Thursday, July 17, 2008

Baghouse Filters & Filter Sock Problems

These days with the rising price of gas, food etc., we all have to try harder to make what we already have last longer rather than, as we perhaps have done in the past, simply throw it away and buy a new replacement.

However having to ‘make do’ with existing industrial plant and wear parts does have a serious downside in terms of loss of performance which in turn results in reduced plant operation – thus a loss in revenue.

One typical example of this is the filter socks/bags used in a baghouse filter. Those of us who either operate or maintain such baghouse filters know the problem only too well. The cost of replacement filter bags has increased significantly over the last few years and so there is growing pressure from the company accountants to make these filter bags last longer. Also there are the additional costs of labour and downtime to be considered.

However there is a surefire way to dramatically increase the bag life whilst at the same time preventing material build up on both the internal baghouse walls and hopper discharge. The simple solution is to install the correct model and number of Sonic Horns (also known as Acoustic Cleaners). See our baghouse cleaning page.

The Primasonics® range of Sonic Horns has been successfully employed over a wide range of filter types and sizes to offer:



  • Significant increase in filter bag life


  • Continual lower pressure drops across the bags


  • Continuous cleaning of all internal surfaces


  • Complete evacuation of the filter hopper


  • Reduction in compressed air usage

Some of our clients have experienced a doubling of bag life with all the financial saving that brings. It really does not matter which type of baghouse you have or its size; we tailor design the correct solution. For example in this photograph you can see a single cell stand alone cement pre-packing baghouse jet pulse filter which only requires a single sonic horn housed within a mounting tube and flange, high up on the hopper section.

Going to the other extreme, this second photograph shows a huge smelting plant reverse air filter which required the installation of a greater number of larger, more powerful sonic horns to both help clean the bags and prevent the twelve hoppers from blocking.

On our web site you can find a section providing Enquiry Forms, one for baghouse filter enquiries which is available either in ‘on-line’ format or as a download.

Try it on one of your baghouse filters; you can even initially take out a sonic horn rental. You will be both amazed and delighted!