Ultracat Catalytic Filter System

Tri-Mer catalytic high temperature filters remove particulate (PM), NOx, SO2, HCl, and other acid gases treated at over 90% removal.
The filters operate up to 899°C.

Tri-Mer high temperature filters are chemically inert and corrosion-resistant, as would be expected from ceramic materials.


High temperature filters are manufactured in two varieties: standard Non-Catalyst Ceramic Filters and Ceramic Catalyst Filters. The catalyst filter is identical to the standard filter, except that it has nanobits of SCR catalyst embedded in the filter walls for NOx removal, Organic HAPs, CO, and dioxin destruction.


  • NOx destruction over 90%. In addition to treating PM and acid gases, the catalyst filters have nanobits of NOx catalyst embedded throughout the filter walls. These filters provide effective NOx destruction using integrated aqua ammonia injection. Replaces conventional SCR.
  • NOx destruction takes place at lower temperatures than standard SCR big-block reactors that require 343°C. Ceramic Catalyst filters show good destruction as low as 177°C and over 90% at 204°C for most applications. Equally effective at higher temperatures up to 399°C.
  • Particulate (PM) is removed to ultralow levels (<2 mg/Nm3, 0.001 grains/dscf) at temperatures up to 899°C. Ceramic filters are highly effective on submicron PM: equal to fabric bags and better than ESP. The UltraCat Catalytic Filter System is an excellent replacement for spray dryer ESP.
  • SO2, SO3, HCl, HF, and other acid gases treated at over 90% removal using integrated dry sorbent injection.
  • Dioxins (up to 99%) and mercury can be removed within certain temperature ranges.
  • Tri-Mer Catalytic High Temperature Filter Systems are a cost-effective solution to many pollution control issues.


Multiple Plenums for Projects of Any Size

  • Multiple plenums provide built-in redundancy for high up-time performance. No “ESP bottleneck.”
  • If a plenum is taken off-line for service, the other plenums treat the entire flow at a temporary higher pressure with no change in performance.

Ceramic filter tube wall is 3/4″ thick with catalyst embedded throughout the wall.

Filters are self-supporting without filter cages, and have a service life of 5 to 10 years

Pollutants we can remove:

  • Particulate (PM 10, PM 2.5, PM 1.0)
  • NOx
  • SOx (SO2, SO3)
  • HCl, HF
  • Metals (Selenium, Arsenic …)

  • Mercury
  • Hexavalent Chrome
  • Dioxins / Furans
  • Selective VOC (Cement O-HAPS)
  • Add-on CO module available

Contact us for any information