Catalytic Combustion EquipmentWhat Types Are There?
According To The Process Form And Application Scenario, It Can Be Mainly Divided Into The Following Categories:
1. Direct Catalytic Combustion Equipment (RCO)
Characteristics: The Exhaust Gas Is Directly Reacted Through The Catalyst Bed, Suitable For Medium To High Concentrations (>1000 Mg/m ³), Low Air Flow Exhaust Gas, Or Exhaust Gas That Has Been Pre Treated And Concentrated.
Advantages: Simple Structure, Small Footprint, Reaction Heat Can Be Recovered Through Heat Exchangers (such As For Preheating Intake Or Heating).
2. Regenerative Catalytic Combustion Equipment (RCO, Same Name As Direct Type But Different Process)
Features: Using Heat Storage Materials (such As Ceramic Fillers) To Recover Reaction Waste Heat For Preheating The Intake Air, With A Thermal Efficiency Of Over 90%, Suitable For Low Concentration, High Air Volume Exhaust Gases (such As Painting And Printing Exhaust Gases).
Process: After The Exhaust Gas Is Heated By The Heat Storage Body, It Enters The Catalytic Bed For Reaction. The Purified High-temperature Gas Then Releases Heat Through Another Set Of Heat Storage Bodies To Achieve Heat Recycling.
3. Adsorption Catalytic Combustion Integrated Equipment
Characteristics: Combining Activated Carbon/molecular Sieve Adsorption And Catalytic Combustion, Low Concentration Exhaust Gas Is First Concentrated Into High Concentration Gas, And Then Catalytic Combustion Is Carried Out.
Applicable Scenarios: Processing Low Concentration And High Air Volume Exhaust Gases (such As Spraying And Electronic Workshop Exhaust Gases) To Reduce Equipment Investment And Operating Costs.
4. Mobile Bed Catalytic Combustion Equipment
Features: The Catalyst Can Be Dynamically Replaced Or Regenerated, Suitable For Scenarios Where The Exhaust Gas Composition Is Complex And The Catalyst Is Prone To Poisoning (such As Exhaust Gas Containing Particulate Matter Or Viscous Substances).
What Are The Commonly Used Catalysts For Catalytic Combustion?
Catalysts Are The Core Of Catalytic Combustion, Mainly Divided Into Two Categories:
1. Precious Metal Catalysts
Ingredients: Platinum (Pt), Palladium (Pd), Rhodium (Rh), Etc., Loaded On Carriers Such As Aluminum Oxide (Al ₂ O3) And Honeycomb Ceramics.
Advantages: High Activity, Low Ignition Temperature (usually Around 200 ℃), Wide Applicability.
Disadvantages: High Cost, Susceptible To Poisoning And Deactivation By Elements Such As Sulfur (S), Phosphorus (P), And Lead (Pb).
Application: Automotive Exhaust Three-way Catalyst, High-precision Industrial Exhaust Gas Treatment (such As Semiconductor Industry).
2. Non Precious Metal Catalysts
Composition: Transition Metal Oxides (such As MnO ₂, Co∝ O ₄, CuO, Etc.) Or Composite Oxides (such As Mn-Ce-O, Co-Mn-O).
Advantages: Low Cost, Strong Anti Poisoning Ability, And Some Catalysts Have Targeted Effects On Specific Pollutants (such As Nitrogen-containing And Sulfur-containing Exhaust Gases).
Disadvantages: The Ignition Temperature Is Relatively High (250-350 ℃), And The Catalytic Efficiency Is Slightly Lower Than That Of Precious Metal Catalysts.
Application: Odor Gas Treatment In Industries Such As Chemical, Pharmaceutical, And Waste Disposal.
