Subsurface Vacuum Additions


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 vessel. The addition of dry solids introduces risk of static discharge and entrained oxygen which completes the highly dangerous fire trial and risk of a major deflagration event at the manway. EHS offers many options for safe solids addition into your chemical reactor.

The EHS Vacuum Transfer Stationis an excellent tool for charging from both drums and bag-stock into a chemical reactor. This system utilizes the vessel vacuum system and does not require a separate vacuum powder pump. This portable system can be positioned up next to the reactor with a relatively short section of transfer hose. The short transfer hose, and utilization of the vessel vacuum source (not a pulsating powder pump) reduces the common issues of line plugging and parts cleaning.

This package utilizes the Vacuum Transfer Station which has transformed the operator experience in the drum emptying process. Various containment configurations are available for this process.

We can also provide an active nitrogen inerting system to maintain less than 8% oxygen during the solids addition process.

If you are need to QS a portion of a drum or bag, we can provide an integrated weighing option.

This application shows a subsurface addition process which may require a slightly more complex control system, but allows for improved dispersion of the powder within the vessel.


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<1μg/m³
Containment

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<8%
Oxygen Concentration in Vessel

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75 kg/minute
Product Transfer Time


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Vacuum Transfer Station

The portable EHS Vacuum Transfer Station features a small footprint that optimizes ergonomics and the functional requirements of a vacuum transfer system. The integrated Drum Tipper and vacuum hopper eliminate the ergonomic and exposure issues associated with open manway charging. The Vacuum Transfer Station can be configured to achieve containment levels of less than 1 μg/m³.

This Vacuum Transfer Station can utilize the evacuated vessel or PTS pump to carry out the powder transfer. Nitrogen inertion can also be achieved during the vacuum transfer of powders.



VTS: High Containment Configurations

The Vacuum Transfer Station can be configured to achieve containment levels of less than 1 μg/m³.



EHS Solutions - Containment Equipment - Air Filtration Unit

Air Filtration Unit (Supporting Product)

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.



Vacuum Conveyance System material transfer EHS Solutions

Vacuum Conveyance System (Supporting Product)

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.



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