Reducing the issue of first-line instability
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This post was last edited by dongliangsir on 2010-5-29 23:05. Our company’s first-stage products show good color and low chroma when sampled directly from the equipment; however, after resting in the tank area for 2-3 days, their color turns dark and the chroma rises to 2.8. What could be causing this, according to those who work in vacuum distillation? How can I keep the color from darkening?
Is it used as a component of heavy diesel, or what? If it is indeed as you say, then its stability is likely poor. It depends on the properties of the raw material; efforts should be made to improve its stability, for example by carrying out refining processes. This post is provided for reference: http://bbs.hcbbs.com/viewthread.php?tid=339187&highlight=%B0%B2%B6%A8%D0%D4
Could it be that the stability of the oil is poor? Try lowering the temperature
This post was last edited by mpcchuang on 2010-5-31 08:19. It’s purely a matter of raw materials; installing a diesel hydrogenation unit can solve the problem. If that doesn’t work, it can be converted into fractionated oil – in any case, the quantity involved isn’t large