MTP space velocity
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This post was last edited by jordan569 on 2013-1-6 21:30. If I use an Mg-modified HZSM-5 catalyst, what should the typical space velocity be? Is there any basis for choosing it? Please specify whether it refers to mass space velocity, liquid space velocity, or gas space velocity. Thank you. Note: # ) # # , . hcbbs
Are you working on catalyst research and development or experiments? The space velocity is determined by the performance of your catalyst; if your conversion rate and selectivity are high, then a higher space velocity is preferable, as it allows for a larger processing capacity. Of course, in actual industrial applications, the effects on the reactor also need to be taken into consideration. Furthermore, the space velocity also has an impact on carbon deposition on the catalyst. Overall, this is a parameter in the design of reactors and reaction processes, and it needs to be determined based on the performance evaluation of your catalyst. Of course, you might need a rough range. Based on my previous experience, the experimental space velocity for MTP can be around 1–10, with methanol and water as the feedstocks, and it is calculated based on the mass space velocity of methanol. You can give it a try.
This post was last edited by determinedly on 2011-11-1 11:27. Reply to 1# 895440053: It is generally the equivalent methanol mass space velocity; it needs to be greater than 1, otherwise there is little effect of modification.
In industry, the mass space velocity of methanol is around 0.7–1
LURGI MTP: methanol feed at 208 t/h; two reactors in operation with one as standby, each reactor equipped with 150 t of catalyst. Air velocity = 208 t/h / (150 t + 150 t) = 0.7 h^-1