Method and apparatus for mitigating mercury emissions in exhaust gases
AssigneeThe Regents of the University of California
InventorKeith Schofield
Life of this patent
Estimating the term…
Abstract
Mercury emissions in an exhaust gas are mitigated. Mercury dichloride is formed upon a surface from a substantial portion of the mercury in the exhaust gas. The mercury dichloride sublimes from the surface, and the sublimed mercury dichloride is subsequently removed from the exhaust stream.
Claims11
A method for continuously converting mercury in an exhaust gas into mercury dichloride in a proportion effective for removal of the mercury from the exhaust gas comprising the steps of:
- contacting a substantial portion of the exhaust gas with one or more steel two dimensional spoiler surfaces at a temperature between about 150° C. and 300° C. wherein mercury compounds deposit on the steel surface and sublime back into the exhaust gas as volatlle mercury dichloride;
- and
- scrubbing the exhaust gas to remove the mercury dichloride.
A method for continuously converting mercury in an effective proportion in an exhaust gas into volatile mercury dichloride comprising the steps of:
- contacting a substantial portion of the exhaust gas with at least one steel two dimensional spoiler surface having a temperature between about 150° C. and 300° C.;
- depositing mercury compounds on the at least one stationary steel surface;
- converting the deposited mercury compounds into mercury dichloride;
- and
- subliming the mercury dichloride on the at least one steel surface back into the exhaust gas.
Dependencies are inferred from the claim text.