Drying Unit — Implemented in DyssolPro

Spray Dryer Simulation for Solids Processes

Use spray dryer simulation software for co-current and counter-current spray drying inside a full dynamic flowsheet. Track droplet evaporation, particle growth, outlet moisture, and downstream separation — all in one process simulation.

Proven on industrial flowsheets including porcelain tile manufacturing and zeolite production. Backed by TUHH research.

Two dedicated variants in the library

Ready to drop into any flowsheet, no generic drying placeholder required.

Both co-current and counter-current spray dryers are first-class units. Configure them, connect upstream nozzles and downstream cyclones, and run the flowsheet.

Implemented unit

Spray dryer co-current

Feed and gas flow in the same direction. Commonly selected when lower product temperature exposure is important.

Implemented unit

Spray dryer counter-current

Feed and gas flow in opposite directions. Commonly selected when residence time and outlet-moisture control are priorities.

Spray drying in the full flowsheet

Set up the spray dryer unit, connect the surrounding process, and run the simulation.

Choose the spray dryer variant

Choose either the spray dryer co-current or spray dryer counter-current unit from the library, depending on the flow arrangement you want to study.

Connect the surrounding process

Place the spray dryer in a larger flowsheet with implemented upstream and downstream units such as nozzle, cyclone, filter gas, heat exchanger, fluidized bed, or rotary kiln.

Run the dynamic study

Evaluate spray drying inside a dynamic flowsheet and track particle-centered properties such as size, composition, and moisture across connected units.

Co-current and counter-current units

Two implemented units for different flow arrangements.

Unit Flow arrangement Typical priority
Spray dryer co-current Feed and gas flow in the same direction. Lower product temperature exposure is important.
Spray dryer counter-current Feed and gas flow in opposite directions. Residence time and outlet-moisture control are priorities.

Other implemented units that sit upstream or downstream of a spray dryer.

Every unit below is implemented and ready to connect in a realistic process model.

What DyssolPro brings

Capabilities that matter for spray drying process teams.

Dynamic flowsheet simulation

Time-dependent simulation covering startup, shutdown, batch, semi-batch, and continuous operation.

Multidimensional solids properties

Particle-centered modeling with interdependent properties: size, composition, and moisture across connected units.

Population-balance workflows

Full PSD tracking for spray drying tasks where droplet and particle evolution matter.

Custom model development

Model Maker for implementation, testing, and validation of company-specific spray dryer models.

Typical engineering studies

Common spray drying studies in DyssolPro.

Dynamic operating scenarios

Evaluate spray drying inside startup, shutdown, batch, semi-batch, and continuous flowsheet scenarios instead of limiting the study to steady-state behavior.

PSD, composition, and moisture

Use particle-centered, multidimensional property handling and population-balance workflows when particle size distribution, composition, and moisture evolution matter.

Sensitivity studies

The integrated sensitivity analysis tool is available for implemented process units, which makes it suitable for spray drying parameter studies in DyssolPro.

Optimization studies

The integrated optimization tool is available for implemented process units, so spray drying studies can be evaluated against target process or product properties.

Related application examples

Documented flowsheets where spray drying is one step of the full process.

Existing application example

Industrial zeolite production

End-to-end catalyst process with synthesis, decanter washing, spray drying, and rotary-kiln calcination. Dyssol connected the downstream units into one process-level flowsheet.

Source: Processes 2022, 10(10), 2140

Technical FAQ

Does DyssolPro include spray dryer models out of the box?

Yes. Both spray dryer co-current and spray dryer counter-current ship with the software.

Can spray drying be evaluated together with other process steps?

Yes. Existing examples place spray drying inside porcelain tile manufacturing and industrial zeolite production flowsheets.

Is this limited to steady-state studies?

No. DyssolPro is a dynamic flowsheet simulator and supports time-dependent process behavior by default.

What if a project needs a more specific spray dryer model?

Model Maker supports custom model development, and DyssolTEC offers implementation services for company-specific models.

Can DyssolPro run spray dryer sensitivity studies?

Yes. The integrated sensitivity analysis tool is available for implemented process units in DyssolPro.

Can DyssolPro optimize spray drying studies?

Yes. The integrated optimization tool is available for implemented process units in DyssolPro.

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