Why is the bottom loss in the propylene distillation column high?
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Why is the bottom loss in the propylene distillation column high in the DMTO process?
Is this related to the ratio of one tower to two towers in the tower design, or to the heat loads of the first and second towers, or to the distillation tray arrangement, or perhaps to the feed temperature?
There is a certain loss of propylene at the bottom of the propylene distillation tower. Tower equipment failures are not considered. First, propylene and propane are difficult to separate. When the losses are too high, the heat load on the tower bottom and the reflux rate of the entire tower can be adjusted. Furthermore, when the propylene level in the tower bottom is high, the propane recovery can also be appropriately reduced. It features a reboiler with online table adjustment for Tower No. 1.
Send the DCS photos; just take a look.
What is the purity of your propylene? I think the distillation effect isn’t meeting the product requirements, so let’s increase the losses
It must be a handling issue; the propylene content in propane can definitely be kept below 1% mo. l