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As the global chemical industry accelerates toward green transformation and intelligent manufacturing, Junyuan Petroleum Group warmly welcomes you to visit our booth at ICIF China 2025, held from September 17–19, 2025, at the Shanghai New International Expo Center.

With over two decades of expertise in high-purity hydrocarbon solvents and sulfur-based additives, Junyuan has become a trusted supplier to clients across Asia, the Middle East, Africa, and the Americas. Our flagship products include:

• n-Pentane, Iso-Pentane, Cyclopentane
• n-Hexane, Iso-Hexane, n-Heptane
• DTBPS and TBPS sulfur additives

These materials are widely used in:

• 🌱 Eco-friendly blowing agents and refrigerants
• 🧪 Food-grade extraction solvents (REACH-compliant)
• 🏭 Petrochemical refining and catalyst systems
• 🏗 Construction, coatings, pharmaceuticals, and more

🔧 Why Partner with Junyuan?

• Integrated Supply Chain: Six subsidiaries covering R&D, production, logistics, and export operations
• Global Compliance: Products certified under REACH, ISO, and other international standards
• Technical Excellence: Stable performance, high purity, and tailored formulations
• International Service: Multilingual support and customized solutions for global clients

📅 Exhibition Dates: September 17–19, 2025 📍 Venue: Shanghai New International Expo Center, China

Our international business team and technical consultants will be on-site to discuss your needs, explore collaboration opportunities, and share insights into the evolving chemical landscape.

We look forward to meeting you at ICIF China 2025 and building the future of chemical innovation—together.

Process Steps Explained

1. Raw Material – DCPD (Dicyclopentadiene): DCPD is commonly sourced as a byproduct from petroleum refining processes. It serves as the starting material for the production of Cyclopentane.
2. Thermal Cracking: Under high-temperature conditions, DCPD undergoes thermal cracking. This reaction breaks its molecular structure to form Cyclopentadiene, which is an unstable intermediate but necessary for the subsequent step.
3. Catalytic Hydrogenation: The Cyclopentadiene is then subjected to a catalytic hydrogenation process. In the presence of a suitable catalyst and hydrogen gas, Cyclopentadiene is converted into the stable product, Cyclopentane.
4. Final Product – Cyclopentane: Cyclopentane, the final product, is widely used as a blowing agent in the production of polyurethane foam, refrigerant insulation materials, and other applications where its distinct properties are beneficial.

Cyclopentane Production Process Flow Diagram

Below is an overview of the process used to produce Cyclopentane from DCPD.

1. Raw Material: DCPD (Dicyclopentadiene)

• Source: DCPD is typically obtained as a byproduct of petroleum refining processes. It serves as the starting material for this production route.

2. Thermal Cracking

• Process: Under high-temperature conditions, DCPD undergoes thermal cracking.
• Intermediate Result: This step converts DCPD into Cyclopentadiene, an unstable intermediate necessary for the next transformation.

3. Catalytic Hydrogenation

• Process: The Cyclopentadiene intermediate is subjected to a catalytic hydrogenation reaction.
• Outcome: With the presence of a suitable catalyst and hydrogen gas, Cyclopentadiene is converted into the final product—Cyclopentane.

Final Product: Cyclopentane

Applications

• Usage: Cyclopentane is widely utilized as a blowing agent in the production of polyurethane foam, as well as in insulation materials for refrigeration and construction applications.
• Benefits: Its favorable physical properties and environmental advantages make Cyclopentane a preferred choice in these applications.

   ┌─────────────────────────────┐  
   │ Raw Material: DCPD          │  
   │ (Dicyclopentadiene)         │  
   └─────────────────────────────┘  
                │  
                │  (Thermal Cracking)  
                ▼  
   ┌─────────────────────────────┐  
   │ Intermediate:               │  
   │ Cyclopentadiene             │  
   └─────────────────────────────┘  
                │  
                │  (Catalytic Hydrogenation)  
                ▼  
   ┌─────────────────────────────┐  
   │ Final Product:              │  
   │ Cyclopentane                │  
   └─────────────────────────────┘  

In the heart of a bustling industrial hub, where innovation meets environmental stewardship, a quiet hero plays a pivotal role in shaping the future of construction. This hero is n-Pentane, a simple yet powerful hydrocarbon that has become the backbone of eco-friendly insulation solutions and is indispensable for modern manufacturing processes.

Once overlooked in favor of less sustainable alternatives, n-Pentane emerged as a game-changer in the production of high-performance insulation panels. These panels, widely applied in areas such as cold storage, roof and wall cladding, façades, and insulated industrial doors, depend on n-Pentane to create their lightweight, energy-efficient cores. Its introduction has revolutionized the thermal insulation industry while addressing critical environmental concerns. Unlike older materials that harmed the ozone layer, n-Pentane boasts a zero ozone depletion potential (ODP), affirming its role as a key enabler of environmentally responsible manufacturing.

The story of n-Pentane begins in advanced production facilities, where it serves as an essential blowing agent in creating polyurethane and polyisocyanurate foams. These foams rely on n-Pentane to expand and form tiny bubbles, resulting in a highly effective structure for heat insulation. This process transforms raw materials into reliable products such as panels for extreme climates, significantly reducing energy use across diverse applications. Whether safeguarding perishable goods in cold storage or improving building energy efficiency, n-Pentane is at the core of sustainable solutions.

What truly sets n-Pentane apart is its remarkable ability to combine outstanding performance with environmental sustainability. It is a perfect match for manufacturers who prioritize eco-friendly initiatives and compliance with global green building standards. By contributing to modern insulated panels, n-Pentane facilitates projects that aim for both durability and environmental responsibility, reflecting its alignment with global trends in sustainable construction.

Beyond its technical applications, n-Pentane ensures smooth supply chain operations. Manufacturers worldwide depend on its reliable quality to produce top-tier insulation products on tight timelines, meeting the evolving needs of their markets and projects.

In a world increasingly committed to sustainability, n-Pentane is far more than a chemical—it is a catalyst for progress. From protecting perishable goods to improving energy efficiency in construction, it enables a future where buildings are greener, energy is conserved, and the planet is preserved. As the drive for sustainable practices continues, n-Pentane remains an essential component in shaping a world where innovation and environmental care go hand in hand.

#Cyclopentane #Isopentane #nPentane #nHexane #nHeptane #SulfidingAgent #Pentane #Hexane #Heptane #MayDay #LabourDay #Logistics #ChemicalIndustry #SupplyChain

As Labour Day holidays vary across countries, timely coordination in logistics becomes essential. For global buyers of hydrocarbons like Pentane, Hexane, Heptane, and sulfiding agents, early planning ensures supply chain continuity during the early May slowdown.

With the global Labour Day (May Day) holidays approaching, it’s crucial for international buyers of chemical raw materials to prepare ahead—especially when sourcing from across regions with varying public holiday schedules.

Our product portfolio covers a wide range of high-purity hydrocarbons, including n-Pentane, Isopentane, Cyclopentane, n-Hexane, n-Heptane, and various sulfiding agents. These materials serve industries from polyurethane insulation, refrigeration, and adhesives to pharmaceuticals, refining, and electronics.

Key Holiday Timelines to Note:

• Russia: May 1–3, with many extending holidays until May 9 (Victory Day)

• Japan: Golden Week, typically May 1–7, with some businesses closed for up to 11 days

• France: May 1 only, strict labor laws prohibit most business activities

• Australia: Varies by state, with Queensland and Northern Territory observing May 6

• UK, Egypt, Pakistan, South Africa, Thailand, and others: May 1 as a national holiday

No May 1 Holidays:

Markets such as South Korea, Israel, the United States, Canada, and the Netherlands operate normally during early May but observe labor-related holidays at other times.

“🌟 GET FOAM, NOT FOMO! 🌟 Foam Expo is the hub for innovation in foam technologies. We’re here showcasing our high-purity pentane solutions—essential for eco-friendly foam production and advanced thermal insulation. Let’s innovate together!

UNLOCK A YEAR OF BUSINESS OPPORTUNITIES

Foam Expo is the continent’s largest foam and adhesives supply chain event, offering three days of networking, innovation, and business growth. Explore new materials, technologies, and solutions, gain insights from conference sessions, and connect with key decision-makers at the expo. With foam and adhesives under one roof, your team can maximize opportunities and set the stage for success all year long.

Foam-Expo-2025

Why a 20/80 Cyclopentane/n-Pentane Ratio is Widely Used in the Insulation Industry

In the world of polyurethane (PU) rigid foam insulation, blowing agents play a crucial role in determining foam quality, thermal insulation, and process efficiency. Among the many options available, a blend consisting of 20% Cyclopentane and 80% n-Pentane has emerged as a go-to solution for manufacturers seeking an optimal balance of performance and cost.

Why This Specific Blend?

Each component in the blend brings unique properties to the table:

• Cyclopentane is valued for its low thermal conductivity, allowing foams to achieve excellent insulation performance. It also has zero ozone depletion potential (ODP) and relatively low global warming potential (GWP), making it more environmentally friendly. However, it is more expensive and can pose challenges in flowability and evaporation rate during foam processing.

• n-Pentane, on the other hand, is more economical, with higher vapor pressure and better flowability, making it easier to process, especially in large-scale industrial applications. But used alone, it tends to result in larger, less uniform foam cells, which can compromise insulation performance.

By blending 20% Cyclopentane with 80% n-Pentane, manufacturers can harness the strengths of both components: the superior insulation of Cyclopentane and the process efficiency and cost benefits of n-Pentane.

Where Is This Blend Used?

This pentane mixture is widely applied in:

• Household Refrigerators & Freezers: Used in the insulation layer of refrigerator cabinets and doors, ensuring high energy efficiency and consistent thermal performance.

• Construction Insulation Panels: Applied in rigid PU foam boards for building walls and roofs, providing lightweight, effective thermal barriers.

• Cold Chain Logistics: Employed in the insulation of refrigerated trucks and containers, helping maintain low temperatures during transportation.

Environmental and Safety Considerations

While the blend is non-ozone depleting and has lower GWP than legacy blowing agents like CFCs or HCFCs, it is still flammable and must be handled with proper safety protocols. Many modern production lines are equipped with explosion-proof equipment and ventilation systems to safely manage pentane-based formulations.

Conclusion

The 20/80 Cyclopentane/n-Pentane blend is a prime example of how smart chemical engineering can optimize material performance while balancing economic and environmental concerns. As global demand for energy-efficient insulation grows, such formulations will continue to play a key role in sustainable manufacturing.

Driving High-Quality Growth and Industry Collaboration at Asia’s Premier Petrochemical Exhibition

Summary

Junyuan Petroleum Group is set to participate in ICIF China 2025, Asia’s leading petrochemical exhibition, from September 17 to 19 at the Shanghai New International Expo Center. This highly anticipated event will bring together over 2,500 exhibitors and 90,000 industry professionals to explore cutting-edge technologies, innovative products, and future market trends. As China’s leading n-Hexane producer, Junyuan Petroleum Group will leverage this platform to showcase its latest advancements in energy, petrochemicals, and specialty chemicals, reaffirming its commitment to high-quality development and sustainable innovation.

Junyuan Petroleum Group will proudly participate in ICIF China 2025, one of the most influential petrochemical exhibitions in Asia, aiming to engage with industry leaders, strengthen business partnerships, and showcase its latest product innovations. Themed “New Development, New Pattern, Shaping the Future”, this year’s event will focus on energy transformation, sustainable solutions, and digitalization in the chemical sector.

As a key player in the petrochemical and fine chemical industries, Junyuan Petroleum Group will present its comprehensive product portfolio, including high-purity hydrocarbons, eco-friendly solvents, and cutting-edge chemical solutions. The company’s representatives will also participate in industry forums and technical discussions, sharing insights on market trends, regulatory developments, and advancements in green chemistry.

ICIF China 2025 provides an excellent opportunity for Junyuan Petroleum Group to enhance its global presence, forge strategic alliances, and explore emerging opportunities in the evolving chemical landscape. By leveraging this event, the company aims to expand its international market reach, accelerate technological innovation, and drive the sustainable development of the petrochemical sector.

Junyuan Petroleum Group warmly invites industry professionals, partners, and potential clients to visit its booth at ICIF China 2025 for in-depth discussions and collaboration opportunities. The company remains dedicated to innovation, quality, and sustainability, contributing to the transformation and advancement of the global chemical industry.

Keywords

Junyuan Petroleum Group, ICIF China 2025, Petrochemical Exhibition, High-Quality Development, Energy Innovation, Sustainable Solutions, Chemical Industry, Specialty Chemicals, Global Partnerships, Industry Collaboration, Green Chemistry

The Ultimate Polysulfide Solution for Catalyst Sulfidation

In the world of petroleum refining and petrochemicals, catalyst performance is paramount. To ensure maximum efficiency, stability, and longevity, catalyst activation through sulfidation is crucial. Enter DTBPS (di-tert-butyl polysulfide) or TBPS, an innovative polysulfide compound that is revolutionizing the way catalysts are treated before use.

DTBPS or TBPS is a specialized agent designed to provide the most effective and controlled sulfidation process for catalytic systems. It ensures optimal performance in key refining processes such as hydrocracking, catalytic cracking, and hydrotreating. By forming a protective sulfur layer on the catalyst surface, DTBPS or TBPS significantly enhances the catalyst’s activity and resistance to deactivation, resulting in longer operational life and higher throughput.

One of the most compelling reasons to incorporate DTBPS or TBPS into your catalyst preparation process is its ability to create a stable sulfurized surface quickly and efficiently. This not only maximizes catalyst efficiency but also minimizes the risk of catalyst poisoning from impurities that may be present in feedstock. With DTBPS or TBPS, refineries are able to streamline their operations, improve the quality of refined products, and optimize overall plant performance.

Furthermore, DTBPS or TBPS’s versatile and high-performance nature makes it suitable for a wide range of refining and petrochemical processes. Whether you’re dealing with heavy crude oil or more complex feedstocks, this polysulfide is a key tool in ensuring that your catalytic systems perform at their peak.

In today’s competitive energy market, operational efficiency is key. By choosing DTBPS or TBPS, you are ensuring that your catalysts perform at their highest capacity, reduce downtime, and increase product yields, all while protecting the environment by minimizing emissions and waste.

Upgrade your catalyst sulfidation process with DTBPS or TBPS and see the difference in your refining operations. With DTBPS or TBPS, expect enhanced catalyst stability, longer service life, and superior overall performance.

#CatalystSulfidation #RefiningEfficiency #DTBPS #TBPS #PolysulfideInnovation #EnergyOptimization #Hydrocracking #CatalyticCracking #RefiningExcellence #PetrochemicalPerformance

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How a Leader Captured 80% Heptane Market Share Through Innovation and Customer-Centric Solutions

Abstract
Junyuan Petroleum Group has emerged as the undisputed leader in the global heptane market, commanding an 80% share driven by its relentless focus on product purity, flexible packaging solutions, and unparalleled logistics infrastructure. This article explores how the company outperforms competitors to become the preferred partner for industries like pharmaceuticals, adhesives, and specialty chemicals. Key factors include its ISO-certified production, steel drum and ISO tank packaging versatility, and a global distribution network that ensures seamless delivery to over 50 countries.

Unrivaled Product Quality

Junyuan’s heptane is renowned for its ultra-high purity (99.9%+), meeting stringent standards such as USP, EP, and ASTM. Its proprietary distillation technology eliminates impurities like aromatic hydrocarbons and sulfur compounds, making it ideal for sensitive applications:

• Pharmaceuticals: Critical for drug formulation and solvent extraction, with zero tolerance for contaminants.
• Electronics Cleaning: Leaves no residue, ensuring precision in semiconductor manufacturing.
• Polymerization: Delivers consistent reactivity for high-performance polymer production.

The company’s dedicated QC labs and real-time batch tracking system guarantee compliance with client-specific requirements, earning trust from Fortune 500 manufacturers.

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Packaging Flexibility: Steel Drums & ISO Tanks

Junyuan caters to diverse client needs with two optimized packaging options:

1. Steel Drums (137 kg): Ideal for small-batch orders, ensuring airtight storage and safe handling.
2. ISO Tanks (20,000+ liters): Cost-effective for bulk shipments, reducing waste and logistics costs.

Both options adhere to UN safety standards and include tamper-proof seals, minimizing risks during transit.

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Global Logistics Mastery

Junyuan’s dominance stems from its integrated supply chain:

• Strategic Hubs: Warehouses in Rotterdam, Houston, Singapore, and Dubai enable rapid regional delivery.
• Pharma-Grade Logistics: Temperature-controlled ISO tanks and GDP-compliant protocols for pharmaceutical clients.
• End-to-End Tracking: Digital platforms provide real-time shipment visibility, from factory to end-user.

This infrastructure slashes lead times to 5-35 days globally, even for urgent orders.

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Sticky Customers in the Pharmaceutical Sector

Junyuan’s 80% market share is anchored by long-term partnerships with top-tier pharmaceutical companies. Key drivers include:

• Regulatory Expertise: Full documentation support for FDA, REACH, and ICH guidelines.
• Customized Blends: Tailored heptane grades for tablet coating, API synthesis, and vaccine production.
• 24/7 Technical Support: On-call chemists assist with formulation challenges and process optimization.

A leading European pharma giant recently credited Junyuan’s heptane for cutting its production downtime by 30%, underscoring the value of reliability.

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Why Junyuan Stands Out

• Market Leadership: 80% global heptane share, validated by independent industry reports.
• Sustainability: Closed-loop recycling programs for steel drums and ISO tanks.
• Agility: Capacity to scale production by 200% within 90 days to meet surges in demand.

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Next Steps for Buyers

1. Request a Purity Audit: Validate Junyuan’s heptane against your lab specifications.
2. Optimize Costs: Leverage bulk ISO tank discounts for annual contracts.
3. Engage Regulatory Teams: Collaborate early to streamline compliance for niche applications.

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Junyuan Petroleum Group’s blend of quality, innovation, and logistics precision has redefined industry benchmarks, making it the go-to heptane supplier for mission-critical applications worldwide.

Transforming Catalyst Activation in Refineries with Safer Alternatives

Abstract: Sulfiding, the process of activating hydroprocessing catalysts in refineries, traditionally relied on dimethyl disulfide (DMDS). While effective, DMDS presents safety, handling, and environmental challenges. Di-tert-butyl polysulfide (DTBPS) emerges as a superior alternative, offering increased safety due to a higher flashpoint, a less offensive odor, nonregulated transportation, and reduced SOx emissions. Pilot studies confirm that DTBPS performs on par with DMDS while enabling quicker sulfiding at lower temperatures. Despite minor differences in sulfur content, DTBPS is endorsed by catalyst manufacturers as a safer, efficient, and environmentally favorable sulfiding agent.

Keywords: Sulfiding, hydroprocessing catalysts, DTBPS, DMDS, refinery safety, SOx emissions, catalyst activation.

This article explores the key factors in the sulfiding process of hydroprocessing catalysts and their impact on catalyst performance. By analyzing the types of sulfiding agents, sulfiding conditions (e.g., temperature, pressure, time), and catalyst support properties, effective strategies for optimizing the sulfiding process are proposed. The article highlights Di-tert-butyl Polysulfide (DTBPS) as a novel sulfiding agent, which offers superior safety, lower odor, and easier transportation and storage compared to the traditional Dimethyl Disulfide (DMDS). Laboratory and industrial-scale studies demonstrate that DTBPS performs equally to DMDS in terms of sulfiding efficiency and catalyst performance, while significantly reducing environmental risks and operational costs. The article concludes with future research directions, emphasizing the need for further advancements in sulfiding technology driven by both environmental and economic benefits.

Key Terms:

• Hydroprocessing catalysts
• Sulfiding process
• Di-tert-butyl Polysulfide (DTBPS)
• Dimethyl Disulfide (DMDS)
• Catalyst performance
• Optimization strategies
• Industrial applications
• Environmental technology

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Main Content

1. Importance of the Sulfiding Process

Hydroprocessing catalysts are widely used in refineries for hydrotreating, hydrodesulfurization, and hydrocracking units. Initially, catalysts are in an inert/inactive state, with active metals in oxide form. Sulfiding activates the catalyst by reacting the active metals with hydrogen sulfide, which is typically generated in situ from sulfur in the feedstock or provided by a sulfiding agent.

2. Limitations of Traditional Sulfiding Agent DMDS

Dimethyl Disulfide (DMDS) has been widely used as a sulfiding agent for many years, but it has several drawbacks:

• Safety Hazards: DMDS has a low flash point (16°C), posing fire risks during transportation, storage, and use.
• Odor Issues: DMDS has a strong, unpleasant odor, which can be a nuisance to workers and surrounding communities.
• Transportation Restrictions: Due to its low flash point, DMDS is subject to strict transportation regulations, potentially leading to additional demurrage charges.
• Environmental Emissions: The methane produced during DMDS decomposition dilutes hydrogen in the recycle gas, increasing sulfur dioxide (SOₓ) emissions.

3. Advantages of the New Sulfiding Agent DTBPS

Di-tert-butyl Polysulfide (DTBPS) is a novel sulfiding agent with the following advantages:

• Enhanced Safety: DTBPS has a high flash point (100°C), significantly reducing fire risks.
• Low Odor: DTBPS has a mild, diesel-like odor, making it more tolerable for workers and communities.
• Easier Transportation: Classified as non-hazardous, DTBPS offers greater flexibility in transportation and storage.
• Environmental Benefits: The isobutane byproduct from DTBPS decomposition does not dilute hydrogen in the recycle gas, reducing SOₓ emissions.

4. Pilot-Plant and Industrial Applications

Pilot-plant studies confirmed that DTBPS performs equally to DMDS in terms of sulfiding efficiency and catalyst performance. DTBPS decomposes at a lower temperature (160°C) compared to DMDS (200°C), allowing sulfiding to begin at lower catalyst bed temperatures. This reduces the risk of catalyst damage due to high-temperature reduction and shortens the sulfiding process time.

5. Limitations of DTBPS

DTBPS has a slightly lower sulfur content (56%) compared to DMDS (68%), requiring a slightly higher dosage to achieve the same sulfiding effect. However, this drawback is outweighed by its safety, environmental benefits, and operational convenience.

6. Industry Acceptance and Future Outlook

DTBPS has been tested and approved by major catalyst manufacturers worldwide as a safe and efficient alternative to DMDS. As environmental regulations become stricter, DTBPS is expected to gain broader adoption in the refining industry.

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Tables and Figures

• Table 1: Comparison of DMDS and DTBPS Sulfiding Methods
• DTBPS:
• Low odor and high flashpoint (212°F/100°C): Safer to handle with reduced fire risk, allowing for nonregulated transport.
• Low decomposition temperature (320°F/160°C): Provides a better safety margin for catalyst reduction.
• Industry acceptance: Rapidly gaining global market share and approved by catalyst manufacturers.
• Efficiency: Sulfiding process completes in 1-2 hours, which is faster than DMDS.
• DMDS:
• Strong odor: Described as “decaying cabbage,” making it unpleasant for workers and communities.
• Low flashpoint (61°F/16°C): Requires Department of Transportation (DOT)-regulated transport and specialized handling.
• Moderate decomposition temperature (392°F/200°C): Standard for current industry processes.
• Industry standard: Widely recognized and approved, but the sulfiding process takes 18-36 hours, much longer compared to DTBPS.
• Table 2: Comparison of Chemical and Physical Properties of DMDS and DTBPS
• DTBPS is a safer and more efficient alternative to DMDS in catalyst sulfiding. It offers significant advantages such as:
• Safety: A higher flashpoint and lower decomposition temperature make it safer and reduce the risks of fire.
• Environmental Impact: DTBPS minimizes SOx emissions due to its byproduct (isobutane) and prevents hydrogen dilution in the recycle gas.
• Convenience: Nonregulated transportation simplifies logistics, while low odor improves workplace conditions.
• The trade-off for DTBPS is its lower sulfur content (56% vs. DMDS’s 68%), requiring slightly more volume to achieve equivalent sulfiding.
• Pilot studies confirm DTBPS matches DMDS in catalytic activity and delivers added benefits like shorter sulfiding times (1-2 hours vs. 18-36 hours). Globally, catalyst manufacturers recognize DTBPS as an effective alternative. Overall, DTBPS’s properties make it the preferred choice for safer, faster, and environmentally favorable refinery operations.
• Additional Insights: Hydrodesulfurization Efficiency of Catalysts Sulfided with DTBPS and DMDS
• Hydrocarbon Byproducts:
  • DMDS produces methane as its hydrocarbon byproduct during sulfiding. This methane tends to accumulate in the recycle gas stream, diluting hydrogen and lowering the hydrogen partial pressure. This often requires gas purging and hydrogen makeup, leading to SOx emissions and wasted resources.
  • In contrast, DBPS generates isobutane, which exits with liquid hydrocarbons from the high-pressure separator. This prevents hydrogen dilution and reduces SOx emissions, making it a more environmentally responsible choice.
• Operational Efficiency:
  • The lower decomposition temperature of DBPS (320°F/160°C) allows sulfiding to begin at a lower catalyst bed temperature, which reduces the risks associated with catalyst overheating (exotherms). This also shortens the sulfiding time, leading to cost savings by minimizing reactor downtime.
• Global Adoption:
  • Catalyst manufacturers worldwide endorse DBPS as a viable alternative to DMDS. Its ease of use, safety advantages, and comparable effectiveness make it a promising choice for refiners aiming to optimize operations.
• Minor Considerations:
  • The slightly lower sulfur content of DBPS (54% versus 68% for DMDS) requires a marginally higher volume of DBPS to achieve the same level of catalyst sulfiding. However, this minor inconvenience is outweighed by the safety, handling, and environmental benefits.
• Conclusion:
• DBPS stands out as a safer, more environmentally friendly, and efficient alternative to DMDS in the hydroprocessing catalyst sulfiding process. Its adoption reflects a move towards greener and more sustainable practices in the refining industry. While it does require a marginally larger dosage, the overall benefits—ranging from reduced SOx emissions to simplified handling—make it a compelling choice for modern refineries.

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Conclusion

DTBPS, as a novel sulfiding agent, offers significant advantages in safety, environmental performance, and operational convenience, making it an ideal replacement for traditional DMDS. Despite its slightly lower sulfur content, its overall benefits make it the preferred choice for optimizing sulfiding processes in refineries.