Catalyst and method of use in the reduction of nitrogen oxides using lower hydrocarbons
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0709895
(2000-11-10)
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발명자
/ 주소 |
- Ozkan, Umit S.
- Watson, Junko M.
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출원인 / 주소 |
- The Ohio State University
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
8 인용 특허 :
3 |
초록
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The present invention includes a supported catalyst for the reduction of nitrogen oxides (NOx) with a lower hydrocarbon. The supported catalyst comprising at least one active metal and at least one promoter metal attached to a support. The support may additionally include activated carbon. The promo
The present invention includes a supported catalyst for the reduction of nitrogen oxides (NOx) with a lower hydrocarbon. The supported catalyst comprising at least one active metal and at least one promoter metal attached to a support. The support may additionally include activated carbon. The promoter metals may be chosen from the lanthanide metals and the active metals may be chosen from palladium or platinum. The invention also includes a method of making the above mentioned catalysts and a method of using the catalysts to reduce nitrogen oxides (NOx) with a lower hydrocarbon.
대표청구항
▼
The present invention includes a supported catalyst for the reduction of nitrogen oxides (NOx) with a lower hydrocarbon. The supported catalyst comprising at least one active metal and at least one promoter metal attached to a support. The support may additionally include activated carbon. The promo
The present invention includes a supported catalyst for the reduction of nitrogen oxides (NOx) with a lower hydrocarbon. The supported catalyst comprising at least one active metal and at least one promoter metal attached to a support. The support may additionally include activated carbon. The promoter metals may be chosen from the lanthanide metals and the active metals may be chosen from palladium or platinum. The invention also includes a method of making the above mentioned catalysts and a method of using the catalysts to reduce nitrogen oxides (NOx) with a lower hydrocarbon. d settler and for introducing said catalyst mixture phase regeneration stream into the intermediate portion of said second separator; eleventh conduit means operably related to said second separator and operably related to said settler for withdrawing a second separator overhead stream from the upper portion of said second separator and for introducing said second separator overhead stream to the intermediate portion of said settler; twelfth conduit means operably related to said second separator and operably related to said third separator for withdrawing a second separator bottoms stream from the lower portion of said second separator and for introducing said second separator bottoms stream to the intermediate portion of said third separator, said upper portion of said third separator being operable for containing ASO and said lower portion of said third separator being operable for containing HF and volatility reducing additive; thirteenth conduit means operably related to said twelfth conduit means for withdrawing a purge stream from said twelfth conduit means; and fourteenth conduit means operably related to said third separator and operably related to said settler for withdrawing a third separator bottoms stream from said lower portion of said third separator and for introducing at least a portion of said third separator bottoms stream into said intermediate portion of said settler. 2. A system as recited in claim 1 further comprising control means operably related to said sixth conduit means, said seventh conduit means, said ninth conduit means, said tenth conduit means, said twelfth conduit means, and said thirteenth conduit means for controlling the water concentration in said catalyst mixture phase regeneration stream to a level equal to a set point water wt. %, based on the total weight of said catalyst mixture phase. 3. A system as recited in claim 2 wherein said control means comprises: means for establishing a first signal, operably related to said sixth conduit means, representative of the actual flow rate of said HF/water stream; means for establishing a second signal, operably related to said seventh conduit means, representative of the actual flow rate of said portion of said HF/water stream; means for establishing a third signal, operably related to said ninth conduit means, representative of the actual value of said water concentration of said catalyst mixture phase; means for establishing a fourth signal, operably related to said tenth conduit means, representative of the actual flow rate of said catalyst mixture phase regeneration stream; means for establishing a fifth signal representative of said set point water wt. % of said catalyst mixture phase; means for establishing a sixth signal, operably related to said twelfth conduit means, representative of the actual flow rate of said second separator bottoms stream; means for establishing a seventh signal, operably related to said thirteenth conduit means, representative of the actual flow rate of said purge stream; computer means for comparing said third signal to said fifth signal and establishing an eighth signal, a ninth signal, a tenth signal, an eleventh signal and a twelfth signal, each responsive to said first signal, said second signal, said fourth signal, said sixth signal, said seventh signal and to the difference between said third signal and said fifth signal, wherein said eighth signal, said ninth signal, said tenth signal, said eleventh signal and said twelfth signal are scaled to be representative of the flow rates of: said HF/water stream, said portion of said HF/water stream, said catalyst mixture phase regeneration stream, said second separator bottoms stream and said purge stream, respectively, required to maintain the actual value of said water concentration represented by said third signal equal to said set point water wt. % represented by said fifth signal; means for comparing said first signal and said eighth signal
이 특허에 인용된 특허 (3)
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Kolts John W. (Ochelata OK), Catalyst for the oxidation of carbon monoxide.
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Chattha Mohinder S. ; Hoost Tjenga E. ; Kudla Robert J., Diesel emission treatment using precious metal on titania aerogel.
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Antos George J. (Bartlett IL), Nonacidic multimetallic catalytic composite.
이 특허를 인용한 특허 (8)
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Arnold, Mirko; Kotrel, Stefan; Siani, Attilio; Siemund, Stephan; Schmitz, Thomas; Rabe, Burkhard; Gramiccioni, Gary A; Seel, Oliver; Neubauer, Torsten; Wassermann, Knut, Automotive catalyst composites having a two-metal layer.
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Hoyer, Ruediger; Wen, Fei; Mueller, Elena, Catalyst for the oxidation of CO and HC at low temperatures.
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Ito,Junji, Exhaust gas purifying catalyst and exhaust gas purifying system.
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Kato, Naohiro; Dornhaus, Franz, Exhaust gas treatment system.
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Silver, Ronald Graham; Wang, Paul Sai Keat; Montgomery, David T., Exhaust system.
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Fu, Guoyi; Augustine, Steven M., Nanocomposite particle and process of preparing the same.
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Fu, Guoyi; Augustine, Steven M., Nanocomposite particle and process of preparing the same.
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Burton, Patrick David; Boyle, Timothy J; Datye, Abhaya, Synthesis of PD particles by alcohols-assisted photoreduction for use in supported catalysts.
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