Southern Research has an established reputation as a worldwide leader in hot-gas filtration based on our extensive accomplishments and expertise in this area, including:
Unique capabilities at Southern Research include one-of-a-kind systems for in situ particulate sampling in high-temperature, high-pressure gas streams. These systems, which were designed and built by Southern Research, have been in operation at the Power Systems Development Facility since 1996 and have operated with nearly 100% availability. (View paper)
Additional unique equipment available at Southern Research includes a custom-built system for resuspending and collecting dust particles under conditions that simulate their collection in the hot-gas filter. The system includes provisions for various cyclone configurations to adjust the particle-size distribution of the dust being collected. Using this apparatus, the dustcake drag can be evaluated over a range of particle sizes and flow conditions. (View paper)
Based on laboratory drag measurements and information from particulate sampling, Southern Research is developing and validating new procedures for the analysis of filter performance and sizing of new hot-gas filters. These procedures clearly show the critical importance of dustcake drag in determining filter performance and the required size of new filters. (View paper)
Building on our experience and expertise in hot-gas filtration, Southern Research is exploring various concepts for multi-pollutant control based on the use of hot-gas filters. Two such concepts are illustrated below. In these systems, various sorbents are used to remove sulfur species and trace metals. The sorbents form a reactive cake on the filter elements, which also contain catalysts for cracking tars and ammonia. This type of system allows the simultaneous removal of particulates, sulfur species, trace metals, ammonia, and tar in a single vessel. In addition, the system may be coupled directly or indirectly to a gasifier, as illustrated in the image gallery below.
Advantages of the multi-pollutant control system include:
To view image gallery, click on an image above.
For more information about our capabilities, contact us at: