Large-Capacity Ozone Generation for Industrial Flue Gas Treatment
At Pucheng Clean Energy in China, Longking supplied two oxygen-fed NLO-130K industrial ozone generators, each rated at 130 kg O₃/h, providing a total installed ozone production capacity of 260 kg O₃/h.
The ozone generation system was integrated into a boiler flue-gas desulfurization and denitrification process, demonstrating the application of large-capacity ozone technology in demanding industrial emissions-control systems.
This project is part of Longking’s broader experience in industrial flue-gas treatment, where ozone can be used as an oxidation step within engineered DeNOx/DeSOx treatment trains.
Project Scope
The Pucheng project required a large-capacity ozone generation system for integration into an industrial boiler flue-gas treatment process.
Key Project Data
Application: Boiler flue-gas desulfurization and denitrification
Ozone generators: 2 units
Ozone production per unit: 130 kg O₃/h
Total installed ozone capacity: 260 kg O₃/h
Feed gas: Oxygen
Location: China
The installation illustrates Longking’s capability to supply high-capacity ozone generation equipment for demanding industrial gas-treatment applications, where ozone production, gas-feed conditions and process integration must be coordinated with the overall emissions-control system.
Why Ozone Is Used in Flue Gas Treatment
In industrial flue-gas treatment, ozone can be used as a powerful oxidation agent for nitrogen oxides (NOx).
A significant fraction of NOx in combustion gases can be present as nitric oxide (NO), which has relatively low solubility in water and can be difficult to remove efficiently through conventional wet absorption alone.
Ozone can oxidize NO into higher oxidation-state nitrogen oxides, improving their subsequent removal within an appropriately designed downstream treatment process.
Ozone as a DeNOx Oxidation Stage
The ozone system is therefore used primarily as an upstream oxidation stage within the complete flue-gas treatment train.
The final performance depends on several process parameters, including:
Flue-gas flow
Inlet NOx concentration and composition
Required oxidation level
Ozone dose
Gas temperature
Ozone injection and mixing
Residence time
Downstream absorption or scrubbing process
The ozone requirement must therefore be defined according to the actual flue-gas conditions and the overall emissions-control process.
Integration with DeSOx / Wet Scrubbing
In combined flue-gas treatment systems, ozone-based NOx oxidation can be integrated with desulfurization and wet-scrubbing processes.
The ozone stage should not be considered an isolated treatment step. Its function is coordinated with the downstream process so that the oxidized nitrogen species can be effectively captured and removed.
For this reason, projects such as Pucheng require not only high ozone production capacity, but also careful integration of ozone generation, gas injection, mixing and the downstream emissions-control system.
Why High-Capacity Ozone Generation Matters
Large industrial flue-gas streams can require substantial ozone production.
The Pucheng installation, with 260 kg O₃/h of total installed capacity, demonstrates the scale that ozone-generation systems can reach when applied to major industrial emissions-control projects.
Large-Capacity Ozone System Engineering
A 260 kg O₃/h installation is not simply a larger version of a small ozone generator.
At this scale, the ozone-generation equipment must be engineered together with the feed-gas supply, cooling requirements, electrical infrastructure, gas distribution, instrumentation, control system and interfaces with the downstream process.
Modular Ozone Generation
The Pucheng installation uses two 130 kg O₃/h ozone generators, providing a total installed production capacity of 260 kg O₃/h with oxygen feed.
Using multiple ozone-generation units allows the plant architecture to be developed according to the required capacity, operating range and availability philosophy.
Feed-Gas Integration
For an oxygen-fed ozone system, the available oxygen flow, purity, pressure and operating conditions must be coordinated with the required ozone production and concentration.
The feed-gas system and ozone generators therefore form part of the same process design rather than being selected independently.
Thermal Management
Ozone generation creates a significant thermal load.
Large-capacity systems require an appropriately engineered cooling arrangement based on the generator duty, cooling-water conditions, ambient conditions and available plant utilities.
The final cooling architecture is defined during project engineering.
Electrical & Control Integration
High-capacity ozone installations require coordinated integration of the ozone generators, auxiliary equipment, instrumentation and plant automation.
Depending on the project, PLC/SCADA integration can provide operating sequences, status monitoring, alarms, interlocks and communication with the overall plant control system.
Gas Distribution & Process Interface
The generated ozone must then be delivered to the point of application under the required flow, concentration and pressure conditions.
For flue-gas treatment, this includes coordination with the ozone injection and mixing system and with the downstream emissions-control process.
Engineering Beyond the Generator
Longking approaches large ozone installations as integrated process systems, with engineering support covering equipment selection, system interfaces, utilities, controls and project execution.
The Pucheng reference demonstrates this capability at an installed ozone-production scale of 260 kg O₃/h.
Longking Experience in Flue Gas Ozone Systems
Pucheng is part of a much broader Longking track record in ozone-based flue-gas treatment.
Longking’s reference portfolio includes more than 100 industrial DeNOx/DeSOx ozone projects, covering applications in power generation, petrochemical processing, steel production, thermal plants and other heavy industrial sectors.
Experience Across Different Ozone Capacities
The reference base includes projects ranging from relatively small ozone systems to large multi-generator installations exceeding several hundred kilograms of ozone per hour.
Examples documented in Longking’s reference portfolio include:
Pucheng Jieneng: 260 kg O₃/h
Xuzhou Baofeng Iron & Steel: 400 kg O₃/h
Tianzhu Steel: 450 kg O₃/h
Tangshan Huaxi: 480 kg O₃/h
Tangshan Yanshan Iron & Steel: 600 kg O₃/h
WISCO Group Kungang: 600 kg O₃/h
These references demonstrate experience not only with individual ozone generators, but with the engineering and integration of high-capacity ozone systems for demanding industrial emissions-control applications.
Multiple Industrial Sectors
Longking’s flue-gas ozone references include projects in:
Steel and sintering plants
Oil refining and petrochemical facilities
Coal-fired and thermal power plants
Boiler flue-gas treatment
Chemical and industrial processing facilities
The specific ozone-system configuration varies according to the flue-gas composition, required oxidation duty, gas flow, operating conditions and downstream treatment process.
From Individual Equipment to Large Ozone Plants
This reference base shows the scalability of Longking ozone technology from smaller industrial systems to multi-unit ozone plants with several hundred kilograms per hour of installed ozone capacity.
For large projects, ozone generation must be integrated with the feed-gas system, cooling, electrical infrastructure, gas distribution, instrumentation, automation and process interfaces.
Need Support with a Large-Capacity Ozone Project?
Large ozone systems require coordinated engineering across ozone generation, feed gas, cooling, gas distribution, electrical systems, automation and process integration.
Longking EnTech Europe can support industrial ozone projects from system definition and equipment selection through integration engineering, commissioning and lifecycle support, backed by the manufacturing and R&D capabilities of the Longking Group.
Contact our team to discuss your ozone project requirements.