IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0918085
(2006-03-24)
|
| 등록번호 |
US7976697
(2011-06-28)
|
| 국제출원번호 |
PCT/US2006/010968
(2006-03-24)
|
| §371/§102 date |
20071008
(20071008)
|
| 국제공개번호 |
WO06/118700
(2006-11-09)
|
|
발명자
/ 주소 |
- Krishnamoorthy, M. Sundaram
- Ziebarth, Michael Scott
- Yaluris, George
- Lussier, Roger Jean
- Rudesill, John Allen
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
6 인용 특허 :
43 |
초록
▼
A NOx reduction composition and process of using the composition to reduce the content of NOx emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components is disclosed. The proce
A NOx reduction composition and process of using the composition to reduce the content of NOx emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components is disclosed. The process comprises contacting a hydrocarbon feedstock during a fluid catalytic cracking (FCC) process wherein a regeneration zone of an fluid catalytic cracking unit (FCCU) is operated in a partial or incomplete combustion mode under FCC conditions, with a circulating inventory of an FCC cracking catalyst and a particulate NOx reduction composition. The NOx reduction composition has a mean particle size of greater than 45 μm and comprises (1) a zeolite component having (i) a pore size of form 2-7 A Angstroms and (ii) a SiO2 to Al2O3 molar ratio of less than 500, and (2) at least one noble metal selected from the group consisting of platinum, palladium, rhodium, iridium, osmium, ruthenium, rhenium and mixtures thereof.
대표청구항
▼
What is claimed is: 1. A process of reducing the content of NOx emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components, said process comprising(A) contacting a hydrocarbon
What is claimed is: 1. A process of reducing the content of NOx emissions and gas phase reduced nitrogen species released from the regeneration zone during fluid catalytic cracking of a hydrocarbon feedstock into lower molecular weight components, said process comprising(A) contacting a hydrocarbon feedstock during a fluid catalytic cracking (FCC) process wherein a regeneration zone of a fluid catalytic cracking unit (FCCU) is operated in a partial or incomplete combustion mode under FCC conditions, with a circulating inventory of (1) a Y-type zeolite FCC cracking catalyst and (2) an effective gas phase reduced nitrogen species reducing amount of a particle NOx reduction composition having a particle size greater than 45 μm and consisting of (a) a zeolite component having (i) a pore size ranging from about 2 to about 7.1 Angstroms and (ii) a SiO2 to Al2O3 molar ratio of less than 500, wherein the zeolite component is optionally exchanged with at least one stabilizing metal selected from the group consisting of Groups 1B, 2A, 3B, 4B, B, 6B, 7B, 2B, 3A, 4A, 5A, and the Lanthanide Series of The Periodic Table, nickel, iron, cobalt and mixtures thereof; (b) at least one noble metal selected from the group consisting of platinum, palladium, rhodium, iridium, osmium, ruthenium, rhenium and mixtures thereof; and (c) an inorganic binder; (d) optionally, clay; (e) optionally, a matrix material selected from the group consisting of alumina, silica, silica-alumina, yttria, lanthana, ceria, neodymia, samaria, europia, gadolinia, titania, zirconia, prasedoymia and mixtures thereof; and (f) optionally, an additional zeolite; and(B) reducing the content of NOx emissions an gas phase reduced nitrogen species released from the regeneration zone during the fluid catalytic cracking process.
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