Filtration

Foundry Eliminates Shutdowns and Extends Baghouse Filter Life

Foundry Eliminates Shutdowns, Extends Baghouse Filter Life, Increases ROI - Foundry Interior - Parker Industrial Gas Filtration and Generation DivisionFoundries rely on the uninterrupted operation of their dust collection systems to assure a safe and productive work environment and proper operation of equipment. When dust collection systems present maintenance issues, foundries can realize tens of thousands of dollars in inefficiencies. If the issues are unrecognized or ignored, the costs will multiply very quickly and can result in lengthy shutdowns.

This was the scenario that a large Midwestern foundry sought to avoid after enduring multiple shutdowns in a year’s time to perform filter maintenance on their Carborundum baghouse.  

 

Foundry Eliminates Shutdowns, High Differential Pressure and Extends Filter Life - Download the Case Study - Parker Industrial Gas Filtration and Generation DivisionTo learn more details about this application and industrial filtration systems for foundries, download the full case study.

 

The problem

The foundry was having significant problems with their filters being blinded by the fine particles in the gas stream. They were operating a pulse jet baghouse with seven compartments, at 250,000 ACFM. The filters that they had in operation used conventional polyester felt technology. The system had been designed at a 4.1/1 air-to-cloth ratio.

The fine particles in the dust stream were of a volume that simply overcame the filter media. This pushed the differential pressure across the baghouse to over 8 inches. The system was rendered unrecoverable and inoperable.  

Maintenance was conducted using the same filtration technology, and the blinding effect repeated itself. The filters were only able to stay in operation for six months before the end of their useful life. As a result, the filters and labor cost the foundry in excess of two hundred thousand dollars over a year’s time. 

 

The solution

Foundry Eliminates Shutdowns, High Differential Pressure and Extends Filter Life - Pleated Filter Elements - Parker Industrial Gas Filtration and Separation DivisionIn the search for a solution, the foundry turned to Parker Hannifin. Parker recommended implementing spun-bound polyester BHA® PulsePleat® filter elements (PFE) in place of the polyester felt bag and cage design that had been in use. These filter elements feature a combination of pleated high-efficiency filtration media and an inner support core that forms a one-piece element that fits directly into an existing baghouse tubesheet. The BHA®PulsePleat® filter media would offer a much better air-to-cloth ratio of 2.1/1. In addition, the pleated design of the media would not be as susceptible to the blinding effect caused by the fine particles in the gas stream.  

 

Results

The foundry implemented the PFEs in two phases, addressing the most problematic compartments first. After seeing positive results, it moved forward and converted the rest of the collector to pleated filters. The return on the total conversion expense of $285K was realized after sixteen months of efficient operation with no maintenance required.

After twenty-one months of operation, the differential pressure was operating in the 3-5 inch range. The filters had proved capable of handling the fine particle load without blinding. Even after a weeklong accidental shutdown of the cleaning system, the filters were able to have the particle loading and maintain a low differential and efficient operation. At this point, the foundry had realized a filter life three times greater with the pleated filtration in comparison to the polyester felt. 

Under the current operating conditions, the foundry is not planning to perform filter replacement maintenance for another twelve months. In this case, they will have seen a five times improvement in filter life by employing the BHA®PulsePleat® technology.

Foundry Eliminates Shutdowns, extends Baghouse Filter Life and Increases ROI

 

Conclusion

By employing the BHA®PulsePleat® technology, this foundry eliminated frequent unplanned shutdowns, increased ROI and extended the life of the filters in its pulse jet baghouse.  

To learn more about BHA dust collection products, watch this video:

 

 


Foundry Eliminates Shutdowns, High Differential Pressure and Extends Filter Life - John Deer Waterloo Case Study - Parker Industrial Gas Filtration and Generation Division

Download the full case study to learn more details about this application and industrial filtration systems for foundries.

 

 

 

 

This article was contributed by the Filtration technology team.

 

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Reducing Dust Collector Maintenance and Energy Costs in the Cement Industry | Case Study

BHA® Pleated Filter Elements Improve Dust Collection for the Foundry Industry

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