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Dec 4, 2018
Efficient polymerization with the right valves
Head of Industry, Power to X and Gases
Although polymerization might look chemically simple, the polymerization process gets tricky with inappropriate valves. If you’re looking for tips on choosing the right valves for efficient plastic production, this blog is for you.
High-cycle valves for polymerization
The function of valves in polymerization reactors varies, depending on the process stage. They can be used for product conveyance, isolation, gas venting or pressure balancing. But all these applications call for reliable, high-cycle valve operation.
Polymerization calls for robust valve performance − from 100,000 up to 1,500,000 cycles per year, with a stroke time of less than three seconds. Also, the process involves high pressure differences and vibration-affecting devices. And mediums often contain abrasive elements, while continuous polymerization can lead to polymer growth in valve parts.
A metal-seated ball valve design with long-lasting tightness and cycle life is critical for this type of application. Polymer-proofing is a must if you want to make sure polymers do not penetrate behind the seat, seizing your valves. Also abrasion caused by a catalyst can be a problem for valves. This must be taken into account when selecting the suitable valve type.
Valves must be equipped with instrumentation according to site-specific conditions. Plus, diagnostic capabilities allow proactive maintenance planning and valve condition monitoring.
Our experts can guide you through the kinds of valves best capable of handling polymerization. They can show you how details matter and help choose the optimal selection for your setup.
Benefits of correct valves
Safety, long lasting tightness and cycle life
Reliable operation with wiping seat design
Emission-proofing with rotary technology and standard live loaded packing
Avoid polymer build-up in cavities
Diagnostic capabilities from basic to extensive, according to application and maintenance planning requirements
Possible to produce enhanced quality polymers that require new types of catalysts and metal-seated valves
Possible to equip valves with instrumentation according to site-specific requirements
If you are interested in learning more about how high-cycle valves are used in the polymerization process, you can read more from this application report.
The text has been up-dated in July 2020, due to company name change to Neles.
Propylene is the second most valuable intermediate in the petrochemical industry after ethylene. Are you able to keep your production of propylene up at the right levels to meet increasing global demand? It may be that your propylene production is compromised by an inefficient process. How can better valves help you boost your production and reduce cost?
For efficient and safe plastics production, a polymerization unit relies on numerous control and on-off valves. It’s vital to know you can count on those valves to do their job at all times. The selection of the right valve for each step requires careful consideration. And every detail matters when it comes to running a reliable, profitable plant.