Global NetworkRequest a Quote

    CONVEYING TO / FROM FILTER DRYERS

    Achieving Process Improvement through Contained, Automated Transfer
    20210727_ddps_3ML7966

    Overview 

    This case study will highlight a few projects demonstrating how our Powder Pump vacuum conveying system feeds and transfers products into and out of filter dryers.

    About

    The projects mentioned and pictured in this case study are utilized in the pharmaceutical and energy industries.

    Challenges

    Project 1:

    This project required careful attention to many design details. Some of the major features of the system that had to be included were:

    • OEB4 level containment
    • Clean-in-place (CIP) design
    • Size reduction
    • Operation under nitrogen

    With those features in mind, we needed to develop a solution to transfer an Active Pharmaceutical Ingredient (API) from the side discharge valve of a filter dryer into lined drums.

     

    Project 2:

    This project required us to handle a nano powder material which we had not done before. This meant that we had to pay careful attention to the filter media being used to separate the solids from the gas stream within the system. After determining a filter solution the main objective was to transfer a metal oxide material from the center discharge port of an older, used filter dryer into lined fiber drums.

     

    Project 3:

    This project required the transfer of a free-flowing product from drums into a filter dryer. A total of 9 units were required to transfer to various locations.

    Solutions

    Project 1:

    De Dietrich developed a system to collect and transfer material from the side discharge valve of a Nutsche filter dryer. Upon successfully transferring the material, the product would drop through our pack-off head into a drum on floor scale via a continuous liner system. This system also contained some additional features. In order to check product quality, an inline sampling device was used. With the use of several instruments, the product could be handled completely under Nitrogen, preventing exposure to air. Lastly, in order to prevent cross contamination between batches a CIP system with valve manifold was designed to enable cleaning between batches.

    Pack off station
    pack off features
    De Dietrich Powder Pump system feeding packoff station
    Packoff features: Continuous liner system, Sampling device, Spray ball, isolation bellows

     

    Project 2:

    De Dietrich designed a system consisting of a collection hopper to be mounted beneath an older center discharge filter dryer. Due to smaller batch sizes and infrequent use, the system design was mobile in order to store away when not in use. The system utilized our Powder Pump system to transfer the product into drums. A custom drum filling head was designed to allow ventilation during filling and clamping of drum liner for dust containment. The system also allowed for manual height adjustment to accommodate different drum sizes in the future.
    drum filling stand
    Drum filling stand

     

    Project 3:

    Because so many vessels needed charging, it was important that similar or same parts were used for our equipment. This helped with keeping track of spares for the equipment. De Dietrich design 9 identical units to transfer product from drums in a downflow booth up to the top head of a filter dryer on a second level. To comply with FDA standards on this project, De Dietrich used FDA approved components throughout the system design.

    20210727_ddps_3ML7966
    Powder Pump Units

    Conclusion

    De Dietrich has a long-standing reputation for creating high-quality equipment customized to meet customer requirements. We offer solutions for a wide range of applications. If you need transfer equipment to compliment your filtration or drying process, please reach out to us for more details.

    See how we can help to solve your industry
    challenges

    Contact Us

    DE DIETRICH is the world's leading provider of engineered systems, process equipment and solutions for the pharmaceutical, food, green chemistry and chemical industries.

    Resources

    Quick Links

    © 2025 De Dietrich. All rights reserved.
    Privacy Policy