High Temperature Filtration

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When you turn up the heat, Filter Technology can handle it.

Filter Technology is experienced in high temperature applications, led by Bob Hood, one of a small number of authorities on the subject.

High temperature filtration systems is a niche that Filter Technology has developed over a thirty-plus year period. During that time, we have built and installed several systems that combine an air to air heat exchanger with the filter system.  We currently have more than 25 heat exchangers in service and 15 units on this particular application with the furnace exit temperature at 1,600° F. The air is cooled through a tube section over a common hopper, reducing the filter temperature to 350° F and taking the air volume from 34,000 to 20,000 ACFM. The collector is smaller and the system overall is smaller than dilution air into a large filter. The air to air heat exchanger can be in front of any high temperature application to reduce the size of the filter and reduce maintenance costs.

We have also designed filter systems to run at 20% moisture / dry and can build these units to use with compressed 90 PSI air or blower air at 18 – 20 PSI.

Each application is reviewed for angle of repose, can velocity and discharge loads, which is often not specified. Low velocity between bags prevents bridging and high penetration velocity to filter media.

While TFE is the ultimate in filter technology, we have often found that the low permeability of the membrane causes a problem. In such cases, we use a membrane that works well with a permeability of 20–25 rather than 4-7.

If you have a high temperature application, call Bob Hood at Filter Technology to discuss your requirements and the options to meet them.