Figure 1: Field-erected FGD absorber at a carbon black production facility.

1. Project Background

This case study reviews an environmental upgrade for a major carbon black producer in the Qipanjing Industrial Park, Inner Mongolia. The project involved the retrofit and hardware supply for a wet flue gas desulfurization (FGD) system treating high-volume exhaust from production lines.

The centerpiece is a massive absorption tower with an internal diameter of approximately 15.⁸ meters, utilizing a bottom-inlet configuration.

2. Technical Challenges

3. FXSINO Scope: Complete Internal Hardware Package

For this project, FXSINO acted as the turnkey supplier for all internal static hardware. Our scope covered:

• Gas Inlet Deflector & Flow Baffles: Custom-engineered turning vanes at the base to ensure uniform gas distribution and protect the tower walls.
• Spray Header Support Beams: Heavy-duty structural steelwork designed to support the weight and thrust of the large-diameter slurry pipes.
• Nozzle Supply & Configuration: Providing high-efficiency nozzles optimized for the specific liquid-to-gas ratio.
• Demister Modules & Carrier Beams: Supply of multi-stage mist eliminators and the underlying support grid system.
• Internal Platforms & Ladders: Access platforms within the tower for maintenance of nozzles and demisters.

4. On-Site Execution & Verification

During the installation phase, FXSINO technical personnel were present to oversee critical alignment stages. Key verification points included:

• Levelness and plumbness of the spray header support beams.
• Alignment of the gas inlet deflector relative to the tower centerline.
• Elevation accuracy of the demister support beams to ensure proper sealing.

5. Conclusion

This project demonstrates the capability to engineer and supply complete internal hardware packages for mega-scale FGD absorbers. By focusing on structural integrity and precise gas-liquid contact dynamics, FXSINO provided a reliable solution tailored to the demanding environment of the carbon black industry.