US20110277673A1 - Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas - Google Patents

Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas Download PDF

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Publication number
US20110277673A1
US20110277673A1 US12/998,918 US99891809A US2011277673A1 US 20110277673 A1 US20110277673 A1 US 20110277673A1 US 99891809 A US99891809 A US 99891809A US 2011277673 A1 US2011277673 A1 US 2011277673A1
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Prior art keywords
burner
line
fuel
dense
stream
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Abandoned
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US12/998,918
Inventor
Stefan Hamel
Johannes Kowoll
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ThyssenKrupp Industrial Solutions AG
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Uhde GmbH
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Publication of US20110277673A1 publication Critical patent/US20110277673A1/en
Assigned to THYSSENKRUPP UHDE GMBH reassignment THYSSENKRUPP UHDE GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: UHDE GMBH
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/006—Fuel distribution and transport systems for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/20—Feeding/conveying devices
    • F23K2203/201—Feeding/conveying devices using pneumatic means

Definitions

  • the invention is directed at a method for uniformization and regulation of the solid fuels pneumatically conveyed using dense-stream conveying, into a gasifier for the production of synthesis gas.
  • Regulated feed of fuel dust in an entrained-flow gasifier is described, for example, in DE 10 2005 047 583 A.
  • the fuel composed of finely distributed or dust-type ( ⁇ 0.5 mm) fuel particles, for example coke, petro-coke, biological waste, and other fuels, is reacted with gasification agents that contain oxygen, under elevated pressure, at temperatures above the slag melting point.
  • a device and a method for pneumatic conveying of bulk materials, using the dense-stream method, are known from WO 2006/015702 A1.
  • a carbonaceous fuel is reacted with a gas that contains oxygen, whereby the gas that contains oxygen is fed in the sub-stoichiometric ratio, so that a product gas that contains hydrogen and carbon monoxide is obtained.
  • the fuel/oxygen ratio must be adjusted within a narrow range.
  • burners having coaxial channels are generally used, whereby mixing of the media being fed in takes place not in the burner, but only in the gasifier.
  • An example of a burner used in a pressurized gasification system is presented in detail in EP 0 437 698 A1, for example.
  • Supply of the burners with fuel usually takes place from a feed container that stands slightly above gasifier pressure, by means of dense-stream conveying.
  • pneumatic conveying is referred to as dense-stream conveying, whereby the carrier gas transports the fuel particles not as individual particles, but rather in the form of dense fillings or plugs that fill the entire pipe cross-section.
  • dense-stream conveying deliveries possess speeds of 4 to 6 m/s, whereby the high solids charge of the gas stream nevertheless leads to a high transport amount.
  • Dense-stream conveying is very gentle on the material and, above all, is not very susceptible to break-down with regard to sticky or damp transport material.
  • the quality of gasification is decisively influenced by the uniformity of the coal feed to the burner. While variations over longer time intervals (for example due to planned regulation measures or due to a change in the coal used, etc.) are determined by means of measurement technology and taken into consideration, very short-term fluctuations in the feed quality (feed density and velocity) cannot be compensated.
  • Setup of the feed container “at the bottom” is cost-advantageous, particularly if the required fuel transport into the feed container is based on gravity flow and therefore has to be positioned above the feed container.
  • This task is accomplished, according to the invention, with a method of the type mentioned initially, in that the fine-grain to dust-type fuel is first conveyed out of a feed container positioned below the burner level, to a level above the burner level, and subsequently homogenized in a line that is directed downward toward the burner.
  • the homogenization takes place in a line that is directed downward, whose length corresponds to at least five times the line diameter.
  • the fuel is homogenized in a drop line that is passed out of an elbow, whereby the drop line is oriented at angles ⁇ 20°, preferably at 0° from the vertical.
  • the range in which the drop line can be adjusted relative to the vertical can also be selected to be different from what is claimed here, depending on the material that is being used; the decisive factor is the homogenization in the drop pipe.
  • Another practical embodiment according to the invention consists in that gas is fed into the fuel stream, to regulate the fuel throughput, whereby mixing is undertaken just before or in the burner.
  • Dilution is brought about by adding auxiliary gas into the fuel stream being conveyed as a dense stream, in other words the conveying density is reduced. While the velocity of the diluted fuel is increased, the influence of the reduced density nevertheless predominates, whereby the throughput is reduced.
  • the example shows that very rapid adaptation of the fuel throughput is possible.
  • the regulation range is restricted by the required amount of gas and the fuel velocity in the burner, which is restricted due to erosion.
  • the fuel throughput can be changed by +/ ⁇ 10% in a typical application.
  • FIG. 1 a schematic layer diagram, as well as in
  • FIG. 2 an enlarged detail in the area of a burner, not shown in greater detail, in an indicated gasifier wall.
  • FIG. 1 shows the dense-stream conveying 2 a and 2 b out of the feed container 1 into the burners 4 a, 4 b of the gasifier 3 .
  • the exit of the feed container is lower than the burners, so that the fuel should be conveyed horizontally and upward.
  • the fuel is first passed to above burner level, and then, after deflection, homogenized in a drop line having a length of 3 m, for example.
  • the lines are deflected, in order to feed the fuel into the burners horizontally, and auxiliary gas 11 a, 11 b is fed into the line.
  • a gas 5 a, 5 b that contains oxygen and a moderation gas 6 a, 6 b are fed into the burner, and these influence the gasification parameters.
  • auxiliary gas 11 a, 11 b can be fed directly into the burner or into the fuel channel of the burner.
  • FIG. 2 shows an alternative embodiment of the method.
  • Dense-stream conveying 2 is passed into the vertical drop line in an arc.
  • Ahead of the burner tap 12 which is oriented vertically, an auxiliary gas 11 or part of the moderation gas 6 , for example CO 2 , is fed into the gas introduction device 10 , in order to reduce the conveying density and the fuel stream.
  • an auxiliary gas 11 or part of the moderation gas 6 for example CO 2

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

A method and a system for uniformization and regulation of the solid fuels pneumatically conveyed using dense-stream conveying, into a gasifier for the production of synthesis gas, is supposed to be configured in such a manner that clearly homogenized feed of the coal to the burner is made possible, whereby the short-term fluctuations are minimized and thus the gasification quality is improved, and regulation of the amounts of coal to the burner is structured to be more effective. This is achieved in that the fine-grain to dust-type fuel is first conveyed out of a feed container positioned below the burner level, to a level above the burner level, and subsequently homogenized in a line that is directed downward toward the burner.

Description

  • The invention is directed at a method for uniformization and regulation of the solid fuels pneumatically conveyed using dense-stream conveying, into a gasifier for the production of synthesis gas.
  • Regulated feed of fuel dust in an entrained-flow gasifier is described, for example, in DE 10 2005 047 583 A. In this connection, it is known to react the fuel using the burners that are built into the vertical gasifier wall and are essentially oriented horizontally, whereby the fuel, composed of finely distributed or dust-type (<0.5 mm) fuel particles, for example coke, petro-coke, biological waste, and other fuels, is reacted with gasification agents that contain oxygen, under elevated pressure, at temperatures above the slag melting point.
  • A device and a method for pneumatic conveying of bulk materials, using the dense-stream method, are known from WO 2006/015702 A1.
  • In the implementation of pressurized gasification processes, a carbonaceous fuel is reacted with a gas that contains oxygen, whereby the gas that contains oxygen is fed in the sub-stoichiometric ratio, so that a product gas that contains hydrogen and carbon monoxide is obtained. In order to achieve a high rate of reaction of the fuel and a high degree of efficiency, the fuel/oxygen ratio must be adjusted within a narrow range.
  • In pressurized gasification, burners having coaxial channels are generally used, whereby mixing of the media being fed in takes place not in the burner, but only in the gasifier. An example of a burner used in a pressurized gasification system is presented in detail in EP 0 437 698 A1, for example. Supply of the burners with fuel usually takes place from a feed container that stands slightly above gasifier pressure, by means of dense-stream conveying. In this connection, pneumatic conveying is referred to as dense-stream conveying, whereby the carrier gas transports the fuel particles not as individual particles, but rather in the form of dense fillings or plugs that fill the entire pipe cross-section. In general, dense-stream conveying deliveries possess speeds of 4 to 6 m/s, whereby the high solids charge of the gas stream nevertheless leads to a high transport amount. Dense-stream conveying is very gentle on the material and, above all, is not very susceptible to break-down with regard to sticky or damp transport material.
  • The quality of gasification is decisively influenced by the uniformity of the coal feed to the burner. While variations over longer time intervals (for example due to planned regulation measures or due to a change in the coal used, etc.) are determined by means of measurement technology and taken into consideration, very short-term fluctuations in the feed quality (feed density and velocity) cannot be compensated.
  • Since dense-stream conveying involves a fluidized gas/solid mixture, in the broadest sense, here, too, the fluctuations in density and velocity that are typical for a fluidized bed can be observed. These can only be influenced by means of indirect measures, such as the configuration of the feed into the feed line. For this purpose, it is furthermore known that settling phenomena of the solid can occur in long horizontal sections of the feed line, and this is usually minimized by means of the feed of additional gas. Further homogenization is achieved when the line leads upward once again.
  • Because of the space requirements and the system-specific setup, the situation usually is that the feed container that supplies the burners by way of a feed line is situated “at the bottom” in the system structure, while the burners are situated at a clearly higher level, because of the vertical method of construction of the gasifier. Setup of the feed container “at the bottom” is cost-advantageous, particularly if the required fuel transport into the feed container is based on gravity flow and therefore has to be positioned above the feed container.
  • Until now, the line placement of the feed line to the burners went from “the bottom” to “the top” at burner level, and there was led horizontally to the connector taps of the burner, in most cases, from where the coal went into the burner.
  • It is the task of the present invention to configure a method as described initially in such a manner that clearly homogenized feed of the coal to the burner is made possible, whereby the short-term fluctuations are minimized, and thus the gasification quality is improved, and regulation of the amounts of coal to the burner is structured more effectively.
  • This task is accomplished, according to the invention, with a method of the type mentioned initially, in that the fine-grain to dust-type fuel is first conveyed out of a feed container positioned below the burner level, to a level above the burner level, and subsequently homogenized in a line that is directed downward toward the burner.
  • It has been shown that uniformity of the fuel/gas mixture transported in the dense stream is achieved by means of the method of operation according to the invention, which uniformity is clearly better than conveying through lines that run horizontally. Because of the homogenization in the drop line ahead of the burner, the fuel particles are accelerated by gravity, whereby gas bubbles that might be contained in the mixture are filled with fuel as the mixture drops.
  • Embodiments are evident from the dependent claims. In this connection, it can be provided that the homogenization takes place in a line that is directed downward, whose length corresponds to at least five times the line diameter.
  • It has proven to be practical if the fuel is homogenized in a drop line that is passed out of an elbow, whereby the drop line is oriented at angles <20°, preferably at 0° from the vertical.
  • However, the range in which the drop line can be adjusted relative to the vertical can also be selected to be different from what is claimed here, depending on the material that is being used; the decisive factor is the homogenization in the drop pipe.
  • Another practical embodiment according to the invention consists in that gas is fed into the fuel stream, to regulate the fuel throughput, whereby mixing is undertaken just before or in the burner.
  • Dilution is brought about by adding auxiliary gas into the fuel stream being conveyed as a dense stream, in other words the conveying density is reduced. While the velocity of the diluted fuel is increased, the influence of the reduced density nevertheless predominates, whereby the throughput is reduced.
    • EXAMPLE
  • 10 kg/s fuel having a density of 400 kg/m3 and a velocity of 5 m/s are conveyed through a burner into the gasifier, using dense-stream conveying. Because of friction and upward conveying, a pressure loss of 100 kPa occurs in the pipeline. In the burner, a pressure loss of 20 kPa occurs due to friction and further acceleration of the suspension. In order to reduce the throughput, auxiliary gas is fed into the fuel line directly ahead of the burner, thereby almost doubling the volume stream. The pressure loss in the fuel channel of the burner is also doubled as a result. Since the fuel channel is only 2 m long, it is filled with the diluted fuel after only 0.2 s. The fuel throughput is already reduced after this short period of time.
  • The example shows that very rapid adaptation of the fuel throughput is possible. However, the regulation range is restricted by the required amount of gas and the fuel velocity in the burner, which is restricted due to erosion. With this method, the fuel throughput can be changed by +/−10% in a typical application.
  • The invention will be explained in greater detail below, using the drawing as an example. This shows, in
  • FIG. 1 a schematic layer diagram, as well as in
  • FIG. 2 an enlarged detail in the area of a burner, not shown in greater detail, in an indicated gasifier wall.
    •
  • FIG. 1 shows the dense-stream conveying 2 a and 2 b out of the feed container 1 into the burners 4 a, 4 b of the gasifier 3. The exit of the feed container is lower than the burners, so that the fuel should be conveyed horizontally and upward. However, in order to achieve a homogeneous fuel suspension, the fuel is first passed to above burner level, and then, after deflection, homogenized in a drop line having a length of 3 m, for example. Just ahead of the burner, the lines are deflected, in order to feed the fuel into the burners horizontally, and auxiliary gas 11 a, 11 b is fed into the line. Also, a gas 5 a, 5 b that contains oxygen and a moderation gas 6 a, 6 b are fed into the burner, and these influence the gasification parameters.
  • Alternatively, the auxiliary gas 11 a, 11 b can be fed directly into the burner or into the fuel channel of the burner.
  • FIG. 2 shows an alternative embodiment of the method. Dense-stream conveying 2 is passed into the vertical drop line in an arc. Ahead of the burner tap 12, which is oriented vertically, an auxiliary gas 11 or part of the moderation gas 6, for example CO2, is fed into the gas introduction device 10, in order to reduce the conveying density and the fuel stream.

Claims (8)

1: Method for uniformization and regulation of the solid fuels pneumatically conveyed using dense-stream conveying, into a gasifier for the production of synthesis gas,
whereby
the fine-grain to dust-type fuel is first conveyed out of a feed container positioned below the burner level, to a level above the burner level, and subsequently homogenized in a line that is directed downward toward the burner, wherein gas is fed into the fuel stream, to regulate the fuel throughput, whereby mixing is undertaken just before or in the burner, and wherein for temperature regulation, in particular, at least a part of the gas used in the gasifier (moderation gas) is introduced into the conveyed fuel.
2: Method according to claim 1, wherein
the homogenization takes place in a line that is directed downward, the length of which line corresponds to at least five times the line diameter.
3: Method according to claim 1, wherein
the fuel is homogenized in a drop line that is passed out of an elbow, whereby the drop line is oriented at angles <20°, preferably at 0° from the vertical.
4-5. (canceled)
6: Method according to claim 1, wherein
additional gas, such as nitrogen, carbon dioxide, steam, other inert gases or mixtures of them, is used.
7: Method according to claim 6, wherein
the additional gas is introduced by way of a pipe tap, in the immediate vicinity of the burner.
8: System for uniformization and regulation of the solid fuels pneumatically conveyed using dense-stream conveying, into a gasifier (3) for the production of synthesis gas, particularly for carrying out the method according to claim 1, further comprising dense-stream conveying lines (2, 2 a, 2 b) from a feed container (1) to the burners (4, 4 a, 4 b) of the gasifier (3), whereby the end region of the dense-stream conveying line (2) is positioned perpendicular ahead of the burner (4), in each instance.
9: System according to claim 8, wherein
the length of the perpendicular dense-stream line section corresponds to at least five times the dense-stream line diameter.
US12/998,918 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas Abandoned US20110277673A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008063505.7 2008-12-17
DE102008063505A DE102008063505A1 (en) 2008-12-17 2008-12-17 Process for equalizing the production of fuels in a gasifier for the production of synthesis gas
PCT/EP2009/008268 WO2010075911A1 (en) 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas

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US (1) US20110277673A1 (en)
EP (1) EP2359060A1 (en)
KR (1) KR20110094308A (en)
CN (1) CN102257322A (en)
AP (1) AP2011005727A0 (en)
AU (1) AU2009335360A1 (en)
BR (1) BRPI0923040A2 (en)
CA (1) CA2747298A1 (en)
CU (1) CU20110125A7 (en)
DE (1) DE102008063505A1 (en)
RU (1) RU2011129566A (en)
TW (1) TW201030138A (en)
UA (1) UA103213C2 (en)
WO (1) WO2010075911A1 (en)
ZA (1) ZA201105161B (en)

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US3707172A (en) * 1971-01-25 1972-12-26 Kaisuji Obara Automatic apparatus for packaging powdered material with uniform bag weight and with dust-free operation
US4483199A (en) * 1981-09-22 1984-11-20 Brennstoffinstitut Freiberg Method of measuring solid matter mass flow
US4515503A (en) * 1981-03-09 1985-05-07 Macawber Engineering Limited Method and apparatus for unblocking conveying pipes for particulate material
US4552490A (en) * 1983-04-07 1985-11-12 Foster Wheeler Energy Corporation Solids feed control valve assembly
US5400725A (en) * 1992-03-06 1995-03-28 Abb Carbon Ab Method and device for feeding particulate material into a pressurized container
US5463967A (en) * 1994-07-21 1995-11-07 Airflow Sciences Corporation Static mixer device for improving homogeneity of a characteristic of a mixture stream created from fluid streams separately entering the device
US5657704A (en) * 1996-01-23 1997-08-19 The Babcock & Wilcox Company Continuous high pressure solids pump system
US20050161451A1 (en) * 2004-01-22 2005-07-28 Wacker-Chemie Gmbh Arrangement for transporting highly dispersed powders, and method of filling and emptying the same
US20050269365A1 (en) * 2004-06-08 2005-12-08 Boroch Anthony E System for pneumatically conveying bulk materials with improved discharge arrangement
US20060254483A1 (en) * 2002-12-11 2006-11-16 Alstom (Switzerland) Ltd Indirect heating system with upgrading of ultra-fine fuel particles
US20070212175A1 (en) * 2004-08-05 2007-09-13 Patrik Ernst Device and Method for Pneumatic Conveying of Bulk Materials in a Dense Flow Process
US20070274789A1 (en) * 2006-05-24 2007-11-29 Debruin Bruce Roger Crystallizing conveyor
US20080110090A1 (en) * 2006-11-15 2008-05-15 C166, An Llc Registered In Florida Gasification of fuel in a slagging gasifier
US7416573B2 (en) * 2005-02-23 2008-08-26 Blender Products, Inc. Method and apparatus for suppressing sparks
US7959890B2 (en) * 2009-03-24 2011-06-14 Ripp Resource Recovery Corporation Method of reclaiming carbonaceous materials from scrap tires and products derived therefrom

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US1924123A (en) * 1928-10-26 1933-08-29 Joseph E Kennedy Means for feeding pulverized fuel to furnaces
US2805897A (en) * 1954-02-23 1957-09-10 Bituminous Coal Research Pneumatic fluidized material handling system
US4173189A (en) * 1977-01-21 1979-11-06 Combustion Engineering, Inc. Boiler cold start using pulverized coal in ignitor burners
ES2038862T3 (en) 1989-12-19 1993-08-01 Krupp Koppers Gmbh PROCEDURE FOR OPERATING A SOLID FUEL GASIFICATION FACILITY.
DE202005021660U1 (en) 2005-10-04 2009-03-05 Siemens Aktiengesellschaft Apparatus for the controlled supply of combustible dust in an air flow gasifier

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707172A (en) * 1971-01-25 1972-12-26 Kaisuji Obara Automatic apparatus for packaging powdered material with uniform bag weight and with dust-free operation
US4515503A (en) * 1981-03-09 1985-05-07 Macawber Engineering Limited Method and apparatus for unblocking conveying pipes for particulate material
US4483199A (en) * 1981-09-22 1984-11-20 Brennstoffinstitut Freiberg Method of measuring solid matter mass flow
US4552490A (en) * 1983-04-07 1985-11-12 Foster Wheeler Energy Corporation Solids feed control valve assembly
US5400725A (en) * 1992-03-06 1995-03-28 Abb Carbon Ab Method and device for feeding particulate material into a pressurized container
US5463967A (en) * 1994-07-21 1995-11-07 Airflow Sciences Corporation Static mixer device for improving homogeneity of a characteristic of a mixture stream created from fluid streams separately entering the device
US5657704A (en) * 1996-01-23 1997-08-19 The Babcock & Wilcox Company Continuous high pressure solids pump system
US20060254483A1 (en) * 2002-12-11 2006-11-16 Alstom (Switzerland) Ltd Indirect heating system with upgrading of ultra-fine fuel particles
US20050161451A1 (en) * 2004-01-22 2005-07-28 Wacker-Chemie Gmbh Arrangement for transporting highly dispersed powders, and method of filling and emptying the same
US20050269365A1 (en) * 2004-06-08 2005-12-08 Boroch Anthony E System for pneumatically conveying bulk materials with improved discharge arrangement
US20070212175A1 (en) * 2004-08-05 2007-09-13 Patrik Ernst Device and Method for Pneumatic Conveying of Bulk Materials in a Dense Flow Process
US7416573B2 (en) * 2005-02-23 2008-08-26 Blender Products, Inc. Method and apparatus for suppressing sparks
US20070274789A1 (en) * 2006-05-24 2007-11-29 Debruin Bruce Roger Crystallizing conveyor
US20080110090A1 (en) * 2006-11-15 2008-05-15 C166, An Llc Registered In Florida Gasification of fuel in a slagging gasifier
US7959890B2 (en) * 2009-03-24 2011-06-14 Ripp Resource Recovery Corporation Method of reclaiming carbonaceous materials from scrap tires and products derived therefrom

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ZA201105161B (en) 2012-03-28
KR20110094308A (en) 2011-08-23
CN102257322A (en) 2011-11-23
CU20110125A7 (en) 2012-06-21
AU2009335360A1 (en) 2010-07-08
WO2010075911A4 (en) 2010-08-26
BRPI0923040A2 (en) 2015-12-15
EP2359060A1 (en) 2011-08-24
UA103213C2 (en) 2013-09-25
AP2011005727A0 (en) 2011-06-30
DE102008063505A1 (en) 2010-07-01
CA2747298A1 (en) 2010-07-08
TW201030138A (en) 2010-08-16
WO2010075911A1 (en) 2010-07-08
RU2011129566A (en) 2013-01-27

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