Why are the heating steam pressures used for the reboilers of the deacidification tower and the deamination tower in phenol-amine recovery different?
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Why are the heating steam pressures used for the reboilers of the deacidification tower and the deamination tower in phenol-amine recovery different?
We use steam at 1.0 MPa here, but I heard that it was changed in phase two; presumably it’s because the required temperature is different
We use the same steam, at 1.5 MPa
Reply 1# zeng46563 To save medium-pressure steam. Generally, the Lurgi gasification system has an excess of low-pressure steam, while there is a shortage of medium-pressure steam. Thus, the twin-tower process can now use low-pressure steam for the first tower, while only medium-pressure steam is used for the second tower. The total medium-pressure steam consumption should be reduced by 25-30%.
Reply to 2#: I wasn’t confident in the first phase with my right-hand approach, but after gaining some experience in running businesses, I made changes to the subsequent designs. Hehe. The combination of low-pressure steam and medium-pressure steam can significantly reduce costs, as the excess low-pressure steam can only be used as less efficient power steam, with a value of only 20 yuan per ton.
Determined based on the process parameters required by the deacidification and deamination towers