With the International Maritime Organization (IMO) tightening sulfur emission regulations and advancing carbon neutrality goals, cargo ships now face two critical pollution challenges: black smoke emissions and excessive nitrogen oxide levels. The diesel engines and auxiliary power units generate particulate matter (PM) and visible carcinogenic black smoke during operation. Traditional marine engines typically emit NOx concentrations exceeding 2000 mg/m³ – far surpassing the IMO Tier III standard (3.4g/kWh) – making effective exhaust purification an urgent priority.
Green Valley Environmental Protection launched a DPF+SCR exhaust gas purification system for cargo ships to achieve the “dual reduction” of particulate matter and nitrogen oxide.The Regenerative Particulate Filter (DPF) utilizes French-imported 316L alloy metal felt, featuring high heat resistance, corrosion resistance, and excellent permeability. A simple 30-40 second water rinse enables regeneration, delivering long service life and low maintenance costs while meeting the Lineman Blackness Class I standard of 15 mg/Nm³. The DPF incorporates an intelligent bypass system that automatically activates when backpressure exceeds limits, preventing power loss during emergencies to ensure safe ship operations.
The SCR denitrification system independently developed by Green Valley Environmental Protection boasts independent intellectual property rights and multiple invention patents in ultra-low nitrogen oxide emissions. Its modular design optimally accommodates cabin space operations, integrating intelligent precision spraying, real-time alarms, data management systems, remote control capabilities, and online transmission functions. This system achieves ultra-low emissions while maintaining ammonia slip below 3ppm, demonstrating strong comprehensive competitiveness.
The Green Valley DPF+SCR system converts black smoke into renewable materials and reduces nitrogen oxides into harmless nitrogen, making each cargo ship a mobile green coordinate and promoting the shipping industry from “passive emission reduction” to “resource management”.
Post time: Jul-25-2025