Issues regarding gasoline refining
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During the refining process of gasoline, why is it necessary to mix activators, alkaline solutions, and water in specific proportions in order for it to be effective in refining gasoline?
I’ve never seen such a process before! Generally, it starts with a pre-alkaline wash (without an activator), followed by an alkali-free deodorization (only with an activator added), and then it goes into the sand filter tower. These mixtures were not used in gasoline refining. Last edited by lsswyb01 on 2009-2-27 13:21]
I remember that the stable gasoline refining system in our plant required air supply; I’ve never seen the use of alkaline solutions, and an activator was also necessary.
The activator is used alone. I haven’t heard of the mixed version yet; please explain.
The claim from upstairs is indeed quite rare. You must be referring to the desulfurization alcohol tower; alkali and activators act as catalysts, while air provides the oxygen for oxidation. Activated carbon provides the carrier; another very simple material is also needed. If you read books on the alkaline washing of gasoline, it will be easy to understand
It’s indeed possible that it’s what was said on the 5th floor. Alkali solutions are primarily used to react with hydrogen sulfide in gasoline; when catalysts, oxidizing air, and activators are added, they react with thiols in gasoline. The catalysts and oxidizing air facilitate the catalytic oxidation reaction, while the activators may be added to improve the rate of thiol removal. The specific chemical reactions are as follows: H2S + 2NaOH → Na2S + 2H2O; RSH + NaOH → NaRS + H2O; 4NaRS + O2 + 2H2O → 2RSSR + 4NaOH
Alkaline solution is used to maintain the activity of the catalyst; the catalyst can function only under alkaline conditions. Activators are used to keep the bed layer clean, and water serves as a carrier for the alkali