The Application Of Centrifugal Pumps In Polypropylene Production

Polypropylene is an excellent thermoplastic synthetic resin,with the proportion of small,non-toxic,easy processing,anti-deflection,and good electrical insulation,etc.,are widely used in injection molding,squeeze tubes,blown film,coating,spinning,modified engineering plastics and other industrial and civil plastic products in the field.Volatile due to the production of liquid propylene,easy to leak and leak hazardous(explosive limit of 2%to 11%,and is a colorless,odorless,with a little sweet gas)require a higher pump seal in the transportation engineering.With the improvement of the production process,the liquid propylene containing solid polypropylene powder,shielding pumps,such as zero-leakage pump is no longer applicable to the transportation of propylene,the need to choose a new delivery vehicle to transport this liquid propylene.The centrifugal pump has a simple structure for a wide range.But in the process of conveying propylene mechanical seal often leaks,damage and other problems affecting the production of smooth,also brought problems to production safety.Checking of various parameters of the mechanical seal,we found their service life is low,likely to reveal the root cause and find a reasonable size parameters.Improved mechanical seal of the most common life of 18 months of continuous operation.Very important to resolve the centrifugal pump mechanical seal leakage in the process of liquid propylene and the frequent damage to the safe and stable production to reduce the status of equipment failures and the resulting material loss to reduce the threat to security risks,the protection of polypropylene significance.Centrifugal pump technology is maturing,reliable and user-friendly operation,easy adjustment and maintenance,so also has a significant role in the control of investment and lower production costs.Propylene similar to the transmission medium has a certain reference value.