Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
  • C10L1/00—Liquid carbonaceous fuels
  • C10L1/10—Liquid carbonaceous fuels containing additives
  • C10L1/14—Organic compounds
  • C10L1/22—Organic compounds containing nitrogen
• • 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
  • C10G73/04—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils with the use of filter aids

Definitions

• the present invention relates to an improvement in heavy fuel oils and other heavy residual products, containing waxy materials and which have highpour points in consequence, and more specifically to a method of stabilizing the pour points of these materials, and furthermore to oils of that character containing the stabilizing agents.
• the invention will be fully understood in the following description.
• Asphalts and asphaltic materials of the type found in heavy petroleum oils have mild pour inhibiting properties.
• This pour inhibiting action of asphaltenes has been familiar for some time and has been especially noted by the fact that when asphaltic materials are removed from the residual oilscontaining wax, their pour points invariably rise.
• Asphaltic materials are not nearly so potent, in respect to pour inhibiting, as the well known synthetics which are now used commercially in refined oils. Furthermore, asphaltenes raise the carbon residue of the oil so that such materials cannot be used in high grade products.
• the instability of pour point in 5 waxy fuels can be to a large extent corrected by the addition to the oil of a small amount of a certain class of materials, namely, the amines.
• the amine may be chosen from the classes of the aromatic or aliphatic amines which are soluble in the oil, and since only very small amounts are required, it is not necessary that they be very soluble.
• Amines containing only carbon, hydrogen and nitrogen are useful for the purpose, such as benzidine, toluidines, xylidines and the like, also alpha or beta naphthyl amine or other a1- kylated derivatives. Aniline is not very desirable being quite inferior to benzidines and toluidines.
• the mono-aliphatic amines it is desirable to use those containing more than about six carbon atoms, for example, hexyl amine, in order to prevent their loss by evaporation.
• Primary, secondary and tertiary amines are used and mixtures of any two of the groups.
• the poly-amines can be used-quite satisfactorily, or mixtures of them as well.
• the presence of a hydroxyl group, as in the amine compound, is not objectionable, and in many cases it is found to be highly advantageous, for example, in the case of an amino alcohol such as amino propanols or the alkylolamines.
• Aromatic hydroxy amines are also useful, such as amino phenols or the alkylated amino phenols.
• Thev aromatic amines may also belong to the primary, secondary or tertiarytypes.
• Mixed amines such as methyl, ethyl or hexyl phenyl amines will also serve the present purpose.
• the amount of the amino materials used in the present invention is not large, being in all cases below .5%, and usually between the limits of .01 to 20%. There is generally an optimum quantity for the use of the material which should not be exceeded because if more is used there is a reversal of the desired effect, and the finished material not only has the disadvantage of not having a stable pour point but also shows a marked tendency to precipitate. Within the above range, however, there is a possibility of variation in the amount. Increased amounts generally produce a greater effect, that is, maintain the pour point of the oil below the required temperature for a longer time until the optimum quantity is exceeded. With a satisfactory amount of the agent the pour point may be kept below any reasonable specification such as 20, 30, or
• Example III To another commercial fuel oil, containing asphaltenes and wax, is added .1% of diamino propanol. The sample showed a-pour test of 10 F.,
• kerosene, or lubricating oils which have been refined soas to be substantially free of asphaltenes.
• asphaltic materials are present in the fuel oils to such an extent that it is not required that any be added to reduce the pour point.
• such oils may be added together with the amine to accomplish the present purpose.
• the present invention is not limited to any theory of the action or combined action of the.
• An improved fuel oil comprising a heavy oil containing constituents that tend to vary its pour point and a small quantity of benzidene to stabilize the pour point.
• An improved fuel oil comprising a heavy oil containing constituents that tend to vary its pour point and a small quantity of diamino propanol to stabilize the pour point.
• An improved fuel oil comprising a heavy oil containing constituents that tend to vary its pour point and a small quantity of an amine of the class consisting of b'enzidene, hexyl phenyl amines, diamino propanol, naphthylamines and mono-aliphatic amines containing more than about 6 carbon atoms to stabilize the pour point.
• An improved fuel oil comprising a residual oil containing both asphalt and wax and a small quantity of diamino propanol to stabilize the pour point.

Landscapes

• 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)

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22406947

Family Applications (1)

Country Status (2)

Cited By (1)

• 0
  • NL NL51147D patent/NL51147C/xx active
• 1937
  • 1937-01-30 US US123143A patent/US2216230A/en not_active Expired - Lifetime

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