WO2024116116 - GENTLE DECOKING OF A CRACKING FURNACE COIL
National phase entry is expected:
Publication Number
WO/2024/116116
Publication Date
06.06.2024
International Application No.
PCT/IB2023/062078
International Filing Date
30.11.2023
Title **
[English]
GENTLE DECOKING OF A CRACKING FURNACE COIL
[French]
DÉCOKAGE DOUX D'UNE BOBINE DE FOUR DE CRAQUAGE
Applicants **
NOVA CHEMICALS (INTERNATIONAL) S.A.
Inventors
KOSELEK, Michael
Priority Data
63/429,808
02.12.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Pages with Drawings | * |
| Pages of Specification | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2342 | |
| EPO | Filing, Examination, Granting | 13337 | |
| Japan | Filing, Examination, Granting | 2490 | |
| South Korea | Filing, Examination, Granting | 2657 | |
| USA | Filing, Examination, Granting | 5740 |
Total:
26,566
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
Decoking a coil of a cracking furnace includes firing one or more burners of the cracking furnace at a burner fuel rate, providing a flow of superheated steam to the coil, wherein the coil comprises a layer of coke extending from an inner surface of the coil and along a length of the coil, providing a flow of air to the coil, thereby initiating a bum of the layer of coke and converting at least some of the coke to carbon dioxide, and adjusting a flow rate of the air relative to a flow rate of the superheated steam to advance a peak tube metal temperature of the coil from a region proximate a first end of the coil to a region proximate a second end of the coil until a compression strength of the furnace coil exceeds a hoop strength of the layer of coke.[French]
L'invention porte sur le décokage d'une bobine d'un four de craquage qui comprend les étapes consistant à allumer un ou plusieurs brûleurs du four de craquage à un débit de carburant de brûleur, fournir un flux de vapeur surchauffée à la bobine, la bobine comprenant une couche de coke s'étendant à partir d'une surface interne de la bobine et le long d'une longueur de la bobine, fournir un flux d'air à la bobine, ce qui permet de déclencher la combustion de la couche de coke et de convertir au moins une partie du coke en dioxyde de carbone, et ajuster le débit d'air par rapport au débit de la vapeur surchauffée pour faire progresser la température de crête du métal de tube de la bobine d'une région proche d'une première extrémité de la bobine vers une région proche d'une seconde extrémité de la bobine jusqu'à ce qu'une résistance à la compression de la bobine de four dépasse une résistance périphérique de la couche de coke.