EP0166006A1 - Combustible pour moteurs - Google Patents

Combustible pour moteurs Download PDF

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Publication number
EP0166006A1
EP0166006A1 EP84106899A EP84106899A EP0166006A1 EP 0166006 A1 EP0166006 A1 EP 0166006A1 EP 84106899 A EP84106899 A EP 84106899A EP 84106899 A EP84106899 A EP 84106899A EP 0166006 A1 EP0166006 A1 EP 0166006A1
Authority
EP
European Patent Office
Prior art keywords
hydrocarbons
weight
fuel
methanol
fuels
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.)
Withdrawn
Application number
EP84106899A
Other languages
German (de)
English (en)
Inventor
Heinrich Dr. Müller
Karl-Heinz Keim
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.)
Union Rheinische Braunkohlen Kraftstoff AG
Original Assignee
Union Rheinische Braunkohlen Kraftstoff AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8191995&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0166006(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Union Rheinische Braunkohlen Kraftstoff AG filed Critical Union Rheinische Braunkohlen Kraftstoff AG
Priority to EP84106899A priority Critical patent/EP0166006A1/fr
Priority to EP19850104214 priority patent/EP0166096B1/fr
Priority to AT85104214T priority patent/ATE58911T1/de
Priority to DE8585104214T priority patent/DE3580791D1/de
Priority to IN902/DEL/85A priority patent/IN169742B/en
Publication of EP0166006A1 publication Critical patent/EP0166006A1/fr
Priority to IN550/DEL/88A priority patent/IN169750B/en
Withdrawn legal-status Critical Current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, 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
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only

Definitions

  • the invention relates to fuels based on lower alcohols which contain additions of mixtures of saturated C 5 / C 6 -, C 5 - C 7 hydrocarbons as well as gasoline and mixtures of saturated C 4 hydrocarbons.
  • hydrocarbons used can also be partially unsaturated or consist of unsaturated hydrocarbons (column 5, lines 28-34).
  • Table 1 the additional components specified are n-petane, isopentane and a C 4 cut which contains up to 20% butenes.
  • a mixture of saturated C 5 hydrocarbons can also be used for the spe case of fuel for aircraft engines.
  • US Pat. No. 2,365,009 also describes mixtures of ethanol with aliphatic C 3 -C S hydrocarbons, where the aliphatic hydrocarbons can be both saturated and unsaturated, and preferably isopentane (Claim 8 and Table 1) is admixed as the hydrocarbon.
  • the experts are aware of important fuel-specific disadvantages of the lower alcohols.
  • B. the poor cold start behavior, the poor driving behavior at low outside temperatures, unsatisfactory miscibility with hydrocarbons, especially at low temperatures, and the wide explosion range when mixed with hydrocarbons.
  • the cold start problems are to be found in the low ignitability of the alcohols methanol and ethanol.
  • a measure of the ignitability is the vapor pressure of a fuel, which is measured at 37.7 ° C according to the so-called Reid test.
  • gasoline in the Reid test has a vapor pressure of 700 mbar, while methanol has a pressure of 350 mbar.
  • methanol has a pressure of 350 mbar.
  • the explosion limits of pure methanol in air are 6.75 to 36.7 vol.%, So that there is an explosive fuel-air mixture in the vehicle tanks between + 15 ° C and +25 ° C.
  • Additions of 6-9% by weight isopentane reduce the upper explosion limits to -7 ° C in summer and -20 ° C in winter. so that the security problems are largely eliminated.
  • Isopentane is also characterized by excellent solubility in both methanol and ethanol, especially at low temperatures.
  • the best setting data for the vapor pressure of pure methanol turned out to be the upper vapor pressure values of the fuel standard DIN 51 600 with 700 mbar for summer and 900 mbar for winter fuel (Reid test).
  • isopentane (2-methylbutane) was therefore regarded as the optimal admixing component to date.
  • the vapor pressure is too high when using pure methanol, despite the reduction of the isopentane content to 5 to 6% by weight, with undesirable outgassing of the isopentane occurring as a result, while in winter operation despite an isopentane content of up to 9% by weight, a vapor pressure drop occurs at low temperatures, which means that the cold start properties leave something to be desired in winterly cold temperatures below -10 ° C.
  • the object of the present invention was therefore to find fuels based on methanol and ethanol which provide better cold start behavior, better driving behavior, in particular at relatively high and relatively low outside temperatures, as is required in practical motor vehicle operation, with perfect solubility even in winter operation and Ensure lower outgassing in summer operation and at the same time ensure safe operation without an explosive mixture occurring in the fuel tank.
  • the total amount of C 4 hydrocarbons on the one hand and C 5 / C 6 or C 5 -C 7 hydrocarbons or gasoline on the other hand can be 0.1 to 25% by weight.
  • the ratio of C 4 hydrocarbons on the one hand to C 5 / C 6 or CS-C7 hydrocarbons and gasoline on the other hand can be 1: 500 to 3: 1.
  • a ratio of C 4 hydrocarbons on the one hand and C S / C 6 or C 5 -C 7 hydrocarbons or gasoline on the other hand is preferably from 1: 1 to 1:20.
  • non-C 4 -C 7 hydrocarbons as are inevitable in technical fractions, can be contained in the fuel, regardless of whether they are non-aromatic saturated and / or unsaturated or aromatic hydrocarbons.
  • Usual normal and super fuels can be used as gasoline.
  • the methanol quality previously used for methanol-based fuels is methanol processed by distillation, so-called pure methanol (absolutely pure or refined methanol). It is known to the person skilled in the art that high demands are made with regard to the purity of this methanol quality, a correspondingly high level of operational effort being required, particularly in the distillation area.
  • raw methanol contains up to approx. 5% by weight of water numerous impurities, e.g. Formaldehyde, methyl formate, formic acid, dimethyl sulfide, formaldehyde dimethyl acetal, iron pentacarbonyl and other carboxylic acids and their esters.
  • impurities e.g. Formaldehyde, methyl formate, formic acid, dimethyl sulfide, formaldehyde dimethyl acetal, iron pentacarbonyl and other carboxylic acids and their esters.
  • a crude methanol can also be used which is not distilled, but is topped off with removal of non-volatile impurities.
  • the vapor pressure of the fuel is pure or raw methanol and C 4 - / C 5 - / C 6 hydrocarbons in mbar against the temperature range -30 to +30 ° C for winter and summer.
  • compositions are given in Table 2, each in% by weight:
  • Dic Reid vapor pressures are 7CC mbar for summer fuels and 900 mbar for winter fuels.
  • FIG. 7 A single curve is shown in FIG. 8 for a mixture of 95.6% by weight of ethanol and C S / C 6 hydrocarbon additives. If you keep the total amount of z. B. C S / C 6 hydrocarbons constant, but varies the ratio of C 5 - to C 6 hydrocarbons, so you get similar sets of curves.
  • the vapor pressure of the fuel is pure or raw methanol with the addition of C 4 - / C - C 7 hydrocarbons in mbar against the temperature range -30 ° C to +30 ° C for winter and summer.
  • compositions are given in Table 3, in each case in% by weight:
  • Reid vapor pressures are 700 mbar for summer fuels and 900 mbar for winter fuels.
  • compositions are given in Table 4, each in% by weight:
  • Reid vapor pressures are 700 mbar for summer fuels and 900 mbar for winter fuels.
  • vapor pressures of the fuels according to the invention shown in the curves in FIGS. 1-3 are summarized in Table 5 for -30 ° C. and +30 ° C. They show that, for the person skilled in the art, the fuels according to the invention unpredictably ensure excellent vapor pressure behavior.
  • Table 8 summarizes the compositions of the ethanol-based fuels according to the invention.
  • FIG. 8 shows, by way of example for the addition of C S / C 6 to ethanol on the basis of the general curve in FIG. 7, from which concentration ranges the preferred or particularly preferred sections a and b are taken.
  • the ratio of C 5: C 6 in this example is 1: 1.
  • Ha t is the concentration of C 5 / C 6, or C 5 - C 7 or OK 7 and 8, determined according to the concentration curve, it is much C 4 added that the Reiddampftul is obtained.
  • Suitable corrosion inhibitors include e.g. those based on triazole, imidazole or benzoate.
  • Tricresyl phosphate e.g. Tricresyl phosphate, but also others, can be used.
  • emulsifiers such as glycols or their mono- and diether and others can be used.
EP84106899A 1984-06-16 1984-06-16 Combustible pour moteurs Withdrawn EP0166006A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP84106899A EP0166006A1 (fr) 1984-06-16 1984-06-16 Combustible pour moteurs
EP19850104214 EP0166096B1 (fr) 1984-06-16 1985-04-06 Combustibles pour moteurs
AT85104214T ATE58911T1 (de) 1984-06-16 1985-04-06 Motor-kraftstoffe.
DE8585104214T DE3580791D1 (de) 1984-06-16 1985-04-06 Motor-kraftstoffe.
IN902/DEL/85A IN169742B (fr) 1984-06-16 1985-10-29
IN550/DEL/88A IN169750B (fr) 1984-06-16 1988-06-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84106899A EP0166006A1 (fr) 1984-06-16 1984-06-16 Combustible pour moteurs

Publications (1)

Publication Number Publication Date
EP0166006A1 true EP0166006A1 (fr) 1986-01-02

Family

ID=8191995

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84106899A Withdrawn EP0166006A1 (fr) 1984-06-16 1984-06-16 Combustible pour moteurs
EP19850104214 Expired - Lifetime EP0166096B1 (fr) 1984-06-16 1985-04-06 Combustibles pour moteurs

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19850104214 Expired - Lifetime EP0166096B1 (fr) 1984-06-16 1985-04-06 Combustibles pour moteurs

Country Status (2)

Country Link
EP (2) EP0166006A1 (fr)
DE (1) DE3580791D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2333048A (en) * 1998-01-13 1999-07-14 Hugh F Collins A composition for regenerating a catalytic converter
US6843813B1 (en) 2000-06-07 2005-01-18 Hugh Frederick Collins Rejuvenation and/or cleaning of catalysts
GB2433265A (en) * 2005-12-16 2007-06-20 Derek Lowe Low toxicity fuel
CN113088348A (zh) * 2021-04-09 2021-07-09 重庆邑丰新能源有限公司 一种工业用改性甲醇燃料及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711985A1 (de) * 1987-04-09 1988-10-20 Union Rheinische Braunkohlen Verwendung von polyolethern zur verhinderung oder verminderung von ablagerungen in gemischaufbereitungssystemen
US6324827B1 (en) * 1997-07-01 2001-12-04 Bp Corporation North America Inc. Method of generating power in a dry low NOx combustion system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2251614A1 (fr) * 1973-11-20 1975-06-13 Linde Ag
DE2806673A1 (de) * 1977-07-07 1979-01-25 Suzuki Motor Co Treibstoff fuer ottomotoren
US4333739A (en) * 1979-10-23 1982-06-08 Neves Alan M Blended ethanol fuel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2251614A1 (fr) * 1973-11-20 1975-06-13 Linde Ag
DE2806673A1 (de) * 1977-07-07 1979-01-25 Suzuki Motor Co Treibstoff fuer ottomotoren
US4333739A (en) * 1979-10-23 1982-06-08 Neves Alan M Blended ethanol fuel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2333048A (en) * 1998-01-13 1999-07-14 Hugh F Collins A composition for regenerating a catalytic converter
GB2333048B (en) * 1998-01-13 2002-03-20 Hugh F Collins A rejuvenating and/or cleaning agent
US6843813B1 (en) 2000-06-07 2005-01-18 Hugh Frederick Collins Rejuvenation and/or cleaning of catalysts
GB2433265A (en) * 2005-12-16 2007-06-20 Derek Lowe Low toxicity fuel
CN113088348A (zh) * 2021-04-09 2021-07-09 重庆邑丰新能源有限公司 一种工业用改性甲醇燃料及其制备方法

Also Published As

Publication number Publication date
EP0166096B1 (fr) 1990-12-05
EP0166096A1 (fr) 1986-01-02
DE3580791D1 (de) 1991-01-17

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840710

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

ITCL It: translation for ep claims filed

Representative=s name: SOCIETA' ITALIANA BREVETTI S.P.A.

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Effective date: 19860725

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Withdrawal date: 19861201

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KEIM, KARL-HEINZ

Inventor name: MUELLER, HEINRICH, DR.