Vacuum cooling crystallization
Adiabatic cooling duties where controlled supersaturation and classified growth are required.
Draft-Tube-Baffle Crystallization
Draft Tube Baffle (DTB) Crystallizer
Draft-tube-baffle crystallization with internal circulation, settling classification and a wash leg for controlled crystal residence. Designed and manufactured for vacuum cooling crystallization and evaporative crystallization. Review the working principle, performance features and available configuration details below when specifying your industrial project.
- Supports vacuum cooling, evaporative, direct-contact cooling and reactive crystallization routes.
- Draft tube and cylindrical baffle support stable crystal circulation and growth.
- Settling and hydraulic classification help produce larger, more uniform crystals.
- Process
- Draft-tube-baffle
- Circulation
- Internal circulation
- Output
- Classified crystals
- Operation
- Continuous / project-specific
Product Essentials
Everything needed for a quick technical review.
Select a topic from the directory. The content stays in one focused workspace for faster comparison.
Typical Technical Data
Technical specifications
Listed values apply to the identified configuration. Confirm material conditions, utilities and optional equipment before selection.
| Parameter | Reference value |
|---|---|
| Process route | Draft-tube-baffle crystallization |
| Circulation | Internal circulation through the draft tube |
| Classification | Settling zone with wash leg and hydraulic classification |
| Product | Classified crystal product |
| Control factors | Supersaturation, temperature uniformity, agitator speed and cooling area |
| Final design | Capacity, dimensions and utilities require feed data and engineering confirmation |
Final equipment dimensions, utilities and performance must be confirmed before quotation.
Applications
Crystallization routes suited to this equipment family.
Applications include vacuum cooling crystallization and evaporative crystallization. Confirm material properties and process conditions before selecting the equipment configuration.
Evaporative crystallization
Evaporation-driven concentration and crystal growth after process review.
Direct-contact or reactive routes
Selected direct-cooling and reactive crystallization applications after material evaluation.
Working Principle
From conditioned solution to classified crystals.
The sequence summarizes the documented process route.
Feed & circulation
Saturated feed mixes with circulating mother liquor and fine crystals.
Heating & supersaturation
The circulating liquor is heated and returned through the lower draft-tube zone.
Crystal growth
Upward circulation and controlled supersaturation support deposition on suspended particles.
Classification & discharge
Large crystals settle and enter the wash leg while fines return to circulation.
Performance Highlights
Crystal growth and classification in one engineered system.
Final performance remains dependent on solution properties and operating conditions.
Integrated circulation
Stable internal flow supports controlled heat transfer and crystal residence.
Crystal classification
Settling and hydraulic classification help narrow product size distribution.
Reduced scaling
The DTB configuration helps limit deposition inside the crystallizer.
Process flexibility
Multiple cooling, evaporation and reactive routes can be engineered.
System Configuration
Standard process path with project-specific options.
Final equipment scope is confirmed after process review.
Standard process components
- Feed and mother-liquor circulation
- Draft tube and cylindrical baffle
- Heater or cooling interface
- Settling zone and wash leg
- Crystal discharge and controls
Project-specific options
- Vacuum flash arrangement
- External heat exchanger
- Alternative cooling route
- Automated density and temperature control
- Downstream solid-liquid separation
Selection Support
What we need to size the crystallization system.
Send the following information for an efficient preliminary review.
Solution composition and concentrationRequired capacity and operating hoursSolubility curve and temperature rangeTarget crystal size and distributionViscosity, density and impurity dataAvailable heating and cooling utilitiesRequired construction materialSite, control and downstream requirements
