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Help CenterFor Pharmaceutical Crystallization: DTB Crystallizer With 316L Stainless Steel and Sanitary Design
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer established in 1998 with over two decades of experience in metal fabrication and precision equipment. We are proud to present our DTB Crystallizer crafted from 316L stainless steel, designed specifically for pharmaceutical crystallization processes. This equipment combines superior corrosion resistance, strict sanitary standards, and excellent heat transfer performance to ensure consistent, high-purity crystal production. With an annual export value of US$5–10 million and global reach to markets across North America, Europe, Asia, and beyond, we are your reliable partner in process equipment.
Our DTB crystallizer adopts a draft tube baffle (DTB) configuration that promotes uniform mixing, controlled supersaturation, and efficient crystal growth. The 316L stainless steel construction provides exceptional resistance to aggressive pharmaceutical solvents and cleaning agents, while the sanitary design (including electropolished surfaces, zero dead-leg fittings, and CIP/SIP compatibility) meets the highest hygiene requirements for API and intermediate crystallization. Below we detail the key features, specifications, and benefits to help you evaluate this solution for your production line.
Key Features & Technical Specifications
- Material: Full 316L stainless steel (1.4404) with material certificates traceable to mill.
- Surface Finish: Internal surfaces mirror polished to Ra ≤ 0.4μm, external surfaces brushed or mirror optional.
- Sanitary Design: All welds ground flush, no crevices, tri-clamp connections for easy disassembly and cleaning.
- Draft Tube Baffle System: Optimized impeller and draft tube design ensures uniform suspension of crystals, minimizes attrition, and improves yield.
- Heating/Cooling Jacket: Half-pipe coil or dimple jacket available for precise temperature control; customizable for different thermal fluids.
- Sealing: Mechanical seal with sanitary-grade elastomers (EPDM, Viton, or PTFE); optional double mechanical seal with barrier fluid.
- Instrumentation: Ready for temperature, pressure, and level sensors; optional sight glass, light, and spray ball for CIP.
- Compliance: Designed to meet cGMP, FDA, and ASME BPE guidelines (certificates available upon request).
| Parameter | Standard Range | Notes |
|---|---|---|
| Working Volume | 50 L – 5000 L | Custom sizes available |
| Design Pressure | -0.1 MPa to 0.6 MPa | Full vacuum rated |
| Design Temperature | 0°C to 150°C | Higher temperature on request |
| Agitator Speed | Variable 0–200 RPM | Frequency drive controlled |
| Heat Transfer Area | Custom per volume | Optimized for crystallization |
| Connection Standards | Tri-Clamp (ISO 2852), Flange (DIN/ANSI) | Customizable |
Advantages for Pharmaceutical Crystallization
- Improved Crystal Quality: The DTB design suppresses secondary nucleation and promotes uniform crystal size distribution, leading to better filtration and downstream processing.
- High Yield & Efficiency: Excellent mixing and suspension minimize agglomeration, reduce batch time, and increase overall yield.
- Sanitary Compliance: All wetted parts are 316L stainless steel with electropolished surfaces, eliminating product hold-up and bacterial growth. Suitable for CIP (Clean-in-Place) and SIP (Sterilize-in-Place).
- Corrosion Resistance: 316L steel resists pitting and crevice corrosion from halides and acidic streams commonly encountered in pharmaceutical processes.
- Flexibility: Modular design allows integration with existing process lines; easy to add accessories like condensers, receivers, and sampling ports.
- Low Maintenance: Robust construction and sanitary seals reduce downtime; all gaskets are replaceable without special tools.
Frequently Asked Questions (FAQ)
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Q: What is the typical lead time for a DTB crystallizer?
A: Depending on the size and customization, standard lead time is 8–12 weeks. Rush orders are possible with additional charges. We communicate a clear schedule before production. -
Q: Can you provide material certificates and weld reports?
A: Yes, we supply full material traceability certificates (MTR) from the mill, as well as weld records and pressure test reports as part of the documentation package. -
Q: Is the crystallizer suitable for heat-sensitive compounds?
A: Yes, the efficient jacket design and precise temperature control (via PID or PLC) allow gentle heating/cooling to avoid degradation. Variable speed agitation also reduces shear. -
Q: Do you offer installation and commissioning support?
A: We provide remote technical guidance and can arrange on-site assistance upon request. Our team also offers FAT (Factory Acceptance Test) before shipment. -
Q: What cleaning validation documentation do you provide?
A: We can supply a complete IQ/OQ (Installation Qualification/Operational Qualification) package, including surface roughness measurements, material certificates, and cleaning validation protocol templates. -
Q: Can the design be modified to include a bottom drain valve?
A: Absolutely. We can add a sanitary diaphragm valve or ball valve for full drainability. The bottom geometry is sloped to ensure complete product recovery. -
Q: How does the DTB crystallizer compare to a stirred tank crystallizer?
A: The DTB design provides better internal circulation and temperature uniformity, resulting in more consistent supersaturation and narrower crystal size distribution. It is particularly advantageous for fine chemical and pharmaceutical applications where purity and reproducibility are critical. -
Q: What are the shipping options?
A: We ship from Tianjin, Qingdao, or Shanghai ports. We can arrange FOB, CIF, or DDP terms depending on your preference. The crystallizer is carefully packed in a wooden crate with foam support.
Why Choose Anping County Boli Hardware Wiremesh Products Factory?
Since 1998, we have been dedicated to manufacturing high-quality stainless steel equipment for industries ranging from chemical to pharmaceutical. Our factory in Hengshui, Hebei, China, is equipped with advanced CNC machining, automatic welding, and polishing lines. With an annual export value of US$5–10 million, we have shipped thousands of vessels to clients in North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our skilled team of engineers and technicians ensures each crystallizer meets stringent quality standards. We offer customizable solutions at competitive prices, with responsive after-sales support. Contact us today to discuss your specific crystallization requirements – we will provide a detailed proposal and prompt quotation.
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