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Alkylation

Koch-Glitsch has the experience and equipment to assist refiners with their Alkylation unit towers. Whether the issue is capacity, or fouling in the DIB, Koch-Glitsch can provide the process and equipment solution.

Equipment | References | Case Studies | Technical Papers | FAQ

Koch-Glitsch Equipment
Both our tray and packing products have been installed in Alkylation units. Our variety of trays, especially, can expand capacity while providing fouling resistance with fixed valves. The reference list demonstrates the variety of our Mass Transfer tray technology utilized in Alkylation units.

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References
This represents a partial listing of our success in applying the right equipment to the diverse towers throughout the Alkylation unit. Please contact us if you are interested in any further details.

Service Diameter Equipment
Deisobutanizer 11'-6" / 12'-6" High Capacity Tray
  11'-0" High Capacity Tray
Alkylate Splitters 5'-0" High Capacity Tray
Isostrippers 6'-0" SUPERFRAC®
  15'-6" High Capacity Tray
  9'-9" Fixed Valve / Sieve
  9'-9" Fixed Valve
  4'-0" / 9'-6" FLEXITRAY® Type T
  15'-7" Sieve / Bubble Cap
Main Column 10'-6" High Capacity Tray
Depropanizers 7'-3" / 9'-2" FLEXITRAY® Type A
  3'-3" FLEXITRAY® Type A
Stabilizers 4'-0" / 8'-0" FLEXITRAY® Type A
Acid Regenerators 1'-5" Bubble Caps
HF Strippers 1'-5" FLEXITRAY® Type T
Deethanizers 2'-11" / 5'-0" FLEXITRAY® Type T
DME Strippers 3'-3" FLEXITRAY® Type A
C4 Splitters 4'-6" FLEXITRAY® Type S
C3 Splitters 8'-10" / 6'-10" FLEXITRAY® Type A


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Case Studies
Analysis & Correction of Alky Deisobutanizer’s Design Flaws - Project Report 220

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Technical Papers
Refiner Reduces Benzene in Reformate by 60%”, Project Report 139.
Request This Technical Article

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FAQ
Q: How do you protect against fouling in DIB towers?
A: Koch-Glitsch has a wide selection of fixed valves to address fouling concerns. This variety is necessary to have a design that has the correct balance between capacity, fouling resistance, & operating range. We have the experience to know where each should be applied.

Q: Why do I need fixed valves for antifouling protection when sieve trays are as good?
A: Sieve holes do provide good antifouling protection. However, they promote greater entrainment than fixed valves. The horizontal velocity component of vapor exiting fixed valves reduces this entrainment, thereby providing increased capacity over a wider operating range while still providing fouling protection.

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