Simultaneous removal of mercury, PCDD/F, and fine particles from flue gas.
A multifunctional scrubber (MFS) has been developed to reduce the complexity of flue gas cleaning plants. The MFS integrates an oxidizing scrubber equipped with a dioxin-absorbing tower packing material and a space charge electrostatic precipitator. All these processes have been previously developed at Forschungszentrum Karlsruhe. In the described multifunctional scrubber, mercury, sulfur dioxide, hydrogen chloride, polychlorinated dibenzo-p-dioxins (PCDD), polychlorinated dibenzofurans (PCDF), and submicrometer particles are removed simultaneously. A MFS pilot plant with a flue gas volume flow of 250 m(3)/h has been installed in a slipstream of a waste incineration pilot plant. Pilot scale testing was performed to measure mercury, particles, and PCDD/F in the raw and clean gas. After optimization of the process these three flue gas components were separated from the flue gas in the range 87-97%.
Korell
Jens
J
Forschungszentrum Karlsruhe, Institute for Technical Chemistry, Thermal Waste Treatment Division (ITC-TAB), D-76021 Karlsruhe, Germany. korell@itc-tab.fzk.de
Paur
Hanns-R
HR
Seifert
Helmut
H
Andersson
Sven
S
D001572:Benzofurans / Q000302:isolation & purification*; D000072338:Dibenzofurans, Polychlorinated; D052918:Environmental Restoration and Remediation / Q000295:instrumentation; D005740:Gases / Q000737:chemistry*; D007221:Industry; D008628:Mercury / Q000302:isolation & purification*; D052638:Particulate Matter / Q000302:isolation & purification*; D010865:Pilot Projects; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000302:isolation & purification
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D005740:Gases; D052638:Particulate Matter; D000072317:Polychlorinated Dibenzodioxins; D008628:Mercury