Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Iron group metal
Patent
1982-09-29
1986-07-01
Straub, Gary P.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Iron group metal
423235, 423243, 423239, 210757, 556148, C01B 2100, C01B 1700, C02F 170
Patent
active
045979545
ABSTRACT:
A process for removing SO.sub.x pollutants from a stack gas by (1) absorbing the SO.sub.x pollutants into an aqueous absorbent containing a formate compound and (2) regenerating the spent absorbent containing dissolved SO.sub.x compounds by contact, in the presence of added formate anion, with a water-insoluble, solid substance containing one or more tertiary amine functional groups. Nitrogen monoxide is removed by providing in the aqueous absorbent an iron(II) chelate, such as a chelate of ferrous ion with ethylenediaminetetraacetic acid. Regeneration of the spent absorbent containing absorbed NO is accomplished under the same conditions as for spent absorbents containing absorbed SO.sub.x compounds. SO.sub.x and NO pollutants dissolved in the absorbent are, during regeneration, converted to hydrogen sulfide and nitrogen, respectively.
REFERENCES:
patent: 2142987 (1939-01-01), Bacon et al.
patent: 2664441 (1953-12-01), Owens et al.
patent: 2697725 (1954-12-01), Bryce
patent: 2729543 (1956-01-01), Keller
patent: 3397963 (1968-08-01), Wagner
patent: 3584042 (1971-06-01), Yavorsky et al.
patent: 3592850 (1971-07-01), Mazzocco et al.
patent: 3687614 (1972-08-01), Yavorsky et al.
patent: 3687615 (1972-08-01), Gorin et al.
patent: 3928537 (1975-12-01), Saitoh et al.
patent: 3961034 (1976-06-01), Bostian et al.
patent: 3984522 (1976-10-01), Saito et al.
patent: 4013430 (1977-03-01), Adachi et al.
patent: 4055623 (1977-10-01), Saitoh et al.
patent: 4071602 (1978-01-01), Pearce
patent: 4083944 (1978-04-01), Chalmers
patent: 4177140 (1979-12-01), Smakman
patent: 4222991 (1980-09-01), Hass
patent: 4331639 (1982-05-01), Hass et al.
patent: 4347227 (1982-08-01), Hass et al.
patent: 4386058 (1983-05-01), Hass
"Reactions with Addition Compounds Containing Activated Formic Acid", published in Augwandte Chemie, International Edition in English, Wagner, vol. 9, 1970, pp. 50-54.
"Nox Abatement for Stationary Sources in Japan," Environmental Protection Agency, Sep., 1977, EPA-600/7-77-103b.
"Potassium Formate Process for Removing So.sub.2 from Stack Gas" in Environmental Science and Technology, vol. 4, No. 9, Sep. 1970, pp. 757-765.
"Amber-Hi-Lites," Special Issue, Jan. 1971, Rohm and Haas Co., Philadelphia, Pa., 7 pages.
"Amberlite IRA-47" by Rohm and Haas Co., May 1970.
"Amber-Hi-Lites" by Rohm and Haas Co., Special Issue, No. 159, Aug. 1978.
"Microdetermination of Nitrates and Nitrites-III" by Awad et al. in Talanta, vol. 18, No. 7 (1977) pp. 219-224.
"Absorption of Nitric Oxide by Ferrous Sulfate" by Ganz et al. in the Journal of Applied Chemistry of the U.S.S.R., vol. 26, No. 10, (Oct., 1953), pp. 927-935--English translation.
Abstract of a publication entitled "Fixed Bed Sorption of Sulfur Dioxide by Ion Exchange Resins" by R. W. Thompson et al., 69th AiChE Annual Meeting, Chicago, 11/28-12/2/76, Preprint No. 71d).
Chemical Abstract, vol. 85, 112310n German Offen No. 2,444,781.
Chemical Abstract, vol. 86, 95324w German Offen No. 2,509,788.
Chemical Abstract, vol. 86, 126476d German Offen No. 2,511,140.
Chemical Abstract, vol. 86, 176561y German Offen No. 2,519,939.
Chemical Abstract, vol. 87, 90011c German Offen No. 2,538,312.
Sandford Dean
Straub Gary P.
Union Oil Company of California
Wirzbicki Gregory F.
LandOfFree
Process for removing sox and nox compounds from gas streams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for removing sox and nox compounds from gas streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removing sox and nox compounds from gas streams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1081846