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US1823594A - Fuel oil - Google Patents

Fuel oil Download PDF

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Publication number
US1823594A
US1823594A US247264A US24726428A US1823594A US 1823594 A US1823594 A US 1823594A US 247264 A US247264 A US 247264A US 24726428 A US24726428 A US 24726428A US 1823594 A US1823594 A US 1823594A
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US
United States
Prior art keywords
fuel oil
viscosity
fuel
oil
tar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US247264A
Inventor
Sterling H Diggs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Standard Oil Co
Original Assignee
Standard Oil Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Oil Co filed Critical Standard Oil Co
Priority to US247264A priority Critical patent/US1823594A/en
Application granted granted Critical
Publication of US1823594A publication Critical patent/US1823594A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10LFUELS 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
    • C10L1/00Liquid carbonaceous fuels

Definitions

  • Fuel oil produced in this manner is per se satisfactory for combustion in locomotive and other burners. It has, however, an outstanding disadvantage in that on mixing with certain standard fuels of the same gen eral type, an excessive quantity of bottom settlings is produced.
  • the amount of bottom settlings from the mixture may amount to several times the amount which would be anticipated from the bottom settlings of each of the .constituents.
  • An example of such a ,fuel oil is that produced from reduced pressure tar from Burton 0r Burton- Clark cracking stills.
  • This disadvantage has heretofore prevented the utilization of sludge tar for the production of commercial fuel because of the certainty that in actual practice, the two kinds of fuel would become mixed in supply tanks and storage tanks and the burners and feed-pipes would become choked. 1 f
  • sludge tar which apparently were responsible for the excessive settling from the mixed fuel oils.
  • Hi her temperatures may be employed, if desired, but are not necessary for the accomplishment of the desired result.
  • Sludge tar derived on separation from the aci layer and containing about of naphtha bottoms is heated to a high temper-' ature and the naphtha bottoms recovered and condensed.
  • the heating may be effected in a pipe still or in a shell still. When the latter is employed, it is preferred to inject a small amount of steam so as to give enough agitation to prevent the settling of insoluble matter on the bottom thereof. During this heating, the temperature is caused to rise above 500 F. and preferably between 550 and 600 F.
  • the viscosity of the residue is relatively unimportant and it varies considerably, for example, from 300 to 1000 furol at 122 F.
  • t e viscosity must usually not exceed furol at 122 F. and it is preferred to reduce' the viscosity to below 40, for example, 35 or lower.
  • the amount of diluent is relatively small, for example, a mixtureof 40% of oil having .aviscoslty of.l0- and 60% of an oil having a viscosity of 600 will" have a viscosity of about 35.
  • the method of producing fuel oil from acid sludge which consists in adding thereto. a h drocarbon oil of low viscosity and heating with agitation, separating the acid solution, heatin said hydrocarbon mixtureto expel the ad ed hydrocarbons of low viscosit raising the temperature to between 500 an 600 with a residual fuel from a cracking operation of the Burton type, to give a blended fuel of desired viscosity.

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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)

Description

Patented Sept. 15, 1931 UNITED STATES PATENT OFFICE STERLING H. DIGGS, OF CASPER, WYOMING, ASSIGNOR TO STANDARD OIL CO HPANY,
- OF WRITING, INDIANA, A OORPORATION OF INDIANA FUEL OIL No Drawing.
divides into a lower aqueous layer consisting mainly of dilute sulfuric acid. and a supernatant layer of oily and tarry substances.
In converting the acidsludge tar into fuel oil, for example, railroad fuel oil, it has heretofore been the practice to reduce the tar 5 with steam so as to recover valuable naphtha bottoms therefrom and to cut-back the residue to the desired viscosity with a cheap diluent to give a fuel of satisfactory viscosity. Suitable cut-backs are high sulfur gas oil, and reduced high pressure tar.
Fuel oil produced in this manner is per se satisfactory for combustion in locomotive and other burners. It has, however, an outstanding disadvantage in that on mixing with certain standard fuels of the same gen eral type, an excessive quantity of bottom settlings is produced. Thus, when such a fuel oil is mixed with a railroad fuel derived from a residue containing large quantities of waxy and asphaltic materials, the amount of bottom settlings from the mixture may amount to several times the amount which would be anticipated from the bottom settlings of each of the .constituents. An example of such a ,fuel oil is that produced from reduced pressure tar from Burton 0r Burton- Clark cracking stills. This disadvantage has heretofore prevented the utilization of sludge tar for the production of commercial fuel because of the certainty that in actual practice, the two kinds of fuel would become mixed in supply tanks and storage tanks and the burners and feed-pipes would become choked. 1 f
It has now been discovered that this difliculty can be completely avoided by conduct- 4 ing the reduction of the slude tar under such conditions that the temperature exceeds 500 and preferably attains temperatures between 550 and 600 F. The result of this high tem -s ecifications results.
Application filed. January 16, 1928. Serial N0.'247,284.
perature seems to be the breaking up of oxygen and sulfur compounds present in the.
sludge tar, which apparently were responsible for the excessive settling from the mixed fuel oils. Hi her temperatures may be employed, if desired, but are not necessary for the accomplishment of the desired result.
The invention will be readily understood from the following description of a. preferred example. Sludge tar derived on separation from the aci layer and containing about of naphtha bottoms is heated to a high temper-' ature and the naphtha bottoms recovered and condensed. The heating. may be effected in a pipe still or in a shell still. When the latter is employed, it is preferred to inject a small amount of steam so as to give enough agitation to prevent the settling of insoluble matter on the bottom thereof. During this heating, the temperature is caused to rise above 500 F. and preferably between 550 and 600 F. The viscosity of the residue is relatively unimportant and it varies considerably, for example, from 300 to 1000 furol at 122 F. The steam-reduced taris now out back by addition of an oil of less viscosity until a fuel oil meeting the For railroad fuels, t e viscosity must usually not exceed furol at 122 F. and it is preferred to reduce' the viscosity to below 40, for example, 35 or lower. The amount of diluent is relatively small, for example, a mixtureof 40% of oil having .aviscoslty of.l0- and 60% of an oil having a viscosity of 600 will" have a viscosity of about 35.
In actual practice, it is desired to blend the reduced steam tar or bottoms with other fuel oils, for example, a fuel oil having a viscosity of about 25 furol at 122 F. de-
Burton or v water, hydrocarbon constituents from the aqueous aqueous acid solution, heating said hydrocarbon mixture to expel the added hydrocarbons of low viscosity, raising the temperature to between 500 and 600 F., and cutting-back the residue with fuel oil constituents of relatively low viscosity to give a blended fuel of desired viscosity.
2. The method of producing fuel oil from acid sludge which consists in adding thereto. a h drocarbon oil of low viscosity and heating with agitation, separating the acid solution, heatin said hydrocarbon mixtureto expel the ad ed hydrocarbons of low viscosit raising the temperature to between 500 an 600 with a residual fuel from a cracking operation of the Burton type, to give a blended fuel of desired viscosity.
3. The method of making fuel oil which consists in separating a hydrocarbon layer conta' oxygen and sulfur compounds from aci slu ge, heating said layer of hydrocarbon compounds to a temperature between about 500 and about 600 F., thereby driving OK the more volatile constituents,
and cuttin -back the residue to a desired viscosity with fuel oil constituents of relatively low viscosity.
4. The process of converting acid sludge tar containing insolubilizing oxygen and sulfur compounds into an. oil which may be mixed with fuel oils without mutual precipitation of objectionable slud ge compounds comprising heating said acid tar above a temperature of about 500 F. and not substantially above 600 whereb said oxygen and sulfur compounds are ecomposed and then reducing the viscosity of the resulting oil by adding a small proportion of a low viscosit fuel oil.
TERLING H. DIGGS.
and mixing the residue
US247264A 1928-01-16 1928-01-16 Fuel oil Expired - Lifetime US1823594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US247264A US1823594A (en) 1928-01-16 1928-01-16 Fuel oil

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Application Number Priority Date Filing Date Title
US247264A US1823594A (en) 1928-01-16 1928-01-16 Fuel oil

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909852C (en) * 1942-04-16 1954-04-26 Metallgesellschaft Ag Process for the production of hydrocarbons soluble in sulfuric acid
US3048473A (en) * 1957-11-13 1962-08-07 Allied Chem Process for the decomposition of acid sludge into sulfur dioxide, hydrogen sulfide, and hydrocarbons
US3976438A (en) * 1975-09-12 1976-08-24 Clifton McCleary, Jr. Gasoline additive and method for making same
US20070163921A1 (en) * 2006-01-13 2007-07-19 Keusenkothen Paul F Use of steam cracked tar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909852C (en) * 1942-04-16 1954-04-26 Metallgesellschaft Ag Process for the production of hydrocarbons soluble in sulfuric acid
US3048473A (en) * 1957-11-13 1962-08-07 Allied Chem Process for the decomposition of acid sludge into sulfur dioxide, hydrogen sulfide, and hydrocarbons
US3976438A (en) * 1975-09-12 1976-08-24 Clifton McCleary, Jr. Gasoline additive and method for making same
US20070163921A1 (en) * 2006-01-13 2007-07-19 Keusenkothen Paul F Use of steam cracked tar
WO2007087017A2 (en) * 2006-01-13 2007-08-02 Exxonmobil Chemical Patents Inc. Use of steam cracked tar
WO2007087017A3 (en) * 2006-01-13 2007-09-20 Exxonmobil Chem Patents Inc Use of steam cracked tar
US7906010B2 (en) 2006-01-13 2011-03-15 Exxonmobil Chemical Patents Inc. Use of steam cracked tar

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