Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing
Patent
1976-10-07
1978-03-28
Vertiz, O. R.
Chemistry of inorganic compounds
Sulfur or compound thereof
Oxygen containing
423170, 423244, 423555, 423638, C01B 1742, B01J 1700
Patent
active
040815226
ABSTRACT:
Alkali metal or alkaline earth metal carbonates such as calcium carbonate and magnesium carbonate found in dolomite or limestone are employed for removal of sulfur dioxide from combustion exhaust gases. The sulfated carbonates are regenerated to oxides through use of a solid-solid reaction, particularly calcium sulfide with calcium sulfate to form calcium oxide and sulfur dioxide gas. The regeneration is performed by contacting the sulfated material with a reductant gas such as hydrogen within an inert diluent to produce calcium sulfide in mixture with the sulfate under process conditions selected to permit the sulfide-sulfate, solid-state reaction to occur.
REFERENCES:
patent: 3260035 (1966-06-01), Wheelock et al.
patent: 3582276 (1971-06-01), Campbell et al.
patent: 3640682 (1972-02-01), Smith et al.
patent: 3726957 (1973-04-01), Lind
patent: 3729551 (1973-04-01), Gorin
Hoke et al. A Regenerative Limestone Process for Fluidized Bed Coal Combustion and Desulfurization, NTIS PB 231 374, Springfield UA Jan. 74, pp. 1a, 1b, 16-21, 66-89.
Cunningham Paul T.
Hubble Bill R.
Siegel Stanley
Carlson Dean E.
Glenn Hugh W.
Jackson Frank H.
Straub Gary P.
The United States of America as represented by the United States
LandOfFree
Regeneration of sulfated metal oxides and carbonates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Regeneration of sulfated metal oxides and carbonates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regeneration of sulfated metal oxides and carbonates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-642991