What processes are generally used for gasoline refining in China to produce gasoline that meets National IV standards?
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This post was last edited by lijianhuai on 2012-1-5 at 13:10. What processes are generally used in China for refining gasoline to meet the National IV standard?
Sinopec’s S-zorb technology should be able to do it
The gasoline level in the S Zorb device can reach 10PPM
The highly selective hydrogen desulfurization catalyst developed by Dalian University of Technology can reduce sulfur levels from 1200 to 50 ppm, with an octane number loss of less than 1 (RON0)
Reply to 2# Gas purification: Is this S-zorb a technology developed by Sinopec itself or is it imported from abroad?
Reply to 5# lxxyy1984: It was bought from outside, and now it’s claimed to be one’s own, but there are still quite a few problems. There is information and discussions about it on the forum!
French AXENS can do it, and it is currently widely used by CNPC. Their price should be lower than that of S-Zorb from Sinopec.
The desulfurization level for National IV gasoline should be 50 ppm. Note that this applies to regular gasoline; there’s no need to reduce the desulfurization level to 50 ppm in catalyzed gasoline – 70 ppm or even higher is acceptable. By adjusting the levels of reformed gasoline, MTBE, pentane oil, etc., it’s entirely possible to achieve a desulfurization level of 50 ppm. As for technology, Sinopec’s RSDS, OCT-M, and the imported S-ZORB ； CNPC: DSO, GARDES, introduction of Prime-G+. The challenge in this round of upgrades is not National Standard IV itself, but rather the gap between National Standard IV and National Standard V, combined with the tight funding constraints for investment and construction in our country.
UOP’s catalytic gasoline hydrogenation uses catalysts S200 and S250