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EP0178199A1 - Asphalt enthaltende flüssige Zusammensetzung und Verfahren zu ihrer Herstellung - Google Patents

Asphalt enthaltende flüssige Zusammensetzung und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0178199A1
EP0178199A1 EP85401714A EP85401714A EP0178199A1 EP 0178199 A1 EP0178199 A1 EP 0178199A1 EP 85401714 A EP85401714 A EP 85401714A EP 85401714 A EP85401714 A EP 85401714A EP 0178199 A1 EP0178199 A1 EP 0178199A1
Authority
EP
European Patent Office
Prior art keywords
asphalt
asphalts
composition
fraction
fuel
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.)
Granted
Application number
EP85401714A
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English (en)
French (fr)
Other versions
EP0178199B1 (de
Inventor
François Audibert
Christian Busson
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0178199A1 publication Critical patent/EP0178199A1/de
Application granted granted Critical
Publication of EP0178199B1 publication Critical patent/EP0178199B1/de
Expired 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
    • 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

Definitions

  • the invention relates to a new process for the preparation of liquid combustible compositions, containing asphalt, and the combustion of which, with common industrial burners, is carried out with a reduced emission of unburnt particles.
  • these residual oils are diluted by hydrocarbon cuts from various sources, in particular direct distillation cuts (kerosene, diesel fuels) or effluents from cracking units, point boiling essentially between 150 and 400 ° C.
  • the heavy fuels thus prepared most often have high contents of Conradson carbon and of asphaltenes, which results, during combustion, in a significant emission of unburnt particles.
  • Residual oils usually consist of an oily fraction and an asphaltenic fraction.
  • the oily fraction which can be isolated by methods such as deasphalting with light aliphatic hydrocarbons (C 3 to C 7 for example), can be recovered by appropriate catalytic treatments.
  • the heavy fraction called the asphaltic fraction
  • the heavy fraction has very high asphaltenes and heavy metals contents; it can undergo various treatments intended to rid it of the deasphalting solvent and of the oily fraction that it may still contain and be isolated in the deasphalting units treating either crude oils or residual distillation fractions.
  • the residual fraction thus obtained is called asphalt.
  • the prior art discloses a certain number of processes based on the combustion of solid asphalts, alone or in mixture with other combustible products such as coal or biomass, or of asphalts dispersed in different media.
  • Japanese patent J 57,034,198 thus indicates the use of asphalt particles as fuel in blast furnace nozzles operating with an excess of hot air, a desulphurizing agent such as CaO being able to be used.
  • Japanese patent J 84,012,712 which describes a solid composition, based on oxidized asphalts and olefinic resins, and possibly on biomass such as sawdust. This composition can be used either as fuel in pulverulent form, or in liquid form after mixing with heavy oils.
  • Japanese patent J 59,006,290 also describes a solid "bio-fuel” composed of petroleum residues such as asphalts mixed with sawdust, shavings or chopped straw.
  • US Pat. No. 4,302,209 describes a solid fuel prepared by a mixture of ground lignite and asphalt in aqueous emulsion.
  • Patent W 082/01376 relates to a dispersion of particles containing carbon in a mixture of liquids; the liquid phase consists of water, hydrocarbon oil and surfactant, in the form of micro-emulsion.
  • the object of the present invention is to remedy this shortcoming by describing a new process making it possible to obtain, from asphalts, a liquid fuel usable in conventional boilers equipped with traditional industrial burners, by producing a reduced emission of unburnt particles. .
  • the relative proportions of asohalte and diluent are chosen so as to satisfy the preceding viscosity conditions. As a general rule, the higher the softening point, the greater the amount of diluent.
  • proportions by weight of asphalt (undiluted) and of diluent ranging from 20 to 80 parts of asphalt for 80 to 20 parts of diluent, fuels whose viscosity measured at 100 ° C. are obtained most of the time. is included in the range 20 mm 2 / s to 3000 mm 2 / s indicated above.
  • the method consists in mixing these with diluents, which are, conventionally, the diluents used for the preparation of heavy fuels. These diluents are in suitable proportion to obtain the viscosities indicated above.
  • diluents which are, conventionally, the diluents used for the preparation of heavy fuels. These diluents are in suitable proportion to obtain the viscosities indicated above.
  • a cut from a catalytic cracking unit is used, for example having a distillation range of between 150 and 400 ° C., commonly called "light cycle oil” (LCO). This type of distillation cut is generally obtained in traditional catalytic cracking units, such as, for example, catalytic cracking units in a fluidized bed.
  • LCO light cycle oil
  • These units generally treat feeds made up of vacuum diesel or deasphalted oil which are introduced into the reactor ("riser") in partially vaporized form, generally with superheated steam.
  • the most commonly used catalysts are of the zeolite type, the reactor temperature most often being of the order of 450 to 700 ° C. and the residence times preferably between 0.5 and 4 seconds.
  • the products obtained are separated from the catalyst, which is regenerated in the presence of oxygen.
  • the effluents are separated by distillation, of which about 40 to 60% are constituted by gasolines and about 15 to 30% constitute the "light cycle oil”; it is a very aromatic diesel type cut with a poor cetane number, the main use of which is to serve as a diluent for obtaining heavy fuels.
  • the assembly is brought to a temperature generally between 150 and 300 ° C, and preferably between 220 and 275 ° C and is maintained in this area for a period of at least 0.5 hour and usefully between 0.5 and 10 h, and preferably between 1.5 and 4 h.
  • a temperature generally between 150 and 300 ° C, and preferably between 220 and 275 ° C and is maintained in this area for a period of at least 0.5 hour and usefully between 0.5 and 10 h, and preferably between 1.5 and 4 h.
  • One operates very advantageously at 220 - 275 ° C for 1.5 to 3 hours.
  • the weight ratio of the diluent to the asphalt depends on the nature of the asphalt and the characteristics of the diluent; it is determined so as to obtain the viscosimetric characteristics set out above.
  • the method also relates to liquid asphalts obtained by rapid mixing of asphalts and of solvent, as indicated above. If necessary, the viscosity of these liquid asphalts is adjusted to obtain the values specified above.
  • FIG. 1 illustrates a particular embodiment of the invention applied to the treatment of solid asphalts.
  • the installation comprises an asphalt treatment chamber (1), the lower part (2) of which is inclined and leads to a collection tank (3).
  • a suitable device (4) allows the container (5) to penetrate inside the enclosure through the sealed door (6).
  • the solid asphalt container has walls allowing the passage of the solvent which is enriched with asphalts (7) during the advancement of the dissolution.
  • One or more spray bars such as the boom (8) are arranged in the upper part and / or on the sides of the enclosure (1). They are oriented towards the loading of solid asphalt.
  • the solvent is sprayed onto the solid asphalt, flows freely and provides the calories necessary for the fusion and dissolution of the asphalt.
  • the desired residence time is observed at the chosen temperature.
  • a Light fraction of small volume can be distilled through the line (19). It is condensed in the refrigerant (13) and sent to the flask (14).
  • the enclosure is in communication with the atmosphere by the vent line (15).
  • the liquid fraction of the balloon (14) is discharged by the line (16) and / or recycled all or part by the line (17) to adjust the flash point of the fuel obtained.
  • the liquid fuel is discharged through the line (18).
  • Another embodiment can consist in carrying out the treatments described above in similar equipment, but maintained under pressure.
  • the heat treatment of the invention can be carried out in any device allowing the heating of liquids in the desired temperature range, these devices being able to be or not equipped with stirring systems. . It is possible, as in the case where solid asphalts are treated, to collect and recycle all or part of the distilling fraction at the treatment temperature; pressurized devices can also be used.
  • Asphalt the analysis of which is given in Table III, is mixed at 250 ° C. with an oil cut of "L.C.O.” the characteristics of which are given in Table I.
  • the duration of the mixing is of the order of 30 seconds, after which the mixture is quickly brought back to a temperature of the order of 80 ° C. before storage. 45 parts by weight of asphalt are used for 55 parts by weight of "L.C.O.”.
  • the combustion of this mixture is carried out in an industrial type boiler (steam generator with water tubes), the capacity of which is 150 kg / h of fuel.
  • the combustion is carried out with excess air, without injecting water vapor.
  • This mixture is subjected to a heat treatment which consists in bringing it quickly to 250 ° C. and in maintaining it for 2 h at this temperature, by recycling all of the distilling fractions, then in rapidly cooling it.
  • the mixture obtained after this treatment has practically the same characteristics as the one from which we started (cf. Table II).
  • Example 1 the same asphalt is used as in Example 1.
  • the diluent "LCO” described in Table I, used in Comparative Example 1, is used to dilute this asphalt.
  • the apparatus described in FIG. 1 is used: bulk 606.7 kg of solid asphalt are placed in the container, and 726.7 kg of "LCO” are introduced via line (12); the temperature of the circulating liquid is raised in 1 hour to 250 ° C. When this temperature is reached, we keep it for 2 h; all the liquids distilling through the line (19) are recycled during the operation.
  • This fuel burned under conditions identical to those described in Example 1, has a weight index of 320 mg / kWh; this weight index is 3.6 times lower than that obtained in comparative example 1.

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)
  • Working-Up Tar And Pitch (AREA)
EP19850401714 1984-09-07 1985-09-04 Asphalt enthaltende flüssige Zusammensetzung und Verfahren zu ihrer Herstellung Expired EP0178199B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8413897A FR2570078B1 (fr) 1984-09-07 1984-09-07 Composition combustible liquide renfermant de l'asphalte et son procede de preparation
FR8413897 1984-09-07

Publications (2)

Publication Number Publication Date
EP0178199A1 true EP0178199A1 (de) 1986-04-16
EP0178199B1 EP0178199B1 (de) 1988-04-20

Family

ID=9307599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850401714 Expired EP0178199B1 (de) 1984-09-07 1985-09-04 Asphalt enthaltende flüssige Zusammensetzung und Verfahren zu ihrer Herstellung

Country Status (3)

Country Link
EP (1) EP0178199B1 (de)
DE (1) DE3562273D1 (de)
FR (1) FR2570078B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370143A1 (de) * 1988-10-05 1990-05-30 Exxon Chemical Patents Inc. Mischverfahren für flüssige Kohlenwasserstoffe
DE19607127C1 (de) * 1995-12-22 1997-02-13 Huelsta Werke Huels Kg Federleiste

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321666A (fr) * 1961-03-25 1963-03-22 Gelsenberg Benzin Ag Procédé de fabrication d'huiles lourdes, ou fuels, à faible teneur en soufre

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321666A (fr) * 1961-03-25 1963-03-22 Gelsenberg Benzin Ag Procédé de fabrication d'huiles lourdes, ou fuels, à faible teneur en soufre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0370143A1 (de) * 1988-10-05 1990-05-30 Exxon Chemical Patents Inc. Mischverfahren für flüssige Kohlenwasserstoffe
DE19607127C1 (de) * 1995-12-22 1997-02-13 Huelsta Werke Huels Kg Federleiste

Also Published As

Publication number Publication date
EP0178199B1 (de) 1988-04-20
FR2570078A1 (fr) 1986-03-14
DE3562273D1 (en) 1988-05-26
FR2570078B1 (fr) 1987-01-09

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