Several issues with the third-generation UOP reforming process
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This post was last edited by jacques0920 on 2017-5-26 at 16:54. Hello everyone, regarding the third-generation reforming process, (1) what is the purpose of introducing hydrogen at the bottom of the reforming reactor? (2) What is the purpose of installing a catalyst cooling circuit in the catalyst regeneration process? (3) A chlorine adsorption tank is installed before the regenerator, and chlorine is added during the regeneration process – what is the purpose? (4) Is the green catalyst coming out of reactors 1 and 2 lifted using recycled hydrogen, rather than by the lift fan? (5) How is the oxygen content in the regenerator adjusted? (6) Does the oxygen used in the chlorination process come from the dried instrument air? There are quite a few issues; I would appreciate it if those who are familiar with this manufacturing process could share their insights. Points will be given for that, thank you.
1. Hydrogen is introduced at the bottom of the reactor to displace the oil and gas on the catalyst in the catalyst collector located below the fourth reactor section. 3. Dechlorination before the regenerator prevents corrosion, while re-chlorination is done to maintain water-chlorine balance. 4. Using hydrogen for lifting does not cause deflection. 5. The oxygen content is controlled by adjusting the gear. 6. Yes. . . . . . . . . . . . The questioner, you need to be sure whether it’s really UOP. It seems to me that this technology might be of domestic origin, from the Luoyang Institute. Go back and check whether your reactors are stacked four on top of each other, or whether they are all placed separately, or grouped in pairs side by side
They are stacked in pairs side by side. Why is it said that using hydrogen for lifting results in no impurities? Can’t we use nitrogen? Because it needs to be purged with nitrogen before entering the regenerator. There is another question: when restarting the regeneration process, how is the residual carbon burned away? Thank you again.
2. The cold circulation line is used for shutdown purposes, also to prevent damage to the catalyst or internal components； It is important in UOP’s four-in-one or two-in-one reactors; in ASP, there are four of them arranged side by side, but they may not be necessary. 3. For the third question, the exact details were not clearly specified. In the third-generation UOP reforming and regeneration process, the gas is neither dechlorinated nor dehydrated; such treatment is only carried out in the ASP unit. It’s not known whether this aspect has been taken into account in the latest versions of UOP systems. Dehydration and dechlorination can help control the decline in the specific surface area of the catalyst as well as the amount of dust generated. 4. Based on the fourth question, it seems that your UOP reforming capacity is quite large, around 2 million tons per year. You use two-in-one reactors, presumably to prevent too much nitrogen from entering the reactor. 5. Factors such as oxygen content in the regenerator, volume of air used for regeneration, catalyst circulation rate, catalyst coking rate, and reaction severity need to be considered together; as for the specific methods of adjustment, please contact me via private message. 6 is the instrument air after drying. Give me more wealth.
OP, please give me more wealth. The issue of restructuring.
I can give up to 20 at a time. I’ll ask a few more questions and then give the wealth: lol
Nitrogen will reduce the concentration of circulating hydrogen and waste nitrogen； Do you mean burning off the residual carbon as black burning?
I can answer them separately. Which company is it? Do you know it?
In other words, using hydrogen first can also replenish the circulating hydrogen? What is black burning? This unit has a capacity of 1.4 million tons, for reformation + extraction.
Do you have QQ? I’ll message you privately.
It’s not to replenish the circulating hydrogen; I’ve never used a two-in-one reactor； Should this upgrade be to three-phase reaction, or to a separate hopper? When using hydrogen, it should be upgraded to the reactor ； Nitrogen entering will mix into the reactor; if it is to be lifted to the separation hopper, nitrogen must be used for lifting