White filaments appear in the diesel
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Sampling the diesel in the tank revealed white filamentous substances in the oil; these substances are insoluble. When the oil is stirred, they move along with it, but when left at rest, they sink to the bottom. The tank was recently emptied, and it was found that the oil flow holes at heights below 2 meters on the gauge rod and alignment rod were covered by a layer of something that resembled a dense spider web. I would appreciate some guidance on why there are these white filamentous substances, and why there is material covering the oil flow holes on the gauge rod
Take some samples of those white filaments for testing. If the wax in the oil has precipitated due to low temperatures, it can be dissolved by heating it slightly. If this substance does not dissolve after heating, it might be other impurities that have entered the oil.
Has a demulsifier been added to the raw materials, and is an anti-wear agent included in the finished product?
Demulsifiers don’t seem like it, but anti-wear agents are possible. Is the anti-wear agent water-soluble or oil-soluble?
Are you referring to finished diesel? 1. Check whether the oil has emulsified ； 2. Analyze the cold filter point to determine whether it differs little from the ambient temperature or the temperature of the storage tank 3. For water-soluble anti-wear agents, it is necessary to analyze the micro-water content sent out from the device; the device should be equipped with a filter, and the large tanks should have their water removed regularly. Is the oil-soluble acidity within the acceptable range? 4. Conduct a comprehensive analysis of the sample by mass spectrometry to determine its composition.
Demulsifiers are designed for the raw materials, while anti-wear agents are meant for diesel. We here are only speculating, as other affiliated units have also encountered similar situations!
Since the demulsifier is used as a raw material, it should not remain after the reaction. Demulsifiers mainly consist of polymers, alkaline substances, and surfactants. Anti-wear agents are possible; I’ve never encountered them. Tell me
Many white filaments, like cotton fluff. I suspect there was an excess of antioxidants; it wasn’t noticeable at the time, but it became apparent after a few days
This post was last edited by karamay on 2015-9-21 17:49. 1. Bacteria are produced. One view is that it is caused by poor-quality anti-wear agents. Biodiesel has one characteristic: bacteria can start to form as soon as it is produced in the morning, which is why fungicides must be added to biodiesel. A reminder: the presence of bacteria in diesel is very dangerous and can lead to serious quality issues. The mycelium can clog the filters in diesel vehicles, causing them to run out of fuel and stop working. If the engine is started repeatedly under such conditions, it can damage the high-pressure fuel pump as well as the high-pressure fuel injectors and nozzles. A set of high-pressure fuel injectors and nozzles for a vehicle can cost up to 70,000 yuan. 2. The use of ester-based anti-wear agents may result in flocculation.
I would like to ask if it is diesel after hydrogenation? Is it diesel produced in winter or in summer? Is a pour point depressant added in winter? Previously, we had this substance at the bottom of the diesel here; it formed as a result of adding antifreeze agents.