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Vessel Charging

The solids addition process for chemical reactors can be a complicated and very dangerous process. Due to the presence of solvents, there is often a potentially explosive environment within vessels. The addition of dry solids introduces the risk of static discharge and entrained oxygen which completes the highly dangerous fire triangle and could lead to a major deflagration event at the manway. EHS offers many options for safe solids addition into your chemical reactor.

The EHS Material Transfer Station [MTS], with the Vessel Charging package, is an easy to use workstation with integrated weighing and a sophisticated control package that allows for safe and efficient solids transfer into a process vessel.

This system allows for multiple drum transfers into a process tank while keeping operator exposure levels to less than 1 µg/m³ for the duration of the process. The MTS utilizes the central vacuum source on the vessel and does not require a separate powder transfer system.

Product is transferred through a small port on the vessel (manway remaining closed) to maintain an inert vessel and ensure operator safety. The PID control system reduces oxygen concentrations in the isolator below 1% for the powder transfer process while maintaining a high-containment isolator condition. Integrated load cells are used to weigh hopper contents while controls prevent material transfer if the weight in the hopper is over the target weight.

This system uses the EHS proprietary AMPP (Actively Managed Plug Prevention) technology to optimize product conveyance throughput. CIP spray nozzles are used to clean the interior of the isolator and vacuum hopper.


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<1μg/m³
Containment

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<1%
Oxygen Concentration in Vessel

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3-5 minutes per drum
Cycle Time


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Material Transfer Station

The EHS Material Transfer Station is designed to help operators transfer material out of drums using a small footprint workstation. Safety, containment, and productivity are all addressed with this simple to use machine.

Safety: Position drums directly across from the operator to optimize ergonomics. For potentially explosive products, the isolator can be flooded with nitrogen throughout the material handling process.

Containment: Material is transferred in a completely closed system to achieve containment levels of <1 µg/m³.

Productivity: Position drums directly above the receiving container for an easy transfer of powders. Cleanup time is minimized by using single-use glovebags or a CIP system for a rigid glovebox.



Vacuum Conveyance System material transfer EHS Solutions

Vacuum Conveyance System

The EHS Vacuum Conveyance System [VCS] provides a safe, efficient, and contained means for transferring material using a vacuum source instead of relying on gravity. The VCS is ideal for transferring highly toxic or potentially explosive powders that are present in the pharmaceutical, food, and chemical industries. Safety, containment, and productivity are all addressed with this simple to use machine.



Drum Mover

EHS Drum Movers are designed to engage with drums of all types (fiber, plastic, and steel). The Drum Mover allows for the lifting and transportation of heavy drums anywhere within a manufacturing facility. There are various attachments that can be easily interchanged on the Drum Mover. The Chime Gripper design has a clamp that uses the drum weight to securely tighten against the drum chime. The Side Gripper design uses grippers that close securely on the drum before lifting. For effortless push-pull motions, a battery powered wheel drive can be integrated for complete powder handling.



EHS Solutions - Containment Equipment - Air Filtration Unit

Air Filtration Unit

EHS offers a complete line of portable and stationary Air Filtration Units that provide a local HEPA filtration device to serve Local Exhaust Ventilation (LEV) systems. The EHS Air Filtration Unit is designed to meet the utility requirements of multiple EHS Ventilation Sleeves; it is also a good fit for any application with similar extraction utility requirements.

Each system is configured to comply with international electrical standards. The GMP compliant design features a small footprint and noise rating of 76 dBa. Safe Change filters and activated carbon filters for VOC’s are also available.

EHS Air Filtration Units are a cost effective alternative to upgrading house exhaust systems that have become over utilized or where there is a need to prevent the contamination of the house exhaust system ducting.



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