C4, C5-based propylene production technology
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1 Are the C4 and C5-based propylene production technologies mature enough to be commercialized? What are the economic benefits of C4 and C5-based propylene production technologies? What are the technologies for producing propylene using C4 and C5? Which technology is more advanced? Are there any further questions regarding the C4 and C5-based propylene production technologies? If fluidized bed technology is used, how is the thermal balance addressed? This post was last edited by along2006 on 2009-3-1 11:40]
Currently, propylene is produced by separating it from the liquefied gas generated as a by-product of catalytic cracking, as well as through naphtha cracking. What are your thoughts on the technology for producing propylene from C4 and C5? This post was last edited by along2006 on 2009-3-1 11:40]
At present, Zhongyuan Ethylene is under construction and will soon begin operating to produce propylene from tetraolefins
The production of propylene from mixed C4s relies mainly on cracking technology. . . As far as I know regarding this technical challenge, it is currently being researched at the School of Chemical Engineering of Shandong University of Science and Technology (Huangdao New Campus) in Qingdao. . . . There are no public reports yet. . . Generally, it follows the methods and principles used in ethane cracking to produce ethylene; with the help of selective catalysts, propylene is separated through processes such as pressure swing adsorption or gas separation. . . Currently, both experiments and pilot tests are underway. Technology transfer is also under discussion. . . I heard that many companies are paying attention to this matter. . . :lol
To increase the propylene yield, the DCC combined unit in our facility uses C4 recycling after etherification to produce more propylene. Specifically, after isobutylene is extracted from the C4 using MTBE, the C4 is fed back into the riser for reprocessing, allowing butylene in the C4 to be cracked under harsh conditions to generate more propylene; however, alkanes basically do not participate in this reaction； The production of propylene from C5 also involves using the olefins in C5 to produce propylene under the action of a catalyst.