Catalytic Reforming Yields, Advantages, And Disadvantages
Catalytic reforming is a necessary chemical process used within the petroleum refining industry which takes in straight run naphtha or partially treated light straight run naphtha, depending on the process, as a feedstock and converts it into high octane reformate and gasoline products. The earliest catalytic conversion processes date back as far as the 1930’s, however they’ve been continually improved upon since then with advances in techniques, catalysts, dongying shijielonghui petroleum equipmentmpany numbers and yields to fulfill governmental product requirements. There are several different processes which are designated into classifications based on how their individual catalyst regeneration systems work. Those classifications are: semi-regeneration, cyclic regeneration, and continuous regeneration. Older catalytic reforming processes are typically semi-regenerative while cyclic and continuous regeneration processes are newer more advanced strategies.
Semi-regenerative methods, while useful, will be problematic because they should be turned off on a scheduled basis for the regeneration process to happen. These scheduled outages mean that the refineries cannot generate products and are therefore losing money while the units are offline. Cyclic units sought to resolve a few of these issues by introducing another reactor to a two or three reactor system in order that while one is turned off for regeneration the others could continue running and producing high octane fuels. The newest practices use continuous regeneration which requires no shutdown time because catalysts are momentarily faraway from the reaction process, regenerated, after which introduced back in to continue the transformation of low octane feedstocks to high octane products. Continuous processes appear to be the most effective way to go except that they’re essentially the most expensive and most technically involved of the three methods.
Besides the regeneration methods, catalytic reforming processes, such as alkylation, dealkylation, polymerization, isomerization, and disproportionation1, have their very own advantages and disadvantages as well. Sulfur is a major issue for catalysts because it should poison the catalysts causing them to be unable to function so hydrogenation must occur prior to any of those catalytic reforming processes going down to remove sulfur. Dehydrogenation and dehydrocylcinization as overall processes can be problematic because they’ll create aromatic compounds which are regulated by the U.S. government because of their nature as carcinogens. The procedure of alkylation has an advantage over other practices in this respect because it doesn’t produce any aromatic compounds which is why it’s favored in use over other reforming types.2 Alkylation is just not without its drawbacks though, while it yields no aromatics alkylation does require the usage of highly concentrated acids, resembling hydrofluoric or sulfuric acid1. dongying shijielonghui petroleum equipmentmpany numbers Acids reminiscent of these could be dangerous to human health as well as the environment 3 4.
1. “CIEC Promoting Science on the University of York, York, UK.” Cracking and related refinery processes. N.p. n.d. Web. 10 July 2014. <http://www.essentialchemicalindustry.org/processes/cracking-isomerisation-and-reforming.html>.
2. Eser, Semih. “Alkylation.” FSC 432: Petroleum Processing. N.p. n.d. Web. 12 July 2014. <https://cms.psu.edu/section/content/default.asp WCI=pgDisplay&WCU=CRSCNT&ENTRY_ID=F20C6357261A4AE2A750C141B
3. “Hydrogen Fluoride (Hydrofluoric Acid).” CDC. N.p. n.d. Web. 11 July 2014. <http://www.bt.cdc.gov/agent/hydrofluoricacid/basics/facts.asp>.
4. “Sulfuric acid .” Centers for Disease Control and Prevention. Centers for Disease Control and Prevention, 18 Nov.