| (19) |
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(11) |
EP 0 794 241 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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11.02.1998 Bulletin 1998/07 |
| (43) |
Date of publication A2: |
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10.09.1997 Bulletin 1997/37 |
| (22) |
Date of filing: 05.03.1997 |
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| (51) |
International Patent Classification (IPC)6: C10G 45/44 |
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| (84) |
Designated Contracting States: |
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DE ES FR GB IT NL SE |
| (30) |
Priority: |
05.03.1996 FI 961012
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| (71) |
Applicant: NESTE OY |
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SF-02150 Espoo 15 (FI) |
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| (72) |
Inventors: |
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- Aittamaa, Juhani
00920 Helsinki (FI)
- Ignatius, Jyrki
06450 Porvoo (FI)
- Lindgren, Esa
06100 Porvoo (FI)
- Lonka, Sirpa
01350 Vantaa (FI)
- Markkanen, Varpu
01230 Vantaa (FI)
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| (74) |
Representative: Sundman, Christoffer et al |
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Seppo Laine Oy,
Lönnrotinkatu 19 A
00120 Helsinki
00120 Helsinki (FI) |
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Remarks: |
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A request for correction of the description, claims and abstract have been filed
pursuant to Rule 88 EPC. A decision on the request will be taken during the proceedings
before the Examining Division (Guidelines for Examination in the EPO, A-V, 3.). |
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| (54) |
Process for dearomatization of petroleum distillates |
(57) The invention concerns a process for dearomatization of petroleum distillates, wherein
a distillate feedstock containing aromatic compounds is fed into a hydrotreating process
unit, in which its aromatic compounds are hydrogenated. According to the invention
at least two of the following petroleum distillates a to c are hydrogenated in the
same hydrotreating process unit: a) a solvent cut having a boiling point range of
60 to 270 °C, b) a middle distillate having a boiling point range of 180 to 320 °C,
and c) a naphtha having a a boiling point range of 20 to 190 °C. The temperature rise
in the reaction zone is limited to less than 60 °C by cooling the effluent of the
reaction zone and recycling a part of it to the reaction zone. By means of the invention
it is possible substantially to reduce investment costs for dearomatization units,
because several different kinds of products can be treated in the same unit.