Bulk Bag Unloader System from National Bulk Equipment Shows How a 5-station Design Safely Discharges 12 Million Pounds-per-Year of Combustible Ingredients

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Bulk Bag Unloader System from National Bulk Equipment, Inc. Uses a 5-station Design That Combines High-capacity Structural Construction with a Centralized Controls and Automation Architecture to Safely and Accurately Supply to Downstream Process Operations a Total of 12 million Pounds-per-Year of Five, Combustible Input Ingredients.

This bulk bag unloader system combines 5, independent bulk bag dischargers, using integrated controls and automation designed and built by NBE.

This new bulk bag unloader system shows how integration of five, independent bulk bag discharge stations, using a centralized controls and automation architecture and high-capacity structural construction, can protect operators while increasing total process throughput to 12 million pounds-per-year.

Each bulk bag unloader station is constructed of thick-wall, 6-inch by 4-inch carbon steel structural tubing, and heavy-gauge carbon steel plate to meet, or exceed, ANSI and ASME specifications and ensure reliable, low-maintenance operation during virtually continuous-duty operation. The controls and automation architecture of the 5-station bulk bag unloader system uses custom PLCs and HMIs engineered, programmed, and built by NBE to integrate to the process facility’s central control system, while also complying with international standards. The five different material types range in bulk density from 150kg/m3 to 630kg/m3, each with varied, non-free flowing material characteristics. An in-use bulk bag unloader video shows how each NBE bulk bag unloader uses two integrated, hydraulic massage paddles with 2,200 pounds of paddle pressure to condition the material and aid material flow. The combustible materials move from the bulk bag through the NBE E3™ enclosed bag spout interface where, with the closed-cycle dust collection system, migrant material generated during bag unloading is collected and re-introduced to the process flow. The E3™ also works during bulk bag unloading to elongate the bulk bag to further ensure complete material discharge.

Operator exposure to these materials was eliminated, and operator physical ergonomics were optimized as a result of rigorous NBE risk assessment procedures. NBE expertise in specifying, designing, and manufacturing process systems to application-appropriate codes, standards, and regulations ensured system compliance at start-up.


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