US1669180A - Art of refining oils - Google Patents

Art of refining oils Download PDF

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Publication number
US1669180A
US1669180A US717091A US71709124A US1669180A US 1669180 A US1669180 A US 1669180A US 717091 A US717091 A US 717091A US 71709124 A US71709124 A US 71709124A US 1669180 A US1669180 A US 1669180A
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Prior art keywords
naphtha
petrolatum
art
steam
refining oils
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US717091A
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Cary R Wagner
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Priority claimed from US575610A external-priority patent/US1669151A/en
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Priority to US717091A priority Critical patent/US1669180A/en
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Classifications

    • 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
    • C10G73/00—Recovery or refining of mineral waxes, e.g. montan wax
    • C10G73/02—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils
    • C10G73/06—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils with the use of solvents

Definitions

  • This invention relates to the separation of petrolatum or so-called amorphous wax from steam-reduced crude oils, cylinder stocks or similar vehicles containing petrolatum.
  • Such steam-refined crude oils or cylinder stocks are prepared by the fire and steam distillation of crude oils, for example to a 15 to 25% bottom and, when prepared from Mid-Continent crude, ordinarily have a gravity of about 20 to 22 Baum and a flash point of about 515 to 530 F. It will be readily apparent that the specific gravity and flash points of the stocks are not material to the practice of the present invention.
  • an eiiective separation of the petrolatum from such stocks may be eflected by diluting the stock with 'a suitable proportion of an oil solvent or solvent mixture in which petrolatum is materially less soluble than in naphtha, chilling the mix-- ture to a suitable temperature and separating the wax by settling or by difierence in specific gravity.
  • I may admix with a suitable steam-refined oil or cylinder stock from 25 to 75% of the solvent and chill the resulting mixture by suitable refri crating means to a temperature suitable or the production of an oil having the cold test desired for the end product of the Serial No; 717,091.
  • I may employ mixtures of normal or secondary butyl alcohol and naphtha or of 'methylethylketone and naphtha.
  • 75% of naphtha has a solubility for petrolatum of less than 75% of that of naphtha.
  • a mixture of 50% butanol and 50% naphtha has-a solubility for petrolatum of approximately 30% of that of naphtha.
  • the method of separating petrolatum from steam-refined stocks which comprises diluting the stock with a mixture of a butyl alcohol and naphtha, the proportion of butyl alcohol in which is greater than 25%, and

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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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Patented May 8, 1928.
PATENT OFFICE.
CARY R. WAGNER, OF EL DORADO, ARKANSAS.
ART OF REFINING- OILS.
No Drawing. Original application filed July 17, 1922, Serial No. 575,610. Divided and this application filed May 31, 1924.
This invention relates to the separation of petrolatum or so-called amorphous wax from steam-reduced crude oils, cylinder stocks or similar vehicles containing petrolatum. Such steam-refined crude oils or cylinder stocks are prepared by the fire and steam distillation of crude oils, for example to a 15 to 25% bottom and, when prepared from Mid-Continent crude, ordinarily have a gravity of about 20 to 22 Baum and a flash point of about 515 to 530 F. It will be readily apparent that the specific gravity and flash points of the stocks are not material to the practice of the present invention.
I have found that an eiiective separation of the petrolatum from such stocks may be eflected by diluting the stock with 'a suitable proportion of an oil solvent or solvent mixture in which petrolatum is materially less soluble than in naphtha, chilling the mix-- ture to a suitable temperature and separating the wax by settling or by difierence in specific gravity. For example, I may admix with a suitable steam-refined oil or cylinder stock from 25 to 75% of the solvent and chill the resulting mixture by suitable refri crating means to a temperature suitable or the production of an oil having the cold test desired for the end product of the Serial No; 717,091.
jected to distillation, prefera ly with steam,
for removal of the solvent present, which may be recovered and reused.
For example, I may employ mixtures of normal or secondary butyl alcohol and naphtha or of 'methylethylketone and naphtha. 75% of naphtha has a solubility for petrolatum of less than 75% of that of naphtha. A mixture of 50% butanol and 50% naphtha has-a solubility for petrolatum of approximately 30% of that of naphtha.
The present application is divided from my application Serial No. 575,610, filed July 22, 1922.
I claim: 1 A
The method of separating petrolatum from steam-refined stocks which comprises diluting the stock with a mixture of a butyl alcohol and naphtha, the proportion of butyl alcohol in which is greater than 25%, and
chilling the diluted stock, and separating the petrolatum by difierence in specific gravity.
' CARY R. WAGNER.
A mixture of 25% of butanol and i
US717091A 1922-07-17 1924-05-31 Art of refining oils Expired - Lifetime US1669180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US717091A US1669180A (en) 1922-07-17 1924-05-31 Art of refining oils

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US575610A US1669151A (en) 1922-07-17 1922-07-17 Art of refining oil
US717091A US1669180A (en) 1922-07-17 1924-05-31 Art of refining oils

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US1669180A true US1669180A (en) 1928-05-08

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