Can heavy oil or diesel be used to produce aromatics?
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Someone asked today whether heavy oil or diesel can be used to produce aromatics I really don’t know how to answer; what about you? I know, please share it, thanks~~~
This post was last edited by humin on 2017-4-11 06:31. It is almost impossible to produce aromatics from heavy oil, or it requires enormous efforts with minimal results, as it is truly difficult to convert large-molecule heavy oils (such as atmospheric residue) into aromatics. Diesel contains a high amount of aromatic compounds, especially catalytic diesel has a high aromatic content. Is it possible to produce more aromatics by separating the components of diesel? Is such a possibility existing?
The production of aromatics from diesel is currently fully feasible. Due to the high aromatic content in catalytic diesel, current technologies are mainly focused on the raw materials for such catalysis: 1) two-stage medium-pressure hydrocracking technology, which is used to produce high-aromatic gasoline and can also be used for extracting BTX. 2) Hydroprocessing-catalytic cracking combined technology to produce high-aroma gasoline ； 3) First, the feedstock is separated to isolate the heavy aromatics, after which it is converted into BTX via a hydrogenation process.
Catalysts that are now in industrial use allow for the selective hydrogenation of polycyclic aromatics in catalytically cracked diesel to form monocyclic aromatics; these compounds can then be used, through hydrocracking or catalytic cracking processes, to produce high-octane gasoline components rich in aromatics, or diesel components containing alkylbenzenes with long side chains. That is, the LCO hydrogenation-catalytic process for producing high-octane gasoline or light aromatics, known as LTAG
RLG, using catalytic char as a raw material, can hydrocrack polycyclic aromatics into monocyclic aromatics, with a conversion rate of around 40%.
UOP has a hydrogenation process for catalytic conversion of diesel to aromatics.
Pilot plant for catalytic conversion of diesel into light aromatics and cracking feed successfully commissioned https://bbs.hcbbs.com/thread-3297554-1-1.html
:victory::victory::victory:
Heavy naphtha produced by diesel hydrocracking is fed to continuous reforming, while vacuum residue is fed to a fluidized bed residue cracking unit; the naphtha resulting from that process is subjected to pre-hydrogenation before being fed back to continuous reforming； Reformate oil produced by continuous reforming is supplied to the PX unit