Random Packing
Chandrakant Joshi | Head Applications and Technology | February 24, 2016
Wide range of applicability Sulzer Chemtech
Training material Structured and random packings e / 2009 / 2
Random Packing Sulzer Chemtech
R-Ring Advantages
• First generation of random packings, industry
experience outperforms fractionation trays.
• Great strength-to-weight ratio.
• Direct replacement of the well known Raschig
Ring.
Material and Sizes
• Available in most metals
• Sizes in 5/8”, 1”, 1.5”, 2” & 3.5”
Training material Structured and random packings e / 2009 / 3
Random Packing Sulzer Chemtech
P-Ring Advantages
• Highest industry experience and extensively
tested by research institutes worldwide.
• Material thickness overcomes mechanical
weaknesses, and can be used in extremely
corrosive services enabling cheaper materials
to be used.
• Strength-to-weight ration stronger than most
other random packings.
• Direct replacement of the well known
Pall®Ring.
Material and Sizes
• Available in most metals
• Sizes in 5/8”, 1”, 1.5”, 2” & 3.5”
Training material Structured and random packings e / 2009 / 4
Random Packing Sulzer Chemtech
I-Ring Advantages
• I-Rings provide over 30% lower pressure drop
than Pall® Rings.
• Revolutionary design enhances greater
capacity and efficiency than other random
packings.
• Geometric design minimizes liquid hold-up.
• Direct replacement of the widely used IMTP®.
Material and Sizes
• Available in most metals
• Sizes in #15, #25, #40, #50 & #70
Training material Structured and random packings e / 2009 / 5
Random Packing Sulzer Chemtech
Nutter Ring Advantages
• Efficiency enhanced by lateral liquid spreading
and surface renewal.
• Superior surface utilization in mass and heat
transfer, allowing shorter packed bed heights.
• A high performance random packing verified
by tests conducted at Fractionation Research
Institute (FRI).
• Mechanical form provides maximum
randomness with minimal nesting.
Material and Sizes
• Available in most metals
• Sizes in #0.7, #1.0, #1.5, #2.0, #2.5 & #3.0
Training material Structured and random packings e / 2009 / 6
Random Packing- critical aspect of sizing Sulzer Chemtech
● F-factor= Gas Vel( m/sec)x√ Gas density(Kg/m3)
● Beyond certain F-factor efficiency starts dropping
● The efficiency will not vary as per Liquid load provided
distributor is already designed for that range
● Higher the size of ring, lower the efficiency
● Lower the size of ring , higher the efficiency
● Lower the size of ring , higher the no. of rings that can
be accomodated in given volume
● Lower the size , Lower is the capacity
Training material Structured and random packings e / 2009 / 7
Random Packing- critical aspect of sizing Sulzer Chemtech
Pressure drop
● F-factor= Gas Vel( m/sec)x√ Gas density(Kg/m3)
● Beyond certain F-factor pressure drop increases expo.
● The pressure drop will depend upon Liquid load
● Higher the surface higher the Pressure drop
● Pressure drop at given f-factor does not so
much dependent on operating Pressure
● Capacity dependent on system factor /
foaming tendency
Training material Structured and random packings e / 2009 / 8
Sulzer NeXRingTM Sulzer Chemtech
• The performance was tested both in in-
house R&D facilities and FRI
• Key features
• Large uniform open area provides high
capacity regardless of the ring orientation
• Good exposure of surface area to liquid and
vapor to minimizing dry zones on the packing
surface
• Higher capacity, equivalent efficiency at
lower pressure drop compared to 3rd NeXRing™ 3D model
generation random packing
Training material Structured and random packings e / 2009 /
Sulzer Nexring -Improved capacity and
Efficiency Sulzer Chemtech
Training material Structured and random packings e / 2009 /
Sulzer Nexring -Improved capacity and
Efficiency Sulzer Chemtech
Training material Structured and random packings e / 2009 /
