The MTO unit built by Sinopec at Yanshan Petrochemical has been put into operation

A 10,000-ton facility is a money sink; the longer it operates, the more losses there will be.

Has Yanshan Petrochemical’s S-MTO been introduced? Where is the catalyst used, and who designed the separation process?

In fact, this issue should be considered during scientific research, especially when working on pilot-scale tests. I believe that pilot-scale facilities should be located as close as possible to the downstream or upstream processing equipment, so as to avoid unnecessary waste.

I heard that the olefin products from Yanshan MTO cannot be polymerized? Is it true? Which well-informed person can come and clarify this?

I’m paying attention; there’s a post that also mentions the aggregation issue. I hope there will be more updates

Is it possible to compare the two technical methods?

It is said that parking will be suspended at the end of the year, and it will reopen after adjustments in the second quarter of next year. Methanol is purchased at 4,200 yuan per ton, which is also a costly expense! Going from aerobic to anaerobic is not atom-economical. SEI unit design and construction, fluidized bed reactor. SSEI provides SAPO-34 molecular sieve catalysts.

What’s the selectivity for ethylene versus propylene? The plant in Shaanxi is really not very efficient

Can olefins not be polymerized? Purely fp! No problem at all!

Those upstairs, please use polite language when asking for advice. Indeed, the methanol olefins from Yanshan cannot be polymerized at first

I get angry because some people like to speculate or spread rumors without understanding the actual situation! Excuse me, upstairs: why couldn’t the MTO in Yanshan start polymerizing at first? Do you mean it can be aggregated again later? As was said in the previous message as well: Yanshan MTO is integrated into the large ethylene plant. So are you saying that MTO products cannot be polymerized, which in turn means that the entire large ethylene plant in Yanshan cannot carry out polymerization? If not, how would you have known that MTO products couldn’t be polymerized at first? ? If you think about it carefully, the problem becomes quite clear......................... It’s ridiculous that people would believe what someone says who doesn’t even know where the catalyst or the design company is located (refer to the previous post posted by that person)! ..........

Those on the 14th floor, please stay calm; it’s understandable that people outside have misconceptions about Yanhua MTO. The olefins produced by YANHUA’s MTO can be polymerized; it’s just that at first there were some impurities in them that could have an adverse effect on the deep-cold separation process in the cracking unit (the MTO olefins are sent to the cracking unit for separation), so they were vented through flares for a while. Device modification also has this reason: lol

Because when people are interested in something that isn’t made public and there are no proper channels to obtain that information, they start to guess... If you know something about it, you could talk about it!

It seems that aside from this one, Sinopec doesn’t have any other similar projects

People come to forums to exchange ideas and improve their skills. Some organizations and projects have confidentiality requirements, so those within them don’t need to participate. If you know something, it’s fine not to say anything, but shouldn’t and can’t others discuss it either? Everyone guesses and discusses with each other, and there are surely many mistakes. In fact, keeping many technologies secret is nothing but trying to deceive oneself!

I agree with the opinion from the 19th floor; indeed, many projects these days involve intellectual property and patented technologies, as well as issues related to research progress, which require confidentiality. We’re not asking internal employees to casually disclose the secrets of their company; rather, it’s about having discussions, and within acceptable limits, learning from those discussions and making progress through them!

What significance could it have for the Baotou project? The basic design for Baotou has been completed. Sinopec’s actions in Yanshan are nothing more than a repetition of the trials conducted by Dalian Institute of Chemical Technology in Shaanxi; of course, the performance of the catalysts was slightly worse, and the subsequent separation process involved large amounts of ethylene, leaving it unclear what exactly was going on. Then why repeat it? Since the Dalian Institute of Chemical Physics is part of the Chinese Academy of Sciences, and although Sinopec Luoyang Company also contributes to the DMTO technology, there are also contributions from the CP Group and the Shaanxi Province; it is not solely Sinopec’s achievement, especially since the core catalyst technology does not belong to them. So, the great Sinopec decided to take action. As the leader in China’s ethylene industry, how could it do without its own technology? It would just develop it on its own! Thus was born the masterpiece of Shanghai Petrochemical Research Institute and SEI in Yanshan. And in fact, how much ethylene technology has Sinopec imported? ! LUMMUS’s, S &W’s, KBR’s. . . It’s just that they don’t have their own ethylene technology! The introduction of dozens of sets of ethylene production technologies was almost a world wonder – large amounts of foreign exchange were spent on acquiring redundant technologies; looking at Japan and South Korea, the reality behind this situation breaks the heart of every person in the chemical industry. Foreign technology can be introduced, but how can Sinopec purchase technology from its own citizens? After decades, the Wuhan ethylene plant that is set to be built will use SEI’s proprietary ethylene technology for the first time; no matter how late it comes, it has finally arrived. So, let’s not talk about the success or failure of the Yanshan Mountains for now, nor about the resources invested; let that be left to those who are brave and wise enough to deal with it in the future. This post was last edited by uway on 2008-5-26 14:41]

The analysis above is spot-on, pointing out the problems existing in technology development and introduction in most state-owned enterprises at present. However, the fact that most state-owned enterprises are reluctant to adopt domestic technology indicates to some extent that such technology still needs further improvement. Many foreign engineering companies offer highly detailed and comprehensive technical solutions, while many domestic companies excel in only certain aspects and lack the broader, more thorough, and detailed approaches required for engineering work. As a result, they are at a disadvantage when compared to foreign technologies. 2 This post was last edited by uway on 2008-5-26 14:40 ]

Is Sinopec that powerful? Who would dare to offend it! Anyone who annoys Sinopec will surely find ways to \"block\" them, haha; that’s why some international multinational companies are afraid of our great Sinopec, and domestic companies are even more afraid. Take a look at the so-called \"domestically developed technologies\" developed by Sinopec – every few years it seems to be either 8 dragons or 10 dragons, but in the end, which ones are actually dragons? Which one is true independent innovation, and which one is improved innovation? It seems there are more people following around, and many of them get lost along the way... But there were no failures either... Relying on leadership to drive technological development without respecting the laws governing scientific and technological progress results in few people actually doing the actual work in the end. This post was last edited by uway on 2008-5-31 09:55]

If one does not have the time and effort to thoroughly understand the technologies introduced from abroad, no matter how many times one tries to imitate them, there will still be many problems. Imagine that for a manufacturing company, what the head office demands day after day are output and safety; without strong support, who would be willing to be under constant pressure? I think this is also the main reason why various manufacturing enterprises are more inclined to introduce foreign technology. If one truly wishes to develop and fully understand the introduced technology, the overall plan should consider establishing a complete set of testing facilities, without focusing on production volume or benefits, nor on return on investment.