5000L-30000L Stainless Steel External Coil Reactor Tank CE Certified Chemical Reactor Pressure Vessel for Chemical Industry

External Coil Reactor for Chemical Processing

We build external coil reactors for operations where temperature control matters more than brute force agitation. This vessel series from 5,000 to 30,000 liters suits batch chemical processing, polymer production, and specialty synthesis where reliable heat transfer and clean welds make the difference between consistent yield and scrap batches.

The external half-pipe coil design keeps the interior smooth. No internal baffles or heating tubes to trap residues. For processes involving viscous media, suspended solids, or products that polymerize on hot surfaces, this geometry reduces cleaning cycles and minimizes contamination between batches.

Materials and Fabrication

Standard construction uses 304 or 316L stainless steel for wetted parts. For chloride-containing processes or pharmaceutical applications, we recommend 316L with low carbon content to preserve corrosion resistance after welding. Shell thickness follows ASME or CE/PED calculations based on your working pressure and vessel diameter. Internal surface finishes range from 2B mill finish to 0.4 µm Ra electropolished, depending on your hygiene or product release requirements.

Welds are fully penetrated and ground flush where the product contacts them. The external coil is welded in segments and pressure-tested before shipment. No short cuts on weld inspection—we dye-penetrant test the coil attachments and hydrostatically test the completed vessel.

Heating, Cooling, and Agitation

The external coil handles steam heating, thermal oil, or chilled water/glycol circuits. You specify the heat transfer medium and target ramp rates, and we size the coil coverage accordingly. For processes requiring rapid cooling after exothermic reaction, we can add a separate internal coil or dimple jacket—talk to us about your specific duty cycle.

Agitation options include anchor, paddle, turbine, or combination impellers with bottom or top entry drives. Shaft seals range from packed glands for simple duties to double mechanical seals with flushing plans for volatile or toxic media. Variable frequency drives allow speed adjustment to match changing viscosity during the reaction.

Technical Specifications

Application Notes

These reactors see regular use in resin and adhesive manufacturing where exothermic control determines final molecular weight. They also handle dye intermediate synthesis, surfactant production, and specialty oil blending. Food-grade installations use electropolished surfaces and FDA-compliant gaskets. Cosmetic emulsion plants appreciate the smooth interior for quick turnover between fragrance batches.

Buyer\’s Checklist

Before requesting a quote, define the following: the chemical composition and concentration of your process stream, required batch and working volume, operating and design temperatures, pressure or vacuum conditions, viscosity range and solids content, whether you need heating, cooling, or both, the mixing intensity required, and any cleaning or certification standards. With these details, we can specify the correct wall thickness, coil size, agitator type, and seal arrangement.

Request a Quote

Send us your process parameters—materials handled, batch size, temperature and pressure requirements, and agitation needs. Our engineers will respond with a configuration recommendation and pricing. We welcome drawings and P&IDs for custom integration.