Why is diesel blended into hydrocracking units, and what type of diesel is used for blending?
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Why is diesel blended into hydrocracking units, and what type of diesel is used for blending? What should be kept in mind?
Charcoal, quick-burning wood, or coal can all be used; it is important to pay attention to the properties of the raw materials to prevent catalyst poisoning, etc., in order to ensure long-term operation.
Charcoal, quick-burning wood, or regular wood can all be used; the main thing to pay attention to is the change in temperature rise in the reactor bed, as well as the optimization of product quality!
Coking wax oil can also be blended in; the type of oil to be used depends on the company’s considerations regarding the balance and efficiency of each processing unit. Diesel has a better quality, so it can be blended in larger quantities. Wax oil has a significant impact on the catalyst beds, especially coking wax oil. Sometimes it is necessary to blend in this type of oil, as it needs to be processed – either in a catalytic unit or in a hydrocracking unit
It’s not the case that whatever you say will be done; generally, an evaluation is first conducted on the crude oil supplied by your company, and then requirements are set based on that company’s capabilities. Finally, the design institute determines the design parameters and requirements regarding the properties of the raw materials. When operating, it’s essential to pay attention to the pressure and temperature in the reactor.
Currently, diesel cracking is often blended with catalyzed diesel, coked diesel, or even coked naphtha. Of course, diesel at normal pressure is even less likely to escape. Mainly due to the sluggish diesel market, it has once again been cracked into heavy fractions for use in downstream aromatic compounds.
Heavy naphtha just goes in to take up space, right? Can it be cracked?
Under normal conditions, it does not undergo cracking. It’s just a hydrogenation process. Moreover, processing coked naphtha is not the norm either; it is merely an alternative option in case of catalytic abnormalities