Catalytic cracking unit reaction and regeneration system, gasoline reprocessing
Thread Content
I would like to ask everyone: what are the techniques used in catalytic cracking units to modify gasoline by feeding it into the riser reactor for reprocessing? ? For example, FDFCC – does gasoline participate in reprocessing and upgrading? ? So what are those other technologies? ? ?
Also, MCC, DCC, FCC, etc
There is also the MGD gasoline olefin-reduction technology for increasing liquefied gas production
Processes such as MIP, DCC, and ARGG can all be used for the reprocessing of gasoline, thereby increasing its octane rating and reducing the olefin content.
The MIP process is poor and unsuccessful
Conventional catalysis can also be used to reprocess gasoline in order to reduce its olefin content and increase the yields of liquefied gas and propylene.
The catalytic cracking gasoline reprocessing technology is an integrated process that combines three techniques: gasoline re-cracking, selective cracking of different feedstocks, and staged termination of reactions. Catalysts that increase propylene production can be used to boost propylene yields through the catalytic cracking of FCC light gasoline, such as the ARGG process for increasing propylene production. Olefin-reducing catalysts can also be employed to lower the olefin content in gasoline by reprocessing crude gasoline, as in the DSZ process. Some refineries use their catalytic cracking units to inject crude gasoline into the pre-heating steam lines of the riser reactors in order to increase diesel production. There is also the FDFCC process developed by Luoyang Petrochemical Company, which involves reprocessing gasoline to increase diesel and liquefied gas production (while also increasing C3 and C4 olefin yields). The Petroleum Processing Research Institute has developed a catalytic cracking technology aimed at increasing liquefied gas and diesel production (the MGD process); this technology can also be used to reduce the olefin content in gasoline. Last edited by hgshy on 2009-3-15 18:24.]
MCC, DCC, FCC, TMP, MGD, MIP, ARGG – to summarize
There’s also DCC-PLUS.
MGD injects gasoline at the bottom of the riser to increase the gasoline partial pressure and boost the yield of diesel and liquefied gas
Technologies that involve feeding gasoline into lift pipes for reprocessing in order to improve its quality include: the auxiliary lift pipe modification technology for reducing olefins developed by China University of Petroleum (Beijing), the MGD technology from the Research Institute of Petrochemical Science, and the FDFCC technology from Luoyang Petrochemical Engineering Company. Furthermore, the MIP technology and MIP-CGP from the Petroleum Chemical Science Research Institute can also achieve the goal of reducing the olefin content in catalytic cracking gasoline by modifying the existing risers. The technologies for increasing ethylene and propylene production using gasoline reinjection lift pipes include: UOP’s PetroFCC technology, Lummus’ SCC technology, KBR and Exxon’s Maxofin technology, and the TMP technology developed by China University of Petroleum (East China).