Part of the Unifrax range of products is the High temperature Candle Filter Elements or Hot Gas Filter (HGF). Manufactured from both, Refractory Ceramic and low bio-persistant fibres, they are typically used in industrial applications for removing particulate, dioxins, furans and heavy metals, such as mercury from the flue gases where temperatures exceed that of traditional bag filters, or where a benefit can be made from recovering the high temperature gas stream.

January 2014 saw Unifrax launch its 3m (10ft) length Filter Element. With a 150mm dia, these elements are currently the largest available both within our range and on the market. They have a surface filtration area of 1.35 m2. Specifically designed for larger projects such as Glass applications, or simply where footprint is an issue, these lightweight filters can be manufactured in any of the Unifrax range of fibres and are designed to fit into a filter house design similar to that of a traditional bag house.

Benefits of the Hot Gas Filter Elements include
• Self-supporting and rigid, unlike traditional bag filters there is no need for cages
• Temperature resistant up to 1100oC and non-flammable
• Highly Efficient emmisions reduction -
• Controlled Uniform permeability and minimal pressure drop
• Lower Plant power consumption and simpler operation

Final filter systems do not require cyclones, dilution air, spark arrestment etc. Unifrax Hot Gas Filter Elements have been utilised worldwide in a diverse range of successful applications, including Product Recovery, Incineration and both Primary and Secondary metals smelting. 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. As a manufacturer of elements, Unifrax works closely alongside both Filter system builders and distributors to find solutions and technical support for their customer needs.