US1908273A - Sweetening petroleum distillates - Google Patents

Sweetening petroleum distillates Download PDF

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Publication number
US1908273A
US1908273A US445207A US44520730A US1908273A US 1908273 A US1908273 A US 1908273A US 445207 A US445207 A US 445207A US 44520730 A US44520730 A US 44520730A US 1908273 A US1908273 A US 1908273A
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United States
Prior art keywords
acid
petroleum distillates
chlorite
sweetening
distillates
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Expired - Lifetime
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US445207A
Inventor
Maurice C Taylor
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Mathieson Alkali Works Inc
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Mathieson Alkali Works Inc
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Priority to US445207A priority Critical patent/US1908273A/en
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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
    • C10G27/00—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
    • C10G27/02—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with halogen or compounds generating halogen; Hypochlorous acid or salts thereof
    • 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
    • C10G29/00—Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/06—Metal salts, or metal salts deposited on a carrier

Definitions

  • salts of chlorous acid such as sodium chlorite and calcium chlorite
  • sodium chlorite and calcium chlorite are effective refining agents for petroleum distillates and may be used to produce petroleum distillates of good color, odor and stability.
  • degree of acidity is not important, I have found solutions having a pH value of about 4 to be advantageous.
  • the rapidity and extent of reaction between the chlorites and the objectionableconstituents of crude petroleum distillates such as sulfur compounds may be largely controlled by regulating the amount of acid agent, acid or acid salt, used in conjunction with the chlorite. With some distillates a pH of 4 in the treating solution may be sufficient. With other distillates it is preferable to use N/lO acid or stronger.
  • the acidity of the treating solution may be controlled by the additionof an acid or acid salt, such as hydrochloric acid or sulphuric acid or sodium acid sulfate or sodium acid phosphate.
  • an acid or acid salt such as hydrochloric acid or sulphuric acid or sodium acid sulfate or sodium acid phosphate.
  • the amount of the chlorite required for refining varies with and is determined by the character of the distillate being refined.
  • the concentration of the treating solution is not critical; in general lower concentrations of the chlorite are de sirable in conjunction with higher acidity.
  • the refining operation may be carried out as a batch operation or as a continuous operation in any convenient manner.
  • Acid chlorite solutions apparently react with many of the sulphur compounds occurring in petroleum distillates to convert the sulphur of such compounds into reaction products soluble in water and thus susceptible of removal in the water of the treating solu- Application filed April 17,
  • alkali-metal chlorites or alkalineearth-metal chlorites are particularly useful in carrying out my invention, the other salts of chlorous acid and chlorous acid'itself are also useful in carrying out my invention, the
  • chlorite radical being the essential component.
  • the improvement which comprises subjecting the distillate to treatment with an acid aqueous solution of a chlorite of a metal of the group comprising the alkali-metals and the alka line-earth-metals.

Description

Patented May 9, 1933 UNITED STATES MAURICE G. TAYLOR, OF NIAGARA FALLS, NEW YORK, ASSIG-NOR TO THE MATHIESON PATENT OFFICE ALKALI WORKS, INC., OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA SWEETENING PETROLEUM DISTILLATES No Drawing.
of salts of chlorous acid, such as sodium chlorite and calcium chlorite, are effective refining agents for petroleum distillates and may be used to produce petroleum distillates of good color, odor and stability. Although the exact degree of acidity is not important, I have found solutions having a pH value of about 4 to be advantageous. The rapidity and extent of reaction between the chlorites and the objectionableconstituents of crude petroleum distillates such as sulfur compounds may be largely controlled by regulating the amount of acid agent, acid or acid salt, used in conjunction with the chlorite. With some distillates a pH of 4 in the treating solution may be sufficient. With other distillates it is preferable to use N/lO acid or stronger. The acidity of the treating solution may be controlled by the additionof an acid or acid salt, such as hydrochloric acid or sulphuric acid or sodium acid sulfate or sodium acid phosphate. The amount of the chlorite required for refining varies with and is determined by the character of the distillate being refined. The concentration of the treating solution is not critical; in general lower concentrations of the chlorite are de sirable in conjunction with higher acidity. The refining operation may be carried out as a batch operation or as a continuous operation in any convenient manner.
For example: 100 parts of a gasolene distillate are placed in a suitable agitator with 40 parts of N/ 10 hydrochloric acid. The agitator is started and 2 parts of a calcium chlorite solution containing 68 grams of Ca (C10 2 per liter are added every 15 minutes until 24 parts have been added. A gasolene sweet to the Doctor test and of good color is produced.
Acid chlorite solutions apparently react with many of the sulphur compounds occurring in petroleum distillates to convert the sulphur of such compounds into reaction products soluble in water and thus susceptible of removal in the water of the treating solu- Application filed April 17,
1930. Serial No. 445,207.
tion or in the water of subsequent washes. Acid chlorite solutions, however, react to but a very slight extent, if at all, upon those hydrocarbon constituents of the petroleum distillate suitable as components of the refined product."
While alkali-metal chlorites or alkalineearth-metal chlorites are particularly useful in carrying out my invention, the other salts of chlorous acid and chlorous acid'itself are also useful in carrying out my invention, the
chlorite radical being the essential component.
I claim: 1. In sweetening petroleum distillates, the improvement which comprises subjecting the distillate to treatment with an acid aqueous solution of a chlorite of a metal of the group comprising the alkali-metals and the alka line-earth-metals.
2. In sweetening petroleum distillates, the
improvement which comprises subjecting the distillate to treatment with an acid aqueous
US445207A 1930-04-17 1930-04-17 Sweetening petroleum distillates Expired - Lifetime US1908273A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527176A (en) * 1946-10-04 1950-10-24 Standard Oil Dev Co Treatment of oils corrosive to copper
EP0389150A1 (en) * 1989-03-21 1990-09-26 Baker Hughes Incorporated Removal of sulphides

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2527176A (en) * 1946-10-04 1950-10-24 Standard Oil Dev Co Treatment of oils corrosive to copper
EP0389150A1 (en) * 1989-03-21 1990-09-26 Baker Hughes Incorporated Removal of sulphides
US5082576A (en) * 1989-03-21 1992-01-21 Bp Chemicals Limites Removal of sulfides using chlorite and an amphoteric ammonium betaine

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