Introducing UltraTemp Hot Gas Filtration
for PM, SOx, NOx

• Tri-Mer UltraTemp Filtration System features a new generation
  of ceramic filters for hot gas filtration of particulate matter (PM)

• SO2 option: up to 95% with dry scrubbing sorbent injection
  for the removal of acid gases

• NOx option: removal up to 95% available

Tri-Mer Corporation, a developer of advanced technologies for the control of fine particulate
and pollutant gases, has introduced “UltraTemp Filtration,” a hot gas filtration system that
captures particulate to extremely low levels, including submicron and ultrafine PM. For acid
gas removal, the system incorporates dry sorbent injection for very efficient dry scrubbing of
SO2 , HCl, and other acid gases. Another option is utilization of filter elements with embedded
SCR catalyst, so that urea/ammonia injection upstream of the filter housing yields a
high degree of NOx control. See below for details.

Small UltraTemp module incorporating new ceramic filter tubes.
Inset: Ceramic filter tubes in the UltraTemp Filtration system for hot gas filtration.

The UltraTemp Hot Gas Filtration System
Offers These Primary Benefits:

• Maximum operating temperature at 1650°F
• For particulate matter (PM) removal only

• Typical operating temperature between 350°F - 1000°F
• For optional removal of SO2 and/or NOx
• PM + SO2 / PM + NOx / PM + SO2 + NOx (see details below)

• High collection efficiency
• Typical results are below 0.001 grain/dscf  ( 2 mg/Nm3)
• Many results are less than 0.0005 grain/dscf   (1 mg/nm3)
• Can accept heavy loadings, even above 1 grain/ dscf  (2288 mg/Nm3)

• Corrosion resistance
  • The ceramic filters are almost completely chemically inert and
    highly corrosion-resistant

1. Diameter of median size particle 2. 1 mg/Nm3 equals 2288 grains/dry standard cubic foot.

Hot Gas Filtration: A Short History

The heart of the UltraTemp Hot Gas Filtration system is a new generation of ceramic filter tubes.
Earlier generations of ceramic filters – sometimes called “candle” filters – were manufactured
from high-density granular powders similar to common ceramic products. While effective,
they were brittle, with low thermal shock resistance, and were prone to cracking and breakage
from thermal shock. Surface porosity also made cleaning of the filters difficult because of their
tendency to “blind.”

Now, with recent advances in ceramic technology, these issues have been overcome.
The filter tubes in the Tri-Mer UltraTemp Filtration system are manufactured from a new
generation of low-density ceramic fibers that provide exceptionally high resistance to
thermal shock. This makes the filters very ductile and resistant to crack formation.

Micrograph of filter elements composition.

Characteristics of the fibrous ceramic filter elements.

Other unique properties of the fibers give the UltraTemp filters an exceptional ability to capture
fine particulate at the surface, without blinding. This makes them easy to clean using standard
pulse-jet techniques. Being fibrous, rather than granular, the filter elements are also lightweight,
and have a low resistance to flow, which minimizes the number of elements required for a
given application.

Contrast between types of ceramic filter elements. UltraTemp low-density filter tubes reflect
a new generation of ceramic technology.

Dry Scrubbing with Sorbent Injection for Acid Gas Removal

The Tri-Mer UltraTemp Hot Gas Filtration system has an option for dry injection of calcium
or sodium-based powered sorbents upstream of the filtration. The system easily captures
the additional particulate.

• SO2 removal typically 80% or better
• As high as 97%, depending on application

• HCl removal typically 95% or better
  • As high as 99%, depending on application

Sorbent injection prior to UltraTemp Filtration system for acid gas removal.

NOx Removal Options

If the need is NOx, VOC, or dioxin removal, UltraTemp filter elements are available with
catalysts embedded in the filters themselves. For NOx, urea is injected upstream of the filters.
NOx removal in these systems is typically 80-95%. VOC oxidation and dioxin removal are
also both exceptionally high. UltraTemp Filtration can incorporate both sorbent injection and
catalyst reduction in a single system. Acid gases, such as SO2 , and NOx can be simultaneously
removed in the same system as PM.

Structure of ceramic filter element and micrograph of embedded catalyst

UltraTemp Filtration system for control of particulate, SO2 and NOx.

A typical container glass furnace application that incorporates SO2 and NOx control,
and particulate capture. (Inlet PM loading includes dry sorbent).

UltraTemp Operation

Tri-Mer’s UltraTemp Hot Gas Filtration system uses a baghouse configuration with a reverse
pulse-jet cleaning action. The filters are back-flushed with air, inert gas, syngas, or other
appropriate gases. It has a reliable sealing mechanism that is easy to access, and the design
has been engineered for easy installation and maintenance. Filter elements are manufactured
in various sizes, the largest of which is ten feet long and six inches in diameter, including an
integral mounting flange.

Reverse pulse jet cleaning mechanism for the filter tubes. Filter tube wall
7/8" thick. NOx control option includes catalyst embedded in tube wall.

Filter element housing module of the Tri-Mer UltraTemp Filtration system.

The UltraTemp Filtration system is an efficient, proven alternative for hot gas filtration.
With over 400 applications worldwide, it is now commercially available throughout the US,
with full technical and start-up support.

Selected Applications

• Syngas cleaning
• Glass furnaces
• Waste Incineration
• Waste pyrolysis
• ICI boiler MACT compliance for coal, biomass, wood
• Metal smelting, mineral processing
• Chemical production
• Many specialized high temperature applications

Waste incineration facility incorporating new ceramic filter elements.

More Applications

Air Pollution Control

• Cement production
• Medical waste
• Soil cleaning
• Foundry processes
• Fluidized beds
• Energy production
• Fire testing

Product Collection / Recovery

• Titanium dioxide production
• Fumed silica production
• Carbon black production
• Catalyst manufacture
• Platinum smelting
• Metal powder production
• Activated carbon production

Tri-Mer Corporation, a technology leader in air pollution control, is the exclusive
manufacturer of the UltraTemp Filtration system, and provides turnkey engineering,
manufacturing, installation, and service through its Michigan facility.

For more information, please contact:

Kevin Moss
Tri-Mer Business Development Director
Advanced Technologies
Office/cell: (801) 294-5422
kevin.moss@tri-mer.com

Have a potential application? Contact Tri-Mer

Tri-Mer: More Choices in Air Pollution Control

HOME l BUY ON-LINE l INTERNET SPECIAL
SELECT BY TRADE NAME l SELECT BY NEED
LITERATURE l PRESS RELEASES l CONTACT US

Tri-Mer Corporation
1400 Monroe Street
P.O. Box 730
Owosso, MI  48867; USA
Phone:  (989) 723-7838
Fax:  (989) 723-7844
salesdpt@tri-mer.com

© Copyright 2010 Tri-Mer Corporation
Website designed by Marketing Services Inc.