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Number: 54

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  • Separator technology reduces refinery operating costs and downtime

    A US refining company contacted us to discuss a separation problem in the feed to an alkylation process. Caustic entrainment from their selective hydrogenation unit was poisoning the hydrofluoric acid catalyst in the alkylation unit. The continuous phase feed to the alkylation unit consisted of ~180m3/hr of mixed C4 hydrocarbons, mainly butanes and butylenes, with varying levels of 10 – 20% caustic solution entrained as a dispersed aqueous phase. Sulzer was commissioned ...

  • Structured grid packing

    Structured grid packings have traditionally been used for high severity services. Grids have a high open area, relatively low surface area, and a robust construction to withstand process upsets and to resist fouling. There are two main types of grids, categorized by structure - conventional grid and corrugated, high-efficiency grid. Developed first, conventional grids have a structure made from vertical members and angled flaps. The simple construct is fouling resistant, but has ...

  • Structured packings for distillation, absorption and reactive distillation

    This brochure was reviewed and supplemented recently. It therefore provides a complete, up‑to‑date overview of packings available from Sulzer Chemtech. Also included is a summary covering the essential column internals and our technical services. More detailed product information, you will find in the following brochures: - Internals for Packed Columns The brochure contains a comprehensive summary of the selection of internals supplied by Sulzer Chemtech, and a description ...

  • Suspension crystallization technology

    Suspension crystallization technology completes Sulzer‘s existing portfolio of melt crystallization technology consisting of falling film and static crystallization. Based upon careful evaluation of the technologies, our clients can be sure to receive the ideal process for their separation challenge, be it one of our crystallization technologies or even a hybrid process. Suspension crystallization is a highly selective, low energy consuming and solvent-free separation ...

  • Three cost effective ways to strengthen trays against uplift

    Several common operating conditions cause tray damage, including high liquid levels, free water flashing at the bottom of the column, and excessive pressure drop. The result can be an expensive shutdown causing lost production and profit. Increasing tray thickness can be a first approach for strengthening the tray, but this can increase the material cost of the trays by 50% or more. Sulzer commonly uses three simple cost effective alternatives to increase tray strength in new ...

  • Tracerco Diagnostics™

    Providing real time measurement technologies to assist with critical decision making. Tracerco Scanning Services TRU-SCAN® Application. Do you have problems with the operation of your stripper/absorber or fractionation tower? Is this limiting production? Do you want to reduce your operating costs? Do you want to reduce your shutdown time? Tracerco’s Tru-Scan™ technology, utilizing FrothView™, is used to evaluate the mechanical integrity and hydraulic performance ...

  • Tray designs for extreme fouling applications

    Today refiners experience a lot of problems with processing of opportunity or heavy crudes. Such crudes have very high sulfur content and require the addition of amine scavengers before desalting. These amines decompose in the heater and create ammonium chlorides in the presence of water in the top of the crude tower. Dissolved salts start to precipitate and crystallize when the solution becomes saturated and water is vaporized. Such fouling starts to grow below and above trays ...

  • Understanding design and performance of high performance structured packing

    High performance structured packings have been on the market for around 10 years. They continue to gain market share because of their high capacity and excellent efficiency. This is especially true in vacuum tower applications where pressure drop is critical. High performance packings can yield substantial savings in capital and operating costs with increased capacity and lower flash zone pressure and temperature. Packing Design Fundamentals One of the fundamental characteristics ...

  • VFF - your expert for maritime exhaust gas treatment

    For decades, Vereinigte Füllkörper-Fabriken (VFF) has successfully supplied tower packings and internals made of a wide variety of materials worldwide for a wide range of applications in the chemical, petrochemical and pharmaceutical industries, in environmental technology, plant construction and other areas. Packing elements for maritime exhaust gas purification Energy-saving measures are becoming increasingly important in the field of exhaust-gas purification. VFF supports ...

  • VFF Products

    VFF supplies a wealth of column-related products and consultation services for the most diverse applications e.g.: • Absorption • Desorption • Distillation • Extraction • Drying • Cooling • Humidification • Water treatment • Droplet separation (demisters) • Desalination • Heterogeneous catalyst reactors • and much more

  • VFF-NetBall®: High-performance in the shape of a ball

    The VFF-NetBall® a plastic random packing  has been devised by VFF's research and development division and sets new standards in absorption and desorption. Its favourable flow profile, combined with a high specific surface, offers top mass-transfer properties with an extremely high hydraulic load capacity and minimum pressure drop. Its specially designed net structure guarantees high mechanical stability and results in an optimum bed constitution.

  • VFF-Power-Pak®

    The VFF Power-Pak®, a VFF-patent, is a completely newly designed high-performance tower packing in ceramic with a similar profile to structured packings but which retains all the many benefits of random packings. Its innovative shape developed by VFF leads to an extremely low pressure drop with an impressive mass transfer! VFF Power-Pak® is a high-performance random packing designed for maximum capacity. Compared with a conventional random packing with an equivalent rated value ...

  • VFF-Twin-Pak®

    Extremely low pressure drop with best mass transfer. The VFF-Twin-Pak®, a VFF-patent, is an entirely newly developed high-performance metal tower packing with a profile that comes close to the structured packings, while not doing without the numerous advantages of a tower packing. Its form combines an extremely low pressure drop with a convincing mass transfer! The VFF-Twin-Pak® is a high-performance tower packing, predestined for highest capacity. The mass transfer of the ...

  • VSP®-V High performance tower packing with lowest pressure drop

    The VSP-V is the updated version of VFF’s world wide known random packing VSP. The VSP-V offers high performance in plastic with top mass transfer and lowest pressure drop and is easy to handle during column loading and emptying.