B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/34 (2006.01) B01D 53/02 (2006.01) B01D 53/50 (2006.01) B01D 53/64 (2006.01) B01D 53/70 (2006.01) C01B 17/82 (2006.01)
Patent
CA 2094287
ABSTRACT Described is a process for the purification, using regeneratable adsorption materials, of exhaust gases contaminated with at least SO2, a heavy metal (in particular mercury) and other toxic gases (in particular dioxins and furans) from incineration plants (1), in particular waste- incineration plants. In order to be able to obtain pure, concentrated sulphuric acid and optionally also mercury, the process comprises the following steps: the exhaust gas is passed through an adsorber (4) where it is freed from SO2, the heavy metal and the other toxic gases; the gas leaving the adsorber (4) is subjected, if necessary, to additional purification operations (5,7) and then released to the atmosphere; the contaminated adsorption material in the adsorber (4) is subjected to an oxygen- less regeneration operation (9); the rich gas arising from the regeneration operation (9) is fed to a gas scrubber (11) and then processed in a nitric oxide/sulphuric acid plant (12) to give pure sulphuric acid.
Fattinger Volker
Ritter Jurgen
Kirby Eades Gale Baker
Nymic Anstalt
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