IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0124618
(1987-11-24)
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발명자
/ 주소 |
- Yoo Jin S. (Flossmoor IL) Karch John A. (Marriottsville MD) Bhattacharyya Alakananda A. (Columbia MD) Radlowski Cecelia A. (Riverside IL)
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| 출원인 / 주소 |
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| 인용정보 |
피인용 횟수 :
36 인용 특허 :
14 |
초록
▼
A process for the removal of sulfur oxides from a gas which comprises (a) contacting the sulfur oxide-containing gas with at least one of certain metal, oxygen-containing components, e.g., modified perovskite-type components, at conditions effective to associate at least a portion of the sulfur oxid
A process for the removal of sulfur oxides from a gas which comprises (a) contacting the sulfur oxide-containing gas with at least one of certain metal, oxygen-containing components, e.g., modified perovskite-type components, at conditions effective to associate at least a portion of the sulfur oxides with the component to reduce the amount of sulfur oxides in the gas; and (b) contacting the component containing associated sulfur oxides at conditions effective to reduce the amount of sulfur associated with the component.
대표청구항
▼
A process for the removal of sulfur oxides from a gas which comprises (a) contacting said sulfur oxide-containing gas with at least one metal, oxygen-containing component at conditions effective to associate at least a portion of said sulfur oxides with said component to reduce the amount of sulfur
A process for the removal of sulfur oxides from a gas which comprises (a) contacting said sulfur oxide-containing gas with at least one metal, oxygen-containing component at conditions effective to associate at least a portion of said sulfur oxides with said component to reduce the amount of sulfur oxides in said gas; and (b) contacting said component containing associated sulfur oxides at conditions effective to reduce the amount of sulfur associated with said component, said component having an empirical formula selected from the following: (1) A1-xMxB1-yM′yO3-z; (2) A2B2O7-w; and (3) A2-uMuB2-vM′vO7-w wherein A is selected from the group consisting of the lanthanide series metals, alkaline earth metals, sodium, potassium, cesium and mixtures thereof; M is different from A, B and M′and is selected from the group consisting of alkaline earth metals, Group VIII metals, manganese, lead, zinc, thorium, yttrium cerium and mixtures thereof; B and M′are different from each other and are independently selected from the group consisting of Group VIII metals, magnesium, titanium, manganese, copper, aluminum, niobium, tantalum, chromium, gallium, zirconium, vanadium, molybdenum, antimony, bismuth, tin, tungsten and mixtures thereof; x and y are independently in the range of 0 to 1 so that the total number of positive charges from A, M, B and M′in empirical formula (1) is within the range of about 5 to about 7, u and v are independently in the range of 0 to 2 so that the total number of positive charges for A, M, B and M′in empirical formula (3) is within the range of about 12 to about 16, z is in the range of about -0.5 to about 0.5 and w is in the range of about -1 to about 1, provided that not all of x, y and z are zero in empirical formula (1) and not all of u, v and w are zero in empirical formula (3), and further provided that when B is niobium, A is selected from sodium, potassium, cesium and mixtures thereof.
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