Distillation Column Internals
Column internals for new equipment and defined replacement duties. ATTOMO reviews process loads, column geometry, material requirements and installation constraints before selecting or fabricating the internals.
Process and equipment approach
Trays and other internals create contact between vapour and liquid. Selection balances separation performance, hydraulic capacity, pressure drop, operating range and fouling behaviour. A suitable choice for one duty is not automatically the best for another.
Applications and product requirements
Column internals distribute and contact vapour and liquid in distillation, absorption and stripping service. The correct package depends on whether the column uses trays, packing or a combination. A new column, a replacement component and a process revamp require different checks.
Equipment and operating approach
Internals may include tray decks, downcomers, supports, liquid distributors, collectors, packing supports and mist-separation elements where specified. Their arrangement affects distribution, pressure drop, liquid hold-up and maintainability. A distributor intended for one flow range may not perform correctly at another; internals must be evaluated with the column process duty.
Simplified equipment illustration — not a fabrication drawing or project photograph.
Define the right package.
The quotation defines the included equipment, services and battery limits.
- Specified tray and internal assemblies
- Supports, beams and attachment interfaces
- Material and fabrication documentation as agreed
- Replacement and installation-interface review
Materials and configuration
Material, corrosion allowance, joint details, tolerances and fastening arrangements follow the fluid and installation conditions. ATTOMO’s drawing-based fabrication and any hydraulic-design scope must be separately identified. Existing-shell projects need verified dimensions, support locations, access openings and lifting or assembly restrictions.
Utilities and operation
Supply minimum, normal and maximum flows, fluid properties, pressure, temperature, fouling and foaming information. Inspection before installation should confirm fit, level, cleanliness and orientation. Reduced pressure drop or improved capacity must be supported by a defined comparison, not inferred from installing new internals.
Information for your enquiry.
Share the information you already have. Early-stage enquiries are welcome.
- Column diameter and internal arrangement
- Vapour and liquid design cases
- Required separation and pressure-drop limits
- Corrosion, fouling and access requirements
Frequently asked questions
Can new internals fit an existing column?
A replacement review needs verified drawings, support details, access constraints and process loads. Fit and performance must both be checked.
How should tray type be selected?
Compare the required operating range and hydraulic conditions with fouling, pressure drop, material and maintenance constraints.
Should a column use trays or packing?
The separation duty, pressure drop, liquid loading, fouling, turndown and maintenance needs determine the choice. Both the process and mechanical arrangement require review.
Can one damaged internal be replaced?
A component replacement can be scoped from drawings, dimensions, material and inspection requirements. Check adjacent parts and the cause of damage before finalising the repair.
What is required for a column revamp?
Provide operating cases, current performance, shell and internals drawings, utility limits and the required improvement. The whole separation system must be assessed.