As a core power equipment in scenarios such as industrial production, emergency power supply, and infrastructure projects, diesel generator sets emit exhaust gas during operation, which has become one of the important sources of air pollution. Pollutants in the exhaust gas, including nitrogen oxides (NOₓ), particulate matter (PM), carbon monoxide (CO), hydrocarbons (HC), and sulfides (SOₓ), not only cause damage to the ecological environment but also seriously endanger human health. With the strict control of national environmental protection policies, enterprises are paying increasing attention to the demand for diesel generator set exhaust gas treatment, and the practical application of professional environmental protection technologies has become a rigid demand in the industry.
Green Valley Environmental Protection’s Diesel Particulate Filter (DPF) is independently developed. It initially intercepts particulate dust and soot particles in the exhaust gas through metal or ceramic filter elements, reducing the processing load of subsequent core equipment. During generator set maintenance, the metal filter element can be flexibly pulled out of the filter unit for water washing and regeneration. The intelligent control system triggers an alarm and opens the bypass when high back pressure occurs due to PM soot particle clogging during engine operation. After treatment by Green Valley Environmental Protection’s DPF, the exhaust gas meets Ringelmann Blackness Level 1 / 15mg/Nm³.
The Diesel Oxidation Catalyst (DOC) technology uses precious metal catalysts to oxidize CO and HC in the exhaust gas into CO₂ and H₂O, and can oxidize part of NO into NO₂, providing conditions for DPF regeneration. After purification, the removal rate of CO and HC is ≥90%, and the reaction temperature ranges from 200℃ to 300℃. It can be used in combination with SCR and DPF to enhance the overall purification effect. After exhaust gas detection, the urea injection volume is adjusted through an automatic control system to ensure that the treated exhaust gas indicators meet national environmental protection standards. At the same time, a noise reduction device is installed to reduce noise pollution during exhaust gas emission, achieving the dual effect of “environmental protection + noise reduction”.
Green Valley Environmental Protection continues to provide customers with reliable, energy-efficient and high-performance flue gas treatment products and customized overall solutions. Based on customers’ unit operating conditions and environmental protection requirements, Green Valley Environmental Protection has designed an integrated DOC+DPF+SCR treatment system. By configuring DOC, it removes CO and HC and oxidizes part of NO, creating conditions for the subsequent SCR reaction; at the same time, the DPF efficiently captures PM particles. To avoid filter element clogging, Green Valley Environmental Protection’s SCR catalyst (adaptive to the temperature window of the catalyst bank) is paired with an intelligent urea injection system, which automatically adjusts the injection volume according to the exhaust gas temperature and NOₓ concentration to ensure stable denitration efficiency.
Post time:
Nov-20-2025
