Process of treating residues obtained by purification of exhaust

Details Process of treating residues obtained by purification of exhaust Process of treating residues obtained by purification of exhaust

1989-08-16

1992-03-03

Straub, Gary P.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106707, 106DIG1, 423432, 423DIG20, 423244, 405128, C04B 1806

Patent

active

050929291

ABSTRACT:
For a treatment of the residues which become available as dry dust in the purification of exhaust gas and contain, inter alia, 5 to 12% by weight CaO and have a conductance in excess of 6000 .mu.S/cm, a process is proposed in which the residues are fluidized with purified exhaust gas in a circulating fluidized bed system consisting of a fluidized bed reactor, separator and recycling line and the CaO contained in the residues is reacted with the CO.sub.2 contained in the exhaust gases to form CaCO.sub.3.

REFERENCES:
patent: 2802719 (1957-08-01), Avedikian
patent: 3642445 (1972-02-01), Muter et al.
patent: 3855125 (1974-12-01), Lin
patent: 3966431 (1976-06-01), Craig et al.
patent: 4865828 (1989-09-01), Lerner

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