How to Use the DAIER Tower Packing Engineering Assistant
Selecting tower packing usually requires more than choosing a product name from a catalog.
Engineers may need to consider tower diameter, packing height, gas and liquid operating conditions, material compatibility, fouling tendency, packing size, and whether random or structured packing is more suitable for the project.
The DAIER Tower Packing Engineering Assistant was developed to help organize these preliminary decisions in one online tool.
It can be used to:
Screen random or structured packing directions
Compare catalog-reference packing models
Review packing material options
Review packing-size options
Calculate packing volume
Estimate packing weight
Organize project data
Generate a preliminary engineering report
The tool is intended for preliminary engineering screening and inquiry preparation.
It does not replace final hydraulic design or project-specific process calculations.
Open the Tower Packing Engineering Assistant
The tool is available online:
https://www.pxdaier.com/tower-packing-engineering-assistant.html
No special engineering software is required.
Users can enter the available project information directly in the online interface and use the results as a preliminary reference before contacting DAIER for further engineering review.
Step 1: Identify the Project Type
Before selecting packing, first identify what kind of project you are working on.
Typical projects include:
New packed tower
Existing tower packing replacement
Capacity expansion
Tower revamp
Scrubber packing replacement
Absorption tower
Stripping tower
Distillation column
Gas washing system
Other gas-liquid contacting applications
This information matters because a new tower and an existing tower usually require different screening approaches.
For an existing tower, dimensions and operating constraints are already fixed.
For a new tower, some parameters may still require further hydraulic design before final equipment dimensions can be confirmed.
Step 2: Enter the Available Tower Dimensions
Tower dimensions are important for both packing selection and quantity estimation.
Useful information includes:
Tower internal diameter
Packing bed height
Number of packed sections
Existing packing size, if applicable
Existing packing type, if applicable
Tower diameter helps establish the available cross-sectional area.
Packing height allows the tool to calculate preliminary packing volume.
For a circular tower:
Packing Volume = Tower Cross-Sectional Area × Packing Height
If the project has multiple packed sections, each section should be considered separately where necessary.
Step 3: Provide Gas Operating Information
Gas-side information helps establish the preliminary hydraulic context.
Useful data include:
Gas flow
Flow-rate basis
Operating temperature
Operating pressure
Gas composition
Gas flow should be clearly identified as actual, normalized, standard, mass flow, or another defined basis.
For example:
Actual m³/h
Nm³/h
Sm³/h
kg/h
CFM
SCFM
The flow basis matters because actual gas volume can change with temperature and pressure.
A single gas-flow number without operating conditions may not provide enough information for meaningful screening.
Step 4: Provide Liquid Operating Information
Liquid flow is also important for preliminary packing screening.
Useful information includes:
Liquid flow
Liquid composition
Operating temperature
Solids content
Viscosity if available
Fouling or crystallization tendency
Gas and liquid share the same packing passages in many counter-current packed towers.
Therefore, the tool should not be used as if gas flow were the only hydraulic parameter.
Liquid loading can affect:
Wetting
Drainage
Liquid holdup
Pressure-drop tendency
Flooding margin
Packing geometry direction
The more complete the liquid-side information, the more useful the preliminary screening can become.
Step 5: Confirm the Process Duty
Different process duties may require different packing priorities.
Examples include:
Absorption
Stripping
Scrubbing
Distillation
Gas washing
Acid-gas treatment
VOC treatment
Cooling
Humidification
A scrubber containing solids may prioritize open geometry and fouling resistance.
A vacuum distillation application may place greater importance on low pressure drop.
A corrosive absorption system may require material compatibility to be considered before packing geometry.
The tool therefore uses project information to support a packing direction, not simply a catalog lookup.
Step 6: Review Material Direction
Tower packing is available in several material families.
Typical options include:
PP
PE
PVDF
PTFE
Stainless steel
Carbon steel
Ceramic
Material selection should consider:
Chemical composition
Concentration
Temperature
Corrosion conditions
Mechanical requirements
Fouling
Cleaning method
If the available data are incomplete, the engineering assistant may keep the recommendation at a general material direction rather than presenting an unsupported exact material grade.
For more information:
https://www.pxdaier.com/tower-packing-solutions/how-to-select-tower-packing-material
Step 7: Screen Random or Structured Packing Direction
One of the main purposes of the tool is to support preliminary screening between random packing and structured packing.
Random packing may be considered for many applications where flexibility, replacement, open geometry, or fouling tolerance are important.
Structured packing may be considered where organized flow channels, low pressure drop, or specific mass-transfer requirements are important.
However:
Random packing is not automatically better for one application, and structured packing is not automatically better for another.
Selection should consider the complete operating conditions.
The DAIER tool uses the available input data to help establish a preliminary direction before detailed engineering review.
Step 8: Compare Catalog-Reference Packing Models
Once a packing family or material direction has been established, available catalog models can be compared.
Typical reference parameters may include:
Nominal size
Specific surface area
Void fraction
Bulk density
Material
Product geometry
Catalog model designation
These values can help users understand the differences between available packing options.
However, catalog-confirmed reference parameters should not be interpreted as project-specific performance guarantees.
Two packings with the same nominal size may have different geometry and hydraulic behavior.
The actual model should always be considered together with the operating conditions.
Step 9: Calculate Packing Volume
If tower diameter and packing height are known, the engineering assistant can calculate preliminary packing volume.
This is useful for:
Budgeting
Packing replacement
New tower inquiries
Freight estimation
RFQ preparation
Preliminary quantity planning
For a circular tower:
Tower Area = π × D² / 4
Then:
Packing Volume = Tower Area × Packing Height
For projects with multiple packed sections, the total quantity may require separate calculations for each bed.
Detailed guidance is available here:
https://www.pxdaier.com/tower-packing-solutions/calculate-tower-packing-volume
Step 10: Estimate Packing Weight
Once packing volume and packing reference density are available, preliminary packing weight can be estimated.
This is useful for:
Freight planning
Packing support review
Budget calculation
Export packing estimation
Commercial quotation preparation
The basic relationship is:
Estimated Packing Weight = Packing Volume × Reference Bulk Density
The result is an estimate based on the selected reference data.
Actual shipment weight may differ because of manufacturing tolerance, packaging, moisture, accessories, and final packing configuration.
More information:
https://www.pxdaier.com/tower-packing-solutions/calculate-tower-packing-weight
Step 11: Review the Preliminary Result
After the available data have been entered, the tool can provide a preliminary engineering direction.
Depending on the completeness of the input, the result may include:
Suggested packing family
Material direction
Random or structured packing direction
Catalog-model comparison
Packing volume
Estimated packing weight
Project-data summary
Preliminary engineering report
The result should be used as a starting point for engineering discussion.
It is not intended to replace detailed hydraulic design.
Why the Tool May Not Recommend an Exact Packing Model
A common question is:
Why does the tool sometimes provide only a packing family or material direction instead of one exact model?
The reason is engineering uncertainty.
If important project information is missing, an exact recommendation could suggest a level of certainty that the available data do not support.
For example, final model selection may require:
Gas flow
Liquid flow
Temperature
Pressure
Fluid properties
Fouling information
Allowable pressure drop
Tower geometry
Distributor information
Process-performance requirements
When these data are incomplete, the DAIER Tower Packing Engineering Assistant intentionally keeps the result at a preliminary screening level.
This is a feature of the engineering logic, not a limitation of the interface.
What the Tool Can Calculate
The DAIER Tower Packing Engineering Assistant can support preliminary calculations and screening such as:
Function
Tool Use
Random packing direction
Preliminary screening
Structured packing direction
Preliminary screening
Packing material
Preliminary screening
Packing size
Preliminary comparison
Catalog models
Reference comparison
Packing volume
Calculation
Packing weight
Estimate
Project data
Organization
Preliminary report
Generation
What the Tool Does Not Calculate
The tool should not be used as a substitute for final process design.
It does not automatically provide final:
Flooding velocity
Flooding margin
Guaranteed pressure drop
HETP
NTU
Mass-transfer coefficient
Separation efficiency
Tower diameter design
Guaranteed hydraulic capacity
Guaranteed process performance
These calculations may require detailed physical properties, process simulation, hydraulic correlations, packing-specific performance data, and project-specific engineering review.
When Is the Tool Most Useful?
The engineering assistant is particularly useful during the early stages of a project.
Preliminary Packing Selection
When the customer knows the process conditions but has not yet selected a packing.
Packing Replacement
When an existing tower requires replacement packing and the customer wants to compare available options.
Budget Preparation
When approximate packing volume and weight are required before requesting a commercial quotation.
RFQ Preparation
When project information needs to be organized before contacting a manufacturer.
Model Comparison
When several packing models appear similar and basic catalog parameters need to be compared.
Early Engineering Discussion
When the project is not yet ready for final hydraulic design but a preliminary material or packing-family direction is required.
Example: Existing Scrubber Packing Replacement
Consider an existing scrubber where the customer provides:
Tower internal diameter
Packing height
Gas flow
Liquid circulation rate
Operating temperature
Liquid composition
Existing packing
Fouling condition
The engineering assistant can help organize these data, calculate the packing volume, compare preliminary packing directions, and prepare information for further review.
If the existing tower has serious flooding or pressure-drop problems, however, the tool should not be treated as proof that changing packing alone will solve the problem.
The complete hydraulic system may need to be checked.
Example: Customer Only Knows Tower Diameter and Packing Height
Sometimes only basic dimensions are available.
In this case, the tool can still support:
Packing-volume calculation
Preliminary packing-family review
Material discussion
Quantity preparation
But it should not generate an unsupported exact hydraulic recommendation.
The result should remain preliminary until more process data are available.
What Information Should You Prepare Before Using the Tool?
For the most useful result, prepare the following information whenever possible:
Tower Data
Tower internal diameter
Packing height
Number of beds
Existing packing
Existing internals
Gas Data
Gas flow
Flow basis
Temperature
Pressure
Composition
Liquid Data
Liquid flow
Composition
Temperature
Solids
Fouling
Viscosity if available
Project Requirements
Process duty
Material preference
Pressure-drop limitation
Existing operating problem
New tower or replacement project
Capacity increase if applicable
For a complete guide:
https://www.pxdaier.com/tower-packing-solutions/what-data-is-required-for-tower-packing-selection
Start Preliminary Tower Packing Screening
The DAIER Tower Packing Engineering Assistant is designed to help engineers, equipment suppliers, procurement teams, and industrial users organize early-stage tower packing decisions before detailed engineering review.
Use the tool to:
Screen packing direction
Compare catalog-reference models
Calculate packing volume
Estimate packing weight
Prepare project information
Generate a preliminary engineering report
Start here:
https://www.pxdaier.com/tower-packing-engineering-assistant.html
Frequently Asked Questions
Is the DAIER Tower Packing Engineering Assistant free to use?
The online engineering assistant can be accessed directly from the DAIER website for preliminary project screening and engineering reference.
Can the tool select an exact tower packing model?
It can compare catalog-reference models and support preliminary selection.
If operating data are incomplete, the result may remain at a packing-family, material, or structural direction instead of presenting an unsupported exact model.
Can the tool calculate tower packing quantity?
Yes.
If tower diameter and packing height are available, the tool can calculate preliminary packing volume.
Reference bulk density can then support packing-weight estimation.
Can the tool calculate pressure drop?
The tool should not be interpreted as a final project-specific pressure-drop calculator.
Final pressure drop depends on operating conditions, packing geometry, fluid properties, bed height, and hydraulic data.
Can the tool calculate flooding?
No final flooding guarantee should be derived from the preliminary screening result.
Flooding evaluation requires complete gas-liquid operating data and detailed hydraulic calculations.
Can I use the tool for an existing tower?
Yes.
Existing tower dimensions, current packing, operating conditions, and the reason for replacement are especially useful for preliminary comparison.
Can I use the tool if I do not have complete process data?
Yes.
You can begin with the available information.
However, when important data are missing, the result should remain preliminary rather than being interpreted as a final engineering recommendation.
Engineering Limitation
The DAIER Tower Packing Engineering Assistant is intended for preliminary engineering screening, catalog-reference comparison, quantity estimation, project-data preparation, and early-stage engineering communication.
DAIER Factory Reference Data and catalog-confirmed reference parameters can support preliminary comparison but do not constitute project-specific hydraulic, pressure-drop, flooding, HETP, mass-transfer, capacity, or performance guarantees.
Final tower packing selection may require complete operating conditions, fluid properties, tower geometry, liquid-distribution information, packing-specific hydraulic data, and project-specific engineering calculations.
Final process and hydraulic performance should be confirmed through appropriate engineering review.
Pingxiang Daier Separation Tech Co., Ltd.
DAIER Separation Technology
Manufacturer since 2009 | Preliminary Engineering Support | Custom Manufacturing