Reasons why refined diesel after hydrogenation still has an odor
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After modifying our hydrogenation process – with an inlet pressure of 11 MPa and an outlet pressure of 370 MPa – the sulfur content of the diesel produced is 200. The diesel produced includes 60% of the ‘Cui Diesel’ type, 26% of the ‘Chang Diesel’ type, and 70% of the ‘Jiao Diesel’ type; the reason why the product still has a slight odor is…
200. . . Is this National Standard 3?
Has the catalyst for hydrofining there lost its activity quickly? The desulfurization rate is too poor; either the subsequent stripping process isn’t activated, and as a result hydrogen sulfide isn’t removed. It is recommended to determine the morphology and distribution of sulfides, so as to assess the specific transformation of sulfides during hydrogenation. If it is only the high hydrogen sulfide content, then it indicates that the stripping is insufficient. If the content of other sulfur forms is very high, it indicates that the hydrogenation catalyst has lost its activity.
All the major refineries across the country are now producing fuel that meets National Standard V requirements, with a sulfur content of no more than 10 ppm. The sulfur content in the products from your facility is too high; the purification catalysts are not effective enough in removing sulfur
We operate a small-scale refining facility that complies with National Standard V requirements. The market is limited, and the volume of processing is low; moreover, the production environment is harsh, which accelerates the aging of catalysts