Removing 175,800 Lbs. of Monomer Contamination from Heat Transfer Fluid in a Large-Scale Resin Manufacturing Thermal Oil System
Industry: Chemical Manufacturing – Large Resin Manufacturer | Location: South Carolina | Duration: 10 Months
The Challenge
A large resin manufacturer in South Carolina experienced a critical heat exchanger failure that allowed raw monomer to leak directly into its thermal oil system. The breach contaminated the plant’s heat transfer fluid (HTF) circuit, introducing 175,800 lbs. of monomer across 10 interconnected thermal oil units. Left unaddressed, the contamination threatened to degrade heat transfer fluid efficiency, damage downstream equipment, and disrupt production at the facility.
The manufacturer needed a partner capable of separating the monomer contaminant from the heat transfer fluid, restoring the thermal oil to usable condition, and returning as much refurbished HTF as possible — all while minimizing operational disruption and avoiding the significant expense of full virgin fluid replacement and hazardous waste disposal.
Business Requirements
- Remove monomer contamination from the facility’s heat transfer fluid system across all 10 interconnected thermal oil units.
- Process and refurbish the full volume of contaminated HTF feed to recover the maximum amount of usable thermal oil.
- Capture and repurpose all separated monomer contaminant, eliminating disposal costs for the customer.
- Deliver a cost-effective heat transfer fluid refurbishment solution as an alternative to purchasing virgin replacement fluid and disposing of the degraded inventory.
Project Outcomes
CHEM Group mobilized a comprehensive heat transfer fluid recovery program spanning 10 months. The team processed 52 truckloads of contaminated HTF feed — totaling 2,304,100 lbs. of heat transfer fluid and monomer mixture — through its specialty distillation operations. The refurbishment process successfully separated the monomer from the thermal oil, restoring the heat transfer fluid to specification and returning it to the customer for reuse in their thermal oil system.
- Returned 2,007,900 lbs. of heat transfer fluid distillate back to the customer, achieving an actual volumetric yield of 87% on the recovered thermal oil.
- Captured all 175,800 lbs. of monomer contaminant during distillation and repurposed it for BTU value, eliminating any disposal burden or waste management costs for the resin manufacturer.
- Achieved a mass balance closure of 94.77%, demonstrating tight process control and full accountability throughout the heat transfer fluid refurbishment campaign.
- Delivered $857,900 in direct cost savings compared to the alternative of purchasing virgin heat transfer fluid and disposing of the contaminated thermal oil inventory through traditional waste channels.
- Produced zero disposal costs to the customer — every pound of material, both recovered HTF and separated monomer, was put to productive use.
Key Takeaway
By choosing heat transfer fluid refurbishment over full virgin replacement, the resin manufacturer recovered 87% of its contaminated thermal oil inventory, eliminated all disposal costs, and saved nearly $858,000 — proving that specialty distillation is a high-performance, sustainable alternative to costly fluid replacement and hazardous waste disposal in large-scale thermal oil systems.
