Choose a starting point from the feed form, operating mode and process limits—not from an equipment name alone. This portfolio demo compares three common drying routes and shows the project data a real supplier would need before making a recommendation.
Selection boundary These three types do not cover every drying duty. A paste, sticky sludge, large wet lump or feed with an unresolved hazard may need another process.
02 / Feed form
The First Question Is Physical Form
Can the feed be pumped and atomized?
A spray dryer can be a useful starting point for a stable liquid or slurry. Record solids content and viscosity at a stated temperature. Settling, abrasion or rapid thickening can change pumping and atomization. The required powder moisture, particle size and recovery also belong in the first review.
A fluid bed depends on air moving through the particles. Share the full particle-size range, not only an average. Bulk density, moisture, stickiness and fragility affect fluidization and retention time. Very fine, cohesive or easily damaged particles may require trials or a different arrangement.
A double cone vacuum dryer is a batch starting point for solids that can move as the vessel rotates. Define wet load, bulk density, working volume and the liquid to remove. Discharge behaviour, product heat limits, solvent properties and cleaning requirements must be reviewed together.
Spray and continuous fluid bed examples use kg/h, but the basis must be named. Feed rate is not the same as dry product output. Moisture removal, solids retention and expected losses change the result. State operating hours, turndown and upstream feed variation.
Batch duties
Vacuum examples use litres of working volume and kilograms per batch. A batch size does not become kg/h until filling, heating, drying, cooling, sampling and discharge time are known. State the expected cycle and identify which steps are included.
04 / Process limits
“Heat-Sensitive” Is a Starting Point, Not a Selection
Provide a measurable product limit and the method used to assess damage. Short exposure in a spray dryer may suit one material, while reduced pressure in a vacuum dryer may help another. Neither statement guarantees a result. Fluid beds can provide controlled particle drying, but product temperature, residence time and air conditions still need agreement.
Also identify solvents, dust behaviour, oxygen sensitivity, corrosion, contamination limits and cleaning needs. Those inputs affect process safety, materials of construction, exhaust treatment and the test plan. This demo does not claim explosion protection, hygienic construction, containment or certification.
05 / Prepare a useful review
Bring Comparable Project Data
Material and liquid
Composition, water or solvent, feed form, safety data and any known corrosion concerns.
Capacity and moisture
kg/h or kg/batch with units, initial and target moisture, moisture basis and expected operating hours.
Product limits
Maximum product temperature, particle target, acceptable breakage, recovery needs and quality checks.
Site and scope
Utilities, layout limits, cleaning, emissions, documentation and responsibility boundaries.
Use measured values when possible and mark assumptions clearly. Write “Unknown” for missing information instead of inventing a number. A real supplier can then identify the gaps, propose a representative test and state what can—or cannot—be confirmed.
06 / Detailed page demos
Continue With a Candidate Process
Liquid or slurry
Centrifugal Spray Dryer
Review sample mass balances, atomization inputs, powder recovery questions and a process-specific RFQ checklist.