Catalyst causes diesel to darken!
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The catalyzed diesel suddenly turned black; its boiling range is fine. Has anyone encountered a similar problem? What’s going on?
The stability is very poor! It seems to contain a lot of unsaturated hydrocarbons
Is the nitrogen content and carbon residue of diesel usually analyzed?
Take a look at these two posts for reference; it might be helpful. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=327256 http://bbs.hcbbs.com/thread-388132-1-1.html
In summary, after ruling out leaks in the heat exchanger, the issue was oxidation; the viscosity of the glia was too high. For reasons, refer to the above two posts. I don’t know if it’s fixed now.
First conduct a complete diesel analysis; then things will be much clearer with the results.
The darkening of diesel color may be due to fluctuations in the reabsorption tower, which cause contaminants from that tower to be carried back into the distillation tower. We have encountered this issue before. Caused by fluctuations in the stable system