Let’s see if there are any good ways to clean them in order to extend the lifespan of these filter elements, whose cost is nearly 3 million yuan, and allow them to be used for more cycles
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The feed oil filter for the hydrogenation unit at a certain petrochemical company was designed and manufactured by the American company PALL; it features a sintered mesh filter element with a filtration precision of 20μm. After more than a year of filtering and separating feed oil, carbon deposits, asphaltenes, and other oily impurities accumulated on the surface inside and outside the filter element as well as in its layers, causing severe blockages that prevented it from functioning properly. This led to clogging of the catalysts, thereby negatively affecting both production volume and quality. Common cleaning methods cannot solve this problem. Using commercial cleaning methods, it can only be cleaned 2 times as per regulations before it needs to be discarded; its service life is short, and the cost per cleaning session is high. Let’s see if there are any good ways to clean it, so that the filter element, which costs nearly 3 million yuan, can be used for more cycles
If such things can be reused, the price will drop. High-temperature cauterization? Chemical corrosion? ? ;P
It is necessary to be able to clearly explain the rationale behind cleaning it twice as well as the basis for such a practice; one should not simply clean it twice just because someone asks so. Of course, the more times it is cleaned, the better. Suppliers would prefer to replace it with a new one as soon as possible if it becomes damaged.
It is necessary to be able to clearly explain the theoretical and experimental basis for cleaning twice; one cannot simply do it twice just because someone asks. Of course, the more times it is cleaned, the better. Suppliers would prefer to replace it with a new one as soon as possible if it becomes damaged.
To explain why it can no longer be used, one must look at it from a microscopic perspective; cleaning methods and similar approaches can also be explored further.
You can consult Zibo Beiyue Equipment Protection Company for this; they have extensive experience in cleaning Porex filters.
It’s so expensive; it was replaced after just 2 uses – what a waste.
That’s right; this filter was cleaned twice, with a professional cleaning company being hired for the task. The cost of one cleaning session is around 420,000 yuan, so the total cost for two cleanings amounts to 840,000 yuan. The cleaning process involves a combination of high-temperature baking, ultrasonic cleaning, and cleaning agents. After cleaning, the permeability of the filter element reaches over 90%, fully restoring its flow capacity. According to the professional filter cleaning company, after being cleaned 2 times, such filters cannot be cleaned again after use and must be discarded. The reason is that after being exposed to high temperatures multiple times, the physical properties of the filter element change, its mechanical strength decreases, and its shape becomes deformed. However, the 440 filter elements that have been updated (after being cleaned twice) cannot be cleaned by high-temperature baking; yet a macroscopic inspection shows that these filter elements show no signs of corrosion, damage, or deformation. We can’t just let a filter worth 3.9 million yuan be wasted like that. Are there any other ways to fix it?
Can it be done through chemical cleaning? Our company usually uses water jet cutting; otherwise, we resort to chemical cleaning. I’ve never heard of any more specialized methods@@"
Replace the high-temperature baking process with dry ice cleaning