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WO2015044290A1 - Fischer-tropsch derived gas oil fraction - Google Patents

Fischer-tropsch derived gas oil fraction Download PDF

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Publication number
WO2015044290A1
WO2015044290A1 PCT/EP2014/070526 EP2014070526W WO2015044290A1 WO 2015044290 A1 WO2015044290 A1 WO 2015044290A1 EP 2014070526 W EP2014070526 W EP 2014070526W WO 2015044290 A1 WO2015044290 A1 WO 2015044290A1
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WO
WIPO (PCT)
Prior art keywords
fischer
gas oil
tropsch derived
derived gas
oil fraction
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.)
Ceased
Application number
PCT/EP2014/070526
Other languages
French (fr)
Inventor
Rendert Jan Wiersma
Johannes TURFBOER
Robert RIEMERSMA
Johannes Bernardus Wilhelmus Morsink
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.)
Shell Internationale Research Maatschappij BV
Shell USA Inc
Original Assignee
Shell Internationale Research Maatschappij BV
Shell Oil Co
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Filing date
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Publication of WO2015044290A1 publication Critical patent/WO2015044290A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
    • C10G2/30—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/14—Organic compounds
    • C10L1/16—Hydrocarbons
    • C10L1/1616—Hydrocarbons fractions, e.g. lubricants, solvents, naphta, bitumen, tars, terpentine
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/30—Physical properties of feedstocks or products
    • C10G2300/301—Boiling range
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/30—Physical properties of feedstocks or products
    • C10G2300/302—Viscosity
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/30—Physical properties of feedstocks or products
    • C10G2300/308—Gravity, density, e.g. API
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2200/00—Components of fuel compositions
    • C10L2200/04—Organic compounds
    • C10L2200/0461—Fractions defined by their origin
    • C10L2200/0469—Renewables or materials of biological origin
    • C10L2200/0492—Fischer-Tropsch products
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2270/00—Specifically adapted fuels
    • C10L2270/08—Specifically adapted fuels for small applications, such as tools, lamp oil, welding
    • 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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C10L2290/543—Distillation, fractionation or rectification for separating fractions, components or impurities during preparation or upgrading of a fuel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/17—Fisher Tropsch reaction products
    • C10M2205/173—Fisher Tropsch reaction products used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/011—Cloud point
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/015—Distillation range
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/017—Specific gravity or density
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/069—Linear chain compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/071—Branched chain compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/081—Biodegradable compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/64—Environmental friendly compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2070/00—Specific manufacturing methods for lubricant compositions

Definitions

  • the present invention relates to a fractionated Fischer-Tropsch derived gas oil and a functional fluid formulation comprising the same.
  • Fischer-Tropsch derived gas oil fractions may be obtained by various processes.
  • a Fischer-Tropsch derived gas oil fraction is obtained using the so-called Fischer- Tropsch process.
  • An example of such process is disclosed in WO 02/070628.
  • the present invention provides a
  • Fischer-Tropsch gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 180°C.
  • An advantage of the present invention is that the Fischer-Tropsch derived gas oil fraction has surprisingly a low viscosity, low pour point while having a high flash point, which combination of properties provides
  • the Fischer-Tropsch derived gas oil fraction according to the present invention has very low levels of aromatics, naphthenics and impurities.
  • Fischer-Tropsch derived gas oil fraction thus improves the biodegradability and offers lower toxicity in solvent and/or functional fluid
  • Fischer-Tropsch derived gas oil fraction is derived from a Fischer-Tropsch process.
  • Fischer-Tropsch derived gas oil is known in the art.
  • Fischer-Tropsch derived gas oil is known in the art.
  • a gas oil is, or is derived from, a synthesis product of a Fischer-Tropsch process.
  • synthesis gas is converted to a synthesis product.
  • Synthesis gas or syngas is a mixture of hydrogen and carbon monoxide that is obtained by conversion of a hydrocarbonaceous feedstock. Suitable feedstock include natural gas, crude oil, heavy oil fractions, coal, biomass and lignite.
  • a Fischer-Tropsch derived gas oil may also be referred to as a GTL (Gas-to- Liquids) gas oil.
  • Fischer-Tropsch derived gas oils are primarily iso- paraffins .
  • the Fischer-Tropsch derived gas oil comprises more than 75 wt . % of iso-paraffins ,
  • a fraction of the Fischer Tropsch gasoil is a narrower boiling range distillation cut of the Fischer Tropsch gasoil and may also be seen as a GTL derived solvents distilled from the Fischer Tropsch gasoil.
  • the Fischer- Tropsch derived gas oil fraction has an initial boiling point of at least 145°C and a final boiling point of at most 180°C at atmospheric conditions.
  • the initial boiling point of at least 145°C and a final boiling point of at most 180°C at atmospheric conditions.
  • Fischer-Tropsch derived gas oil fraction has an initial boiling point of at least 149°C at atmospheric
  • the Fischer-Tropsch derived gas oil fraction preferably has an initial boiling point of at least 147°C. at atmospheric conditions.
  • boiling points at atmospheric conditions is meant atmospheric boiling points, which boiling points are determined by ASTM D86.
  • the Fischer-Tropsch derived paraffin gas oil comprises preferably at least 70 wt.%, more preferably at least 85 wt.%, more preferably at least 90 wt.%, more preferably at least 95 wt.%, and most preferably at least 98 wt.% of Fischer-Tropsch derived paraffins having 7 to
  • fraction preferably has a density at 15°C according to ASTM D4052 from 732 kg/m 3 to 738 kg/m 3 , more preferably from 733 kg/m 3 to 737 kg/m 3 , and most preferably from 734 kg/m 3 to 736 kg/m 3 .
  • the kinematic viscosity at 25°C according to ASTM D445 is from 0.75 to 1.05 cSt, preferably from 0.80 cSt to 1.00 cSt, and more preferably from 0.85 cSt to 0.95 cSt.
  • the flash point of the Fischer-Tropsch derived gas oil fraction has a flash point according to
  • ASTM D93 from 25 to 40°C, more preferably from 27 to 38 °C, and most preferably from 29 to 37°C.
  • the Fischer-Tropsch derived gas oil fraction has a smoke point according to ASTM D1322 of more than 50 mm.
  • the Fischer-Tropsch gas oil fraction according to the present invention comprises less than 500 ppm aromatics, preferably less than 200 ppm
  • aromatics less than 3 ppm sulphur, preferably less than 1 ppm sulphur, more preferably less than 0.2 ppm sulphur, less than 1 ppm nitrogen and less than 5 wt . %
  • naphthenics preferably less than 4 wt . % and more
  • fraction preferably comprises less than 0.1 wt . %
  • polycyclic aromatic hydrocarbons more preferably less than 25 ppm polycyclic aromatic hydrocarbons and most preferably less than 1 ppm polycyclic aromatic
  • the amount of isoparaffins is suitably more than 50 wt% based on the total amount of paraffins having from 7 to 12 carbon atoms, preferably more than 55 wt%.
  • the Fischer-Tropsch derived gas oil may comprise n-paraffins and cyclo-alkanes .
  • Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 180°C has been described in e.g. WO02/070628.
  • the present invention provides a functional fluid formulation comprising a Fischer- Tropsch derived gas oil fraction according to the present invention, further containing an additive compound.
  • the functional fluid formulations may be used in many areas, for instances oil and gas exploration and production, construction industry, food and related industries, paper, textile and leather, and various household and consumer products.
  • the type of additives used in the functional fluid formulation according to the present invention is dependent on the type of fluid formulation.
  • Additives for functional fluid formulations include, but are not limited to, corrosion and rheology control products, emulsifiers and wetting agents, borehole stabilizers, high pressure and anti-wear additives, de- and anti-foaming agents, pour point depressants, and antioxidants.
  • Fischer-Tropsch derived gas oil fraction has a low viscosity, low pour point while having a high flash point.
  • Fischer-Tropsch derived gas oil fraction is highly desirable for its use in functional fluid formulations with low viscosity requirements.
  • the temperature of the drilling fluid may decrease which may lead to an increase of the viscosity of the drilling fluid.
  • the high viscosity may be harmful for the beneficial use of the drilling fluid. Therefore, the Fischer-Tropsch derived gas oil fraction according to the present invention with a low viscosity and high flash point is highly desirable for its use in drilling fluid applications.
  • the present invention provides the use of the Fischer-Tropsch derived gas oil fraction according to the present invention as a diluent oil or base oil for solvent and/or functional fluid
  • diluent oil is meant an oil used to decrease viscosity and/or improve other properties of solvent and functional fluid formulations.
  • base oil an oil to which other oils, solvents or substances are added to produce a solvent or functional fluid formulation.
  • Fischer-Tropsch derived gas oil fraction as a diluent oil or base oil for solvent and/or functional fluid formulations are the same as described above for functional fluid formulations comprising the Fischer-Tropsch derived gas oil fraction according the present invention, further containing an additive compound.
  • diluent oil or base oil examples include, but is not limited to, heating fuels, water treatment, cleaners, polishes, car dewaxers, metal cleaning, printing inks, polymer processing oils, and paint and coatings, adhesives, sealants, and air
  • the present invention provides the use of the Fischer-Tropsch derived gas oil fraction according to the present invention for improving
  • the Fischer-Tropsch derived gas oil fraction has preferably very low levels of aromatics, sulphur, nitrogen compounds and is preferably free from polycyclic aromatic hydrocarbons. These low levels may lead to, but are not limited to, low aquatic toxicity, low sediment organism toxicity and low terrestrial ecotoxicity of the Fischer-Tropsch derived gas oil fraction.
  • the molecular structure of the Fischer-Tropsch derived gas oil fraction according to the present invention may lead to the readily biodegradability of the Fischer-Tropsch derived gas oil.
  • a Fischer-Tropsch product was prepared in a process similar to the process as described in Example VII of WO-A-9934917, using the catalyst of Example III of
  • step (a) The C5+ fraction contained about 60 wt% C30+ product.
  • the hydrocracking step the fraction was contacted with a hydrocracking catalyst of Example 1 of EP-A-532118.
  • the effluent of step (a) was continuously distilled under vacuum to give light products, fuels and a residue "R" boiling from 370 °C and above.
  • WHSV Weight Hourly Space Velocity
  • Fischer-Tropsch derived gas oil fraction as a diluent oil/base oil for solvent and/or functional fluid applications .
  • the properties of the Fischer-Tropsch derived gas oil as given in tables 1 to 2 are the critical properties for the advantage use of the Fischer-Trospch derived gas oil in, heating fuels, lighters, water treatment, cleaners, polishes, car dewaxers, metal cleaning, forming oils , printing inks, polymer processing oils, paint and coatings, adhesives, sealants, and air fresheners.
  • Fischer-Tropsch derived gas oil fraction is more desirable for its use in solvent and functional fluid formulations with low viscosity

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)
  • Cosmetics (AREA)

Abstract

The present invention provides a Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 80°C. In another aspect the present invention provides a functional fluid formulation comprising a Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 80°C.

Description

FISCHER-TROPSCH DERIVED GAS OIL FRACTION
The present invention relates to a fractionated Fischer-Tropsch derived gas oil and a functional fluid formulation comprising the same.
Fischer-Tropsch derived gas oil fractions may be obtained by various processes. A Fischer-Tropsch derived gas oil fraction is obtained using the so-called Fischer- Tropsch process. An example of such process is disclosed in WO 02/070628.
It has now surprisingly been found that specific Fischer-Tropsch derived gas oil fractions can be
advantageously used in solvent and functional fluid applications .
To this end, the present invention provides a
Fischer-Tropsch gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 180°C.
An advantage of the present invention is that the Fischer-Tropsch derived gas oil fraction has surprisingly a low viscosity, low pour point while having a high flash point, which combination of properties provides
advantages in solvent and functional fluid applications with low viscosity requirements.
Typically, the Fischer-Tropsch derived gas oil fraction according to the present invention has very low levels of aromatics, naphthenics and impurities.
The use of the Fischer-Tropsch derived gas oil fraction thus improves the biodegradability and offers lower toxicity in solvent and/or functional fluid
applications .
The Fischer-Tropsch derived gas oil fraction according to the present invention is derived from a Fischer-Tropsch process. Fischer-Tropsch derived gas oil is known in the art. By the term "Fischer-Tropsch
derived" is meant that a gas oil, is, or is derived from, a synthesis product of a Fischer-Tropsch process. In a Fischer-Tropsch process synthesis gas is converted to a synthesis product. Synthesis gas or syngas is a mixture of hydrogen and carbon monoxide that is obtained by conversion of a hydrocarbonaceous feedstock. Suitable feedstock include natural gas, crude oil, heavy oil fractions, coal, biomass and lignite. A Fischer-Tropsch derived gas oil may also be referred to as a GTL (Gas-to- Liquids) gas oil.
Fischer-Tropsch derived gas oils are primarily iso- paraffins . Preferably, the Fischer-Tropsch derived gas oil comprises more than 75 wt . % of iso-paraffins ,
preferably more than 80 wt . % .
A fraction of the Fischer Tropsch gasoil is a narrower boiling range distillation cut of the Fischer Tropsch gasoil and may also be seen as a GTL derived solvents distilled from the Fischer Tropsch gasoil.
According to the present invention, the Fischer- Tropsch derived gas oil fraction has an initial boiling point of at least 145°C and a final boiling point of at most 180°C at atmospheric conditions. Suitably, the
Fischer-Tropsch derived gas oil fraction has an initial boiling point of at least 149°C at atmospheric
conditions. Further, the Fischer-Tropsch derived gas oil fraction preferably has an initial boiling point of at least 147°C. at atmospheric conditions.
The Fischer-Tropsch derived gas oil fraction
preferably has a final boiling point of at least 176°C and a final boiling point of at most 178°C at atmospheric conditions . By boiling points at atmospheric conditions is meant atmospheric boiling points, which boiling points are determined by ASTM D86.
The Fischer-Tropsch derived gas oil fraction
comprises preferably paraffins having from 7 to 12 carbon atoms; the Fischer-Tropsch derived paraffin gas oil comprises preferably at least 70 wt.%, more preferably at least 85 wt.%, more preferably at least 90 wt.%, more preferably at least 95 wt.%, and most preferably at least 98 wt.% of Fischer-Tropsch derived paraffins having 7 to
12 carbon atoms based on the total amount of Fischer- Tropsch derived paraffins, preferably based on the amount of Fischer-Tropsch derived paraffins having from 6 to 13 carbon atoms .
Further, the Fischer-Tropsch derived gas oil
fraction preferably has a density at 15°C according to ASTM D4052 from 732 kg/m3 to 738 kg/m3, more preferably from 733 kg/m3 to 737 kg/m3, and most preferably from 734 kg/m3 to 736 kg/m3.
Suitably, the kinematic viscosity at 25°C according to ASTM D445 is from 0.75 to 1.05 cSt, preferably from 0.80 cSt to 1.00 cSt, and more preferably from 0.85 cSt to 0.95 cSt.
Preferably, the flash point of the Fischer-Tropsch derived gas oil fraction has a flash point according to
ASTM D93 from 25 to 40°C, more preferably from 27 to 38 °C, and most preferably from 29 to 37°C.
The Fischer-Tropsch derived gas oil fraction has a smoke point according to ASTM D1322 of more than 50 mm.
Typically, the Fischer-Tropsch gas oil fraction according to the present invention comprises less than 500 ppm aromatics, preferably less than 200 ppm
aromatics, less than 3 ppm sulphur, preferably less than 1 ppm sulphur, more preferably less than 0.2 ppm sulphur, less than 1 ppm nitrogen and less than 5 wt . %
naphthenics, preferably less than 4 wt . % and more
preferably less than 3.5 wt . %
Further, the Fischer-Tropsch derived gas oil
fraction preferably comprises less than 0.1 wt . %
polycyclic aromatic hydrocarbons, more preferably less than 25 ppm polycyclic aromatic hydrocarbons and most preferably less than 1 ppm polycyclic aromatic
hydrocarbons.
The amount of isoparaffins is suitably more than 50 wt% based on the total amount of paraffins having from 7 to 12 carbon atoms, preferably more than 55 wt%.
Further, the Fischer-Tropsch derived gas oil may comprise n-paraffins and cyclo-alkanes .
The preparation of the Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 180°C has been described in e.g. WO02/070628.
In a further aspect, the present invention provides a functional fluid formulation comprising a Fischer- Tropsch derived gas oil fraction according to the present invention, further containing an additive compound.
Typically, the functional fluid formulations may be used in many areas, for instances oil and gas exploration and production, construction industry, food and related industries, paper, textile and leather, and various household and consumer products. Further, the type of additives used in the functional fluid formulation according to the present invention is dependent on the type of fluid formulation. Additives for functional fluid formulations include, but are not limited to, corrosion and rheology control products, emulsifiers and wetting agents, borehole stabilizers, high pressure and anti-wear additives, de- and anti-foaming agents, pour point depressants, and antioxidants.
An advantage of the use of Fischer-Tropsch derived gas oil fraction in functional fluid formulations is that the Fischer-Tropsch derived gas oil fraction has a low viscosity, low pour point while having a high flash point. Preferably, this combination of physical
characteristics of Fischer-Tropsch derived gas oil fraction is highly desirable for its use in functional fluid formulations with low viscosity requirements.
For example, in drilling fluid applications, during use, the temperature of the drilling fluid may decrease which may lead to an increase of the viscosity of the drilling fluid. The high viscosity may be harmful for the beneficial use of the drilling fluid. Therefore, the Fischer-Tropsch derived gas oil fraction according to the present invention with a low viscosity and high flash point is highly desirable for its use in drilling fluid applications.
In another aspect, the present invention provides the use of the Fischer-Tropsch derived gas oil fraction according to the present invention as a diluent oil or base oil for solvent and/or functional fluid
applications.
With the term diluent oil is meant an oil used to decrease viscosity and/or improve other properties of solvent and functional fluid formulations.
With the term base oil is meant an oil to which other oils, solvents or substances are added to produce a solvent or functional fluid formulation.
The advantages of the use of the Fischer-Tropsch derived gas oil fraction as a diluent oil or base oil for solvent and/or functional fluid formulations are the same as described above for functional fluid formulations comprising the Fischer-Tropsch derived gas oil fraction according the present invention, further containing an additive compound.
Preferred solvent and/or functional fluid
applications using the Fischer-Tropsch gas oil fraction according to the present invention as diluent oil or base oil include, but is not limited to, heating fuels, water treatment, cleaners, polishes, car dewaxers, metal cleaning, printing inks, polymer processing oils, and paint and coatings, adhesives, sealants, and air
fresheners .
Typical solvent and functional fluid applications are for example described in "The Index of Solvents",
Michael Ash, Irene Ash, Gower publishing Ltd, 1996, ISBN 0-566-07884-8 and in "Handbook of Solvents", George
Wypych, Willem Andrew publishing, 2001, ISBN 0-8155-1458- 1. In a further aspect, the present invention provides the use of the Fischer-Tropsch derived gas oil fraction according to the present invention for improving
biodegradability and lower toxicity in solvent and/or functional fluid applications.
As described above, the Fischer-Tropsch derived gas oil fraction has preferably very low levels of aromatics, sulphur, nitrogen compounds and is preferably free from polycyclic aromatic hydrocarbons. These low levels may lead to, but are not limited to, low aquatic toxicity, low sediment organism toxicity and low terrestrial ecotoxicity of the Fischer-Tropsch derived gas oil fraction. The molecular structure of the Fischer-Tropsch derived gas oil fraction according to the present invention may lead to the readily biodegradability of the Fischer-Tropsch derived gas oil.
The present invention is described below with reference to the following Examples, which are not intended to limit the scope of the present invention in any way.
Examples
Example 1
Preparation of a Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 180°C
A Fischer-Tropsch product was prepared in a process similar to the process as described in Example VII of WO-A-9934917, using the catalyst of Example III of
WO-A-9934917. The C5+ fraction (liquid at ambient
conditions) of the product thus obtained was continuously fed to a hydrocracking step (step (a) ) . The C5+ fraction contained about 60 wt% C30+ product. The ratio C5Q+/C3Q+ was about 0.55. In the hydrocracking step the fraction was contacted with a hydrocracking catalyst of Example 1 of EP-A-532118. The effluent of step (a) was continuously distilled under vacuum to give light products, fuels and a residue "R" boiling from 370 °C and above. The
conversion of the product boiling above 370 °C into product boiling below 370 °C was between 45 and 55 wt%. The residue "R" was recycled to step (a) . The conditions in the hydrocracking step (a) were: a fresh feed Weight Hourly Space Velocity (WHSV) of 0.8 kg/l.h, recycle feed WHSV of 0.4 kg/l.h, hydrogen gas rate = 1000 Nl/kg, total pressure = 40 bar, and a reactor temperature in the range of from 330 °C to 340 °C. The obtained fuels fraction (C5+- 370°C) was
continuously distilled at conditions as given in Table 1 to give a gas oil fraction as the bottom product.
The physical properties are given in Tables 1 and 2. Table 1
Figure imgf000009_0001
Table 2
Fischer-Tropsch derived gas oil fraction
Kinematic viscosity at 0.95
25°C
According to ASTM D445
[mm2/s ]
content of aromatics 685
According to SMS 2728
[mg/kg]
content of n-paraffins 42.36
according to GCxGC - internal testing
methodology
[%m/m]
content of isoparaffins 54.76
according to GCxGC - internal testing
methodology
[% m/m] Density at 15°C 776
according ASTM D4052
[kg/m3]
Flash point according to 30
ASTM D93
[°C]
Visual Appearance Clear and bright
Example 2
Use of Fischer-Tropsch derived gas oil fraction as a diluent oil/base oil for solvent and/or functional fluid applications .
The properties of the Fischer-Tropsch derived gas oil as given in tables 1 to 2 are the critical properties for the advantage use of the Fischer-Trospch derived gas oil in, heating fuels, lighters, water treatment, cleaners, polishes, car dewaxers, metal cleaning, forming oils , printing inks, polymer processing oils, paint and coatings, adhesives, sealants, and air fresheners.
Example 3
In table 3 the properties of the Fischer-Tropsch derived gas oil fraction according to the present invention was compared with the properties of Isopar™ G.
Table 3
Fischer-Tropsch Isopar™ G* derived gas oil
n- paraffins 42.36 0.2 according to GCxGC
- internal testing
methodology
[%m/m]
isoparaffins 54.76 98.3 according to GCxGC
- internal testing
methodology
[%m/m]
Total paraffins 97.12 98.5
Naphthenics 2.75 1.3 according to GCxGC
- internal testing
methodology
[%m/m]
Flash point 30 44
According to ASTM
D93 (°C)
Density at 15°C 776 50
according to ASTM
D4052
Viscosity at 25°C 0.95 1.14 according to ASTM
D445 (mm2/s)
IBP according to 130 167
ASTM D86
(°C)
FBP according to 170 176 ASTM D86
(°C)
Aromatics 685 <50
according to SMS
2728 (mg/kg)
*Data for Isopar™ G are obtained from a brochure published by Imperial oil Products and Chemicals
Division issued in October 2010
Discussion
The results in table 2 show that a Fischer-Tropsch derived gas oil fraction with a low viscosity and high flash point was obtained.
The results in table 3 show that the Fischer-Tropsch derived gas oil fraction has a lower kinematic viscosity than the Isopar™ G fraction at comparable initial boiling point and flash point.
This indicates that the Fischer-Tropsch derived gas oil fraction is more desirable for its use in solvent and functional fluid formulations with low viscosity
requirements compared to the use of Isopar™ G fraction in the same formulations.

Claims

C L A I M S
1. Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 145°C and a final boiling point of at most 180°C.
2. Fischer-Tropsch derived gas oil fraction according to claim 1, having an initial boiling point of at least 149°C.
3. Fischer-Tropsch derived gas oil fraction according to claim 1 or 2, having a final boiling point of at least
176°C and for at most 178°C.
4. Fischer-Tropsch derived gas oil fraction according to any one of claims 1 to 3, having a density at 15°C according to ASTM D4052 from 732 to 738 kg/m3, preferably from 733 to 737 kg/m3, more preferably from 734 to 736 kg/m3.
5. Fischer-Tropsch derived gas oil fraction according to any one of claims 1 to 4, having a kinematic viscosity at 25°C according to ASTM D445 from 0.75 to 1.05 cSt, preferably from 0.80 to 1.00 cSt, and more preferably from 0.85 to 0.95 cSt.
6. Fischer-Tropsch derived gas oil fraction according to any one of claims 1 to 5, having a a flash point
according to ASTM D93 from 25 to 40°, preferably from 27 to 38°C, more preferably from 29 to 27°C.
7. Fischer-Tropsch derived gas oil fraction according to any one of claims 1 to 6, having a smoke point according to ASTM D1322 of more than 50 mm.
8. Functional fluid formulation comprising a Fischer- Tropsch derived gas oil fraction according to any one of claims 1 to 7, further containing an additive compound.
9. Use of a Fischer-Tropsch derived gas oil fraction as defined according to one of more of the preceding claims 1 to 8 as a diluent oil or base oil for solvent and/or functional fluid formulations.
10. Use of a Fischer-Tropsch derived gas oil fraction as defined according to one or more of the preceding claims 1 to 9 for improving biodegradability and lower toxicity in solvent and/or functional fluid applications.
PCT/EP2014/070526 2013-09-30 2014-09-25 Fischer-tropsch derived gas oil fraction Ceased WO2015044290A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096940A (en) * 1995-12-08 2000-08-01 Exxon Research And Engineering Company Biodegradable high performance hydrocarbon base oils
WO2002070628A2 (en) * 2001-03-05 2002-09-12 Shell Internationale Research Maatschappij B.V. Process for the preparation of middle distillates

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096940A (en) * 1995-12-08 2000-08-01 Exxon Research And Engineering Company Biodegradable high performance hydrocarbon base oils
WO2002070628A2 (en) * 2001-03-05 2002-09-12 Shell Internationale Research Maatschappij B.V. Process for the preparation of middle distillates

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ULLRICH JAHN: "Nonan", 1 April 2011 (2011-04-01), pages 1 - 2, XP002716049, Retrieved from the Internet <URL:https://roempp.thieme.de/roempp4.0/do/data/RD-14-01608> [retrieved on 20131108] *

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