The process of catalyst sulfiding is fundamental to the efficient operation of many refinery units, particularly hydrotreating and hydrocracking processes. Historically, Dimethyl Disulfide (DMDS) has been the go-to sulfiding agent. However, the industry is increasingly looking towards safer, more environmentally friendly, and equally effective alternatives. Di-tert-butyl Polysulfide (DTBPS), supplied by trusted chemical manufacturers, presents a compelling case as a superior choice for many sulfiding applications.

DMDS is a widely used compound due to its efficacy in presulfiding catalysts. It effectively converts metal oxides into their active sulfide forms, which are crucial for removing sulfur and nitrogen from hydrocarbon feedstocks. However, DMDS comes with notable drawbacks. Its strong, pervasive odor, high volatility, and flammability pose significant handling and safety challenges for refinery personnel and operations. These characteristics necessitate rigorous safety protocols and specialized equipment, contributing to higher operational costs and environmental concerns.

In contrast, Di-tert-butyl Polysulfide (DTBPS), known by trade names such as TBPS 454, offers a markedly improved profile. Our DTBPS, manufactured to high purity standards, boasts a much lower vapor pressure and a higher flash point, rendering it non-flammable and significantly safer for transportation, storage, and injection. The low odor of DTBPS also contributes to a cleaner and safer working environment, a critical consideration for modern industrial operations. For refineries aiming to buy chemicals that align with evolving safety and environmental mandates, DTBPS is an ideal replacement for DMDS.

From a performance perspective, DTBPS competes effectively with DMDS. While DMDS has a higher sulfur content by weight, DTBPS decomposes at lower temperatures in the presence of catalysts, facilitating efficient sulfiding. Furthermore, the decomposition products of DTBPS, primarily isobutene and isobutane, are less problematic for recycle gas purity compared to the methane produced from DMDS. This can lead to a more stable and efficient sulfiding process. As a chemical supplier, we provide detailed technical data to help you assess these benefits for your specific refinery needs.

When considering a switch from DMDS to DTBPS, it's important to work with a reliable supplier who can provide consistent quality and technical support. We offer Di-tert-butyl Polysulfide in bulk quantities, ensuring a stable supply chain for your refinery operations. By choosing our DTBPS, you are opting for a solution that enhances catalyst performance, improves operational safety, and contributes to a more sustainable industrial practice. If your organization is looking to buy or learn more about the benefits of DTBPS as a sulfiding agent, we encourage you to contact us for a quote and consultation.