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(12) Demande de brevet: (11) CA 2817309
(54) Titre français: PROCEDES ET COMPOSITIONS DE SECHAGE DU CHARBON
(54) Titre anglais: METHODS AND COMPOSITIONS FOR DRYING COAL
(51) Classification internationale des brevets (CIB):
  • C10L 5/00 (2006.01)
(72) Inventeurs (Pays):
  • HARSH, PHILIP (Etats-Unis d'Amérique)
  • HURLEY, MICHAEL (Etats-Unis d'Amérique)
  • JONES, ANDREW K. (Etats-Unis d'Amérique)
  • SIKKA, VINOD K. (Etats-Unis d'Amérique)
  • RICIGLIANO, JOSEPH W. (Etats-Unis d'Amérique)
(73) Titulaires (Pays):
  • ROSS TECHNOLOGY CORPORATION (Etats-Unis d'Amérique)
(71) Demandeurs (Pays):
  • ROSS TECHNOLOGY CORPORATION (Etats-Unis d'Amérique)
(74) Agent: BERESKIN & PARR LLP/S.E.N.C.R.L.,S.R.L.
(45) Délivré:
(86) Date de dépôt PCT: 2010-11-09
(87) Date de publication PCT: 2012-05-18
Requête d’examen: 2015-11-03
(30) Licence disponible: S.O.
(30) Langue des documents déposés: Anglais

Abrégé français

La présente invention concerne des procédés, des compositions et des systèmes de séchage de fines de charbon.


Abrégé anglais

The present disclosure provides methods, compositions and systems for drying coal fines.


Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.


1. A method of reducing the water associated with wet coal fines comprising
contacting
said wet coal fines with at least one water-collecting material in the form of
particles, wherein
at least a portion of the water present in the mixture becomes associated with
the water-
collecting material; said method further comprising separation of at least a
portion of said
water-collecting material is from said coal fines.
2. A method according to claim 1, wherein said water-collecting material
collects water
by absorption and/or absorption.
3. A method according to claim 1 wherein said water chemically reacts with
the water-
collecting material.
4. A method according to any of claims 1, wherein prior to the step of
contacting said
wet coal fines with said water-collecting material, the coal fines are in a
mixture comprising
water that is subjected to an earlier treatment for removing water.
5. A method according to claim 4, wherein said earlier treatment is carried
out by one or
more treatments selected from the group consisting of treatment with air or
other gas,
filtration, settling, and centrifugation.
6. A method according to claim 5, wherein said earlier treatment is carried
out by a
filtration treatment that is selected from the group consisting of gravity-
based filtration,
filtration assisted by centrifugal force, pressure-assisted filtration and
vacuum-assisted
filtration.
7. A method according to claim 1, wherein said particles have an average
size that is at
least: 2, 3, 4, 6, 7, 8; 9, 10, 12 14 16, 18, 20, 25, or 30 times greater than
the average size of
said coal fines.
8. The method according to claim 1, wherein said particles of water-
collecting materials are
spherical or substantially spherical, may have an average diameter that is at
least 4 mm where the
average diameter is less than about 5 mm, 7.5mm, 10mm or 15 mm.

21


9. A method according to any of claims 7-8, wherein said particles have an
average
diameter that is at least 1, at least 1.25, at least 1.5, at least 1.75, at
least 2.0, at least 2.25 and
at least 2.5 mm, and less than about 5 mm or 10 mm.
10. A method according to claim 1, wherein said particles have an average
diameter that
is greater than about 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 or 26 mm.
11. A method according to claim 10, wherein said average diameter is less
than about 28,
30 or 32 mm.
12. A method according to any of claims 1-11; wherein said water-collecting
material
comprises a material selected from the group consisting of a molecular sieve,
a hydratable
polymer and a desiccant.
13 A method according to any of claims 1-11, wherein said water-collecting
material
comprises a hydratable polymeric material selected the group consisting of a
polyacrylate and
a carboxymethyl cellulose.
14. A method according to any of claims 1-11, wherein said water-collecting
material
comprises a desiccant selected from the group consisting of silica, alumina,
and calcium
sulfate.
15. A method according to any of claims 1-11, wherein said water-collecting
material
comprises alumina.
16. A method according to claim 15, wherein said separation comprises size-
based
separation.
17. A method according to claim 16, wherein said size-based separation
comprises one or
more procedures selected from the group consisting of, filtering, sieving or
sifting, and the
use of a stream of gas to carry coal fines away from larger and/or heavier
water-collecting
materials.

22


18. A method according to any of claims 1, wherein following said
separation, the
method further comprises removing at least a portion of the water formerly
associated with
said coal fines from the water-collecting material.
19. A method according to claim 18, wherein following said removal of at
least a portion
of the water from the water-collecting material, said water-collecting
material is re-used to
collect water from wet coal fines.
20. The method of claim 1, wherein said wet coal fines comprise an amount
of water by
weight selected from the group consisting of from about 10% to about 15%, from
about 15%
to about 20%, from about 20% to about 25%, from about 25 to about 30%, from
about 30%
to about 35%, and greater than 35%.
21. The method of claim 1-11, wherein, following the collection of water by
the water-
collecting material, the amount of water associated with the coal fines by
weight is selected
from the group consisting of less than about 10%, less than about 8%, less
than about 6%,
less than about 5% and less than about 4%.
22 A composition comprising wet coal fines, and at least one water-
collecting material,
in the form of particles that can be separated from the coal fines, wherein at
least 25% of the
water (by weight) in the composition is associated with the water-collecting
material.
23. A composition according to claim 22, wherein the amount of water by
weight that is
associated with the water-collecting material is selected from the group
consisting of at least
30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at
least 60%, at least
65%, at least 70%, at least 75%, at least 80%, at least 85%, and at least 90%.
24. A composition according to claim 22, wherein said water-collecting
material
comprises a material that absorbs water.
25. A composition according to claim 22, wherein said water-collecting
material
comprises a material that adsorbs water.

23


26. A composition according to claim 22, wherein said water-collecting
material
comprises a material that chemically reacts with the water-collecting
material.
27. The composition according to claim 22, wherein said particles of water-
collecting
materials are spherical or substantially spherical, may have an average
diameter that is at least 4 mm
where the average diameter is less than about 5 mm, 7.5mm, 10mm or 15 mm.
28. A composition according to claim 22, wherein said water-collecting
material is in the
form of particles with an average size that is at least: 2; 3; 4; 6; 7; 8; 9,
10, 12 14 16, 18, 20,
25, or 30 times greater than the average size of the coal fines.
29. A composition according to claim 28, wherein said particles have an
average diameter
that is at least 1, at least 1.25, at least 1.5, at least 1.75, at least 2.0,
at least 2.25 and at least
2.5 mm, and less than about 5 mm or 10 mm.
30. A composition according to claim 28, wherein particles have an average
diameter that
is greater than about 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 or 26 mm.
31. A composition according to claim 29, wherein said average diameter is
less than
about 28, 30 or 32 mm.
32. A composition according to any of claims 22-31, wherein said water-
collecting
material comprises a material selected from the group consisting of a
molecular sieve, a
hydratable polymer and a desiccant.
33. A composition according to any of claims 22-31, wherein said water-
collecting
material comprises a hydratable polymeric material selected the group
consisting of a
polyacrylate and a carboxymethyl cellulose.
34. A composition according to any of claims 22-31, wherein said water-
collecting
material comprises a desiccant selected from the.group consisting of silica,
alumina and
calcium sulfate.

24


35. A combination comprising
a composition according to any of claims 22 - 31, and
an apparatus for separating at least a portion of said water-collecting
material from
said composition.
36. A combination according to claim 35, wherein said apparatus is an
apparatus that is
configured to separate said water-collecting materials from said coal fines by
a size-based
separation process.
37. An combination according to claim 36, wherein said apparatus is
configured to
provide a least one treatment selected from the group consisting of filtering,
sieving or
sifting, and the use of a stream of gas to carry coal fines away from larger
and heavier water-
collecting materials.
38. A system for removing water from wet coal fines comprising
a first location in which the wet coal fines are admixed with at least one
water-
collecting material to form an admixture of wet coal fines and said water-
collecting material,
and
a second location where at least a portion of said water-collecting material
is removed
from said admixture;
wherein said water collecting material is in the form of particles that can be
separated from
the coal fines.
39. A system according to claim 38, wherein following the step of forming
said
admixture, at least 25% of the water (by weight) in the composition is
associated with the
water-collecting material.
40. A system according to claim 39, wherein the amount of water by weight
that is
associated with the water-collecting material is selected from the group
consisting of at least
30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at
least 60%, at least
65%, at least 70%, at least 75%, at least 80%, at least 85%, and at least 90%.
41. A system according to claim 38, wherein said water-collecting material
comprises a
material that absorbs water.



42. A system according to claim 38, wherein said water-collecting material
comprises a
material that adsorbs water.
43. A system according to claim 38, wherein said water-collecting material
comprises a
material that bonds with the water.
44. The system according to claim 38, wherein said particles of water-
collecting materials are
spherical or substantially spherical, may have an average diameter that is at
least 4 mm where the
average diameter is less than about 5 mm, 7.5mm, 10mm or 15 mm.
45. The system according to claim 38, wherein water-collecting material is
in the form of
particles that have an average size that is at least: 2, 3, 4, 6, 7, 8; 9, 10,
12 14 16, 18, 20, 25,
or 30 times greater than the average size of the coal fines.
46. A system according to claim 38 44, wherein the average size of said
particles have an
average diameter that is at least: 1, at least 1.25, at least 1.5, at least
1.75, at least 2.0, at least
2.25 and at least 2.5 mm, and less than about 5 mm or 10 mm.
47. A system according to claim 44, wherein said particles have an average
diameter
that is greater than about 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 or 26
mm.
48. A system according to claim 47, wherein the average diameter is less
than about 28,
30 or 32 mm.
49. A system according to any of claims 38-48, wherein said water-
collecting material
comprises a material selected from the group consisting of a molecular sieve,
a hydratable
polymer and a desiccant.
50. A system according to any of claims 38- 48, wherein said water-
collecting material
comprises a hydratable polymeric material selected the group consisting of a
polyacrylate and
a carboxymethyl cellulose.

26


51. A system according to any of claims 38-48, wherein said water-
collecting material
comprises a desiccant selected from the group consisting of silica, alumina,
and calcium
sulfate.
52. A system according to any of claims 38-48, wherein said second location
is
configured to provide size-based separation.
53. A system according to claim 52, wherein said second location is
configured to provide
a treatment selected from the group consisting of filtering, sieving or
sifting, and the use of a
stream of gas to carry coal fines away from larger and/or heavier water-
collecting materials.
54. A system according to any of claims 38-48, further comprising a third
location where
at least a portion of the water is removed from the water-collecting material.
55. A system according to claim 54, further comprising a transporter for
transporting at
least a portion of the water-collecting material obtained from the third
location back to the
first location for admixture with wet coal fines.
56. A method according to claim 1, wherein said water-collecting material
is in the form
of particles that are susceptible to attraction by a magnet.
57. The method of claim 56, wherein following said contacting, the method
further
comprises a separation in which at least a portion of said water-collecting
material is
separated from said coal fines by magnetic separation alone or in combination
with size based
separation applied to said particles either before or after said magnetic
separation.
58. A composition according to claim 22, wherein said particles is at least
one water-
collecting material that is susceptible to attraction by a magnet.
61. A system for removing water from wet coal fines according to claim 38,
wherein:
said first location is a location in which the wet coal fines are admixed with
at least
one water-collecting material that is susceptible to attraction by a magnet to
form an
admixture of wet coal fines and said water-collecting material, and

27


said second location is a location where at least a portion of said water-
collecting
material is removed from said admixture using magnetic separation alone or in
combination
with size based separation applied to said particles either before or after
said magnetic
separation.
62. The system of claim 61, further comprising particles that are susceptible
to magnetic
separation.

28


Désolé, le dessin représentatatif concernant le document de brevet no 2817309 est introuvable.

Pour une meilleure compréhension de l’état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , États administratifs , Taxes périodiques et Historique des paiements devraient être consultées.

États admin

Titre Date
(86) Date de dépôt PCT 2010-11-09
(87) Date de publication PCT 2012-05-18
(85) Entrée nationale 2013-05-08
Requête d'examen 2015-11-03

Taxes périodiques

Description Date Montant
Dernier paiement 2017-10-05 200,00 $
Prochain paiement si taxe applicable aux petites entités 2018-11-09 100,00 $
Prochain paiement si taxe générale 2018-11-09 200,00 $

Avis : Si le paiement en totalité n’a pas été reçu au plus tard à la date indiquée, une taxe supplémentaire peut être imposée, soit une des taxes suivantes :

  • taxe de rétablissement prévue à l’article 7 de l’annexe II des Règles sur les brevets ;
  • taxe pour paiement en souffrance prévue à l’article 22.1 de l’annexe II des Règles sur les brevets ; ou
  • surtaxe pour paiement en souffrance prévue aux articles 31 et 32 de l’annexe II des Règles sur les brevets.

Historique des paiements

Type de taxes Anniversaire Échéance Montant payé Date payée
Dépôt 400,00 $ 2013-05-08
Taxe périodique - Demande - nouvelle loi 2 2012-11-09 100,00 $ 2013-05-08
Taxe périodique - Demande - nouvelle loi 3 2013-11-12 100,00 $ 2013-11-07
Taxe périodique - Demande - nouvelle loi 4 2014-11-10 100,00 $ 2014-11-07
Taxe périodique - Demande - nouvelle loi 5 2015-11-09 200,00 $ 2015-10-22
Requête d'examen 800,00 $ 2015-11-03
Taxe périodique - Demande - nouvelle loi 6 2016-11-09 200,00 $ 2016-10-05
Taxe périodique - Demande - nouvelle loi 7 2017-11-09 200,00 $ 2017-10-05

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Description du
Document
Date
(yyyy-mm-dd)
Nombre de pages Taille de l’image (Ko)
Abrégé 2013-05-08 1 57
Revendications 2013-05-08 8 280
Dessins 2013-05-08 1 19
Description 2013-05-08 11 819
Page couverture 2013-07-15 1 35
Revendications 2013-05-09 5 188
PCT 2013-05-08 19 850
Poursuite-Amendment 2013-05-08 6 226
Taxes 2014-11-07 1 33
Poursuite-Amendment 2015-11-03 1 45
Poursuite-Amendment 2016-10-27 3 208
Poursuite-Amendment 2017-04-25 6 189
Revendications 2017-04-25 3 74