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WO1983000500A1 - Dispersion charbon-eau - Google Patents

Dispersion charbon-eau Download PDF

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Publication number
WO1983000500A1
WO1983000500A1 PCT/SE1982/000107 SE8200107W WO8300500A1 WO 1983000500 A1 WO1983000500 A1 WO 1983000500A1 SE 8200107 W SE8200107 W SE 8200107W WO 8300500 A1 WO8300500 A1 WO 8300500A1
Authority
WO
WIPO (PCT)
Prior art keywords
dispersion
coal
polymers
water
weight
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/SE1982/000107
Other languages
English (en)
Inventor
International Ab Fluidcarbon
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.)
Fluidcarbon International AB
Original Assignee
Fluidcarbon International AB
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 Fluidcarbon International AB filed Critical Fluidcarbon International AB
Priority to AT82901174T priority Critical patent/ATE25398T1/de
Priority to DE8282901174T priority patent/DE3275385D1/de
Priority to BR8207824A priority patent/BR8207824A/pt
Priority to PCT/EP1982/000244 priority patent/WO1983003617A1/fr
Priority to EP82903239A priority patent/EP0118440B1/fr
Priority to AT82903239T priority patent/ATE32747T1/de
Priority to DE8282903239T priority patent/DE3278166D1/de
Priority to IT8224584A priority patent/IT1207967B/it
Priority to CA000418903A priority patent/CA1216425A/fr
Priority to ES519418A priority patent/ES8402341A1/es
Priority to AU12231/83A priority patent/AU1223183A/en
Priority to JP58500710A priority patent/JPS59500520A/ja
Priority to EP83900669A priority patent/EP0105878A1/fr
Priority to FI834462A priority patent/FI834462L/fi
Priority to BR8306789A priority patent/BR8306789A/pt
Priority to PCT/SE1983/000039 priority patent/WO1983003618A1/fr
Publication of WO1983000500A1 publication Critical patent/WO1983000500A1/fr
Priority to NO83831118A priority patent/NO160587C/no
Priority to FI831100A priority patent/FI75861C/fi
Priority to DK146683A priority patent/DK152374C/da
Priority to NO834432A priority patent/NO834432L/no
Priority to DK5584/83A priority patent/DK558483D0/da
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
    • C10L1/326—Coal-water suspensions

Definitions

  • the present invention relates to a coal-water dispersion which is ve ry stable in storage and is suitable for transport and energy production. More particularly the invention relates to a dispersion comprising water, pulverized coal and additives, the coal content ranging from 60 to 80 % by weight.
  • a dispersion of coal is considerably less polluting- and can be more easily handled than solid coal and also eliminates some risks involved in transport and storage. Such a dispersion is also preferred from an economical point of view.
  • Physical conversion is another method of transforming the coal into liquid form, and the invention relates to this method. It is practised by dispersing the coal in a liquid which may consist of some organic fuel such as heating oil, methanol, etc, or of water.
  • a liquid which may consist of some organic fuel such as heating oil, methanol, etc, or of water.
  • the problem of water dispersions of pulverized coal mainly is to make the dispersion stable at low viscosity.
  • the coal particles must not sediment during storage or transport of the coal dispersion.
  • the coal dispersion shall have a high pumpability and shall have rheological properties so as to be suitable for burning by conventional technique probably modified to a minor degree.
  • the dispersion has rheological properties which allow the dispersion to be pumped and transported through pipelines at a greatly reduced friction, and above all has a considerably improved stability against flocculation as well as sedimentation,
  • the force is of a general character and does not vary with the length of the alkyl chain or with the physical condition of the chains (l i q ui d or solid) and is present also when a quantity charged surface-active substance is included into the system. Hydration forces have been proved also by directly measuring the forces between surfaces mutually spaced some Angstrom. A theoretical model for hydration forces has recently been developed, and then it has been possible to relate these forces to the presence of so-called mirror charges over interfaces where the effective dielectric constant is being changed Such mirror charges with zw i tte ri on i c groups should be common in micro- and macro-heterogeneous systems. They are utilized according to this invention in order to impart desired properties to a suspension of a low dielectric substance. Then, a zwitterionic surface -active substance such as lecithin can be adsorbed onto the surfaces of the solid particles. Strong repulsion forces between the particles then exist at short distances. The principle therefore will be particularly useful for concentrated dispersions.
  • a non-mieelle-forming zwitterionic surfactant such as lecithin or alkylbetain which is thus relatively difficult to dissolve in water, is first dissolved in an organic solvent.
  • the solvent can consist of for example octanol, hexadecane or methanol and can be recovered in a suitable manner or can comprise an insignificant portion by weight of the dispersion.
  • the surfactant preparation is added to a dispersion of pulverized coal and water. Suitable fractions of the coal powder range from 1 to 200 ⁇ m (preferably
  • the particle size and the size distribution can be chosen according to the desired stability. The smaller particle size, the greater stability but it is expensive to grind coal down to submicron particle sizes.
  • the particle concentration can be varied within a broad range. Considering economical and technical aspects the particle concentration should be optimized from one case to the other. Coal-water dispersions with a dry substance content between 65 and 75 % by weight are of particular interest because these dispersions have good rheological properties for example for transport in pipelines. In order to obtain the highest coal contents (70 - 80 % by weight) the size distribution must be particularly taken into account. In the normal case this can be done on the basis of simple geometrical considerations as to the minimization of the free volume when packing particles of different sizes.
  • hydrophilic anionic and non-ionic polymers are added to the dispersion in order to provide some form of a steric barrier and in order to reduce the friction between the particles.
  • polyethers, polysaccharides, polyalcohols and polyacrylates Particularly suitable according to the invention are polyethyleneoxi de, copolymers of the polyethyl eneoxide-polypropyleneoxide type, carboxymethyl cell ulose, and xanthan gum.
  • concentration of polymers in percent by weight based on the total weight can be varied between 0.1 and 5 % but is economically optimal at about 0.5 %.
  • the salt is calcium hydroxide or dolomite powder.
  • the salt neutralizes acid gas components generated at the oxidation of the fuel and can be recovered in a particle percipi tator.
  • an agent can be added to the dispersion which forms a monomol ecu! ar layer in the interface.
  • an agent is cetyl alcohol or hexadecanol .
  • the invention provides substantial advantages over the prior art technique of stabilizing coal particles in a water solution. Due to an excellent sedimentation stability combined with favourable rheological properties for pumping, the dispersion obtained is well suited for transporting coal in an appropriate manner in conduits or pipelines for use for example in the chemical industry or for direct energy production. Combustion tests in boilers designed for heavy oil have shown that the dispersion is very suitable to replace oil completely or partly.

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)
  • Colloid Chemistry (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Lubricants (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Une dispersion comprenant de l'eau, du charbon pulvérisé et des additifs, stable au stockage, peut être pompée et brûlée par une technique conventionnelle. La teneur en charbon de la dispersion se situe entre 60 et 80 % en poids et la dispersion contient au moins une substance amphiphile adsorbée sur les surfaces des particules de charbon, qui provoque une répulsion entre les particules de charbon par des forces d'hydratation, ainsi que des polymères agissant de concert avec cette substance, au moins l'un de ces polymères contenant des segments de caractère aussi bien hydrophobe qu'hydrophile.
PCT/SE1982/000107 1981-08-03 1982-04-05 Dispersion charbon-eau Ceased WO1983000500A1 (fr)

Priority Applications (21)

Application Number Priority Date Filing Date Title
AT82901174T ATE25398T1 (de) 1981-08-03 1982-04-05 Kohle-wasser dispersion.
DE8282901174T DE3275385D1 (en) 1981-08-03 1982-04-05 Coal-water dispersion
BR8207824A BR8207824A (pt) 1981-08-03 1982-04-05 Dispersao carvao-agua
PCT/EP1982/000244 WO1983003617A1 (fr) 1982-04-05 1982-11-12 Dispersion charbon-eau et son procede d'obtention
EP82903239A EP0118440B1 (fr) 1982-04-05 1982-11-12 Dispersion charbon-eau et son procede d'obtention
AT82903239T ATE32747T1 (de) 1982-04-05 1982-11-12 Kohle-wasser-dispersion und verfahren zu deren herstellung.
DE8282903239T DE3278166D1 (en) 1982-04-05 1982-11-12 Coal-water dispersion and method of the manufacture thereof
IT8224584A IT1207967B (it) 1982-04-05 1982-12-03 Dispersione di acqua e carbone emetodo per la sua produzione.
CA000418903A CA1216425A (fr) 1982-04-05 1983-01-05 Bouillie d'eau et de houille, et sa preparation
ES519418A ES8402341A1 (es) 1982-04-05 1983-01-31 Procedimiento de obtencion de una dispersion mejorada de carbon-agua.
PCT/SE1983/000039 WO1983003618A1 (fr) 1982-04-05 1983-02-04 Dispersion charbon-eau et son procede de production
AU12231/83A AU1223183A (en) 1982-04-05 1983-02-04 Coal-water dispersion and method of the manufacture thereof
JP58500710A JPS59500520A (ja) 1982-04-05 1983-02-04 石炭−水分散液およびその製造方法
EP83900669A EP0105878A1 (fr) 1982-04-05 1983-02-04 Dispersion charbon-eau et son procede de production
FI834462A FI834462L (fi) 1982-04-05 1983-02-04 Kol-vatten-dispersion och metod foer framstaellning daerav.
BR8306789A BR8306789A (pt) 1982-04-05 1983-02-04 Dispersao de agua,carvao pulverizado e aditivo,e processo para fabricar a mesma
NO83831118A NO160587C (no) 1981-08-03 1983-03-28 Dispersjon bestaaende av vann, pulverisert kull og tilsetningsmidler.
FI831100A FI75861C (fi) 1981-08-03 1983-03-30 Kol/vattendispersion.
DK146683A DK152374C (da) 1981-08-03 1983-03-30 Dispersion af kul i vand
NO834432A NO834432L (no) 1982-04-05 1983-12-02 Kull-vann-dispersjon og fremgangsmaate for fremstilling derav
DK5584/83A DK558483D0 (da) 1982-04-05 1983-12-05 Kul-vand-dispersion og fremgangsmaade til fremstilling deraf

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8104645-0810803 1981-08-03
SE8104645A SE436136B (sv) 1981-08-03 1981-08-03 Kol-vattendispersion med additiv bestaende av zwitterjonisk tensid och dermed samverkande hydrofila polymerer

Publications (1)

Publication Number Publication Date
WO1983000500A1 true WO1983000500A1 (fr) 1983-02-17

Family

ID=20344323

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1982/000107 Ceased WO1983000500A1 (fr) 1981-08-03 1982-04-05 Dispersion charbon-eau

Country Status (11)

Country Link
EP (1) EP0084535B1 (fr)
AT (1) ATE25398T1 (fr)
AU (1) AU557810B2 (fr)
BR (1) BR8207824A (fr)
DE (1) DE3275385D1 (fr)
DK (1) DK152374C (fr)
FI (1) FI75861C (fr)
NO (1) NO160587C (fr)
SE (1) SE436136B (fr)
SU (1) SU1303032A3 (fr)
WO (1) WO1983000500A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004045A1 (fr) * 1982-05-07 1983-11-24 Ab Carbogel Boue aqueuse d'un combustible solide et procede et moyens permettant sa production
WO1983004047A1 (fr) * 1982-05-07 1983-11-24 Ab Carbogel Boue aqueuse pompable d'un combustible solide et son procede de production
EP0113146A1 (fr) * 1982-12-27 1984-07-11 THE PROCTER & GAMBLE COMPANY Compositions de dispersions aqueuses charbon-eau
EP0122895A3 (en) * 1983-03-18 1986-05-07 Bergvik Kemi Ab Dispersing agent
US4592760A (en) * 1985-01-22 1986-06-03 Merck & Co., Inc. Coal slurry
US4713086A (en) * 1984-03-02 1987-12-15 Amax Inc. Oil-compatible coal/water mixtures
EP0118440B1 (fr) * 1982-04-05 1988-03-02 Fluidcarbon International Ab Dispersion charbon-eau et son procede d'obtention

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417327B (sv) * 1977-05-31 1981-03-09 Scaniainventor Ab Brennbart medium bestaende av pulveriserat kol, vatten och som dispergeringsmedel polyakrylat eller polyfosfat samt forfarande for framstellning herav
JPS5643394A (en) * 1979-09-14 1981-04-22 Lion Corp Dispersant for mixed fuel
JPS5657888A (en) * 1979-10-17 1981-05-20 Lion Corp Dispersing agent for mixed fuel
JPS5657887A (en) * 1979-10-17 1981-05-20 Lion Corp Dispersing agent for mixed fuel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE417327B (sv) * 1977-05-31 1981-03-09 Scaniainventor Ab Brennbart medium bestaende av pulveriserat kol, vatten och som dispergeringsmedel polyakrylat eller polyfosfat samt forfarande for framstellning herav
JPS5643394A (en) * 1979-09-14 1981-04-22 Lion Corp Dispersant for mixed fuel
JPS5657888A (en) * 1979-10-17 1981-05-20 Lion Corp Dispersing agent for mixed fuel
JPS5657887A (en) * 1979-10-17 1981-05-20 Lion Corp Dispersing agent for mixed fuel

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, Vol 5, No 102, C61, abstract of JP 56-43394, publ. 1981-04-22 *
Patent Abstracts of Japan, Vol 5, No 120, 065, abstract of JP 56-57887, publ. 1981-05-20 *
Patent Abstracts of Japan, Vol 5, No 120, 065, abstract of JP 56-57888, publ. 1981-05-20 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118440B1 (fr) * 1982-04-05 1988-03-02 Fluidcarbon International Ab Dispersion charbon-eau et son procede d'obtention
WO1983004045A1 (fr) * 1982-05-07 1983-11-24 Ab Carbogel Boue aqueuse d'un combustible solide et procede et moyens permettant sa production
WO1983004044A1 (fr) * 1982-05-07 1983-11-24 Ab Carbogel Boue aqueuse d'un combustible solide et son procede de production
WO1983004047A1 (fr) * 1982-05-07 1983-11-24 Ab Carbogel Boue aqueuse pompable d'un combustible solide et son procede de production
US4496367A (en) * 1982-05-07 1985-01-29 Ab Carbogel Pumpable aqueous slurry of a solid fuel and a process for the production thereof
US4565549A (en) * 1982-05-07 1986-01-21 Ab Carbogel Aqueous slurry of a solid fuel and a process for the production thereof
US4887383A (en) * 1982-05-07 1989-12-19 Ab Carbogel Process for producing a slurry of a pulverized carbonaceous material
EP0113146A1 (fr) * 1982-12-27 1984-07-11 THE PROCTER & GAMBLE COMPANY Compositions de dispersions aqueuses charbon-eau
EP0122895A3 (en) * 1983-03-18 1986-05-07 Bergvik Kemi Ab Dispersing agent
AU569284B2 (en) * 1983-03-18 1988-01-28 Bergvik Kemi A.B. Dispersing agent
US4713086A (en) * 1984-03-02 1987-12-15 Amax Inc. Oil-compatible coal/water mixtures
US4592760A (en) * 1985-01-22 1986-06-03 Merck & Co., Inc. Coal slurry

Also Published As

Publication number Publication date
AU8333582A (en) 1983-02-22
SE8104645L (sv) 1983-02-04
DK146683D0 (da) 1983-03-30
EP0084535A1 (fr) 1983-08-03
FI831100L (fi) 1983-03-30
DE3275385D1 (en) 1987-03-12
EP0084535B1 (fr) 1987-02-04
DK152374B (da) 1988-02-22
AU557810B2 (en) 1987-01-08
FI75861C (fi) 1988-08-08
SU1303032A3 (ru) 1987-04-07
NO831118L (no) 1983-03-28
SE436136B (sv) 1984-11-12
FI75861B (fi) 1988-04-29
BR8207824A (pt) 1983-09-06
ATE25398T1 (de) 1987-02-15
DK152374C (da) 1988-08-01
DK146683A (da) 1983-03-30
NO160587B (no) 1989-01-23
FI831100A0 (fi) 1983-03-30
NO160587C (no) 1989-05-03

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