt, it is possible to replace and flush them with light paraffin oil or diesel during shutdowns, followed by steam purging. This reduces the purging time and thus lowers steam consumption. Most importantly, it allows for thorough cleaning of the pipelines, reduces labor intensity, and avoids complications during maintenance；