Adjustment of carbon dioxide in propylene
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How can I adjust it when the carbon dioxide level is high in propylene? Is this impurity present at high levels in your propylene?
Find the cause – where is the problem? If it were us, the problem might lie in the alkali washing step; we would adjust the alkali concentration as well as the volume of the alkali washing solution, along with temperature and pressure, making appropriate adjustments based on the specific circumstances.
Yes, adjust the circulation rate to allow the desulfurizer to absorb it?
Is it effective? What is the carbon dioxide content in the propylene of your company?
Increasing the circulation volume doesn’t have much effect either
The CO2 content in propylene is at most trace amounts, namely 1–2 ppm; this issue still needs to be addressed through the purification units for polypropylene.