Green Valley POC (Particle Oxidation Catalyst) is an open-flow catalytic particulate purification device designed for low load and continuous operation diesel exhaust treatment. It is widely used for stationary generator sets, industrial diesel equipment and auxiliary power exhaust aftertreatment scenarios to efficiently reduce particulate matter emissions with low back pressure and high operational stability.
Structure:
Different from the closed intercepting structure of conventional DPF, the POC adopts a multi layer corrugated metal mesh substrate with an open channel design. Coated with high efficiency precious metal catalyst, it combines physical interception and catalytic oxidation to achieve continuous soot purification. The open-flow structure fundamentally avoids blockage risks and requires no forced regeneration or ash cleaning maintenance.
Reaction Mechanism:
During operation, engine exhaust first enters the front DOC section, where HC and CO are oxidized into harmless H₂O and CO₂, and partial NO is converted into strong oxidative NO₂. When exhaust gas flows through the POC core, trapped soot (carbon particles) is continuously oxidized by NO₂ and residual oxygen under normal exhaust temperature, realizingpassive and self sustaining purification.
Advantages:
POC features ultra low exhaust resistance, no pressure drop accumulation, and full time automatic regeneration throughout the service cycle. It supports long term continuous operation without shutdown maintenance, greatly reducing later stage operation costs. The all metal integrated structure delivers excellent thermal shock resistance and high temperature stability, adapting to complex and variable working conditions of industrial diesel equipment.