Black particles appear in the pneumatic transport of resin particles

The appearance of black particles may be caused by impurities or contaminants mixed in the resin particles, or by mechanical wear. The treatment methods can include the following aspects: 1. Inspect the resin raw materials: Check for any impurities in the raw materials, and try to select those of better quality in order to minimize adverse effects. 2. Clean the delivery pipelines: Regularly remove impurities and residues from the pipelines to prevent blockages and cross-contamination. 3. Optimize operating parameters: Adjust parameters such as air flow velocity, temperature, and humidity to ensure that the resin particles do not suffer excessive mechanical damage during transportation. 4. Regular equipment maintenance: Periodically inspect and maintain the conveying equipment to ensure its proper operation and reduce the occurrence of failures. In summary, various measures can be taken to reduce the occurrence of black particles during the transportation of resin particles, thereby ensuring product quality and production efficiency. .

Check whether the material has contaminated the magazine

:(In the polypropylene plant’s pneumatic conveying system, there is black material; it is necessary to first check for oil on the surface of the particles, or inside the particles themselves (i.e., the black particles). In the case of oil on the surface, one should examine whether there are any leaks in the pneumatic conveying system and sampling system. As for the black particles, it is necessary to check whether there are any abnormalities in the upstream systems; generally, this is due to contaminants entering from the additive system or from the polymerization system, and it is required to investigate each possibility one by one.)

Could it be that carbonized particles are caused by local dead zones in the granulation system or excessive temperatures? I’m not familiar with the specifics of how it operates either, but I think that with simple pneumatic conveying, at most it will cause wear on the pipes and lead to issues such as stringing ； It is also possible that foreign objects from the bearings of external moving equipment have seeped into the material.

The appearance of black particles may be due to impurities mixed in the resin particles