Reasons for the high amount of fine powder in gas-phase polypropylene
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This post was last edited by ljtjbx on 2015-10-7 08:12. In polypropylene production facilities using the gas-phase process, a large amount of fine powder is generated during the manufacture of impact-resistant copolymers; this powder can easily cause blockages in pipelines and cyclone separators. Does anyone know what the reason for this is?
Oops~ I’m sorry~ It was posted in the wrong place~ Please help move it, moderator! Thank you!
This post was last edited by ljtjbx on 2015-10-7 08:14. I’d like to know the reason too, thank you.
Are you referring to the two-ring-one-gas loop process of the liquid-phase matrix? Could you provide more details? That will help everyone answer the question.
It depends on your pneumatic conveying method and distance; you can install a dust remover.
The main gas velocity is related to the properties of the material; try using a different grade or a different catalyst
The main reason is attributed to the catalyst; the use of large amounts of hydrogen in the bulk polymerization leads to high activity at the beginning of the polymerization process, which results in the fragmentation of the spherical polymer particles. The solution is to improve the degree of pre-polymerization or replace the catalyst.
Increase the pre-polymerization temperature and reduce the density of the large-loop tube.
I also think it’s due to the catalyst; I’m not very familiar with hydrogen yet