US20100058961A1 - Pulverized coal burner - Google Patents
Pulverized coal burner Download PDFInfo
- Publication number
- US20100058961A1 US20100058961A1 US12/524,885 US52488507A US2010058961A1 US 20100058961 A1 US20100058961 A1 US 20100058961A1 US 52488507 A US52488507 A US 52488507A US 2010058961 A1 US2010058961 A1 US 2010058961A1
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- US
- United States
- Prior art keywords
- pulverized coal
- air
- nozzle body
- furnace
- fuel flow
- 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.)
- Abandoned
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
Definitions
- the present invention relates to a pulverized coal burner for a furnace such as coal-fired boiler which uses coal as fuel.
- raw coal is pulverized into pulverized coal by a coal pulverizer and pulverized coal is mixed and fed with primary air into a pulverized coal burner where the pulverized coal is injected to the furnace for suspension combustion.
- reference numeral 1 denotes a furnace; and 2 , a wall of the furnace 1 .
- a throat 3 is installed on the furnace wall 2 and a wind box 4 is arranged on a side away from the furnace 1 .
- a pulverized coal burner 5 is arranged in the wind box 4 coaxially of the throat 3 .
- the pulverized coal burner 5 comprises a nozzle body 6 and a secondary air adjusting device 7 which surrounds a front end of the nozzle body 6 .
- the nozzle body 6 comprises an outer sleeve 8 , an inner sleeve 9 coaxial of the sleeve 8 and an oil burner 11 arranged on an axis of the sleeve 9 .
- the outer sleeve 8 comprises a base (an end away from the furnace 1 ) 8 a, an intermediate portion 8 b contiguous with the base 8 a and a front end 8 c contiguous with the intermediate portion 8 b.
- the base 8 a is a cylinder with a constant radius of cross section; the intermediate portion 8 b and the front end 8 c are cylinders tapered with radii of cross section reduced toward the furnace 1 , respectively.
- the front end 8 c has a tapered angle greater than that of the intermediate portion 8 b and therefore has radii reduced more greatly than those of the intermediate portion 8 b.
- the inner sleeve 9 comprises a cylindrical portion 9 a and a front end 9 c contiguous with the cylindrical portion 9 a.
- the cylindrical portion 9 a is a cylinder with a constant radius of cross section and extending adjacent to a front side of the outer sleeve intermediate portion 8 b, and the front end 9 c is tapered with a tapered angle similar to that of the outer sleeve front end 8 c.
- Formed between the sleeves 8 and 9 is a hollow, cylindrical, fuel flow space 10 with an end open to the furnace 1 .
- the base (the end away from the furnace 1 ) of the outer sleeve 8 communicates with a primary air feed pipe 12 through which primary air 14 carrying the pulverized coal to finally serve as combustion air as well as the pulverized coal carried by the air 14 tangentially flow into and swirl in the space 10 and are injected through the front end of the space.
- a tertiary air feed pipe 13 has one end open to the base of the inner sleeve 9 and has the other end open to the wind box 4 , so that combustion air fed to the wind box 4 is taken in and is guided to the inner sleeve 9 as auxiliary combustion air, i.e., tertiary combustion air.
- the secondary air adjusting device 7 comprises an auxiliary air adjusting mechanism 15 accommodating the front end of the nozzle body 6 and a main air adjusting mechanism 16 arranged coaxially and outward of the mechanism 15 .
- the auxiliary air adjusting mechanism 15 comprises a first air guide duct 18 with diameters reduced toward a front end of the duct and air volume adjusting vanes 19 circumferentially equidistantly arranged in a base of the duct 18 , the vanes 19 being rotatable about rotary axes 21 in sync.
- the main air adjusting mechanism 16 comprises a second air guide duct 22 with diameters reduced toward its front end and air volume adjusting vanes 23 circumferentially equidistantly arranged in a base of the duct 22 , the vanes 23 being rotatable about rotary axes 24 in sync.
- the front end of the second air guide duct 22 is contiguous with the throat 3 .
- the front end of the first air guide duct 18 is set back from an inner wall surface of the furnace wall 2 .
- the front ends of the sleeves 8 and 9 are set back further from the front end of the guide duct 18 .
- the pulverized coal is fed together with the primary air 14 through the primary air feed pipe 12 into the base of the fuel flow space 10 .
- the primary air 14 swirls in the space 10 toward the furnace 1 , is reduced in flow during its passage through the space 10 and is injected through the front end of the outer sleeve 8 .
- the wind box 4 is fed with the secondary air 26 as auxiliary combustion air which is air-volume adjusted by the vanes 23 and is injected together with the primary air 14 and fuel into the furnace 1 via the second air guide duct 22 .
- Part of the secondary air 26 taken in the second air guide duct 22 is taken via the air volume adjusting vanes 19 into the first air guide duct 18 and is injected as secondary auxiliary air. Air volume adjustments by the vanes 23 and 19 change feed flow condition of the secondary air to adjust the combustion condition of the fuel.
- Part of the secondary air 26 is guided as the tertiary air 27 via the tertiary air feed pipe 13 into and is injected from the inner sleeve 9 . Injection of the tertiary air 27 adjusts the combustion condition of the fuel.
- combustion condition of the fuel is adjusted to optimum.
- the oil burner 11 is used for ignition of the pulverized coal.
- the outer and inner sleeve front ends 8 c and 9 c are drastically reduced in diameter toward their front sides, so that the primary air 14 flowing through the fuel flow space 10 and the tertiary air 27 flowing through the inner sleeve 9 are reduced in flow and are injected. Consequently, the primary air 14 transporting the pulverized coal (hereinafter, pulverized coal and primary air 14 in combination is referred to as primary air 14 ) is injected through the front ends of the outer sleeve 8 and first air guide duct 18 while expanding. The primary air 14 swirls while being reduced in flow, and further expands by centrifugal force due to the swirling. Thus, the pulverized coal in the primary air 14 is burned while expanding.
- slagging may occur which is a phenomenon that clinker as combustion residue of the pulverized coal impinges and deposits on the furnace wall 2 .
- the slagging may impair heat transmission of the furnace wall 2 and cause heat accumulation on the furnace wall 2 , resulting in increase in temperature of the furnace wall 2 and hence of the furnace 1 .
- the increase in temperature of the furnace wall 2 and of the furnace 1 may melt the clinker, so that disadvantageously slagging may occur more easily and NO x may be generated more easily.
- the nozzle has larger diameter in comparison with axial length; the pulverized coal burner is short in axial length relative to diameter.
- the pulverized coal burner Because of shortness in axial length, the pulverized coal burner has less straightening effect, so that the primary air 14 flowing into the fuel flow space 10 is injected from the nozzle body 6 while it remains strongly swirling. Thus, due to centrifugal force, the pulverized coal in the primary air 14 expands or impinges, so that slagging may occur very easily.
- the invention was made in view of the above and has its object to prevent slagging from occurring in a pulverized coal burner.
- the invention is directed to a pulverized coal burner comprising a nozzle body open to a furnace and through which pulverized coal is injected together with combustion air, said nozzle body comprising an outer sleeve and an inner sleeve arranged in and coaxially of said outer sleeve, a fuel flow space being formed between said outer and inner sleeves, straightening plates being provided on at least one of said outer and inner sleeves, said straightening plates projecting in said fuel flow space and extending axially of said nozzle body, said combustion air transporting the pulverized coal passing through said fuel flow space and being injected.
- a nozzle body open to a furnace and for injection of pulverized coal together with combustion air comprises an outer sleeve and an inner sleeve arranged in and coaxially of the outer sleeve.
- a fuel flow space is formed between the sleeves.
- Straightening plates are arranged in at least either of the outer and inner sleeves and are projected to the fuel flow space and extend on an axis of the nozzle body, so that the combustion air transporting the pulverized coal passes through the fuel flow space and is injected.
- FIG. 1 is a sectional view showing a conventional pulverized coal burner
- FIG. 2 is a sectional view showing a pulverized coal burner according to an embodiment of the invention.
- FIG. 2 shows a pulverized coal burner according to the invention.
- the parts similar to those shown in FIG. 1 are represented by the same reference numerals and explanations thereon are omitted.
- a pulverized coal burner 5 comprises a nozzle body 6 and a secondary air adjusting device 7 .
- the burner 5 is arranged coaxially of a throat 3 open to the furnace wall 2 .
- the burner 5 is arranged in a wind box 4 .
- the nozzle body 6 comprises an outer sleeve 8 and an inner sleeve 9 coaxially of the outer sleeve 8 .
- the nozzle body 6 has a greater diameter relative to its axial length (see, for example, the conventional example shown in FIG. 1 ).
- FIG. 2 shows an example of the nozzle body 6 with larger diameters. That is, the outer sleeve 8 has larger diameters in comparison with the inner sleeve 9 , which fact increases cross-sectional area of flow passage in the fuel flow space 10 .
- the plates 29 are arranged in parallel with an axis of the outer sleeve 8 so as to project radially and extend axially of the sleeve 8 .
- the plates 29 are positioned circumferentially equidistantly; for example, there are three plates 29 at three positions divided circumferentially equidistantly.
- the wind box 4 is supplied with secondary air 26 from a forced draft fan (not shown).
- the secondary air 26 is injected from the throat 3 via the secondary air adjusting device 7 .
- a base of the nozzle body 6 extends out of the wind box 4 and an outer tube base 8 a communicates with a primary air feed pipe 12 , and an end of the inner sleeve 9 communicates with a tertiary air feed pipe 13 .
- the primary air feed pipe 12 is connected through a coal pulverizer (not shown) to a forced draft fan (not shown). By the feed pipe 12 , primary air 14 transporting the pulverized coal is introduced into the fuel flow space 10 .
- the tertiary air feed pipe 13 takes in and feeds part of the secondary air 26 into the inner sleeve 9 .
- the primary air 14 which is fed to the fuel flow space 10 , swirls about the inner sleeve 9 and flows forward.
- the straightening plates 29 which are arranged in the fuel flow space 10 , prevents and straightens the swirling in the space 10 into axial straightening flow.
- any straightening plates 29 will do, provided that they have the proper function of weakening the swirling of the primary air 14 .
- the plates 29 may have inner edges substantially in contact with the inner sleeve 9 ; alternatively, the inner edges may be spaced apart from the inner sleeve 9 by a required distance so as not to weaken the swirling at the central position.
- the plates 29 may be perforated to allow required swirling. Axial length and numbers of the plates 29 are properly selected so as to attain optimum combustion.
- the plates 29 may be arranged on the inner sleeve 9 ; alternatively, they may be arranged on the inner and outer sleeves 9 and 8 , alternately.
Abstract
Slagging is prevented from occurring in a pulverized coal burner.
A nozzle body 6, which is open to a furnace 1 and which injects pulverized coal together with primary air 14 transporting the coal to serve finally as combustion air, has an outer sleeve 8 and an inner sleeve 9 arranged in and coaxially of the sleeve 8. A fuel flow space 10 is formed between the sleeves 8 and 9. Straightening plates 29 are arranged on at least either of the sleeves 8 and 9 to project to the space 10 and extend axially of the nozzle body. The combustion air (primary air 14) carrying the pulverized coal passes through the space 10 and is injected.
Description
- The present invention relates to a pulverized coal burner for a furnace such as coal-fired boiler which uses coal as fuel.
- In one of furnaces using coal as fuel, raw coal is pulverized into pulverized coal by a coal pulverizer and pulverized coal is mixed and fed with primary air into a pulverized coal burner where the pulverized coal is injected to the furnace for suspension combustion.
- The conventional pulverized coal burner will be described in conjunction with
FIG. 1 . - In
FIG. 1 ,reference numeral 1 denotes a furnace; and 2, a wall of thefurnace 1. - A
throat 3 is installed on thefurnace wall 2 and awind box 4 is arranged on a side away from thefurnace 1. A pulverizedcoal burner 5 is arranged in thewind box 4 coaxially of thethroat 3. - The pulverized
coal burner 5 comprises a nozzle body 6 and a secondary air adjustingdevice 7 which surrounds a front end of the nozzle body 6. - The nozzle body 6 comprises an
outer sleeve 8, an inner sleeve 9 coaxial of thesleeve 8 and anoil burner 11 arranged on an axis of the sleeve 9. - The
outer sleeve 8 comprises a base (an end away from the furnace 1) 8 a, anintermediate portion 8 b contiguous with thebase 8 a and afront end 8 c contiguous with theintermediate portion 8 b. Thebase 8 a is a cylinder with a constant radius of cross section; theintermediate portion 8 b and thefront end 8 c are cylinders tapered with radii of cross section reduced toward thefurnace 1, respectively. Thefront end 8 c has a tapered angle greater than that of theintermediate portion 8 b and therefore has radii reduced more greatly than those of theintermediate portion 8 b. - The inner sleeve 9 comprises a
cylindrical portion 9 a and afront end 9 c contiguous with thecylindrical portion 9 a. Thecylindrical portion 9 a is a cylinder with a constant radius of cross section and extending adjacent to a front side of the outer sleeveintermediate portion 8 b, and thefront end 9 c is tapered with a tapered angle similar to that of the outersleeve front end 8 c. Formed between thesleeves 8 and 9 is a hollow, cylindrical,fuel flow space 10 with an end open to thefurnace 1. - The base (the end away from the furnace 1) of the
outer sleeve 8 communicates with a primaryair feed pipe 12 through whichprimary air 14 carrying the pulverized coal to finally serve as combustion air as well as the pulverized coal carried by theair 14 tangentially flow into and swirl in thespace 10 and are injected through the front end of the space. A tertiaryair feed pipe 13 has one end open to the base of the inner sleeve 9 and has the other end open to thewind box 4, so that combustion air fed to thewind box 4 is taken in and is guided to the inner sleeve 9 as auxiliary combustion air, i.e., tertiary combustion air. - The secondary
air adjusting device 7 comprises an auxiliaryair adjusting mechanism 15 accommodating the front end of the nozzle body 6 and a mainair adjusting mechanism 16 arranged coaxially and outward of themechanism 15. - The auxiliary
air adjusting mechanism 15 comprises a firstair guide duct 18 with diameters reduced toward a front end of the duct and airvolume adjusting vanes 19 circumferentially equidistantly arranged in a base of theduct 18, thevanes 19 being rotatable aboutrotary axes 21 in sync. - The main
air adjusting mechanism 16 comprises a secondair guide duct 22 with diameters reduced toward its front end and airvolume adjusting vanes 23 circumferentially equidistantly arranged in a base of theduct 22, thevanes 23 being rotatable aboutrotary axes 24 in sync. - The front end of the second
air guide duct 22 is contiguous with thethroat 3. The front end of the firstair guide duct 18 is set back from an inner wall surface of thefurnace wall 2. The front ends of thesleeves 8 and 9 are set back further from the front end of theguide duct 18. - Combustion in the above-mentioned pulverized coal burner will be described briefly. The pulverized coal is fed together with the
primary air 14 through the primaryair feed pipe 12 into the base of thefuel flow space 10. Theprimary air 14 swirls in thespace 10 toward thefurnace 1, is reduced in flow during its passage through thespace 10 and is injected through the front end of theouter sleeve 8. Thewind box 4 is fed with thesecondary air 26 as auxiliary combustion air which is air-volume adjusted by thevanes 23 and is injected together with theprimary air 14 and fuel into thefurnace 1 via the secondair guide duct 22. - Part of the
secondary air 26 taken in the secondair guide duct 22 is taken via the airvolume adjusting vanes 19 into the firstair guide duct 18 and is injected as secondary auxiliary air. Air volume adjustments by thevanes - Part of the
secondary air 26 is guided as thetertiary air 27 via the tertiaryair feed pipe 13 into and is injected from the inner sleeve 9. Injection of thetertiary air 27 adjusts the combustion condition of the fuel. - Thus, by adjustment of, for example, the secondary and tertiary airs, combustion condition of the fuel is adjusted to optimum.
- The
oil burner 11 is used for ignition of the pulverized coal. - In the above-mentioned conventional pulverized coal burner, the outer and inner
sleeve front ends primary air 14 flowing through thefuel flow space 10 and thetertiary air 27 flowing through the inner sleeve 9 are reduced in flow and are injected. Consequently, theprimary air 14 transporting the pulverized coal (hereinafter, pulverized coal andprimary air 14 in combination is referred to as primary air 14) is injected through the front ends of theouter sleeve 8 and firstair guide duct 18 while expanding. Theprimary air 14 swirls while being reduced in flow, and further expands by centrifugal force due to the swirling. Thus, the pulverized coal in theprimary air 14 is burned while expanding. - As a result, slagging may occur which is a phenomenon that clinker as combustion residue of the pulverized coal impinges and deposits on the
furnace wall 2. The slagging may impair heat transmission of thefurnace wall 2 and cause heat accumulation on thefurnace wall 2, resulting in increase in temperature of thefurnace wall 2 and hence of thefurnace 1. The increase in temperature of thefurnace wall 2 and of thefurnace 1 may melt the clinker, so that disadvantageously slagging may occur more easily and NOxmay be generated more easily. - In recent years, in order to increase combustion capacity of a pulverized coal burner, i.e., in order that much more pulverized coal can be burned, pulverized coal burners have been increased in size. To cope with increased combustion capacity of the pulverized coal burner, the nozzle is made larger-sized; however, its axial length remains limitative owing to installational restrictions.
- As a result, the nozzle has larger diameter in comparison with axial length; the pulverized coal burner is short in axial length relative to diameter.
- Because of shortness in axial length, the pulverized coal burner has less straightening effect, so that the
primary air 14 flowing into thefuel flow space 10 is injected from the nozzle body 6 while it remains strongly swirling. Thus, due to centrifugal force, the pulverized coal in theprimary air 14 expands or impinges, so that slagging may occur very easily. - [Patent Literature 1] JP 8-145320A
- The invention was made in view of the above and has its object to prevent slagging from occurring in a pulverized coal burner.
- The invention is directed to a pulverized coal burner comprising a nozzle body open to a furnace and through which pulverized coal is injected together with combustion air, said nozzle body comprising an outer sleeve and an inner sleeve arranged in and coaxially of said outer sleeve, a fuel flow space being formed between said outer and inner sleeves, straightening plates being provided on at least one of said outer and inner sleeves, said straightening plates projecting in said fuel flow space and extending axially of said nozzle body, said combustion air transporting the pulverized coal passing through said fuel flow space and being injected.
- According to the invention, a nozzle body open to a furnace and for injection of pulverized coal together with combustion air comprises an outer sleeve and an inner sleeve arranged in and coaxially of the outer sleeve. A fuel flow space is formed between the sleeves. Straightening plates are arranged in at least either of the outer and inner sleeves and are projected to the fuel flow space and extend on an axis of the nozzle body, so that the combustion air transporting the pulverized coal passes through the fuel flow space and is injected. When the primary air transporting the pulverized coal to finally serve as combustion air as well as the pulverized coal flow through the fuel flow space, swirling is weakened by the straightening plates and the pulverized coal injected via the nozzle body is prevented from expanding and impinging, thereby preventing the slagging from occurring.
-
FIG. 1 is a sectional view showing a conventional pulverized coal burner; and -
FIG. 2 is a sectional view showing a pulverized coal burner according to an embodiment of the invention. -
- 1 furnace
- 2 furnace wall
- 3 throat
- 4 wind box
- 6 nozzle body
- 14 primary air (combustion air)
- 18 first air guide duct
- 22 second air guide duct
- 26 secondary air
- 27 tertiary air
- 29 straightening plate
- An embodiment of the invention will be described in conjunction with the drawings.
-
FIG. 2 shows a pulverized coal burner according to the invention. InFIG. 2 , the parts similar to those shown inFIG. 1 are represented by the same reference numerals and explanations thereon are omitted. - A pulverized
coal burner 5 comprises a nozzle body 6 and a secondaryair adjusting device 7. Theburner 5 is arranged coaxially of athroat 3 open to thefurnace wall 2. Theburner 5 is arranged in awind box 4. - The nozzle body 6 comprises an
outer sleeve 8 and an inner sleeve 9 coaxially of theouter sleeve 8. Formed between thesleeves 8 and 9 is a hollow, cylindricalfuel flow space 10. The nozzle body 6 has a greater diameter relative to its axial length (see, for example, the conventional example shown inFIG. 1 ). -
FIG. 2 shows an example of the nozzle body 6 with larger diameters. That is, theouter sleeve 8 has larger diameters in comparison with the inner sleeve 9, which fact increases cross-sectional area of flow passage in thefuel flow space 10. - Formed on an inner surface of the
outer sleeve 8 are straighteningplates 29 which project in thefuel flow space 10. Theplates 29 are arranged in parallel with an axis of theouter sleeve 8 so as to project radially and extend axially of thesleeve 8. Theplates 29 are positioned circumferentially equidistantly; for example, there are threeplates 29 at three positions divided circumferentially equidistantly. - The
wind box 4 is supplied withsecondary air 26 from a forced draft fan (not shown). Thesecondary air 26 is injected from thethroat 3 via the secondaryair adjusting device 7. - A base of the nozzle body 6 extends out of the
wind box 4 and anouter tube base 8 a communicates with a primaryair feed pipe 12, and an end of the inner sleeve 9 communicates with a tertiaryair feed pipe 13. The primaryair feed pipe 12 is connected through a coal pulverizer (not shown) to a forced draft fan (not shown). By thefeed pipe 12,primary air 14 transporting the pulverized coal is introduced into thefuel flow space 10. The tertiaryair feed pipe 13 takes in and feeds part of thesecondary air 26 into the inner sleeve 9. - The
primary air 14, which is fed to thefuel flow space 10, swirls about the inner sleeve 9 and flows forward. The straighteningplates 29, which are arranged in thefuel flow space 10, prevents and straightens the swirling in thespace 10 into axial straightening flow. - Weakening of the swirling of the
primary air 14 prevents the swirling of the pulverized coal transported by theprimary air 14. Thus, expansion of theprimary air 14 and dispersing of the pulverized coal injected through theouter sleeve 8 are weakened to prevent slagging from occurring. - Any straightening
plates 29 will do, provided that they have the proper function of weakening the swirling of theprimary air 14. Theplates 29 may have inner edges substantially in contact with the inner sleeve 9; alternatively, the inner edges may be spaced apart from the inner sleeve 9 by a required distance so as not to weaken the swirling at the central position. Moreover, theplates 29 may be perforated to allow required swirling. Axial length and numbers of theplates 29 are properly selected so as to attain optimum combustion. - Alternatively, the
plates 29 may be arranged on the inner sleeve 9; alternatively, they may be arranged on the inner andouter sleeves 9 and 8, alternately.
Claims (1)
1. A pulverized coal burner comprising a nozzle body open to a furnace and through which pulverized coal is injected together with combustion air, said nozzle body comprising an outer sleeve and an inner sleeve arranged in and coaxially of said outer sleeve, a fuel flow space being formed between said outer and inner sleeves, straightening plates being provided on at least one of said outer and inner sleeves, said straightening plates projecting in said fuel flow space and extending axially of said nozzle body, said combustion air transporting the pulverized coal passing through said fuel flow space and being injected.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007038147A JP2008202836A (en) | 2007-02-19 | 2007-02-19 | Pulverized coal burner |
JP2007-038147 | 2007-02-19 | ||
PCT/JP2007/001448 WO2008102420A1 (en) | 2007-02-19 | 2007-12-21 | Pulverized coal burner |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100058961A1 true US20100058961A1 (en) | 2010-03-11 |
Family
ID=39709705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/524,885 Abandoned US20100058961A1 (en) | 2007-02-19 | 2007-12-21 | Pulverized coal burner |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100058961A1 (en) |
JP (1) | JP2008202836A (en) |
DE (1) | DE112007003317T5 (en) |
WO (1) | WO2008102420A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100307391A1 (en) * | 2008-03-10 | 2010-12-09 | Ihi Corporation | Pulverized fuel burner |
US20110127355A1 (en) * | 2009-05-27 | 2011-06-02 | Ihi Corporation | Burner |
US20110126780A1 (en) * | 2008-03-06 | 2011-06-02 | Ihi Corporation | Pulverized coal burner for oxyfuel combustion boiler |
US20110139048A1 (en) * | 2008-08-08 | 2011-06-16 | Ihi Corporation | Burner |
EP2592341A1 (en) | 2011-11-09 | 2013-05-15 | Fortum OYJ | Pulverized fuel burner |
US20130134232A1 (en) * | 2009-12-03 | 2013-05-30 | Xiangqi Wang | Injector and method for co-feeding solid and liquid fuels |
CN112708471A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Efficient coal gasification reaction device and efficient coal gasification reaction method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022024386A1 (en) * | 2020-07-31 | 2022-02-03 | 三菱パワー株式会社 | Cyclone burner, nozzle unit, and cyclone burner alteration method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912942A (en) * | 1954-07-29 | 1959-11-17 | Foster Wheeler Corp | Pulverized fuel burner |
JPH09133323A (en) * | 1995-11-10 | 1997-05-20 | Mitsubishi Heavy Ind Ltd | Pulverized coal combustion apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3433507B2 (en) * | 1994-04-20 | 2003-08-04 | 石川島播磨重工業株式会社 | Clinker removal device |
JP3377626B2 (en) * | 1994-11-14 | 2003-02-17 | 三菱重工業株式会社 | Pulverized coal burner |
JPH08145320A (en) | 1994-11-18 | 1996-06-07 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal burner |
JP3468984B2 (en) * | 1996-05-02 | 2003-11-25 | 三菱重工業株式会社 | Round burner |
-
2007
- 2007-02-19 JP JP2007038147A patent/JP2008202836A/en active Pending
- 2007-12-21 WO PCT/JP2007/001448 patent/WO2008102420A1/en active Application Filing
- 2007-12-21 US US12/524,885 patent/US20100058961A1/en not_active Abandoned
- 2007-12-21 DE DE112007003317T patent/DE112007003317T5/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912942A (en) * | 1954-07-29 | 1959-11-17 | Foster Wheeler Corp | Pulverized fuel burner |
JPH09133323A (en) * | 1995-11-10 | 1997-05-20 | Mitsubishi Heavy Ind Ltd | Pulverized coal combustion apparatus |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110126780A1 (en) * | 2008-03-06 | 2011-06-02 | Ihi Corporation | Pulverized coal burner for oxyfuel combustion boiler |
US9810425B2 (en) * | 2008-03-06 | 2017-11-07 | Ihi Corporation | Pulverized coal burner for oxyfuel combustion boiler |
US20100307391A1 (en) * | 2008-03-10 | 2010-12-09 | Ihi Corporation | Pulverized fuel burner |
US20110139048A1 (en) * | 2008-08-08 | 2011-06-16 | Ihi Corporation | Burner |
US8726819B2 (en) | 2008-08-08 | 2014-05-20 | Ihi Corporation | Burner |
US20110127355A1 (en) * | 2009-05-27 | 2011-06-02 | Ihi Corporation | Burner |
US8646394B2 (en) | 2009-05-27 | 2014-02-11 | Ihi Corporation | Burner |
US8820249B2 (en) | 2009-05-27 | 2014-09-02 | Ihi Corporation | Burner |
US20130134232A1 (en) * | 2009-12-03 | 2013-05-30 | Xiangqi Wang | Injector and method for co-feeding solid and liquid fuels |
US9328301B2 (en) * | 2009-12-03 | 2016-05-03 | General Electric Company | Injector and method for co-feeding solid and liquid fuels |
EP2592341A1 (en) | 2011-11-09 | 2013-05-15 | Fortum OYJ | Pulverized fuel burner |
CN112708471A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Efficient coal gasification reaction device and efficient coal gasification reaction method |
Also Published As
Publication number | Publication date |
---|---|
JP2008202836A (en) | 2008-09-04 |
WO2008102420A1 (en) | 2008-08-28 |
DE112007003317T5 (en) | 2010-01-14 |
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Owner name: IHI CORPORATION,JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FUJIMORI, TOSHIRO;WATANABE, SHINJI;YAMADA, TOSHIHIKO;REEL/FRAME:023042/0362 Effective date: 20090618 |
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