US3308060A - Petroleum distillation - Google Patents

Petroleum distillation Download PDF

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Publication number
US3308060A
US3308060A US428821A US42882165A US3308060A US 3308060 A US3308060 A US 3308060A US 428821 A US428821 A US 428821A US 42882165 A US42882165 A US 42882165A US 3308060 A US3308060 A US 3308060A
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United States
Prior art keywords
gas oil
crude
residue
percent
atmospheric
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Expired - Lifetime
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US428821A
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English (en)
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Ellis John Francis Griffith
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BP PLC
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BP PLC
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G7/00—Distillation of hydrocarbon oils

Definitions

  • This invention relates to the distillation of petroleum and particularly to the maximum separation of gas oil fractions, is. fractions 'boilin-g Within the range 220-400 C. on a TBP curve, from crude oils.
  • the heavy gas oil side stream fraction is combined with at least a portion of the atmospheric residue, the combined fraction being refractionated to give an additional gas oil product.
  • the heavy gas oil is combined with the front 10-40% weight portion of the atmospheric residue, which is preferably obtained by vacuum flashing the atmospheric residue to give a 1040% weight overhead portion.
  • This portion is subsequently combined with the heavy atmospheric gas oil, and the mixture fractionated under vacuum in a re'boiled column.
  • the whole of the atmospheric residue may I be combined with the heavy gas oil before vacuum flashing the mixture in a tower containing fractionating trays, under flash conditions arranged to give the required reflux in the fractionation section.
  • This method is not so closely controllable however, but may be suitable where mini 'mum plant alteration is essential.
  • the experiment demonstrates that the yield of gas oil boiling above a crude oil TBP cut point of 223 may be increased from 22.47% wt. on crude to 26.72% wt. on crude; the pour point of the total gas oil remains constant at 15 F., While the specific gravity (measured at 60 F.) increases from 0.8462 to 0.8520. At the same time the cloud point decreases from 22 F. to 18 F., while the diesel index decreases from 58 to 55. Thus an improvement in both specific gravity and cloud point is obtained, and although the diesel index decreases slightly the decrease is acceptably small.
  • Example 2 The invention has been further demonstrated on exist ing refinery equipment.
  • Experiment 3 shows that for constant diesel index the yield of gas oil boiling above a crude oil TBP cut point of 235/236 C. is increased from 21.51% wt. on crude (experiment 1) to 23.09% wt. on crude, i.e. an increase of 7.35% wt. on product; at the same time the pour point is reduced from F. to 20 F., whilst the cloud point also shows a significant reduction from 32 F. to 20 F.
  • Experiment 2 shows that fior substantially constant diesel index and cloud point the yield of gas oil boiling above a crude oil TBP cut point of 235/236 'C. is increased from 21.51% wt. on crude (experiment 1) to 26.38% wt. on crude, i.e. an increase of 22.7% wt. on product; although the pour point is adversely raised from 25 F. to F.
  • Atmospheric residue feed 0 .9439 100.00 297, 390 31, 507 100.00 320 Vacuum gas oil 0.8772 16.20 48, 177 5, 492 17.43 320-3725 Waxy distillate 0.9151 45 .70 135, 907 14, 852 47.14 372. 5-543 Vacuum residue 1.0090 38.10 113, 306 11, 230 35.64 543 Total 100.00 297, 390 31, 574 100.21
  • Atmospheric heavy gas oil together with atmospheric residue pheric residue from the base of the column is fed via line 65 is 20% Wt., While on rerun column feed it is equivalent to a 47.6% wt. distillate. Residue from this reboiled column is combined via line 14 with that recovered from the column 4, so as to give a final residue of 80% weight calculated on atmospheric heavy gas oil and atmospheric 70 residue feed to the recovery system.
  • the gas oil recovery unit will thus produce a good quality gas oil with a pour point of 35 F. (as indicated in Table 3) at a yield on crude of 10.88% wt., so that when blended with the light gas oil drawn from the crude unit (pour point --5 F., yield on crude 15.84%
  • the resulting gas oil has a pour point of 15 F. at a yield on crude of 26.72% wt.
  • Equipment of the type described above could be added to an existing crude distillation unit to increase gas oil recovery. If units already exist for vacuum distillation of only a part of the atmospheric residue, the above equipment could be integrated with the existing units. In a new refinery where vacuum distillation of atmospheric residue is required, say to produce feedstock for another process, then the above equipment could be integrated with the vacuum distillation unit with corresponding reduction in capital and operating costs.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
US428821A 1964-02-21 1965-01-28 Petroleum distillation Expired - Lifetime US3308060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7320/64A GB1020667A (en) 1964-02-21 1964-02-21 Improvements relating to petroleum distillation

Publications (1)

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US3308060A true US3308060A (en) 1967-03-07

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US428821A Expired - Lifetime US3308060A (en) 1964-02-21 1965-01-28 Petroleum distillation

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US (1) US3308060A (US06650917-20031118-M00005.png)
BE (1) BE660074A (US06650917-20031118-M00005.png)
DE (1) DE1545227A1 (US06650917-20031118-M00005.png)
GB (1) GB1020667A (US06650917-20031118-M00005.png)
NL (1) NL6502098A (US06650917-20031118-M00005.png)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402122A (en) * 1966-12-05 1968-09-17 Universal Oil Prod Co Preparation of an absorption medium for hydrocarbon recovery
US3453205A (en) * 1967-03-08 1969-07-01 Combustion Eng Method and means for field-processing crude petroleum production
US3544428A (en) * 1968-12-30 1970-12-01 Universal Oil Prod Co Hydrocarbon fractionation column having plural flashing and stripping sections
US4131538A (en) * 1976-04-06 1978-12-26 Riley-Beaird, Inc. Method of separating a predetermined fraction from petroleum oil using multistage evaporators
US7172686B1 (en) * 2002-11-14 2007-02-06 The Board Of Regents Of The University Of Oklahoma Method of increasing distillates yield in crude oil distillation
US20160160130A1 (en) * 2014-12-08 2016-06-09 Gary R. Martin Integrated Vacuum Distillate Recovery Process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4606816A (en) * 1984-12-31 1986-08-19 Mobil Oil Corporation Method and apparatus for multi-component fractionation
JP2001073715A (ja) 1999-09-08 2001-03-21 Mitsubishi Heavy Ind Ltd 高効率発電方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954839A (en) * 1924-07-15 1934-04-17 Phillips Petroleum Co Rectifying process
US1997675A (en) * 1930-08-28 1935-04-16 Standard Oil Co Distillation
US2850436A (en) * 1954-03-16 1958-09-02 Gulf Research Development Co Method for the preparation of solid petroleum pitch
US3234118A (en) * 1962-06-20 1966-02-08 Foster Wheeler Corp Process for making a heavy fuel oil with recycle visbreaking of gas oil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954839A (en) * 1924-07-15 1934-04-17 Phillips Petroleum Co Rectifying process
US1997675A (en) * 1930-08-28 1935-04-16 Standard Oil Co Distillation
US2850436A (en) * 1954-03-16 1958-09-02 Gulf Research Development Co Method for the preparation of solid petroleum pitch
US3234118A (en) * 1962-06-20 1966-02-08 Foster Wheeler Corp Process for making a heavy fuel oil with recycle visbreaking of gas oil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402122A (en) * 1966-12-05 1968-09-17 Universal Oil Prod Co Preparation of an absorption medium for hydrocarbon recovery
US3453205A (en) * 1967-03-08 1969-07-01 Combustion Eng Method and means for field-processing crude petroleum production
US3544428A (en) * 1968-12-30 1970-12-01 Universal Oil Prod Co Hydrocarbon fractionation column having plural flashing and stripping sections
US4131538A (en) * 1976-04-06 1978-12-26 Riley-Beaird, Inc. Method of separating a predetermined fraction from petroleum oil using multistage evaporators
US7172686B1 (en) * 2002-11-14 2007-02-06 The Board Of Regents Of The University Of Oklahoma Method of increasing distillates yield in crude oil distillation
US20160160130A1 (en) * 2014-12-08 2016-06-09 Gary R. Martin Integrated Vacuum Distillate Recovery Process

Also Published As

Publication number Publication date
GB1020667A (en) 1966-02-23
NL6502098A (US06650917-20031118-M00005.png) 1965-08-23
BE660074A (US06650917-20031118-M00005.png) 1965-08-23
DE1545227A1 (de) 1969-07-10

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