Dehydrogenation Catalyst

Dehydrogenation Catalyst

Product Overview

Our dehydrogenation catalyst is an advanced catalytic solution engineered for efficient removal of trace combustible components from industrial gas streams. Manufactured with a high-specific-surface-area, large-pore-diameter alumina support derived from premium low-silicon, low-sodium macroporous pseudo-boehmite, this catalyst features highly dispersed precious metal active components delivering exceptional low-temperature oxidation performance.

This catalyst is specifically designed for catalytic oxidation combustion and purification of trace hydrogen, trace CO, and trace hydrocarbons from synthesis gas. It is particularly well-suited for removing trace hydrogen from CO₂ feedstock in urea synthesis plants, where even minute hydrogen content can significantly impact process efficiency, product quality, and operational safety.

The dehydrogenation catalyst offers compact process flow, excellent thermal stability, high removal efficiency, and long service life. Its advanced formulation ensures reliable performance under demanding industrial conditions, making it an ideal choice for refineries, chemical plants, and fertilizer production facilities seeking to achieve high-purity gas streams while minimizing operational costs. Backed by extensive industrial application validation, it delivers consistent purification performance that operators can depend on.

Core Technical Principles

The dehydrogenation catalyst operates through a catalytic oxidation mechanism that converts trace combustible components into harmless byproducts.

Catalytic Oxidation Reaction Mechanism

The catalyst facilitates oxidation of hydrogen, carbon monoxide, and hydrocarbons in the presence of oxygen:

• Hydrogen Oxidation: H₂ + ½O₂ → H₂O + Heat
• Carbon Monoxide Oxidation: CO + ½O₂ → CO₂ + Heat
• Hydrocarbon Oxidation: CₙHₘ + (n + m/4)O₂ → nCO₂ + (m/2)H₂O + Heat

These exothermic reactions proceed efficiently on the catalyst surface, converting trace combustible components into water vapor and carbon dioxide. The released heat helps sustain the catalytic process, reducing external energy requirements.

Precious Metal Active Sites

The highly dispersed precious metal active components serve as catalytic active sites, providing excellent low-temperature oxidation activity. High dispersion ensures maximum precious metal utilization, delivering high catalytic activity even at low metal loadings. This design ensures efficient trace contaminant conversion at relatively low operating temperatures.

The precious metal components are carefully selected for optimal target oxidation activity while maintaining high selectivity and resistance to sintering and poisoning.

Support Structure Function

The high-specific-surface-area, large-pore-diameter alumina support plays a critical role:

• High specific surface area provides abundant sites for active component dispersion
• Large pore diameter facilitates mass transfer and diffusion of reactant molecules
• Low silicon and low sodium content ensures high purity and thermal stability
• Macroporous structure enhances active site accessibility and reaction efficiency

The optimized pore structure creates an ideal catalytic environment while maintaining structural integrity under thermal cycling. The catalyst also provides excellent mechanical strength and attrition resistance.

Mass Transfer and Diffusion

The catalyst's macroporous structure minimizes mass transfer limitations, ensuring reactant molecules quickly diffuse to active sites and product molecules diffuse away. This efficient mass transfer contributes to high reaction rates and overall catalyst efficiency, particularly for trace component removal where concentration gradients can limit performance. The optimized pore architecture balances high surface area with excellent diffusivity, maximizing both catalyst activity and utilization.

Key Features & Advantages

Exceptional Removal Efficiency

The dehydrogenation catalyst delivers outstanding performance in removing trace combustible components from gas streams. Its highly dispersed precious metal active components provide excellent low-temperature oxidation activity, achieving high conversion rates for hydrogen, CO, and hydrocarbons even at trace concentrations. This ensures treated gas meets strict purity requirements for downstream processes, protecting expensive catalysts and equipment.

The catalyst achieves high removal efficiencies for multiple impurity types simultaneously, eliminating the need for separate treatment processes. Its broad-spectrum oxidation activity makes it a versatile solution for complex gas purification challenges.

Excellent Thermal Stability

Manufactured from low-silicon, low-sodium macroporous pseudo-boehmite, the catalyst exhibits remarkable thermal stability. It maintains structural integrity and catalytic activity even under high-temperature conditions and thermal cycling. This thermal robustness ensures consistent performance throughout the catalyst's service life, reducing replacement frequency and associated downtime.

The catalyst resists thermal sintering of active components, maintaining high dispersion state even after extended operation at elevated temperatures.

Compact Process Flow

The catalyst enables a streamlined process configuration that simplifies plant operations. Its high activity allows efficient purification in a single reactor stage, eliminating the need for complex multi-stage processing systems. This compact design reduces equipment investment, simplifies operational complexity, and lowers overall operational costs.

The simplified process flow also reduces plant footprint requirements and maintenance requirements.

Long Service Life

The combination of a robust support structure and highly stable active components results in extended catalyst service life. The catalyst resists sintering, poisoning, and mechanical degradation, maintaining high activity over extended operating periods. This longevity translates to reduced replacement frequency, lower catalyst costs, and minimized production disruptions.

High Selectivity

The catalyst demonstrates high selectivity for oxidation of combustible components, minimizing undesirable side reactions that could affect gas quality or produce harmful byproducts. This selective catalytic performance ensures the main gas composition remains unaffected while target impurities are effectively removed.

This high selectivity is particularly important in CO₂ purification for urea production, where preserving CO₂ purity while removing trace hydrogen is critical.

Wide Application Range

Suitable for various industrial applications across multiple scenarios, including synthesis gas purification, CO₂ purification in urea production, and other gas purification processes. Its versatility makes it a valuable solution for diverse industrial gas treatment requirements, adaptable to different gas compositions and operating conditions.

Reliable Performance in Urea Production

Specifically optimized for CO₂ feedstock purification in urea synthesis, the catalyst effectively removes trace hydrogen that would otherwise interfere with the urea production process. By eliminating hydrogen from CO₂ streams, it helps prevent unwanted side reactions, improve product quality, and enhance overall process efficiency.

Energy Efficiency

The catalyst's high low-temperature activity allows operation at relatively mild temperatures, reducing energy consumption compared to alternative purification technologies. The exothermic nature of oxidation reactions also helps sustain catalyst bed temperature, further reducing external heat input requirements.

Application Scenarios

Urea Synthesis Plant CO₂ Purification

In urea production facilities, CO₂ feedstock typically contains trace hydrogen that can negatively impact the synthesis process, affect product quality, and pose safety concerns. The dehydrogenation catalyst efficiently removes trace hydrogen from CO₂ streams, ensuring feedstock purity and protecting downstream synthesis catalysts from degradation.

By removing hydrogen from CO₂ feedstock, the catalyst helps prevent explosive mixture formation in urea synthesis loops, enhancing plant safety. It also improves urea conversion efficiency and product quality.

Synthesis Gas Purification

Synthesis gas (syngas) production processes often contain trace amounts of hydrogen, CO, and hydrocarbons that must be removed to meet downstream process requirements. The catalyst effectively oxidizes these trace combustible components, producing high-purity syngas suitable for various chemical synthesis applications.

Carbon Dioxide Purification

Industrial CO₂ streams from various sources, including flue gas recovery, fermentation, and other industrial processes, often contain trace combustible impurities. The dehydrogenation catalyst purifies CO₂ streams by oxidizing trace hydrogen, CO, and hydrocarbons, producing high-purity CO₂ suitable for food and beverage, industrial, and other applications.

Refinery Gas Processing

Refinery off-gas streams contain various trace combustible components that require treatment before release or further processing. The catalyst efficiently removes these components, ensuring compliance with environmental regulations and improving gas quality for subsequent processing or utilization.

Chemical Plant Gas Streams

Various chemical production processes generate gas streams with trace combustible impurities that must be removed for product quality, safety, or environmental compliance. The dehydrogenation catalyst provides reliable purification performance across a range of chemical industry applications.

Hydrogen Purification

In hydrogen production and purification processes, trace CO and hydrocarbons must be removed to achieve required purity levels. The catalyst's high oxidation activity efficiently converts these impurities, producing high-purity hydrogen suitable for various industrial applications.

Technical Specifications

• Catalyst Type: Precious metal-based dehydrogenation catalyst
• Support: High-specific-surface-area, large-pore-diameter alumina derived from low-silicon, low-sodium macroporous pseudo-boehmite
• Active Component: Highly dispersed precious metals
• Appearance: Spherical or cylindrical particles
• Specific Surface Area: High surface area optimized for active component dispersion
• Pore Structure: Macroporous structure with large pore diameter for enhanced diffusion
• Operating Temperature Range: Suitable for low to medium temperature operation
• Operating Pressure: Adaptable to wide pressure range
• Space Velocity: Flexible for wide operating velocity range
• Removal Efficiency: High removal efficiency for trace H₂, CO, and hydrocarbons
• Service Life: Long service life with stable performance

Note: Detailed technical specifications are available upon request and can be customized based on specific application requirements.

Operating Instructions

Catalyst Loading

• Ensure reactor is clean and free of debris before loading
• Handle catalyst carefully to avoid breakage or dust generation
• Load catalyst evenly for uniform gas flow distribution
• Follow recommended bed height and configuration for optimal performance
• Use appropriate loading procedures to prevent particle attrition

Startup Procedures

• Gradually heat catalyst bed to operating temperature at controlled rate
• Introduce process gas gradually once catalyst reaches light-off temperature
• Monitor bed temperature and gas composition during startup
• Adjust operating parameters gradually to achieve design conditions

Operating Conditions

• Maintain operating temperature within recommended range
• Monitor pressure and gas composition within design specifications
• Ensure adequate oxygen supply for complete oxidation reactions
• Monitor pressure drop across catalyst bed regularly
• Maintain uniform gas distribution across catalyst bed

Shutdown Procedures

• Gradually reduce operating temperature following controlled cooling rate
• Reduce gas flow gradually before stopping
• Cool catalyst bed to ambient temperature before opening reactor
• Follow proper nitrogen purge if required for maintenance

Maintenance & Care

• Regularly monitor catalyst performance indicators (conversion efficiency, pressure drop)
• Inspect catalyst periodically for signs of deactivation or structural changes
• Follow regeneration procedures if activity decreases below acceptable levels
• Replace catalyst when activity drops below performance thresholds
• Store spare catalyst in original packaging in dry, cool environment

Packaging & Storage

Packaging

• Available in various packaging sizes including drums, super sacks, or custom options
• Each package clearly labeled with product name, specifications, batch number, and production date
• Packaging designed to protect catalyst from moisture and contamination during transport and storage

Storage

• Store in dry, well-ventilated area away from direct sunlight
• Avoid contact with moisture, acids, alkalis, and other corrosive substances
• Keep packaging intact to prevent contamination
• Extended shelf life under proper storage conditions
• Handle with care to avoid dropping or impact that could damage catalyst particles