Our pharmaceutical, fine‑chemical and new‑energy nanomaterial R&D processes frequently adopt flammable‑explosive organic solvents such as methanol, ethanol and acetone. Conventional open‑loop spray dryers cannot handle these systems, bringing risks including solvent‑vapor explosion, sample oxidation, solvent waste and environmental pollution.
Suzhou 023 Intelligent Equipment presents the Laboratory Organic‑Solvent Spray Dryer. Specially developed for organic‑solvent systems, it adopts explosion‑proof two‑fluid atomization plus full closed‑loop inert‑gas circulation technology. It perfectly solves drying challenges for flammable‑explosive materials, serving as core closed‑loop drying equipment for lab‑scale small tests up to pilot‑scale production.
Equipment Overview
This is a safety‑oriented closed‑loop circulating dryer. Nitrogen serves as circulating protective gas to realize full‑process oxygen‑free sealed operation. It efficiently processes oxygen‑sensitive and flammable‑explosive solvent‑based materials. Key performance indicators: solvent recovery rate ≥90%, residual oxygen ≤50 ppm inside system, working temperature range 30‑250℃, standard processing capacity up to 2000 ml/h.
It is widely applied for spray‑drying powder preparation of pharmaceutical organics, fine‑chemical intermediates, lithium‑ion & solid‑battery nano‑powders and diverse polymer materials. It eliminates safety hazards from open drying while recycling organic solvents, balancing lab safety, sample quality and environmental‑friendly operation.
Core Safety Protection System
The machine adopts a three‑layer safety protection framework with multi‑interlock mechanisms for stable operation under organic‑solvent conditions.
- Oxygen Excess Protection Once internal oxygen content exceeds threshold value, the unit automatically stops heating and feeding to avoid oxidation and deflagration risks.
- Real‑time Nitrogen Monitoring
Real‑time continuous monitoring of circulating nitrogen. Abnormal nitrogen consumption triggers interlock to halt feeding and heating.
- Explosion‑Proof Pressure Protection
When system pressure exceeds safety threshold, pressure relief valve opens automatically. Feeding and heating are cut off to prevent over‑pressure hazards. The complete closed nitrogen‑circulation loop isolates materials from air all the time, fundamentally preventing sample oxidation. It maximizes solvent containment and reduces solvent emission.
Key Technical Advantages
✅ Auto‑cleaning Nozzle with Needle Actuator
Built‑in automatic needle actuator clears nozzle blockages automatically. Needle‑actuation frequency is adjustable, greatly reducing experiment interruptions.
✅ Closed Nitrogen Circulation
Closed nitrogen circulation cuts nitrogen consumption. Oxygen isolation guarantees safety and prevents powder oxidation upon air exposure.
✅ High‑precision Oxygen‑measuring Interlock Control
Real‑time oxygen monitoring intelligently starts‑stops feeding according to oxygen concentration, enhancing overall process safety.
✅ Pressure Sensing & Automatic Pressure Relief
Sensitive pressure detection triggers automatic relief under abnormal pressure, keeping chamber and pipeline pressure within safe range.
✅ Concentric Atomizing Nozzle
Concentric spray head keeps material sprayed centrally during atomization, avoiding material splashing and wall adhesion to improve material yield.
✅ Multi‑stage Pore‑type Solvent Condensation & Recovery System
Multi‑stage pore‑structure condenser greatly improves solvent condensation efficiency, achieving ≥90% solvent recovery and lowering consumable cost.
✅ Upgraded Atomization for Viscous Materials
Optimized atomization mitigates wall‑sticking of viscous materials inside cyclone separator, improving drying performance for difficult‑to‑process feedstock.
✅ Variable‑frequency Fan
Variable‑frequency fan flexibly adjusts air‑in / air‑out volume, reducing loss of ultra‑fine powder carried by airflow and improving powder collection rate.
✅ Fully Detachable for Easy Cleaning
Drying tower and vortex separator are fully disassembled with no dead corners. Easy disassembly‑cleaning‑sample‑change prevents cross‑contamination.
✅ 7‑inch Large LCD Touch Screen Terminal
Full‑stainless‑steel construction. 7‑inch large touch screen supports temperature‑curve memory and full‑process real‑time monitoring for intuitive human‑machine interaction.
✅ Mis‑operation‑proof Shutdown Logic
Press stop button: all units except fan shut down immediately to avoid heater burnout caused by mis‑operation.
✅ Optional In‑house Nitrogen Generator
Optional matching nitrogen generator reduces frequent nitrogen‑cylinder replacement and simplifies lab workflow.
✅ Superior Powder Quality
Dried finished powder shows uniform particle distribution, with over 95% powder within same particle‑size range for highly consistent spray‑dried powder.
Typical Application Scenarios
Pharmaceutical industry: drying & preparation of drug intermediates, organic APIs, heat‑sensitive pharmaceutical powders
Fine chemical industry: air‑sensitive organic chemical powders
New‑energy materials: R&D of nano‑powders for lithium‑ion, solid‑state and sodium‑ion batteries
University & institute labs: small‑scale and pilot‑scale process development for organic‑solvent systems
Equipment Specifications
| Item | Parameter |
|---|---|
| Processing Capacity | 2000 ml/h |
| Temperature Range | 30‑250℃ |
| Circulating Protective Gas | Nitrogen |
| Solvent Recovery Rate | ≥90% |
| Residual Oxygen | ≤50ppm |
Conclusion
Traditional open‑loop spray dryers cannot satisfy safety requirements for flammable‑explosive organic‑solvent systems. Featuring closed nitrogen circulation, multi‑safety interlocks, high‑efficiency solvent recovery and premium powder‑making performance, our laboratory organic‑solvent spray dryer delivers complete safe spray‑drying solutions from lab‑scale to pilot‑scale for pharmaceutical, chemical and new‑energy‑material customers.
If you are seeking safe spray‑drying equipment for organic‑solvent conditions, welcome to contact us for detailed documents, sample testing and customized solutions.