content in the overhead, eventually resulting in less wash water used in the scrubber. Selection of a suitable vane pack for the new loadings and an understanding of the vapour flow distribution through CFD simulation are essential to the development of the retrofit solution. Great co-operation and communication between Sulzer and the plant owner were pivotal to this successful revamp, with the process require- ments met and turnaround completed within schedule. Mellachevron is the trademark for Sulzer’s vane pack and is abbreviated as MCV. References 1 Engineering Data Book , SI Version, Vol I and II, Section 1-26, 13th Edition – SI, Gas Processors Suppliers Association, 2012. Han Yong-Chun is Regional Product Manager for Separators at Sulzer Shanghai, responsible for gas/liquid and liquid/liquid separator technol- ogy and product development, supporting Chinese refining, hydrocar - bon and chemical processing industries. He holds a bachelor’s degree in chemical engineering from Dalian University of Technology. Wu Zhi-Jiang is Application Manager for Coal Chemicals and Air Separation at Sulzer Shanghai, responsible for the application and development of the mass transfer technologies in the coal chemicals and the air separation sectors in China. He holds a bachelor’s degree in chemical engineering from Changzhou University. Ang Chew Peng is Head of Global Product Management based in Sulzer Singapore. She leads a team of global product managers within the division Chemtech, responsible for the launch, marketing and knowledge management of Sulzer product portfolio, including packing, trays, separation and mixing technology. She holds a B.Eng. (Chemical) from the National University of Singapore.
Gas with ne mist
Mist free gas
Coalesced large droplets e ciently removed by Mellachevron mist
KnitMesh as primary preconditioner operates beyond ooding point Coalesced large droplets fed to secondary Mellachevron mist eliminator
Separated liquid drains
Provisional gap, if required
Figure 6 Mesh pre-conditioner
Conclusion During the revamp study, it is important to evaluate the hydraulic capacity of the existing column internals to deter- mine the hydraulic bottleneck, as well as consider the opti- mal mechanical modification at the site to reduce cost and installation time. High-performance internals can offer high capacity and better separation efficiency, and when applied in revamps, they may require minimal modifications, leading to time and cost savings during the turnarounds. In this case story, the successful revamp of a reabsorber with a high-performance vane pack allows the column to operate at higher loading while reducing the methanol
WASH MORE. ENTRAIN LESS. Take your VDU to the next level.
Introducing the SMDmax ™.
The next generation of wash nozzle is here.
42% larger maximum free passage ††
30-60% larger droplet size † ††
300% less entrainment † ††
† when tested with water †† when compared to traditional maximum free passage style nozzles
Don’t wait for your next turnaround: www.lechlerusa.com/SMDmax
7
Revamps 2024
www.digitalrefining.com
Powered by FlippingBook