Extending the Service Life of Flue Gas Desulfurization Towers: Energy-Saving and Efficiency-Enhancing Solutions

As critical equipment for controlling sulfur dioxide emissions, the operational stability and service life of desulfurization towers directly impact corporate environmental compliance and economic benefits. Traditional desulfurization towers face severe corrosion issues, including chemical, electrochemical, and erosion corrosion, leading to frequent maintenance, shortened lifespan, and unplanned shutdowns. Baoji Lihua Nonferrous Metals Co., Ltd. established in 2006, has been deeply engaged in the titanium flange field for 20 years. Leveraging years of technical accumulation and process innovation, along with strict quality control, the company provides revolutionary material solutions to extend the life and ensure stable operation of desulfurization towers, helping enterprises achieve both energy efficiency, cost savings, and green production.

In the wet desulfurization process, contact between flue gas and slurry creates an acidic environment with a pH as low as 2–5. Chlorides from coal concentrate within the system, forming a highly corrosive chloride-rich environment. Continuous erosion from slurry and flue gas accelerates surface damage. Temperature fluctuations between operation and shutdown further accelerate material fatigue and corrosion.

Stainless steel is prone to pitting, crevice corrosion, and stress corrosion cracking in high-chloride environments. The linings of carbon steel with rubber or plastic are easily damaged and age quickly, requiring heavy maintenance and offering short service lives. High-alloy materials are costly and economically impractical for large-scale use.

In oxidizing acidic media, titanium forms a dense, stable, and highly adherent passive film (mainly TiO₂). Even if locally damaged, this film quickly self-repairs in the presence of air or moisture, providing excellent corrosion protection. Titanium remains stable in strong acids (pH ≤ 2) and high-chloride environments. It also offers high surface hardness to resist slurry erosion, with a density only 60% that of steel but comparable strength. Although the initial investment is higher, the total lifecycle cost is significantly lower.

Traditional flanges in desulfurization towers typically last 3–5 years. Titanium flanges under the same conditions can achieve a design life of over 15 years, reducing replacement frequency by more than 70%.

Unplanned downtime due to corrosion leakage is greatly reduced. Maintenance workload decreases by over 60%, and annual comprehensive maintenance costs are cut by 40–50%.

Sealing reliability is enhanced, reducing the risk of flue gas leakage. System operational stability is significantly improved, supporting continuous, stable, and efficient production.

Reduces solid waste generated from equipment repair and replacement, lowers resource consumption during production, and helps enterprises achieve green and sustainable development goals.

• Material optimization: use of TA2/TA10 and other industrial pure titanium and titanium alloys tailored to specific corrosive environments
• Manufacturing processes: precision forging and machining to ensure dimensional accuracy and quality
• Quality control: full material traceability from raw material to finished product, complying with ASME, GB, and other standards

• Technical consultation: analysis and material selection recommendations
• Solution design: customized flange design solutions for special requirements
• Product supply: high-quality titanium flanges and matching fasteners
• After-sales support: product documentation and detailed after-sales service

Choosing Lihua Titanium means not just selecting a product, but a partner. With professional technology and quality service, we ensure the stable operation of your desulfurization system and improve production efficiency. Let professional materials solve professional problems — Lihua Titanium works with you to create a green industrial future.

As a regulated industrial enterprise above designated size and a "Specialized and Sophisticated" SME in Shaanxi Province, Lihua Titanium has focused on titanium flanges for 20 years, helping over 56,000 enterprises solve industrial corrosion problems. For more information, please follow our WeChat public account "Lihua Titanium" and leave your company name and contact details to receive professional corrosion solutions.