Components to consider in the MTO reaction
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This post was last edited by jordan569 on 2013-1-6 20:10. What are the components produced by the mto reaction? What’s the yield? . Note $ # , $ $
Reply 1# ywldiban: It is mainly ethylene and propylene, with a yield of 78-79%.
Reply to 2# jiazhuang*an1: The main components have been identified; I just want to know in detail what the by-products are, so that I can carry out an Aspen simulation
Reply to 3# ywldiban: The main products are C2 to C4 olefins, of which ethylene and propylene account for about 80%, while butylene makes up around 10%. The main hydrocarbon by-products include methane, ethane, propane, and butane; there is also about 1% of alkane and olefin components with a molecular weight of C5 or higher. Small amounts of hydrogen, CO, and CO2 are also produced, but these are generally ignored. DME levels become more significant during periods when the catalyst is deactivated or at high space velocities; moreover, carbon deposition occurs in large quantities and quite rapidly. I’m not sure whether you use Aspen to simulate reactions or separations; if it’s for simulating reactions, it’s recommended to use kinetic models and write code manually for the calculations.
Reply to 4# kevin717: Thanks for the explanation. The main goal is to simulate separation; is a simple yield reactor suitable for this purpose?
This post was last edited by t18l on 2011-5-20 15:47. Reply to 5# ywldiban: How can you simulate something without knowing its components? You can check the patents; the main by-products and the general composition should be disclosed there
LS is right; to conduct simulations, data constituting the system are necessary. For reactions whose product composition is greatly influenced by temperature and space velocity, kinetic data is required in order to calculate the product composition with greater accuracy
Reply to 7# kevin717: Well, thermodynamic data is very difficult to find, so I plan to work on the separation part first and get the overall process outlined roughly. I’m just starting with Aspen; I don’t know how to program, so I want to begin with something simple first.
Reply to 6# t18l: Yeah, thanks!