Sankang 40KG/h ozone generator used for flue gas denitrification

## Ozone Denitrification: Overcoming the Limitations of Traditional Processes

In traditional flue gas denitrification technologies, selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) dominate the mainstream. SCR technology requires the use of catalysts at high temperatures of 300-400°C, achieving a denitrification efficiency of up to 90%, but the catalysts are costly and prone to poisoning. SNCR technology does not require catalysts, but urea or ammonia water must be injected at high temperatures of 850-1100°C, achieving only 50%-60% denitrification efficiency and facing ammonia slip issues. The strict temperature requirements of these two technologies make it difficult to apply them directly to low-temperature flue gas scenarios, such as steel sintering machines and glass furnaces.

The ozone advanced oxidation method oxidizes poorly water-soluble NO into highly oxidized nitrogen oxides like NO₂ and N₂O₅, which are easily soluble in water, and are then absorbed by alkaline solutions in scrubbers to achieve synergistic denitrification and desulfurization. This technology does not require catalysts and is suitable for a wide temperature range (20-200°C), especially suitable for low-temperature flue gas treatment. The Sankang 40KG/h ozone generator is based on this principle and achieves efficient conversion and removal of NOx through precise control of ozone dosing.

## Technical Breakthrough: Core Advantages of the Sankang 40KG/h Ozone Generator

The Sankang 40KG/h ozone generator features a modular plate design, integrating high-frequency high-voltage power supply, dual-gap dielectric barrier discharge technology, and an intelligent control system, with the following technical highlights:

1. High Efficiency and Stability: Ozone concentration can reach 120-150 mg/L, energy consumption is below 8 kWh/kg O₃, and operational stability exceeds 98%. In a capacity upgrade project at a steel plant sintering machine in Hebei, three units ran continuously for six months without shutdowns, with outlet NOx concentration consistently below 50 mg/m³, meeting ultra-low emission requirements.

2. Flexible adaptation: The equipment supports dynamic adjustment of parameters such as frequency, power, and ozone concentration, and can match different flue gas volumes (100,000-500,000 Nm³/h) and NOx concentrations (50-300mg/Nm³) working conditions. For example, in the renovation of the Hangzhou Zhongce Qingquan carbon black boiler, the equipment worked in tandem with the wet desulphurizer to reduce NOx emissions from 800mg/Nm³ to 10mg/Nm³ while achieving deep SO₂ removal.

3. Economic and environmental protection: Compared with the traditional SCR process, the investment cost of Sankang solution is reduced by 40%, and the operating cost is reduced by 30%. Ozone oxidation products can react with desulfurization by-products (such as CaSO₃) to form calcium nitrate, calcium nitrite and other resource products to avoid secondary pollution. The application case of Baosteel Meigang 180m² sintering machine shows that this technology makes the denitrification efficiency reach more than 60%, the desulfurization efficiency is increased to 70%, and there is no waste liquid discharge.

## Application Scenarios: Multi-industry coverage solutions

Sankang 40KG/h ozone generator has been successfully used in many fields:

Steel industry: HBIS Tangsteel 265m² sintering machine adopts dense coherent tower combined with ozone oxidation process, through the self-developed flue ozone distributor, the mixing uniformity of ozone and flue gas is increased by 30%, and the export NOx concentration is reduced from 250mg/m³ to less than 100mg/m³.

Power industry: A coal-fired power plant adopts the ozone calcium oxidation desulfurization combination process to achieve a NOx emission concentration of less than 30mg/m³ without affecting the boiler efficiency, and at the same time remove 99% of mercury and 94% of dioxins from the flue gas.

Chemical industry: In the transformation of catalytic cracking unit of a petrochemical enterprise, the equipment was combined with the SNCR process to reduce the ammonia escape from 8mg/Nm³ to less than 2mg/Nm³, meeting the requirements of the "Petroleum Refining Industry Pollutant Emission Standard".

## Industry benchmark: Sankang's technology precipitation and service system

As the drafting unit of the industry standard for "Ozone Generator for Water Treatment", Sankang Environmental Protection has 18 years of experience in ozone technology research and development, and its products have passed the ISO9001 quality management system certification and EU CE certification. The company provides customers with "turnkey engineering" services, including preliminary working condition diagnosis, customized scheme design, equipment installation and commissioning, and post-operation and maintenance training. In a glass kiln project in Shandong, the Sankang team optimized the ozone injection point through flow field simulation, increasing the denitrification efficiency from 75% to 92%, which was highly recognized by customers.

## Future Outlook: The Green Potential of Ozone Technology

With the advancement of the "dual carbon" goals, ozone-based denitrification technology is expected to play a greater role in industrial flue gas treatment. Sanko Environmental is developing a new generation of low-temperature plasma-ozone synergistic denitrification system, which, through the combined action of high-energy electron beams and ozone, further reduces the reaction temperature (<150°C) and enhances denitrification efficiency (>95%). At the same time, the company is exploring the resource utilization of ozone by-products in fields such as agricultural fertilizers and building materials, promoting the transformation of environmental protection technologies toward a circular economy model.

Sanko's 40KG/h ozone generator, with its high efficiency, flexibility, and cost-effectiveness, provides an innovative solution for industrial flue gas denitrification. Driven by stricter environmental policies and industrial upgrades, this technology is expected to become a key option for more companies seeking to achieve green transformation.