HYDROCRACKING
temperature process fluid and critical areas inside the valve body , these sleeves effectively eliminate a major pathway for heat movement .
3 . Radiation : Advanced thermal sleeves often incorporate ceramic coatings on their inner surface . These coatings are designed to reflect radiant heat back towards the process fluid , further minimizing heat transfer to the valve body . The combination of 3D printing technology and ceramic coating in thermal sleeve design offers several advantages :
• Precision manufacturing : 3D printing allows for the creation of complex , double-walled structures with precise specifications , optimizing thermal protection .
• Enhanced thermal resistance : Ceramic coatings provide an additional layer of thermal insulation , improving overall heat management .
• Corrosion and fouling resistance : Many ceramic coatings also offer excellent resistance to corrosion and fouling , enhancing the durability and longevity of the sleeve in harsh process environments .
These innovations in thermal protection technology enable valves to withstand the extreme conditions typical in residue hydrocracking processes , significantly improving reliability and reducing maintenance requirements .
Advanced gasket technology in severe service applications
In residue hydrocracking processes , where extreme temperatures , high pressures , corrosive substances and significant mechanical stress are commonplace , the reliability and durability of gaskets are paramount . Recent advancements in gasket technology , such as Velan ’ s Securaring™
Velan purge control panel gold-plated gaskets , have emerged as critical components in these demanding environments , offering exceptional performance and longevity . Gold-plated gaskets represent a significant leap forward in sealing technology for severe service applications . Their unique properties address several key challenges in hydrocracking processes : 1 . Corrosion resistance : Gold ’ s inherent resistance to corrosion , even when exposed to aggressive chemicals and gases , makes these gaskets ideal for environments where standard materials rapidly degrade . This resistance ensures long-term seal integrity in the presence of corrosive process fluids .
2 . Thermal stability : Gold maintains its properties across a wide temperature range , from cryogenic conditions to extreme heat . This stability is crucial in hydrocracking processes , where temperatures can fluctuate dramatically , ensuring consistent sealing performance under varying thermal conditions .
3 . Chemical inertness : The non-reactive nature of gold provides a robust barrier against chemical attacks that could compromise the seal . This inertness is particularly valuable in processes involving complex hydrocarbon mixtures and catalysts .
4 . Electrical conductivity : In highly combustible environments , the electrical conductivity of gold offers an additional safety benefit . By facilitating the dissipation of static electricity , these gaskets help prevent spark generation , reducing the risk of fires or explosions .
5 . Durability : Gold-plated gaskets exhibit excellent wear resistance , crucial for maintaining seal integrity in highpressure and high-stress environments . This durability translates to extended service life and reduced maintenance frequency . Velan ’ s Securaring™ gold-plated gasket incorporates these advantages while also addressing a common issue in gasket design . Its unique rib profile , securely positioned between the valve body and bonnet , prevents gasket rocking . This feature is critical as it ensures even distribution of sealing forces across the gasket surface . Uneven loading , a common problem with conventional gaskets , can lead to valve body leakage , compromising both safety and efficiency . The implementation of such advanced gasket technologies goes beyond mere component improvement . It represents a systemic approach to enhancing the overall reliability and safety of hydrocracking
Velan Programmable Logic Controller and control panel
units . By minimizing the risk of leaks and extending maintenance intervals , these gaskets contribute to increased operational uptime and reduced lifecycle costs .
Automation in residue hydrocracking units
Residue hydrocracking units in oil refining involve many interacting components : valves , purge systems , heat tracing systems and reactors . Managing these operations by hand is difficult , error-prone , and can put workers at risk . For these reasons , refineries use Programmable Logic Controllers ( PLCs ) and control panels to automate these processes . Automation in hydrocracking units offers several benefits : 1 . Precision and accuracy : Automated systems control valves , purging and heating cycles more accurately than manual operation . This reduces errors that could affect product quality or safety .
2 . Safety : PLCs can detect unusual conditions quickly and trigger alarms or shutdowns to prevent accidents .
3 . Efficiency : Automated control adjusts operational settings to reduce downtime and improve unit efficiency .
4 . Data logging and analysis : PLCs record operational data , which helps with monitoring , analysis , maintenance planning and process improvements . These automation systems play a crucial role in enhancing the safety , efficiency and reliability of residue hydrocracking units .
PLC-controlled systems in residue hydrocracking
Programmable Logic Controllers ( PLCs ) are essential in managing the complex operations of residue hydrocracking units . These systems offer precise control , enhanced safety and improved efficiency . Here ’ s an overview of key applications :
30 Valve World November 2024 www . valve-world . net