Flue Gas Denitrification - 理润科技（北京）有限公司

Application direction

Ozone, as a highly oxidative gas with exceptional disinfection and oxidation capabilities, is widely applied in municipal wastewater treatment (32%), industrial wastewater treatment (23%), flue gas denitrification (9%), paper bleaching (15%), and food processing (6%). Due to its inherent instability (with a half-life of only 20–30 minutes at room temperature), ozone must be generated on-site using dedicated ozone generators. Currently, China’s ozone generator market has reached a scale of 5.8 billion RMB, maintaining a compound annual growth rate (CAGR) above 12%, with water treatment accounting for 55% of total demand, making it the dominant application sector. In ozone generation processes, Vacuum Pressure Swing Adsorption (VPSA) oxygen generation technology has become the preferred oxygen supply solution due to its outstanding advantages:

· Lower capital investment: Compared with traditional cryogenic oxygen production, VPSA reduces equipment investment costs by 40–50%.

· Stable oxygen purity: Produces oxygen with 90–93% purity, fully meeting the feed gas requirements of ozone generators.

· High operational flexibility: Capable of flexible load adjustment within a 30–110% operating range.

· Industry-leading energy efficiency: Specific power consumption is controlled at 0.30 ± 0.03 kWh/Nm³.

With increasingly stringent environmental regulations and the ongoing implementation of China’s “Dual Carbon” strategy, ozone technology is expected to see broader applications in advanced industrial wastewater treatment and multi-pollutant flue gas control. Over the next three years, the market demand for VPSA oxygen generation equipment driven by ozone applications is projected to exceed 2 billion RMB.

Core Advantages

Outstanding Cost Efficiency – Significantly Lower Oxygen Production Costs

Unit oxygen production cost is 30–40% lower compared with cryogenic methods
Oxygen purity is maintained at a stable 90–93%, fully meeting ozone generator requirements
Feed gas utilization rate exceeds 85%, improving overall efficiency

Stable Operation – Ensuring Continuous Ozone Generation

Annual operating time ≥ 8,000 hours, with system availability ≥ 99%
Stable oxygen output pressure (fluctuation ≤ ±0.01 MPa)
Tolerant for frequent start-stop cycles, reaching full capacity within 30 minutes

Intelligent Adjustment – Seamless Matching with Ozone Production Demand

Flexible load regulation range: 30–110%, with response time < 5 minutes
Automatically adapts to fluctuations in ozone generator oxygen consumption
Supports remote monitoring and intelligent operation & maintenance

Energy-Saving & Environmentally Friendly – Reduced Overall Power Consumption

Specific oxygen power consumption: 0.32–0.38 kWh/Nm³ (industry-leading level)
Oil-free compression technology ensures high oxygen cleanliness
Modular design reduces footprint by 40%, enabling compact and efficient installation

Ozone Flue Gas Denitrification

Ozone’s strong oxidation capability enables the efficient conversion of NOx in flue gas (oxidation efficiency>90%) into higher-valence nitrogen oxides that are easily absorbed and removed in subsequent processes, achieving85–95% NOx removal efficiency. Compared with traditional SCR/SNCR technologies, ozone-based denitrification offers asimpler system design,50% smaller footprint, and eliminates ammonia slip. By integrating an oxygen recovery system, more than85% of unreacted oxygen can be recycled, reducing ozone generation costs by40%and cutting overall operating costs by30–35%. This provides a cleaner, more cost-effective flue gas control solution for industries such as steel and cement.

Ozone Pulp Bleaching

Ozone bleaching offers unique advantages in the pulp and paper industry. Its strong oxidizing power not only effectively decomposes lignin (whiteness improvement of15–20 ISO points), but also avoids the generation of toxic chlorinated organic compounds (e.g., AOX) associated with traditional chlorine-based processes. Compared with conventional bleaching, ozone bleaching can reduce chemical consumption byover 50%and significantly lower wastewater COD load by40–60%. With an integrated oxygen recovery system, more than85% of unreacted oxygen can be recycled, reducing oxygen consumption costs by30–40%while enabling surplus oxygen to be reused in other production processes. This ensures acleaner, resource-efficient, and sustainable pulp bleaching process.

Ozone Water Treatment

Leveraging its strong oxidation property, ozone water treatment demonstrates outstanding disinfection performance in potable water applications—up to 300 times more effective than chlorine disinfection, while completely avoiding harmful disinfection by-products. In wastewater treatment, ozone efficiently degrades refractory organics (COD removal rate30–50%), significantly improving effluent quality. With the integration of energy-saving ozone systems, more than85% of oxygen can be recycled. The recovered oxygen can be reused in ozone generators or supplied to aeration tanks, boosting dissolved oxygen levels by20–30%. This dual benefit reduces overall water treatment costs by25–35%, while cutting oxygen consumption by40%, delivering a highly efficient and energy-saving water treatment solution.

Ozone Generation