5000L Industrial Polyurethane Resin Reactor | Stainless Steel Chemical Mixing Vessel

This 5000-liter reactor is built for polyurethane resin production, where batch consistency and heat transfer control are non-negotiable. We design these vessels around the actual process conditions—not just a standard tank with a jacket bolted on. The unit is engineered to handle the exothermic nature of polyurethane reactions, where temperature drift can ruin an entire batch.

The vessel is fabricated from 304 or 316L stainless steel, depending on the corrosiveness of your raw materials. For polyurethane systems involving aromatic isocyanates, we typically recommend 316L for the wetted parts. Internal surfaces are mirror-polished to Ra ≤ 0.4 µm, which minimizes product buildup and makes cleaning between batches straightforward. Welds are full-penetration and ground smooth to meet sanitary standards.

Heating and cooling are managed through a split jacket design, allowing you to switch between steam heating and chilled water cooling without thermal shock to the vessel. The jacket is rated for your specified working pressure, and we size the heat transfer area based on your reaction kinetics—not guesswork. A PTFE-coated thermowell ensures accurate temperature sensing even with viscous media.

The agitation system uses a variable-speed motor with a choice of anchor, helical ribbon, or turbine impellers. For high-viscosity polyurethane resins, an anchor scraper with PTFE wipers is often the right call—it keeps the heat transfer surface clean and promotes uniform mixing. The mechanical seal is double-acting with a seal pot, suitable for vacuum or pressure operation.

Standard configurations include a top-mounted manhole, sight glass with LED lighting, and nozzles for raw material feeding and vacuum. Optional additions include a reflux condenser, bottom discharge valve with flush port, and a control panel with PLC interface for recipe management.

Technical Specifications

Selecting the Right Reactor

Before requesting a quote, define your process parameters clearly. What is the exact chemical composition of your raw materials? What is the batch size and working volume? What are the maximum and minimum temperatures during the reaction? Is the process under vacuum, pressure, or atmospheric conditions? What is the viscosity range of the final product? These details allow our engineers to specify the correct wall thickness, jacket type, agitator design, and seal configuration.

Frequently Asked Questions

Can this reactor handle solvent-based polyurethane systems? Yes, provided the solvent does not attack the seal material. We can specify Viton or PTFE seals accordingly.

How do I clean the vessel between color changes? The mirror-polished surface and flush-bottom valve allow for efficient CIP (clean-in-place) cycles using hot solvent or caustic solution.

What is the lead time? Standard vessels ship in 30-45 days. Custom configurations with special alloys may take longer.

Do you provide installation support? We provide detailed drawings and can arrange on-site supervision if needed.

Tell us your process conditions—materials, batch volume, operating temperature, pressure, and mixing requirements—and we will recommend a configuration that fits your production line. Request a quote with your specifications to get started.