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Jouve S.A., EPO - Publication - KB, TaggedPDF v1.27
EP-0626440-A1-19941130
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EP-0626440-A1-19941130
This invention relates to a stock oil pretreatment supply system adapted to supply heavy petroleum stock oil to a hydrogenator. In order to remove fine iron particles of not larger than 25 µ, which cannot be removed by the conventional techniques, from stock oil, a system consisting of a heater for heating the stock oil to a predetermined temperature by conducting heat exchange between the stock oil and a high-temperature hydrogenated oil at the bottom of a fractionating tower, a back washer-carrying solid filter for the heated stock oil, and a high-gradient magnetic separator for magnetically separating fine magnetic iron particles of not larger than 25 µ from the stock oil is formed, in which the bottom oil in the fractionating tower is used as a magnetic separator cleaning oil. The fine iron particles could be removed from the stock oil by repeating the iron removing operation and cleaning operation. This pretreatment supply system enables the iron particles, which cause a catalyst layer in the hydrogenator to be closed and deteriorated, to be reduced, and the length of time during which a conventional hydrogenator can be operated continuously to be increased.
This invention relates to a stock oil pretreatment supply system adapted to supply heavy petroleum stock oil to a hydrogenator. In order to remove fine iron particles of not larger than 25 µ, which cannot be removed by the conventional techniques, from stock oil, a system consisting of a heater for heating the stock oil to a predetermined temperature by conducting heat exchange between the stock oil and a high-temperature hydrogenated oil at the bottom of a fractionating tower, a back washer-carrying solid filter for the heated stock oil, and a high-gradient magnetic separator for magnetically separating fine magnetic iron particles of not larger than 25 µ from the stock oil is formed, in which the bottom oil in the fractionating tower is used as a magnetic separator cleaning oil. The fine iron particles could be removed from the stock oil by repeating the iron removing operation and cleaning operation. This pretreatment supply system enables the iron particles, which cause a catalyst layer in the hydrogenator to be closed and deteriorated, to be reduced, and the length of time during which a conventional hydrogenator can be operated continuously to be increased.
en
European Patent Office
EP0626440
EP 0626440
C10G 32/02
FINE MAGNETIC PARTICLE-CONTAINING STOCK OIL SUPPLY SYSTEM
FINE MAGNETIC PARTICLE-CONTAINING STOCK OIL SUPPLY SYSTEM - European Patent Office - EP 0626440 A1
FINE MAGNETIC PARTICLE-CONTAINING STOCK OIL SUPPLY SYSTEM - European Patent Office - EP 0626440 A1
Adobe PDF Library 8.0
"EP0626440"; "EP 0626440"; "C10G 32/02"; "FINE MAGNETIC PARTICLE-CONTAINING STOCK OIL SUPPLY SYSTEM"
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1
B
13
EP
0626440
A1
1994-11-30
93924799
1993-11-10
JP
30237992
1992-11-12
JP
20163593
1993-08-13
C10G 32/02
Nippon Oil Co., Ltd.
NIPPON PETROLEUM REFINING CO., LTD
OKAZAKI, Hajime
KAZATO, Manabu
OUCHI, Masaoki
NAGANO, Haruki
USHIO, Masaru
KAMIYA, Kozo
Füchsle, Klaus, Dipl.-Ing. et al
FINE MAGNETIC PARTICLE-CONTAINING STOCK OIL SUPPLY SYSTEM
ZUFÜHRSYSTEM FÜR FEINE MAGNETISCHE TEILCHEN ENTHALTENDES BASISÖL
FINE MAGNETIC PARTICLE-CONTAINING STOCK OIL SUPPLY SYSTEM
SYSTEME D'ALIMENTATION EN HUILE DE BASE CONTENANT DE FINES PARTICULES MAGNETIQUES
This invention relates to a stock oil pretreatment supply system adapted to supply heavy petroleum stock oil to a hydrogenator. In order to remove fine iron particles of not larger than 25 µ, which cannot be removed by the conventional techniques, from stock oil, a system consisting of a heater for heating the stock oil to a predetermined temperature by conducting heat exchange between the stock oil and a high-temperature hydrogenated oil at the bottom of a fractionating tower, a back washer-carrying solid filter for the heated stock oil, and a high-gradient magnetic separator for magnetically separating fine magnetic iron particles of not larger than 25 µ from the stock oil is formed, in which the bottom oil in the fractionating tower is used as a magnetic separator cleaning oil. The fine iron particles could be removed from the stock oil by repeating the iron removing operation and cleaning operation. This pretreatment supply system enables the iron particles, which cause a catalyst layer in the hydrogenator to be closed and deteriorated, to be reduced, and the length of time during which a conventional hydrogenator can be operated continuously to be increased.
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