Regarding the shutdown of the atmospheric and vacuum distillation unit
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Previously, when the unit was shut down, oil was removed by first replacing it with diesel and then using steam for purging; this time, the method of using water to displace the oil was adopted. I would like to know the advantages of this approach. . . Let’s communicate more often!
No experts have shared their opinions either, haha. . . . I must have made the wrong choice; I should seek help. . . . .
Oil pushed by water is usually in light oil pipelines, such as naphtha; using steam directly would cause the oil in the pipelines to vaporize, and static electricity during transportation could pose a danger. Therefore, water is generally used to push gasoline, which makes things safer!
Under normal circumstances, the water atop the heavy oil in the pipeline should not be completely removed; water-based chemical cleaning should be used instead
Right, right. . . But behind that is a water-based chemical cleaning. . . . I was wondering about what was mentioned earlier – why was the method of using water to displace oil chosen instead of the previous steam cleaning approach? Is it just environmental factors?
Now, as the equipment becomes larger, the diameter of the pipelines increases as well. Using steam for purging makes it difficult to clean them thoroughly; moreover, a large amount of steam is required, and the purging time is long, placing a heavy burden on the utility power stations. Now, each factory has a limited amount of time for shutdown, leaving not much time for purging and cleaning. Therefore, after choosing water cleaning, using a cleaner results in a cleaner finish and saves time. Moreover, chemical cleaning is now outsourced to professional cleaning companies, with production staff merely assisting in the process, which reduces the workload for the operators. It’s just my personal opinion; I look forward to any corrections from experts! !
If water is used for rinsing, the large amount of wastewater generated poses a challenge in terms of disposal. It’s already 2018 now, and I was wondering if you have implemented this plan. What is the specific effect?
It works very well, but it’s not clear what happens to the wastewater in the end.
Could you please provide the rinsing procedure, or information on how that company handles it?
We’re unable to provide a solution; many large-scale devices these days are washed in this way.
Which brand is the cleaning agent used after applying oil on top of water?