What exactly is in gasoline that does not meet the standards? Solve
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Recently, the media has reported issues with substandard gasoline； Generally, for the production of blended gasoline, the basic raw materials include toluene, benzene, xylene, ethylbenzene, light aromatics, mixed benzene, heavy aromatics, C9 aromatics, C5 olefins, and the additive MTBE. I would like to ask, if something is added to gasoline to tamper with it, what is usually added? Is it possible to add carcinogens that are even more harmful than benzene? Is the amount added large? Two issues are unclear now ； Generally, with substandard gasoline, what kinds of manipulations are usually done to the raw materials? For example, what materials are added, and how much of them needs to be added for it to be detected as substandard? Or perhaps other aromatic and olefinic compounds will be added, but their carcinogenicity is not as strong as that of benzene compounds. Are only highly carcinogenic benzene compounds capable of meeting the manufacturers’ requirements? Thank you!
It’s just a guess, but the substandard gasoline might be due to the heavy metals not having been removed from it
Add direct-current gasoline, then include a octane booster; gasoline produced from the reaction of formaldehyde and methanol generally has a sulfur content that is well above the acceptable level. The required level is below 150PPM, but the sulfur content in products available on the market is far higher than this figure.
What is DC gasoline? I’m hearing about it for the first time!
It’s said to be a metal additive; probably too much MMT was used, or ferrocene, which has been phased out for years, was added
I’m not familiar with the technical aspects, but benzene is definitely out of the question; it’s mainly a matter of cost. In fact, mixing gasoline grades isn’t anything new – for example, using 93# gasoline in engines designed for 97# gasoline. .
Reply to 4# hesonchang214: Atmospheric and vacuum gasoline
This post was last edited by anima1 on 2011-5-28 at 17:47. Reply to 5# sjyygh: This is how I understand it； For the vehicle itself, adding 2% more of a certain substance has a significant impact on it; as for fuel tanks, for example, if 2% benzene-based substances were originally added, substandard products result in an addition of 4%. When the benzene content in the oil and gas volatilized from the oil and gas vents, as well as at the connections between oil tanks and tank trucks, is within acceptable limits or not, the difference is very small. For example, when 100g of gasoline vapor is released, the amount of benzene vapor contained in it increases from 2g to 4g. This poses little harm to the health of employees, but for the car itself, a difference of 2g is sufficient to affect its performance. I’m not sure if my analysis is correct? People believe that the accidents resulting in major vehicle repairs across the city due to this failure were possibly caused by the addition of benzene-based substances and aromatic hydrocarbons. And highly carcinogenic substances?
Reply to 8# anima1: It’s probably not that benzene-based substances were added; sellers wouldn’t be foolish enough to use expensive substances like that!
Reply to 9# changhw: It’s probably too much methylcyclopentadienylmanganese, abbreviated as MMT.