About membrane filtration applications
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Can existing membrane separation technology be applied in the field of oil decolorization?
I don’t know what membrane the poster is referring to? There are many types of membranes--ultrafiltration membrane, RO membrane, nanofiltration membrane, microfiltration membrane, and ion exchange membrane. This post was last edited by chc1125 on 2008-11-10 10:06 ]
To decolorize oil, you must first understand the cause of the discoloration. If it is caused by liquid molecules other than the product, you also need to know which molecules they are and how much they contain. Only then can you decide which method to use for separation. If some of the molecules in the product have color due to oxidation, then use traditional refining methods, such as clay, to process it. In short, I have never heard of anyone using membrane separation to successfully deal with oil decolorization.
Isn’t there a special decolorizing agent now? What is the molecular weight of the oil and what is the color body? It all depends on the situation! Membranes cannot be used for anything. If this happens, many companies will fail in the future. How many people will be laid off! :funk: :funk:
Membrane contamination is generally serious, and the composition of oil products is complex. Personally, I feel that it is not suitable for membrane separation.
The composition of the oil is complex, the membrane is relatively fragile, and the strength and efficiency need to be further improved. Is it possible to use adsorption for decolorization?
I feel it’s still okay! There is just a technical problem! Just like the human body, blood and everything else must be filtered before the human body can work! Of course, the problem of molecule size and other problems will also be solved, and I didn’t learn this! I’m just talking casually here!
When it comes to water treatment, it seems that fluidized beds use membrane treatment technology.
In the past, I have always used white clay for decolorization, but this product has two major shortcomings.: The decolorization effect is not ideal ； The waste is huge. After filtering, the oil content in the clay is still very high, probably over 40%. Since our oil is recycled, the waste caused by this is huge... Now we are also looking for a good decolorization method. This post was last edited by chc1125 on 2008-11-10 10:07 ]
The so-called decolorization is mainly about adsorption, and it is mostly considered from the adsorbent. I agree with the above point of view that membrane separation is not suitable and the oil is too mixed.
* * Where can I find membrane materials for breathing filters?
It’s better to be realistic when choosing a suitable adsorbent! personal opinion
Regarding oil decolorization, you can check out* * V-sep’s vibrating membrane separation technology. I saw their demonstration equipment at the Shanghai exhibition last time. Dark oil went in and gold came out. * * of. None of the membranes mentioned on the second floor are used for oil decolorization. At most, they are oil-water separation ultrafiltration membranes, which are used for water reuse when the water contains a small amount of oil.
The composition of oil is complex, the membrane is relatively fragile, and the strength and efficiency need to be further improved! This post was last edited by chc1125 on 2008-11-10 10:07 ]
The membrane is used to decolorize oil products, but it seems to be immature. The oil itself seriously pollutes the membrane, and the oil composition is complex, which may damage the membrane.
According to what the poster said, the oil is recycled, so it should be relatively pure. Is it cooling or something like that? Try ultra-fine filter element filter material.
If some of the molecules in the product have color due to oxidation, then use traditional refining methods, such as clay, to process it.
I have benefited a lot and learned a lot. Haha, we mainly do LNG projects:)
Our institute conducted a membrane separation project in 2006. The filter membrane removed high carbon dioxide gas from natural gas. It performed three-stage filtration to control 30% carbon dioxide within 8%. The treated gas was then sent to the liquefaction unit to extract liquefied gas and light hydrocarbons. The income is not bad. The membrane was made by the Dalian Institute of Physical Chemistry. You can look up their information online and see if you can do it :)
Personally, I feel that membrane technology cannot be used to treat oil decolorization. A pair of membranes should have solubility ； The diffusivity of the second oil may not be suitable
Thank you, I learned a lot! :)