What causes changes in the cold filter point? Thank you
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The cold filter point here varies greatly; for the same batch of oil, the cold filter point can range from minus 4 degrees to plus 5 degrees. For example, the density of fuel grade 2 at 2°C is 0.8848; its initial flash point is 166°C, its dry flash point is 326°C, and its cold filter point is minus 4 degrees Celsius. At 12 o’clock, the density of the oil is 0.8823; the initial boiling point is 153 degrees, the final boiling point is 325 degrees, and the cold filter point is 5 degrees above zero. Without changing the can, why such a big difference? Thank you
Is the variation in the cold filter point related to your operating procedures? A higher boiling range results in a higher cold filter point – are there any fluctuations in the operating procedures? Additionally, is the quality of the raw material unstable?
When the density of the product and the process remain relatively constant, such a large change in the cold filter point suggests that there has been a significant change in the properties of the crude oil; other factors should not be responsible for this.