Alkylation dry point problem
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In the most recent batch of raw materials, the isobutylene content is around 3%, which has caused the dry point of the alkyl oil to rise to around 200, whereas it used to be around 185. Could anyone please help solve this issue? After all, as we all know, once MTBE is banned in the future, C4 compounds will be used instead, and thus the isobutylene content will surely increase. Let’s discuss any possible solutions together. At present, reducing the reaction temperature, increasing the alkene-to-olefin ratio, and increasing the acid-to-hydrocarbon ratio are not effective solutions. . Please ask the experts for guidance
There are basically no effective measures; one can only slow down the process rather than eliminate it, by increasing the alkene-to-olefin ratio, lowering the reaction temperature, and extending the acid washing cycle
How should the acid concentration be controlled? It’s possible to coordinate well with the tank area to mix the raw materials evenly; instead of using all of one batch at once, a small amount should be added to the system each day until it’s properly mixed. MTBE banned? In a few decades, China will have only electric vehicles with a range of 500 kilometers – but these are just distractions; currently, the government is trying to control private enterprises in order to phase out certain small devices. There’s no way to allow survival of the fittest. Develop another new project to encourage investment in setting up factories. Infinite loop. . . . . . . . .
Acid concentration control: 90-91. The raw material is already diluted to 3% concentration; it was originally 9%. Once this batch of raw material is used up, there will be none left. Considering that such raw material might be available in the future, I don’t know how to control its concentration to make it drier.
Even after MTBE is banned, MTBE plants will still need to operate, right?
There are mainly two factors that affect the dry point of alkylated oil. The first is the content of dienes and impurities in the raw materials; high levels of these substances lead to increased acid consumption and a decrease in acid concentration. As the acid concentration drops, the likelihood of side reactions increases, and the resulting by-products affect the dry point of the alkylated oil. Secondly, it involves calculating the change in concentration under conditions of stable raw material properties; when the acid concentration drops to a certain level, side reactions increase, which leads to an increase in the dry point of the product. Here, the acid concentration is 92%; please create a standard sample for your area’s acid concentration. It’s still some time before MTBE is banned! Small businesses are affected by their sources of raw materials, and they have no choice. There are basically no effective measures; it can only be slowed down, not eradicated, as isobutylene polymerizes more easily than other olefins. Side effects occur.
From now on, ethanol will be added to gasoline; MTBE should no longer be used
These days, there are gas stations everywhere that do or don’t use ethanol, and with the introduction of National Standard VI, this practice has become even more rampant! Ethanol-blended gasoline is simply more environmentally friendly; MTBE cannot be phased out for the time being
These aren’t a big deal; they still work fine. As long as it’s under 205, that’s okay. In fact, if you adjust the oil yourself, 210 isn’t a problem either
All of you guys seem to be experts; are you interested in going to the recruitment section to take a look at the job openings at Fujian United Petrochemical Company?
Expert, can the pre-hydrogenation step for alkylation be modified to isobutylene polymerization? ? ? Can the hydrogenation reactor be replaced with a stacked catalyst? ?