As the AI-driven economy continues to expand, diesel generators—key assets for emergency power and off-grid supply—emit large volumes of harmful exhaust gases including nitrogen oxides (NOx), particulate matter (PM), hydrocarbons (HC) and carbon monoxide (CO). These pollutants not only breach ever-tightening environmental regulations, but also pose long-term risks to surrounding ecosystems and human health. Leveraging cutting-edge technology and extensive exhaust-treatment experience, Green Valley Environmental launches an integrated diesel-generator after-treatment solution that combines precise DeNOx and dust removal with intelligent controls to achieve ultra-low emissions, ensuring stable, pollution-free power.
GRVNES-CYJ Series Particulate Filter
Developed in-house by Guangdong Green Valley Environmental Technology Co., Ltd., the GRVNES-CYJ is a proprietary, dry-type heavy-duty diesel exhaust-purification device. Multiple metallic DPF substrates are arranged in parallel and secured by snap-fit, slide-out cartridges for rapid service.
Developed in-house by Guangdong Green Valley Environmental Technology Co., Ltd., the GRVNES-CYJ is a proprietary, dry-type heavy-duty diesel exhaust-purification device. Multiple metallic DPF substrates are arranged in parallel and secured by snap-fit, slide-out cartridges for rapid service.
GRVNES-CYJ Black-Smoke Purifier
Designed to eliminate black smoke and PM from diesel exhaust, it employs French-imported 316L alloy-metal-fiber filter media. Modular, customized housings are engineered for 360° flow-through DPF elements, yielding large filtration area, low initial back-pressure and slow pressure-rise characteristics. Cartridges can be quickly withdrawn and water-washed for convenient regeneration.
Designed to eliminate black smoke and PM from diesel exhaust, it employs French-imported 316L alloy-metal-fiber filter media. Modular, customized housings are engineered for 360° flow-through DPF elements, yielding large filtration area, low initial back-pressure and slow pressure-rise characteristics. Cartridges can be quickly withdrawn and water-washed for convenient regeneration.
The stainless-steel casing offers long service life and a built-in 10–15 dB noise-reduction function. Black-smoke removal efficiency reaches 90–98 %. A safety bypass automatically opens on high-back-pressure alarms to guarantee uninterrupted operation.
Green Valley SCR DeNOx System
Urea solution (32.5 wt %) is injected into the exhaust stream; under controlled temperature and catalyst action, NOx is reduced to harmless N₂ and H₂O. The proprietary SCR system holds independent IP and multiple invention patents, backed by extensive field data to ensure robust design and reliable performance. It meets the latest national emission limits for ultra-low NOx and <3 ppm ammonia slip.
Urea solution (32.5 wt %) is injected into the exhaust stream; under controlled temperature and catalyst action, NOx is reduced to harmless N₂ and H₂O. The proprietary SCR system holds independent IP and multiple invention patents, backed by extensive field data to ensure robust design and reliable performance. It meets the latest national emission limits for ultra-low NOx and <3 ppm ammonia slip.
Selective Catalytic Reduction (SCR) uses NH₃ or urea as a reducing agent. Thanks to NH₃’s high selectivity for NOx over O₂, NOx is converted to N₂ and H₂O. An Ammonia Slip Catalyst (ASC) coated on the SCR outlet oxidizes any surplus NH₃ to N₂ and H₂O, preventing secondary pollution. Exhaust temperatures after the turbine typically range 300–550 °C, ideal for mid/high-temperature catalysis; when temperatures exceed 550 °C, a thermal-management module is recommended, with a corresponding cost increase.
The system delivers compact structure, intelligent operation, precise dosing, pre-alarms, data acquisition, remote control and online transmission while maintaining NOx ultra-low emissions and NH₃ slip <3 ppm—offering strong overall competitiveness.
Technical Advantages
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Patented mixing technology ensures thorough NH₃/flue-gas contact for near-zero NOx emissions.
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Precision dosing adapts to load variations for steady compliance.
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Closed-loop & open-loop hybrid control.
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Modular packaging guarantees reactor airtightness.
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IoT integration enables multi-terminal remote monitoring.
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Expert team with CFD & ANSYS modeling for finite-element simulation support.
Post time: Jul-15-2025