SCR NOx Control Catalyst for Diesel Engine Fe/zeolite Cu/Zeolite Vanadium

SCR Catalyst (NOx Control Catalyst)

Depending on the NO/NO₂ content in the exhaust gas, two important main SCR reactions are distinguished:

• Without NO₂: Standard SCR:
  
  4 NH₃ + 4 NO + O₂ → 4 N₂ + 6 H₂O
   
• With NO₂: Fast SCR:
  
  4 NH₃ + 2 NO + 2 NO₂ → 4 N₂ + 6 H₂O

Advantages:

• Low pressure drop
• High surface area
• Good consistency water absorption
• Low thermal expansion coefficient
• Good heat shock resistance and heat vibration resistance
• Ideal matching with various active catalyst components

Features

WFEC has developed SCR catalysts for meeting NOx emission control both of mobile and stationary applications. Depending on different application scene, WFEC can provide matched wash-coated products including Fe/zeolite (450~620 ^oC), Cu/Zeolite (190~550 ^oC), vanadium-based metal oxides (230~470 ^oC) and Mn-containing oxide catalysts (130~250 ^oC).

Applications

Boilers / Turbines

Diesel engine emissions

Engine systems for vessels

Industrial processes

Others (iron and steel making, coking plant and cement manufacturing)

Specifications

Square honeycomb SCR w/ or w/o NH₃-slip catalyst

   ---Cell desity:40/75/100/200/300 cpsi

   ---Size:150*150*100/150/200/250/300/400mm

Cylindrical honeycomb SCR w/ or w/o NH₃-slip catalyst

   ---Cell desity: 300/400/600 cpsi

   ---Size:(ϕ143.8~330.2mm)*(101.6~177.8mm)

Customer customization