Olefin separation unit
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This post was last edited by jordan569 on 2013-1-6 at 19:52. In a methanol-to-olefins plant, during the process of separating olefins and taking in gas, when the bottom of the deethanizer contains C3 and C2 components, is it possible to feed material into the propylene distillation column at this time? . Note # ) # # , .
Driving the equipment also depends on the circumstances: are you operating just one tower alone or several towers in series? It’s also unclear what the subsequent processing steps are after the hexane removal tower. The medium used for operation also plays a role, so it’s hard to say whether it will be possible to feed material into the subsequent stages.
It is best not to do so, as it can easily cause overpressure in the propylene column system; a small amount can be returned to the upstream system through the top reflux tank. During normal operation, the reboiling and reflux conditions of the deethanizer should be adjusted promptly. The phenomenon you mentioned generally does not occur
I’m not sure which unit you work for. In the past, when driving, there was a cutoff line at the bottom of the deethanizer that led to the storage tank area; once the C2 content at the bottom of the tower met the required standards, it would be sent to the C3 separation tower. After the operation stabilized, the unqualified C2 components would be sent back from the storage tank area for further processing
I’m not sure which unit you work for. In the past, when driving, there was a cutoff line at the bottom of the deethanizer that led to the storage tank area; once the C2 content at the bottom of the tower met the required standards, it would be sent to the C3 separation tower. After the operation stabilized, the unqualified C2 components would be sent back from the storage tank area for further processing