Unsaturated Resin Reactor Steam Heating Mixing Tank

Steam-Heated Unsaturated Resin Reactor with Integrated Mixing

This reactor is built for resin plants that need consistent heat transfer and reliable agitation during polymerization and blending. We fabricate the vessel from 304 or 316L stainless steel, depending on your resin formulation and the presence of chlorides or other corrosive agents. For unsaturated polyester resin production, 316L is often the safer call, especially when washing with solvents between batches.

The steam heating jacket is designed for even temperature distribution across the vessel wall. We use a dimple jacket or half-pipe coil configuration based on your operating pressure and heating surface requirements. This matters more than you might think. A poorly designed jacket creates hot spots that can cause premature gelation or inconsistent viscosity from batch to batch.

Our standard build includes a variable-speed anchor or paddle agitator with a PTFE or mechanical seal. If your process requires vacuum operation, we can fit a double mechanical seal with a seal pot. For emulsification or high-shear mixing, we can add a high-speed disperser as an auxiliary impeller. The tank interior is polished to a 0.4–0.8 μm Ra finish, which keeps cleaning time down and reduces product adhesion on the wall.

We also offer a cooling coil or external heat exchanger for processes that need rapid cooling after the reaction peaks. Temperature control is handled via a PID loop with a thermocouple or RTD sensor, and we can integrate the reactor with your existing DCS or PLC system.

Typical Applications

• Unsaturated polyester resin synthesis
• Alkyd resin cooking
• Adhesive and sealant blending
• Emulsion polymerization
• Pharmaceutical intermediate reactions

Technical Specifications

Buyer\’s Checklist

Before requesting a quote, write down the following: the exact chemical composition of your raw materials, the batch size you need, the maximum and minimum operating temperatures, whether the process runs at atmospheric pressure or under vacuum, and how viscous the final product will be. Also note how you plan to clean the tank between batches and whether your plant has a steam supply at sufficient pressure and flow rate.

This information lets our engineers determine the correct wall thickness, jacket area, agitator torque, and seal specification. A reactor is not a one-size-fits-all piece of equipment. Getting these details right up front saves you from costly modifications later.

FAQ

Q: Can this reactor handle high-viscosity resin?
Yes, but we need to size the motor and gearbox accordingly. High-viscosity mixing requires higher torque at lower speeds. Tell us your viscosity range and we will select the appropriate drive.

Q: What if my process requires vacuum?
We can design the vessel for full vacuum operation and use a mechanical seal to maintain the seal integrity under negative pressure.

Q: How long does fabrication take?
Typical lead time is 30–45 days after drawing approval, depending on capacity and customization level.

Send us your material safety data sheet, batch volume, operating temperature, pressure, and mixing requirements. We will get back to you with a configuration recommendation and a quotation.