Precision Quincy’s Advanced Control Oven Enhances Fiberglass Roll Processing

Precision Quincy engineered a high-performance industrial oven specifically designed for heat cleaning fiberglass rolls, delivering precision and safety at extreme temperatures.

This custom Class A oven operates at 1000°F, ensuring uniform heat distribution while handling volatile organic compounds (VOCs) generated during the process.

With advanced airflow systems, durable insulation, and a robust control interface, this oven enhances efficiency and safety for the customer.

By meeting NFPA 86 safety standards, Precision Quincy once again showcases its ability to deliver custom solutions that optimize productivity in complex industrial environments.

OVERVIEW

Tailored to facilitate heat cleaning of fiberglass rolls efficiently and safely

Precision Quincy (PQ) designed, engineered, and manufactured a custom industrial oven for a customer specializing in the production of fiberglass materials.

The oven was tailored to facilitate the heat cleaning of fiberglass rolls, ensuring efficient processing while complying with stringent safety standards. This high-temperature Class A oven was built to handle volatile organic compounds (VOCs) during the heat-cleaning process.

Requirements

The customer required a heavy-duty industrial oven capable of handling high temperatures and large volumes of fiberglass rolls.

The oven had to provide consistent temperature control across a wide temperature range while ensuring uniform heat distribution.

Additionally, the system needed to meet NFPA 86 Class A safety standards due to the handling of VOCs, which are generated during the cleaning process.

Key Specifications

Oven Type: Class A oven designed for VOC processing.
Process: Heat cleaning of fiberglass rolls.
Operating Temperature: 1,000°F (538°C).
Temperature Uniformity: ±15°F (±8.3°C).
Oven Dimensions:
- Interior: 120″ W x 208″ L x 84″ H.
- Exterior: 190″ W x 244″ L x 205″ H.
Oven Capacity:
- Batch weight: 18,000 lbs of fiberglass rolls.
- Total volume: 1,213 cubic feet.
VOC Loading: 0.30 gallons per batch of standard solvent.

Design Features

Heat Zone and Airflow System

The oven was designed with a full-height horizontal-vertical airflow system to ensure uniform distribution of heated air across the work area. This was crucial for consistent heat transfer to the fiberglass rolls, which would be processed at 1,000°F.
The supply fan, rated at 51,000 CFM, ensured high-volume air recirculation, while the exhaust fan, rated at 2,100 CFM, efficiently removed VOCs and maintained a safe work environment.

Insulation and Construction

The oven was constructed with 8-inch thick walls, insulated with 6# mineral wool for the exterior walls and 8# ceramic fiber for the interior walls. This design minimized heat transfer to the outer skin of the oven and maintained energy efficiency.
The oven floor was insulated and equipped with cart guide tracks to facilitate the movement of large fiberglass rolls during processing.
The oven’s interior walls were made of 304 stainless steel, while the exterior walls were constructed from 16-gauge 304 stainless steel for durability and heat resistance.

Doors and Access

A pneumatically powered vertical lift door was installed on one end of the oven. The door, reinforced with a 3/16″ steel shell, was equipped with a manual safety latch and a pneumatic operation system, ensuring ease of use and safety during loading and unloading.
The door’s construction included high-quality gaskets to prevent heat loss and ensure consistent temperature control within the oven chamber.

Heating and Exhaust System

The oven utilized a 3,150,000 BTU/hr gas burner system with an excess air burner design. The burner was equipped with direct spark ignition and flame safeguards to ensure safe operation at high temperatures.
A gravity exhaust port with an adjustable damper was included to efficiently remove VOCs from the oven chamber, ensuring compliance with NFPA 86 safety standards.

Control System

The oven was controlled using an Allen-Bradley-based PLC system with a Watlow F4T ramp/soak temperature controller, providing precise control over temperature profiles and data acquisition. The system allowed programming of up to 40 ramp/soak profiles, ensuring flexibility and accuracy in the customer’s heat-cleaning process.
Safety features included Type K thermocouples, airflow switches, and a Karl Dungs flame safety system, all of which ensured safe operation of the oven under various conditions.

Safety & Compliance

NFPA 86 Class A Standards

The oven adhered to NFPA 86 Class A safety standards, specifically designed for processes involving VOCs. Multiple safety features were built into the system, including:

Excess air burner design for efficient combustion of gasses.
Flame safeguard system with UV scanners and purge timers.
Over-temperature protection for both the heat chamber and work area, ensuring safe operation even at high temperatures.

Pre-Manufacturing Testing

Precision Quincy conducted pre-assembly and pre-testing at their facility to ensure the oven met customer’s specifications. The testing phase included:

Multi-point Uniformity Testing: The supply air discharge louvers were adjusted to ensure even heat distribution across the work area.
Quality Inspection: The oven underwent a thorough inspection, including checks for proper fit and finish, electrical connections, and paint quality.

Delivery and Installation

The oven was shipped to the customer’s facility, fully assembled and tested. Precision Quincy provided detailed assembly prints, wiring schematics, and operational manuals.

The customer was responsible for connecting utilities, including natural gas and electrical services, and ensuring compliance with local fire protection and safety codes.

Conclusion

Precision Quincy delivered a custom industrial oven designed to meet the customer’s specific requirements for heat cleaning fiberglass rolls.

The oven’s robust construction, advanced control system, and compliance with NFPA 86 Class A standards ensured safe and efficient processing of high-temperature materials.

By collaborating with the customer, Precision Quincy provided a solution that enhanced both the safety and productivity of their manufacturing operations.

This project demonstrates Precision Quincy’s expertise in delivering tailored solutions for complex industrial applications, providing high-performance ovens that meet demanding production and safety requirements.