Haoran Machinery: A specialized manufacturer of stainless steel vessels.
03
2026
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11
New Product Launch – Stainless Steel Catalytic Converter Baffle
The stainless steel catalytic trap is a diesel exhaust aftertreatment device. The housing is made of stainless steel, and the interior provides dual functionality: particulate interception and filtration combined with catalytic oxidation purification. , In industry jargon, it’s called a catalytic interceptor; the standard term is catalytic particulate trap or DOC+DPF assembly.
✅ How it works
- Interception (DPF filtering) : Wall-flow substrates (silicon carbide / cordierite ceramics, metallic corrugated substrates) trap black smoke carbon particles PM;
- Catalysis (DOC catalytic coating, platinum-palladium precious metals) ：
- CO → CO₂
- HC (hydrocarbon) → CO₂ + H₂O
- Reduce the soot ignition temperature and achieve Passive regeneration , the soot burns off spontaneously at high temperatures, preventing rapid clogging;
Some designs feature an integral metal carrier (a metallic honeycomb substrate that serves as both the support and the catalytic coating, with no separate ceramic DPF and a POC architecture), resulting in lower back pressure and improved vibration resistance.
✅ Material Description
- Shell: 409 stainless steel (mainstream, resistant to high-temperature thermal cycling, cost-effective) ; Moisture, marine, and coastal environment upgrades 304 stainless steel ；
- Lining: high-temperature-resistant insulating cotton;
- Carrier: Ceramic carrier (SiC / cordierite) or stainless steel corrugated metal honeycomb carrier;
- Coating: Pt, Pd precious metal catalytic coating.
✅ Applicable Scenarios
- Diesel generator sets, forklifts, construction machinery, non-road diesel engines, marine auxiliary engines, and exhaust aftertreatment for retrofitted diesel trucks;
- Applications: reduces black smoke and lowers CO/HC emissions, meeting China III, China IV, Euro 4/Euro 5, and EPA Tier emission standards.
- Configuration: Typically cascaded with an SCR denitrification unit to form a complete exhaust gas aftertreatment system.
The new product has been shipped. Haoran Machinery remains committed to R&D and looks forward to advancing together with more customers and partners.
Stainless Steel Catalytic Trap
A professional manufacturer of stainless steel containers with over 10 years of experience.
Contact Us
Address: Workshop No. 1, Weizhou Science and Innovation Park, northwest corner at the intersection of Industrial Third Street and Changsheng Road, Weicheng District, Weifang City, Shandong Province.
