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Refined diesel colority

2017-01-16 View Original

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This post was last edited by Adventure Wang on 2017-1-17 at 20:50. Originally, refined diesel was transparent, but now it has a yellowish tint with a slight greenish color. I would appreciate it if experts could explain what causes this phenomenon; it’s possible to rule out the possibility of the raw material coming into contact with air, as the hydrogenation level is 20 degrees higher than before
Reply #2 2017-01-16
More or less. Back in the National 5 standard, the proportion of firewood used could be as high as 20%, while now it’s only 6%
Reply #3 2017-01-16
More or less. Back in the National 5 standard, the proportion of firewood used could be as high as 20%, while now it’s only 6%
Reply #4 2017-01-16
Accelerant wood is mixed in, but burnt wood is not. The proportion of accelerant wood varies depending on the standard – from 10% to 44% for Standards 3, 4, and 5 – and it has been reduced to 6% this time in order to meet Standard 5
Reply #5 2017-01-16
Dear expert, how should we reduce chroma?
Reply #6 2017-01-17
Generally, it is adjusted by changing the amount of additive used. Does the properties of the fuel change significantly when this is done?~~~
Reply #7 2017-01-17
First, the properties of the raw materials are different; second, the denitrification effect of the reaction is low. Increasing the reaction temperature, reducing the space velocity, and raising the pressure can enhance the depth of the reaction – it remains to be seen what the results will be
Reply #8 2017-01-17
The change in density is what causes the issue; all other parameters remain stable, with no differences compared to before
Reply #9 2017-01-17
Thank you. The properties of our raw materials have changed slightly, but it’s still within acceptable limits; such fluctuations have occurred before as well. The degree of reaction is already high enough; we’ve now increased the temperature, pressure, and space velocity, and the hydrogen-to-oil ratio is above 1000. Yet the color is still not correct. Now, the management suspects that there might be a leak in the high-pressure heat exchanger

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