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Molecular sieve issue

2015-11-13View Original

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Why does the molecular sieve in our unit heat up very quickly when exposed to hot air? What’s going on? Also, when the medium is natural gas, the temperature remains normal; but once air gets in, the temperature of the drying tower rises rapidly. Furthermore, molecular sieves lose their effectiveness after reaching a certain temperature and can no longer perform adsorption. Does anyone know this? Thank you in advance
Reply #22015-11-13
What type of molecular sieve do you have, in what applications is it used, and what is the consumption level? I would like to learn about the market situation; we are engaged in the research and development of molecular sieves
Reply #32015-11-13
Our unit is cylindrical in shape, weighing around 3 tons. Our unit is used for processing natural gas, while you guys are involved in the development of molecular sieves. At what temperature and for how long does it take to damage such molecular sieves? Could someone expert please provide an answer?
Reply #42015-11-13
I don’t know what the chemical structure is; we’ve just started, and I’ll ask the experts when I get back
Reply #52015-11-13
Molecular sieves release heat during regeneration, so the temperature rises!
Reply #62015-11-13
First of all: I can’t understand what kind of process this is – why use air for drying? Moreover, first there’s natural gas, and then a rush of air – it sounds pretty dangerous. Secondly: the air heats up quickly, perhaps due to different lumped heat transfer coefficients. Finally, “at what temperature can it no longer be used?” “What does “can’t be used” mean?
Reply #72015-11-14
How is air used for molecular sieve regeneration? Won’t the moisture in the air be adsorbed by the molecular sieve? It’s all absorbed water – how can impurities be removed?
Reply #82015-11-14
It must be air that has been separated, right?
Reply #92015-11-15
I know that. The key point is that now air has entered; the temperature suddenly rose from 200 degrees to 350 degrees. Once that air was gone, the temperature of the furnace rose straight from 350 degrees to over 500 degrees
Reply #102015-11-15
Normally, it is natural gas; later on, air was used to clean the pipelines. That’s how air got into the system. Once air entered, the temperature in the drying tower increased. The issue is whether the molecular sieve can still function properly when the temperature rises above 500 degrees
Reply #112015-11-15
Air has suddenly entered the pipeline; under normal circumstances, it should be natural gas

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