Integrated Multi-pollutant Control | Hot Sieving Electrostatic Precipitator
Canada’s Clean Coal Technology Roadmap identifies hot gas clean-up as a high priority area for development of near-zero emission coal-fired processes. Current hot gas clean-up technologies are not capable of capturing fine particulate matter and other pollutants in a cost effective way.
There are several technologies currently used for hot gas clean-up, such as cyclones, ceramic filters and panel bed filters, but all these technologies have drawbacks. For example, while cyclones are less expensive and require lower maintenance cost, they are not capable of capturing submicron particles and have a large physical footprint. On the other hand, ceramic filters have high efficiency and small footprint but have high pressure drop and are costly. The high pressure drop creates an extra energy demand, which leads to a lower level of efficiency for the overall system. Finally, panel bed filters have high pressure drop with low ash handling capacity and low gas velocity.
Sieving ESP is a newly developed technology that can capture submicron particles efficiently. It consists of closely packed fine-wire screen sets that are oriented perpendicular to the flue gas flow direction. As well as having conventional particle collection mechanisms, Sieving ESP has its own unique submicron particle agglomeration and collection mechanism, leading to a smaller physical footprint and lower pressure drop. The advanced high-efficiency hot gas clean-up ESP technology provides a cost-effective approach to removing fine particulate matter and other air pollutants. The Sieving ESP has application in both combustion as well as gasification processes.
Our researchers and scientists are developing a new Hot Sieving ESP pilot-scale prototype as the platform for fine particulate and multi-pollutant control. Upon successful demonstration of the first prototype, the work will continue by developing an integrated multi-pollutant unit for testing new clean fossil fuel processes with CO2 capture at the Vertical Combustor Research Facility.
There are several technologies currently used for hot gas clean-up, such as cyclones, ceramic filters and panel bed filters, but all these technologies have drawbacks. For example, while cyclones are less expensive and require lower maintenance cost, they are not capable of capturing submicron particles and have a large physical footprint. On the other hand, ceramic filters have high efficiency and small footprint but have high pressure drop and are costly. The high pressure drop creates an extra energy demand, which leads to a lower level of efficiency for the overall system. Finally, panel bed filters have high pressure drop with low ash handling capacity and low gas velocity.
Sieving ESP is a newly developed technology that can capture submicron particles efficiently. It consists of closely packed fine-wire screen sets that are oriented perpendicular to the flue gas flow direction. As well as having conventional particle collection mechanisms, Sieving ESP has its own unique submicron particle agglomeration and collection mechanism, leading to a smaller physical footprint and lower pressure drop. The advanced high-efficiency hot gas clean-up ESP technology provides a cost-effective approach to removing fine particulate matter and other air pollutants. The Sieving ESP has application in both combustion as well as gasification processes.
Our researchers and scientists are developing a new Hot Sieving ESP pilot-scale prototype as the platform for fine particulate and multi-pollutant control. Upon successful demonstration of the first prototype, the work will continue by developing an integrated multi-pollutant unit for testing new clean fossil fuel processes with CO2 capture at the Vertical Combustor Research Facility.
Sieving ESP Integration at Vertical Combustor Research Facility