Copper-Nickel Desulfurization Catalyst

Copper-Nickel Desulfurization Catalyst

Product Overview

The Copper-Nickel Desulfurization Catalyst is an advanced dual-system catalytic solution engineered for deep purification of petroleum refining feedstocks. Featuring a uniquely formulated copper-nickel bimetallic active phase, this catalyst delivers exceptional performance in removing sulfur compounds and other detrimental impurities from various hydrocarbon streams.

Supplied in pre-reduced form, the catalyst eliminates the need for on-site reduction procedures, significantly streamlining plant commissioning and startup. Its robust design ensures reliable performance across a broad spectrum of operating conditions, making it ideal for refineries seeking to protect downstream noble metal catalysts while maintaining high product purity.

Successfully deployed across multiple large-scale refining operations in China, this catalyst demonstrates consistent performance in catalytic reforming units, hydrocracking facilities, and isomerization/alkylation processes. Its ability to simultaneously remove inorganic sulfur, organic sulfur, chlorine, and arsenic makes it a versatile purification solution for modern refining operations.

Technical Principle

Copper-Nickel Dual Active Component Synergy

The catalyst's exceptional desulfurization performance stems from the synergistic interaction between copper and nickel active species dispersed across a high-surface-area support matrix. Copper serves as the primary active phase for sulfur adsorption and dissociation, while nickel enhances catalytic activity by promoting hydrogen spillover and facilitating organic sulfur hydrogenolysis.

This bimetallic configuration creates multiple active sites with varying adsorption energies, enabling effective capture of sulfur compounds across a wide range of molecular sizes and reactivity levels. The close proximity of copper and nickel sites allows rapid intermediate transfer, resulting in higher reaction rates and more complete sulfur removal than single-metal systems.

Advantages of Pre-Reduced Form

Unlike conventional oxide-form catalysts requiring time-consuming in-situ reduction before operation, our Copper-Nickel Desulfurization Catalyst is delivered in a fully pre-reduced state. Pre-reduction is performed under precisely controlled manufacturing conditions, ensuring optimal metal particle size distribution and maximum active site exposure.

Key operational advantages of the pre-reduced form:

• Eliminates on-site reduction procedures, reducing commissioning time by days
• Avoids operational risks from improper reduction such as metal sintering or incomplete activation
• Ensures consistent catalyst quality through expert-controlled manufacturing
• Enables rapid startup with immediate achievement of design purification performance
• Reduces hydrogen consumption during plant commissioning

Multi-Impurity Removal Mechanism

Inorganic Sulfur Removal

The catalyst efficiently removes inorganic sulfur, primarily hydrogen sulfide (H₂S), through chemisorption. Copper active sites react directly with H₂S to form stable copper sulfides, while nickel sites contribute to dissociative adsorption and hydrogen-assisted sulfur transfer. This dual-site mechanism ensures deep removal to sub-ppm levels.

Organic Sulfur Removal

For organic sulfur compounds such as mercaptans, sulfides, disulfides, and thiophenes, the catalyst employs a two-step process: first, nickel sites catalyze hydrogenolysis of organic sulfur bonds, converting organic sulfur into H₂S; second, the resulting H₂S is captured by the copper phase. This cascade mechanism enables efficient removal of even trace levels of refractory organic sulfur.

Chlorine and Arsenic Removal

Beyond sulfur, the catalyst demonstrates high removal efficiency for trace chlorine and arsenic impurities. Chlorine compounds are adsorbed through chemical interaction with both the active metal phase and support material. Arsenic, particularly damaging to noble metal catalysts, is captured through alloy formation with nickel sites, effectively sequestering these poisons before they reach downstream beds.

Key Features & Advantages

High Purification Depth

The Copper-Nickel Desulfurization Catalyst achieves ultra-deep impurity removal, reducing sulfur levels to the ppb range required for protecting sensitive downstream catalysts. Its bimetallic active phase effectively captures even the most refractory sulfur compounds.

Broad Application Range

Engineered for versatility, the catalyst performs effectively across a wide range of feedstocks including straight-run naphtha, hydrotreated naphtha, and various refinery streams. It operates successfully under diverse pressure and temperature conditions.

Excellent Activity Stability

The catalyst maintains consistent purification performance throughout its service life, thanks to optimized metal dispersion and robust support structure. The copper-nickel bimetallic formulation resists sintering and coking under typical operating conditions.

Operational Convenience

Supplied in pre-reduced form, the catalyst significantly simplifies plant startup. Refiners avoid complex reduction protocols required by conventional oxide-form catalysts, reducing commissioning time and operational risks.

Multi-Impurity Simultaneous Removal

A single catalyst bed handles multiple impurity types simultaneously—inorganic sulfur, organic sulfur, chlorine, and arsenic—reducing the need for separate treatment units. This multi-functionality simplifies process design and reduces capital and operating costs.

Superior Noble Metal Catalyst Protection

As an upstream guard bed material, the catalyst serves as a critical protective barrier for expensive downstream noble metal catalysts. By effectively removing catalyst poisons to ultra-low levels, it extends catalyst service life and preserves activity and selectivity.

Applications

Catalytic Reforming Feedstock Purification

The primary application is pretreatment of reformer feedstocks. Catalytic reforming units rely on highly sensitive platinum-based catalysts easily poisoned by sulfur, chlorine, and arsenic. Our desulfurization catalyst ensures feedstock purity meets stringent requirements, protecting catalyst performance and maintaining product octane levels.

Hydrocracking Unit Protection

Hydrocracking catalysts, particularly those containing noble metals, require sulfur-free feed. The Copper-Nickel Desulfurization Catalyst serves as an effective guard bed, removing impurities that would otherwise deactivate catalysts and reduce product yields and quality.

Isomerization and Alkylation Unit Feed Treatment

Isomerization and alkylation processes use acid or noble metal catalysts highly susceptible to sulfur poisoning. Installing our desulfurization catalyst upstream ensures consistent feed purity, maintaining catalyst activity and product quality while extending service life.

Other Deep Desulfurization Processes

The catalyst applies to any refinery or petrochemical process requiring deep sulfur removal, including hydrogen purification, light hydrocarbon treatment, and specialty chemical production where sulfur contamination adversely affects product quality or catalyst performance.

Industrial Applications / Case Studies

The Copper-Nickel Desulfurization Catalyst has been successfully implemented in over a dozen major refining operations across China, establishing a proven track record of reliable performance and customer satisfaction. Key installations include:

• Shenghong Refining & Chemical (Lianyungang) — Catalytic reforming unit feed pretreatment
• Zhejiang Petrochemical — Hydrocracking unit guard bed application
• PetroChina Guangdong Petrochemical — Reforming feedstock purification
• Changqing Petrochemical — Isomerization unit feed treatment
• Daqing Refining & Chemical — Alkylation unit feed purification
• Fushun Petrochemical — Catalytic reforming pretreatment
• North China Petrochemical — Hydrocracking unit protection
• Sinopec Shengli Oilfield — Reforming feedstock desulfurization
• Shandong Jingbo Petrochemical — Multi-unit feed purification
• Shandong Dongying Shengli Petrochemical General Plant — Reforming and hydrocracking
• Sinochem Hongrun Petrochemical — Deep desulfurization for process units
• Shandong Kenli Petrochemical — Catalytic reforming pretreatment
• Shandong Kexin Petrochemical — Hydroprocessing unit guard bed
• Yongping Refinery — Naphtha desulfurization for reforming feed

Across all installations, the catalyst has consistently delivered deep impurity removal, stable operation over extended service cycles, and reliable protection for downstream noble metal catalysts. These successful deployments across state-owned oil majors, local refineries, and joint-venture operations demonstrate the catalyst's broad applicability and robust performance under varied operating conditions.

Technical Specifications

• Catalyst System: Copper-nickel bimetallic desulfurization catalyst
• Active Components: Copper and nickel dual active phase
• Physical Form: Pre-reduced solid catalyst particles
• Supply Form: Pre-reduced, ready for immediate use without on-site activation
• Removal Capabilities: Inorganic sulfur, organic sulfur, chlorine, and arsenic
• Application Scope: Suitable for various reforming feedstocks and hydrotreated naphtha
• Operating Mode: Fixed bed reactor configuration
• Performance Feature: Deep removal to sub-ppm impurity levels
• Stability: Long service life with maintained catalytic activity
• Compatibility: Compatible with various refining process configurations

Operating Guidelines

The Copper-Nickel Desulfurization Catalyst is designed for straightforward operation in fixed-bed reactor systems. Key guidelines for optimal performance:

Reactor Loading: Follow standard catalyst loading procedures for uniform bed distribution and minimal pressure drop.

Startup Procedures: Supplied in pre-reduced form, the catalyst can be brought online directly without separate reduction. Gradually heat the reactor to operating temperature while flowing inert gas or desulfurized feedstock, following recommended temperature ramp rates.

Operating Conditions: The catalyst performs effectively within temperatures and pressures typical of naphtha hydrotreating and reforming feed pretreatment. Consult our technical team for condition recommendations based on your feedstock and purity requirements.

Feedstock Considerations: Excessive heavy metals or particulate matter should be removed upstream through filtration or guard beds to prevent physical fouling.

Performance Monitoring: Regularly monitor outlet impurity levels. The catalyst maintains consistent removal efficiency through most of its service life, with gradual deactivation toward end-of-life.

Shutdown Procedures: For planned shutdowns, cool the bed gradually under inert or desulfurized atmosphere to prevent uncontrolled oxidation of reduced metal sites.

Packaging & Storage

Packaging

The catalyst is packaged in sealed, nitrogen-purged steel drums to maintain the pre-reduced state and prevent oxidation during transport and storage. Each drum is clearly labeled with product identification, lot number, and handling instructions. Packaging quantities are standardized for convenient inventory management.

Storage

Proper storage is essential for preserving catalyst quality, particularly since the product is supplied in pre-reduced form:

• Store in a cool, dry, well-ventilated area away from direct sunlight and moisture
• Maintain storage temperatures within the recommended range
• Keep containers tightly sealed when not in use to prevent air ingress and oxidation
• Protect from physical damage that could compromise the protective atmosphere
• Store away from oxidizing agents, acids, and incompatible materials
• Observe recommended shelf life; consult product documentation for details
• Handle with appropriate personal protective equipment

Important Pre-Reduced Form Precautions: Pre-reduced metal sites are reactive and can undergo exothermic oxidation if exposed to air. Always open containers under inert atmosphere or in well-ventilated areas following proper safety protocols. Never expose large quantities of pre-reduced catalyst directly to air, as spontaneous heating may occur.

Why Choose Us

Our Copper-Nickel Desulfurization Catalyst offers refiners a proven, reliable solution for deep feedstock purification and downstream catalyst protection. Here's why industry leaders choose our catalyst:

Proven Industrial Performance: With successful installations at over 14 major refining enterprises across China, our catalyst demonstrates consistent performance in real-world operating environments. These references span state-owned enterprises, major local refineries, and joint-venture operations, providing comprehensive technology validation.

Advanced Bimetallic Technology: The copper-nickel dual active component design delivers superior desulfurization performance compared to single-metal alternatives. The synergistic mechanism enables deeper impurity removal and broader impurity spectrum coverage, providing more comprehensive feed purification in a single catalyst bed.

Ready-to-Use Convenience: The pre-reduced supply form eliminates on-site activation, reducing commissioning complexity and accelerating time-to-production. This advantage translates directly into cost savings and operational flexibility for our customers.

Comprehensive Impurity Removal: A single catalyst handles sulfur (both inorganic and organic), chlorine, and arsenic—four of the most problematic catalyst poisons in refining operations. This multi-functionality reduces process complexity and capital requirements compared to multi-stage treatment approaches.

Superior Catalyst Protection: As a front-line defense for noble metal catalysts, our product protects significant customer investments in reforming, hydrocracking, and isomerization catalysts. The deep removal capability ensures downstream catalysts operate at peak efficiency and achieve full design service life.

Technical Expertise and Support: Backed by years of catalyst development and application experience, our technical team provides comprehensive support from initial system design through ongoing operation optimization. We work closely with customers to ensure optimal catalyst loading, operating parameters, and performance monitoring.

In an industry where catalyst performance directly impacts profitability and product quality, our Copper-Nickel Desulfurization Catalyst stands as a reliable, high-value solution for refiners committed to operational excellence.