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US 7,578,869 B2Granted
Methods of manufacturing bentonite pollution control sorbents
AssigneeBASF Catalysts LLC
InventorsXiaolin David Yang, Pascaline Harrison Tran, Lawrence Shore, Barry Keven Speronello, Ronald Thomas Mentz
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Abstract
Methods of manufacturing bentonite sorbents for removal of pollutants including mercury from gas streams, such as a flue gas stream from coal-fired utility plants are disclosed. The methods include mixing bentonite sorbent particles with a sulfide salt and a metal salt to form a metal sulfide on the outer surface of the bentonite sorbent particles.
Claims15
A method of making sorbent particles effective for the removal of pollutants from a gaseous stream comprising:
- mixing a solid metal salt and bentonite particles to provide a mixture;
- adding a sulfide salt into the mixture, the metal salt and sulfide salt reacting to form a metal sulfide on the surface of the bentonite particles, the metal sulfide formed during a grinding process, a milling process or an incipient wetness process;
- and
- drying the mixture of the bentonite particles having a metal sulfide on the surface of thereof being effective for the removal of pollutants from a gaseous stream.
1 more element
Dependencies are inferred from the claim text.