Case Study
Objectives and Scope of the Case Study
Semaphore Reduces Dust in Bulk Handling
The bumper grain harvest in South Australia has lead to record throughput for Semaphore Containers in South Australia. With more loading activities there is more dust being generated. Being a proactive company Semaphore engaged Blue Water Misting to reduce dust in their operations.
Blue Water Misting (BWM) analyzed the site in consultation with customer identifying the sources of dust. Then purpose designed a system the to help then reduce dust in the following areas.
- Truck receivals from the farm to silo
- Truck load out to the ship loader
- Container stuffing
- Hopper loading
"We engaged BWM to install dry fog dust suppression at several points in our operation. The result has been a significant reduction in dust emissions"
Michael Raidis Manager Sempahore Containers
Solutions for Dust-NOT added Moisture
Blue Water Misting worked with the client to determine the sources of dust and prepare a solution for the fugitive dust emissions. BWM placed a large power pack centrally on site then used specialist nozzles to produce a DRY FOG that adds less than 0.25% moisture to product.
Semaphore Reduces Dust in Bulk Handling
Solution 1 Truck Receival
The existing tipping receival pit to offload trucks to fill silos resulted in dust emissions to the air and local pollution. BWM engineers built a two pronged solution to the problem firstly a physical screen around the inlet and secondly dry fog bars mounted to the screen.
Grain Receival Dust Reduction
Solution 2 Truck Loading
Once a vessel is alongside the grain needs to be transported to the quay for loading on a ship. Previously grain was discharged from silos and storage by belt conveyor into trailers creating dust. BWM engineers identified the source of the dust and fitted dry fog lances on a spray ring to the spout.
Solution 3 Hopper loading
When feeding material from storage the client used a front end loader to fill a hopper which generates a lot of dust. BWM fitted its dry fog spray bars to the hopper inlet reducing dust from operation to zero.
Grain Receival Dust Reduction
Solution 4 Container stuffing
An important part of the clients operation is container stuffing of grain for export in containers. This is done using a belt conveyor into the container with one door closed and the other blocked with a plywood false wall. This resulted in dust emissions as can be seen below.
BWM fitted dry fog spray bars to the loading station at an angle to best impact the dust particles and significantly reduce the dust emissions from the operation.
Ship Loader - Case Study
Zinc and Lead Loading
An Australian client loading close to residential area selected BWM to provide Dry Fog system for ship Loading.The system was cost effective & and simple to set up on ships hatch. The system was able to suppress all fugitive dust from the loading adding less than 0.25% moisture.
BWM Reduces Dust in Grain Shed
An Australian blending and grain distributing company had a growing business but a rapidly growing dust problem. Concerned for customer and employee health they asked BWM for a solution to reduce dust.
BWM developed a dual pronged scientific solution by fitting its dry fog lances above high activity and fitting is containerized extraction system to the outside of the shed.
Dusty bending operation
Extraction
The BWM containerised extraction system was fitted outside building. Creating a negative pressure to remove dust but importantly keep fro drifting out of door during truck movement
Extraction system
Energy being added to grain=Dust
Scientific Approach
BWM analyzed the dust generation sources where energy was added and fitted their dry fog lances above these high activity areas. The tiny dry fog particles collide with dust dropping it from the air
