Unifrax Ltd Hot Gas Filters

In 2010, Unifrax acquired Brightcross Insulation Ltd and with the acquisition came the previous sales history and knowledge of 15 years of manufacturing successful Hot Gas Filters.

100’s of companies have benefited from and continue to benefit from using these ceramic filter elements. The key benefits include –

Self-supporting elements:

Unlike traditional bag filters which require cages.

Highly efficient emissions reduction:

Elements themselves allow virtually 100% reduction in particulate emissions and through the use of sorbent injection systems enable the same reductions in acid gases such as HCl, HF and SO₂ with Powdered Activated Carbon (PAC) injection providing control of Dioxin/Furan and Heavy Metal emissions.

Ability to operate over a wide range of temperatures and operating conditions:

Temperature resistance up to 1,260^oC, insensitivity to sparks, excellent thermal shock resistance and non-flammability removes the risk of damage and fire associated with the use of conventional filter media at high temperatures. High temperature operation increases the efficiency of certain sorbents and also enables operation above the de-Novo synthesis temperature window for Dioxins/Furans. Elements are also highly resistant to corrosive environments.

Strict Process Control:

Excellent dimensional accuracy through full machining of candles and controlled uniform permeability with minimal pressure drop allows both highly efficient filtration efficiency and optimal reverse jet clean-down performance.

Long Life Elements:

Installations with element lives of over 5 years are regularly achieved.

Large Number of Elements in stock:

Allows any customer requirements (regardless of magnitude) to be quickly and easily met.

Lower power consumption and simpler operation:

Final filter systems do not require cyclones, dilution air, spark arrestment or other ancillary equipment.

In-house Pollution Control Expertise:

Advice and support available in all matters relating to air pollution control equipment design, specification and commissioning as well as environmental legislation.

By providing such benefits, over 150,000 elements worldwide have been utilised in a diverse range of successful applications, including product recovery, incineration and both primary and secondary metals smelting. Such a reputation for providing durable, high performance filters elements has also led to an ever increasing utilization in the waste to energy arena – particularly in the innovative fields of gasification and pyrolysis. Some of these applications are described in further detail below.