Reduction of NOemissions in full burn FCC processes
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-011/04
출원번호
UP-0665814
(2005-10-31)
등록번호
US-7695611
(2010-05-20)
국제출원번호
PCT/US2005/039093
(2005-10-31)
§371/§102 date
20070419
(20070419)
국제공개번호
WO06/050168
(2006-05-11)
발명자
/ 주소
Yaluris, George
Rudesill, John
출원인 / 주소
W. R. Grace & Co.—Conn.
대리인 / 주소
Cross, Charles A.
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
Compositions for reduction of NOx emissions generated during catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures th
Compositions for reduction of NOx emissions generated during catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, (iv) palladium and (v) a noble metal component, preferably platinum, rhodium or iridium, and mixtures thereof. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced content of NOx in an effluent off gas of a full or complete combustion FCC regenerator are accomplished while simultaneously promoting the combustion of CO.
대표청구항▼
What is claimed is: 1. A method of reducing NOx emissions from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components, said method comprising contacting a hydrocarbon feedstock with a cracking catalyst inventory at elevated temperatur
What is claimed is: 1. A method of reducing NOx emissions from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components, said method comprising contacting a hydrocarbon feedstock with a cracking catalyst inventory at elevated temperature in a fluid catalytic cracking unit having a regeneration zone operated under a full burn mode or complete mode of combustion under fluid catalytic cracking conditions whereby lower molecular weight hydrocarbon components are formed, said cracking catalyst comprising (a) a fluid catalytic cracking component suitable for catalyzing the cracking of hydrocarbons, and (b) a NOx reduction component comprising (i) at least about 5.0 wt % of acidic metal oxide containing substantially no zeolite; (ii) at least 0.5 wt %, measured as metal oxide, of a metal component selected from the group consisting of alkali metals, alkaline earth metals, and mixtures thereof (iii) at least 0.1 wt %, measured as metal oxide, of an oxygen storage metal oxide; (iv) at least 0.1 ppm palladium; and (v) at least 0.1 ppm of a noble metal component selected from the group consisting of platinum, iridium, rhodium, osmium, ruthenium, rhenium and mixtures thereof, all percentages being based on the total weight of the NOx reduction component. 2. The method of claim 1 further comprising recovering the cracking catalyst from said contacting step and treating the used catalyst in a regeneration zone to regenerate said catalyst. 3. The method of claim 1 wherein components (a) and component (b) are fluidized during contacting said hydrocarbon feedstock. 4. The method of claim 1 wherein the method promotes CO combustion simultaneously with reducing NOx emissions from the regeneration zone of a fluid catalytic cracking unit during a fluid catalytic cracking process. 5. The method of claim 1 wherein the method reduces afterburn in the regeneration zone of a fluid catalytic cracking unit during a fluid catalytic cracking process. 6. The method of claim 1 wherein the NOx reduction component is a separate particle additive. 7. The method of claim 6 wherein the NOx reduction component has a mean particle size of about 50 to about 200 μm. 8. The method of claim 1 wherein the NOx reduction component is an integral component of the cracking catalyst. 9. The method of claim 1 wherein the NOx reduction component is used in an amount sufficient to prevent afterburning in the catalytic cracking unit. 10. The method of claim 1 wherein the NOx reduction component is present in an amount of at least 0.01 wt % of the cracking catalyst inventory.
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이 특허에 인용된 특허 (20)
Fujii Jun (Saitama JPX) Suzuki Kazunori (Saitama JPX) Kimura Kazuo (Saitama JPX), Catalyst for cleaning exhaust gas with alumina, ceria, zirconia, nickel oxide, alkaline earth oxide, and noble metal cat.
Chin Arthur A. (Cherry Hill NJ) Child Jonathan E. (Cherry Hill NJ) Schipper Paul H. (Wilmington DE), Catalytic cracking process with isolated catalyst for conversion of NOx in FCC regenerator.
Meguerian Garbis H. (Olympia Fields IL) Lorntson John M. (Naperville IL) Vasalos Iacovos A. (Downers Grove IL), Catalytic cracking with reduced emission of noxious gas.
Vasalos Iacovos A. (Downers Grove IL) Ford William D. (Downers Grove IL) Hsieh Chuan-Kang R. (Naperville IL), Catalytic cracking with reduced emission of noxious gases.
Hansen Allen R. (Glassboro NJ) Johnson David L. (Glen Mills PA) Stevenson Scott A. (Newtown PA) Schipper Paul H. (Doylestown PA) Harandi Mohsen N. (Langhorne PA), Conversion of NOxin FCC bubbling bed regenerator.
Peters Alan W. ; Rudesill John A. ; Weatherbee Gordon Dean ; Rakiewicz Edward F. ; Barbato-Grauso Mary Jane A., NO.sub.x reduction compositions for use in FCC processes.
Peters Alan W. ; Rudesill John A. ; Weatherbee Gordon Dean ; Rakiewicz Edward F. ; Barbato-Grauso Mary Jane A. ; Zhao Xinjin, NO.sub.x reduction compositions for use in FCC processes.
Peters Alan W. ; Rudesill John A. ; Weatherbee Gordon Dean ; Rakiewicz Edward F. ; Barbato-Grauso Mary Jane A. ; Zhao Xinjin, NOx reduction compositions for use in FCC processes.
Buchanan John S. (Trenton NJ) Mathias Mark F. (Turnersville NJ) Sodomin ; III Joseph F. (Landenberg PA) Teitman Gerald J. (Vienna VA), Removing SOx, NOX and CO from flue gases.
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