US20210215334A1 - Burner, gasification furnace provided with burner, and burner attaching method - Google Patents
Burner, gasification furnace provided with burner, and burner attaching method Download PDFInfo
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- US20210215334A1 US20210215334A1 US16/468,386 US201816468386A US2021215334A1 US 20210215334 A1 US20210215334 A1 US 20210215334A1 US 201816468386 A US201816468386 A US 201816468386A US 2021215334 A1 US2021215334 A1 US 2021215334A1
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- United States
- Prior art keywords
- supply pipe
- pipe
- furnace
- burner
- containing gas
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/02—Structural details of mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
- The present invention relates to a burner used for a combustion furnace, a gasifier provided with a burner, and a burner attaching method.
- A gasifier (combustion furnace) of a gasification apparatus which gasifies a carbon containing fuel deals with a high temperature exceeding 1,500° C. As a burner used for the gasifier, a burner in the related art disclosed in PTL 1 is known.
- In the related art disclosed in PTL 1, the burner is installed in a state where a tip thereof is located inside a furnace. A burner cooling water pipe is wound around a burner supply pipe. PTL 1 discloses the following configuration. The burner cooling water pipe is installed in a state where the burner cooling water pipe is in contact with a periphery of the burner supply pipe, and is disposed outward of the furnace from a tip of the burner supply pipe. In the burner cooling water pipe, cooling water circulates so as to cool the burner supply pipe.
- [PTL 1] Japanese Patent No. 5968247
- In the burner configured in this way, a protruding amount of the tip of the burner supply pipe protruding into the furnace is an important factor for determining a state where combustion inside the furnace is performed by the burner. Accordingly, the protruding amount needs to be accurately managed. In addition, in order to protect the burner supply pipe from combustion heat generated by flames formed inside the furnace, cooling water is caused to flow inside the burner cooling pipe. A positional relationship between the burner supply pipe and the burner cooling water pipe greatly influences cooling performance for the burner supply pipe. Furthermore, the vicinity of a furnace inner tip of the burner needs to ensure the cooling performance while the burner cooling pipe receives influence of wear caused by pulverized coal blown from the burner. Accordingly, when the burner supply pipe and the burner cooling water pipe are arranged, both of these need to be very accurately installed.
- According to the configuration disclosed in PTL 1, the burner supply pipe and the burner cooling water pipe are separated from each other. Accordingly, when the burner supply pipe and the burner cooling water pipe are attached to the combustion furnace, it is necessary to very accurately align the burner supply pipe and the burner cooling water pipe with each other in a job site, thereby causing a problem in that much time is required for an attaching step in the job site.
- The present invention is made in view of the above-described circumstances, and an object thereof is to provide a burner, a gasifier provided with a burner, and a burner attaching method, which can improve workability in installing an oxygen containing gas supply pipe and a cooling pipe of the burner for supplying a fuel and oxygen containing gas to a combustion furnace of the gasifier.
- In order to solve the above-described problem, a burner, a gasifier provided with a burner, and a burner attaching method according to the present invention adopt the following means.
- According to an aspect of the present invention, there is provided a burner including an oxygen containing gas supply pipe that supplies oxygen containing gas into a furnace, a fuel supply pipe that is coaxially located inside the oxygen containing gas supply pipe so as to supply a fuel and oxygen containing gas, a cooling pipe disposed so as to surround the oxygen containing gas supply pipe, and a flange to which the oxygen containing gas supply pipe and the cooling pipe are fixed, and which is detachably fixed to a furnace wall.
- According to the above-described configuration, the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange. Accordingly, the oxygen containing gas supply pipe and the cooling pipe can be installed in the gasifier simply by fixing the flange to the furnace wall. In addition, the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange. Accordingly, the oxygen containing gas supply pipe and the cooling pipe can be transported without any change in a state where both of these are arranged at a desired relative position. In this manner, a place where the oxygen containing gas supply pipe and the cooling pipe are arranged at the desired relative position and a place where the oxygen containing gas supply pipe and the cooling pipe are installed in the combustion furnace of the gasifier can be located separate from each other. Therefore, for example, in a case where the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange at the factory, at the job site where the oxygen containing gas supply pipe and the cooling pipe are installed in the combustion furnace of the gasifier, the oxygen containing gas supply pipe and the cooling pipe can be installed at the desired relative position in the gasifier simply by fixing the flange to the furnace wall. Therefore, it is possible to omit work for adjusting a relative position between the oxygen containing gas supply pipe and the cooling pipe at the job site. Therefore, it is possible to improve workability in installing the oxygen containing gas supply pipe and the cooling pipe in the gasifier.
- In addition, the flange is detachably fixed to the furnace wall. Accordingly, in a case where the oxygen containing gas supply pipe or the cooling pipe is exchanged, the flange can be easily detached from the furnace wall, and thus, both of these can be easily exchanged.
- In addition, in the burner according to the aspect of the present invention, a tip portion inside the furnace of the cooling pipe may be located inside the furnace as much as a predetermined length from a tip portion of the oxygen containing gas supply pipe inside the furnace.
- According to the above-described configuration, the tip portion of the cooling pipe is located inside the furnace as much as the predetermined length from the tip portion of the oxygen containing gas supply pipe. Even in a case of the burner requiring high accuracy in relative alignment between the oxygen containing gas supply pipe and the cooling pipe, the place where the oxygen containing gas supply pipe and the cooling pipe are arranged at the desired relative position and the place where the oxygen containing gas supply pipe and the cooling pipe are installed in the combustion furnace of the gasifier can be located separate from each other. Therefore, for example, in a case where the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange at the factory, the workability can be further improved at the job site where the oxygen containing gas supply pipe and the cooling pipe are installed in the combustion furnace of the gasifier.
- According to another aspect of the present invention, there is provided a gasifier including the burner. According to the gasifier configured in this way, it is possible to improve the workability in installing the oxygen containing gas supply pipe and the cooling pipe. In addition, the oxygen containing gas supply pipe or the cooling pipe can be easily exchanged.
- According to still another aspect of the present invention, there is provided a burner attaching method for a burner including an oxygen containing gas supply pipe that supplies oxygen containing gas into a furnace, an oxygen containing gas fuel supply pipe that is coaxially located inside the oxygen containing gas supply pipe so as to supply a fuel and oxygen containing gas, a cooling pipe disposed so as to surround the oxygen containing gas supply pipe, and a flange to which the oxygen containing gas supply pipe and the cooling pipe are fixed, and which is detachably fixed to a furnace wall. The burner attaching method includes a supply pipe fixing step of fixing the oxygen containing gas supply pipe to the flange, a cooling pipe fixing step of fixing the cooling pipe to the flange, and a flange fixing step of detachably fixing the flange to the furnace wall after the supply pipe fixing step and the cooling pipe fixing step. A position where the oxygen containing gas supply pipe and the cooling pipe protrude into the furnace is managed through the flange fixing step.
- According to the above-described configuration, the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange. Accordingly, the oxygen containing gas supply pipe and the cooling pipe can be installed in the combustion furnace of the gasifier simply by fixing the flange to the furnace wall. The flange is fixed to the furnace wall after the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange. Accordingly, the oxygen containing gas supply pipe and the cooling pipe can be transported without any change in a state where both of these are arranged at the desired relative position. Therefore, the place where the oxygen containing gas supply pipe and the cooling pipe are arranged at the desired relative position and the place where the oxygen containing gas supply pipe and the cooling pipe are installed in the gasifier do not need to be the same place, and can be located separate from each other. The place where the oxygen containing gas supply pipe and the cooling pipe are arranged at the desired relative position does not need to be located in the vicinity of the gasifier. Therefore, it is possible to improve the workability in installing the oxygen containing gas supply pipe and the cooling pipe in the gasifier.
- In addition, the flange is detachably fixed to the furnace wall. Accordingly, in a case where the oxygen containing gas supply pipe or the cooling pipe is exchanged, the flange can be easily detached from the furnace wall, and thus, both of these can be easily exchanged.
- In addition, the burner attaching method according to the aspect of the present invention may further include a transportation step of transporting the flange to which the oxygen containing gas supply pipe and the cooling pipe are fixed. The supply pipe fixing step and the cooling pipe fixing step may be performed at a factory. The flange fixing step may be performed at a job site where the oxygen containing gas supply pipe and the cooling pipe are installed in a combustion furnace having the furnace wall, after the transportation step.
- According to the above-described configuration, the oxygen containing gas supply pipe and the cooling pipe are fixed to the flange at the factory, and are transported without any change in a fixed state. Accordingly, at the job site where the oxygen containing gas supply pipe and the cooling pipe are installed in the combustion furnace of the gasifier, the oxygen containing gas supply pipe and the cooling pipe can be installed at the desired relative position in the gasifier simply by fixing the flange to the furnace wall. Therefore, it is possible to omit work for adjusting the relative position between the oxygen containing gas supply pipe and the coding pipe at the job site. Therefore, it is possible to preferably improve the workability in installing the oxygen containing gas supply pipe and the cooling pipe in the gasifier.
- According to the present invention, it is possible to improve the workability in installing the supply pipe and the cooling pipe of the burner, through which the fuel and the oxygen containing gas are supplied to the combustion furnace of the gasifier.
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FIG. 1 is a longitudinal sectional view of a burner according to an embodiment of the present invention. -
FIG. 2 is a side view of the burner inFIG. 1 . -
FIG. 3 is a schematic configuration diagram of a gasifier according to the embodiment of the present invention. - Hereinafter, an embodiment of a burner, a gasifier provided with a burner, and a burner attaching method according to the present invention will be described with reference to
FIGS. 1 to 3 . - The burner according to the present embodiment is disposed in a coal gasifier (gasifier) 30 illustrated in
FIG. 3 . - The
coal gasifier 30 is formed to extend in a vertical direction. Pulverized coal and oxygen are supplied to a lower side in the vertical direction, and raw syngas gasified through partial combustion circulates from the lower side to an upper side in the vertical direction. Thecoal gasifier 30 has apressure vessel 110 and a gasifier wall (furnace wall) 111 disposed inside thepressure vessel 110. Then, in thecoal gasifier 30, anannulus part 115 is formed in a space between thepressure vessel 110 and thegasifier wall 111. In addition, in an internal space of thegasifier wall 111, thecoal gasifier 30 has acombustor unit 116, adiffuser unit 117, and aredactor unit 118 in the space inside thegasifier wall 111 sequentially from the lower side in the vertical direction (that is, an upstream side in a circulating direction of the raw syngas). - The
pressure vessel 110 is formed in a cylindrical shape whose interior serves as a hollow space, and agas outlet 121 is formed in an upper end portion thereof. In contrast, aslag bath 122 is formed in a lower end portion (bottom portion) thereof. Thegasifier wall 111 is formed in a cylindrical shape whose interior serves as a hollow space, and a wall surface thereof is disposed so as to face the inner surface of thepressure vessel 110. According to the present embodiment, thepressure vessel 110 has a cylindrical shape, and thediffuser unit 117 of thegasifier wall 111 is also formed in a cylindrical shape. Thegasifier wall 111 is connected to the inner surface of thepressure vessel 110 by a support member (not illustrated). - In the
gasifier wall 111, the interior of thepressure vessel 110 is separated into aninternal space 154 and anexternal space 156. Although details will be described later, a cross-sectional shape of thegasifier wall 111 varies in thediffuser unit 117 between thecombustor unit 116 and thereductor unit 118. In thegasifier wall 111, an upper end portion thereof which is a vertically upper side is connected to thegas outlet 121 of thepressure vessel 110, and a lower end portion thereof which is a vertically lower side is disposed with a gap from a bottom portion of thepressure vessel 110. Then, water is stored in theslag bath 122 formed in the bottom portion of thepressure vessel 110. The lower end portion of thegasifier wall 111 is immersed in the stored water, thereby sealing the interior and exterior of thegasifier wall 111.Burners gasifier wall 111, and asyngas cooler 102 is located in theinternal space 154. A structure of thegasifier wall 111 will be described later. - The
annulus part 115 is a space formed inside thepressure vessel 110 and outside thegasifier wall 111, that is, theexternal space 156. Nitrogen serving as inert gas separated by an air separation unit 42 is supplied to theannulus part 115 through a nitrogen supply line (not illustrated). Therefore, theannulus part 115 is a space filled with the nitrogen. A furnace internal pressure equalizing pipe (not illustrated) for equalizing the pressure inside the gasifier 101 is disposed in the vicinity of the upper portion in the vertical direction of theannulus part 115. The furnace internal pressure equalizing pipe is disposed so as to allow the interior and the exterior of thegasifier wall 111 to communicate with each other. In this manner, the pressure is substantially equalized so that a pressure difference between the interior (thecombustor unit 116, thediffuser unit 117, and the reductor unit 118) and the exterior (the annulus part 115) of thegasifier wall 111 falls within predetermined pressure. - The
combustor unit 116 is a space for partially combusting the pulverized coal, char, and air. A combustion device including a plurality ofburners 126 is located on thegasifier wall 111 in thecombustor unit 116. High temperature combustion gas used in partially combusting the pulverized coal and the char in thecombustor unit 116 passes through thediffuser unit 117, and flows into thereductor unit 118. - The
reductor unit 118 is a space configured as follows. The space maintains a high temperature state required for gasification reaction, and the pulverized coal is supplied to the combustion gas from thecombustor unit 116 so as to partially combust the pulverized coal. The pulverized coal is resolved into volatile components (carbon monoxide, hydrogen, and lower hydrocarbon), and is gasified so to produce the raw syngas. Combustion equipment including a plurality ofburners 127 is located on thegasifier wall 111 in thereductor unit 118. - The
syngas cooler 102 is disposed inside thegasifier wall 111, and is disposed on the upper side of thereductor unit 118 in the vertical direction of theburner 127. Thesyngas cooler 102 is a heat exchanger, and has an evaporator (evaporator) 131, a superheater (superheater) 132, and a coal economizer (economizer) 134 in this order from the lower side (upstream side in the circulating direction of the raw syngas) in the vertical direction of thegasifier wall 111. Thesyngas coolers 102 cool the raw syngas by exchanging heat with the raw syngas through heat exchange with the raw syngas produced in thereductor unit 118. In addition, the evaporator (evaporator) 131, the superheater (super heater) 132, and the economizer (economizer) 134 are not limited to the illustrated number. - Here, an operation of the
gasifier 30 will be described. - In the
coal gasifier 30, the nitrogen and the pulverized coal are loaded into and ignited by theburner 127 of thereductor unit 118, and the pulverized coal, the char, and compressed air (oxygen) are loaded into and ignited by theburner 126 of thecombustor unit 116. Then, in thecombustor unit 116, high temperature combustion gas is generated due to combustion of the pulverized coal and the char. In thecombustor unit 116, molten slag is generated in the high temperature gas due to the combustion of the pulverized coal and the char. The molten slag adheres to thegasifier wall 111, and drops to a furnace bottom. Finally, the molten slag is discharged to the water stored in theslag bath 122. Then, the high temperature combustion gas generated in thecombustor unit 116 ascends to thereductor unit 118 through thediffuser unit 117. In thereductor unit 118, a high temperature state required for gasification reaction is maintained, and the pulverized coal is mixed with the high temperature combustion gas. The pulverized coal is partially combusted in a high temperature reducing atmosphere, and the gasification reaction is performed, thereby producing the raw syngas. The gasified raw syngas flows from the lower side to the upper side in the vertical direction. - Next, a structure around the burner 2 according to the present embodiment will be described in detail with reference to
FIGS. 1 and 2 . For example, the burner 2 according to the present embodiment is applied to theburner 126 or the burner 127 (refer toFIG. 3 ) disposed on thegasifier wall 111 in the combustion furnace such as thecombustor unit 116 and thereductor unit 118 of thecoal gasifier 30. - As illustrated in
FIG. 3 , thecoal gasifier 30 obtains the production gas (flammable gas) as follows. The pulverized coal and char (unreacted portion of coal and ash content) which are pulverized by a coal beater (not illustrated) are partially combusted using the oxygen containing gas. According to the present embodiment, the air is used as the oxygen containing gas. The combustion furnace 1 generates combustion heat by combusting the pulverized coal and char, and supplies a heat quantity required for the gasification reaction and a heat quantity required for melting slag in thereductor unit 118 located on the downstream side. - As described above, the plurality of burners 2 are disposed around the combustion furnace 1. One of the burners 2 is illustrated in
Figs. 1 and 2 . The burner 2 is inserted into anopening portion 3 formed on the gasifier wall 111 (refer toFIG. 3 ). Thegasifier wall 111 includes a plurality of furnace wall pipes 4 (one of the furnace wall pipes 4 is illustrated inFIG. 1 ) extending in parallel in the vertically upward-downward direction. The cooling water flows inside the furnace wall pipe 4. Theopening portion 3 formed on thegasifier wall 111 is formed in such a way that a portion of the furnace wall pipe 4 is laterally bent outward (rightward inFIG. 1 ) of the furnace (right side inFIG. 1 ). - The burner 2 includes a supply pipe 5 located from the outside of the furnace to the inside of the furnace, a
cooling pipe 6 wound around this supply pipe 5, and a blank flange (flange) 7 to which the supply pipe 5 and thecooling pipe 6 are fixed. - The supply pipe 5 has an air supply pipe 8 (oxygen containing gas supply pipe) which configures the outer diameter of the supply pipe 5, and an annular plate-shaped supply
pipe flange portion 10 extending from an outer peripheral surface of a furnace outer end portion of the air supply pipe 8 in a direction orthogonal to the outer peripheral surface. Afuel supply pipe 9 extending in the same direction as the air supply pipe 8 and having the common axial center in the longitudinal direction is installed inside the air supply pipe 8. A furnace inner tip of thefuel supply pipe 9 is located outside the furnace so as to move rearward of the inside of the furnace from the furnace inner tip of the air supply pipe 8. As the fuel inside thefuel supply pipe 9, the pulverized coal and the char circulate from a fuel gas supply line (not illustrated) together with primary air for transportation. In addition, the outer surface of thefuel supply pipe 9 and the inner surface of the air supply pipe 8 are arranged so as to be separated from each other. The air (secondary air) circulates in a space between the outer surface of thefuel supply pipe 9 and the inner surface of the air supply pipe 8. The supplypipe flange portion 10 has abolt insertion hole 11 for fixing a furnace outer pipe flange portion 13 (to be described later) and a bolt (not illustrated) to each other. A flame is formed inside the furnace by the fuel and the air which are supplied from the supply pipe 5. - The furnace outer end portion of the air supply pipe 8 is connected to the furnace
outer pipe 12 located outside the furnace. The outer diameter of the furnaceouter pipe 12 is slightly smaller than the inner diameter of the air supply pipe 8. The end portion of the furnaceouter pipe 12 is inserted into the air supply pipe 8 so that the air supply pipe 8 and the furnaceouter pipe 12 are connected to each other. The outer peripheral surface of the furnaceouter pipe 12 has an annular plate-shaped furnace outerpipe flange portion 13 extending in a direction orthogonal to the outer peripheral surface. A fixing location A1 between the furnaceouter pipe 12 and the furnace outerpipe flange portion 13 is fixed by means of welding. The furnace outerpipe flange portion 13 has abolt insertion hole 14 for fixing the supplypipe flange portion 10 and a bolt (not illustrated) to each other. - The
cooling pipe 6 has cooling water (cooling medium) circulating therein, and has a first cooling pipe 15 and asecond cooling pipe 16 located in a furnace outward direction from the first cooling pipe 15. The first cooling pipe 15 is located so as to spirally surround the supply pipe 5 in a state of being in contact with the outer peripheral surface of the supply pipe 5 (air supply pipe 8). The furnace inner tip portion of the first cooling pipe 15 is located so as to protrude inward of the furnace as much as a protrusion allowance length L1 (refer toFIG. 1 ) from the tip portion of the supply pipe 5. As will be described later, the burner 2 is attached to the fixingmember 22 fixed to aseal box 20 by ablank flange 7. Thereafter, thesecond cooling pipe 16 is continuously connected to an upstream end and a downstream end of the first cooling pipe 15 by means of welding. That is, the first cooling pipe 15 and thesecond cooling pipe 16 serve as a series ofcontinuous cooling pipes 6. From a viewpoint of resisting corrosion resistance and thermal fatigue caused by repeated thermal stress, thecooling pipe 6 is formed of a Ni-based alloy or a Ni-containing alloy (Inconel 625), for example. - As illustrated in
FIG. 2 , theblank flange 7 is an annular plate-shaped member, and has a supplypipe insertion hole 17 for inserting the supply pipe 5 into a substantially central portion. For example, theblank flange 7 is formed of stainless steel (SUS316L) in view of heat resistance and corrosion resistance. In addition, the outer peripheral side of the supplypipe insertion hole 17 has two cooling pipe insertion holes 18 for inserting thecooling pipe 6, which are formed on the upper and lower sides of the drawing paper surface. In addition, a plurality of (for example, 16 in the present embodiment) bolt insertion holes 19 are formed along the outer periphery on the outer peripheral side from the coolingpipe insertion hole 18. Thebolt insertion hole 19 is a hole for fixing the fixingmember 22 fixed to the seal box 20 (to be described later) and theblank flange 7 to each other. - The
seal box 20 is disposed outside the furnace so as to cover theopening portion 3 formed by the furnace wall pipe 4. For example, theseal box 20 is formed of stainless steel. Theseal box 20 is filled with arefractory material 21. For example, as therefractory material 21, alumina or silica is preferably used. Theseal box 20 and therefractory material 21 can maintain the pressure inside the pressurized furnace, and radiation or slag leaking outward of the furnace from a gap between the burner 2 and theopening portion 3 can be prevented from further leaking outward. - The furnace outer surface of the
seal box 20 has a fixingmember 22 connecting theseal box 20 and theblank flange 7 to each other. The fixingmember 22 has acylinder portion 23 welded and fixed to a fixing location A2 disposed on the furnace outer surface of theseal box 20 and extending in the furnace outward direction, and a fixingmember flange portion 24 extending to the furnace outer surface of theseal box 20 from the furnace outer end portion of thecylinder portion 23. The fixingmember flange portion 24 has abolt insertion hole 25 for fixing theblank flange 7. - Next, a fixing mode of the burner 2 according to the present embodiment will be described.
- In the burner 2, each portion is fixed, based on the
blank flange 7. A fixing location A3 between theblank flange 7 and the supply pipe 5 is welded and fixed. That is, in a state where the supply pipe 5 (air supply pipe 8) is inserted into the supplypipe insertion hole 17 formed in theblank flange 7, theblank flange 7 and the outer surface of the supply pipe 5 are welded and fixed to each other. A fixing location A4 between theblank flange 7 and thecooling pipe 6 is welded and fixed. That is, in a state where thecooling pipe 6 is inserted into the coolingpipe insertion hole 18 formed in theblank flange 7, theblank flange 7 and the outer surface of the cooling pipe 6 (first cooling pipe 15) are welded and fixed to each other. In this way, theblank flange 7, the supply pipe 5, and thecooling pipe 6 are welded and fixed to each other, thereby forming an integrated structure. That is, a furnace inner tip position of the supply pipe 5 and a furnace inner tip position of the cooling pipe 6 (first cooling pipe 15) are fixed to theblank flange 7. - The
blank flange 7 and the fixingmember 22 are detachably fixed to each other by using a bolt (not illustrated). Specifically, in a state where thebolt insertion hole 19 formed in theblank flange 7 and thebolt insertion hole 25 formed in the fixingmember flange portion 24 overlap each other, theblank flange 7 and the fixingmember 22 are fastened and fixed to each other by using the bolts (not illustrated) inserted into both the insertion holes 19 and 25. In addition, the supply pipe 5 and the furnaceouter pipe 12 are detachably fixed to each other by using a bolt (not illustrated). Specifically, in a state where thebolt insertion hole 11 formed in the supplypipe flange portion 10 and thebolt insertion hole 14 formed in the furnace outerpipe flange portion 13 overlap each other, theblank flange 7 and the fixingmember 22 are fastened and fixed to each other by using bolts (not illustrated) inserted into both the insertion holes 11 and 14. - The burner 2 according to the above-described configuration is used as follows.
- In the furnace inner tip portion of the supply pipe 5, the fuel and the primary air which are supplied from a source (not illustrated) are injected from the
fuel supply pipe 9, and the secondary air is injected from the air supply pipe 8. The fuel and the air which are injected from the furnace inner tip of the supply pipe 5 are loaded into a previously formed fuel region inside the furnace, thereby maintaining a desired combustion state. On the other hand, in order to protect the supply pipe 5 from combustion radiant heat generated by the flame formed inside the furnace, the cooling water flows inside the coolingpipe 6 so as to cool a furnace inner protruding portion of the supply pipe 5. The cooling water is supplied from a cooling water source (not illustrated), and circulates inside the coolingpipe 6. Thereafter, the cooling water flows outward. - Next, an attaching method for the burner 2 according to the present embodiment will be described.
- According to the present embodiment, a welding and fixing the supply pipe 5 (air supply pipe 8) and the
cooling pipe 6 to theblank flange 7 at the fixing locations A3 and A4 (supply pipe fixing step and cooling pipe fixing step) is performed at a factory. In detail, a step of aligning and fixing the supply pipe 5 and thecooling pipe 6 to theblank flange 7 so that the furnace inner tip portion of the first cooling pipe 15 protrudes inward of the furnace as much as a predetermined protrusion allowance length L1 (refer toFIG. 1 ) from the tip portion of the supply pipe 5 (air supply pipe 8) is performed at the factory. Thereafter, theblank flange 7 to which the supply pipe 5 and thecooling pipe 6 are fixed is transported to a job site having the combustion furnace 1 installed therein by using predetermined transport means (transportation step). At the job site, theblank flange 7 and the fixingmember 22 are fastened to each other by using a bolt, and further the supply pipe 5 and the furnaceouter pipe 12 are fastened to each other by using a bolt. In this manner, the supply pipe 5 and thecooling pipe 6 are install in the combustion furnace 1 (flange fixing step). - Thereafter, the
second cooling pipe 16 is welded, fixed, and connected to the upstream end and the downstream end of the first cooling pipe 15, and thecooling pipe 6 is continuously connected thereto. - In addition, inside the air supply pipe 8 in the supply pipe 5, the
fuel supply pipe 9 is installed so as to extend in the same direction as the air supply pipe 8 and use the longitudinal axis center in common. The furnace inner tip of thefuel supply pipe 9 is installed and fixed so as to be located at a position moved rearward from the inside of the furnace as much as a predetermined length from the furnace inner tip of the air supply pipe 8. In this case, the air supply pipe 8 is aligned with and fixed to theblank flange 7. Accordingly, thefuel supply pipe 9 and the air supply pipe 8 are more easily aligned and installed, compared to the method in the related art. - According to the present embodiment, the following operation effects are achieved.
- According to the present embodiment, the supply pipe 5 and the
cooling pipe 6 are fixed to theblank flange 7. Accordingly, the supply pipe 5 and thecooling pipe 6 can be installed in the combustion furnace 1 simply by attaching and fixing theblank flange 7 to the fixingmember 22 fixed to theseal box 20 of the gasifier wall 111 (refer toFIG. 3 ). In addition, the supply pipe 5 and thecooling pipe 6 are fixed to theblank flange 7. Accordingly, the supply pipe 5 and thecooling pipe 6 can be transported without any change in a state where the supply pipe 5 and thecooling pipe 6 are arranged at a desired relative position. In this manner, a place where the supply pipe 5 and thecooling pipe 6 are arranged and fixed at the desired relative position and a place where the supply pipe 5 and thecooling pipe 6 are installed in the combustion furnace 1 can be separated from each other. - According to the present embodiment, the furnace inner tip portion of the
cooling pipe 6 is located so as to protrude inward of the furnace as much as a predetermined protrusion allowance length L1 (refer toFIG. 1 ) from the tip portion of the supply pipe 5 (air supply pipe 8). In this manner, the supply pipe 5 is cooled. In this structure, a cooling effect of the supply pipe 5 can be improved by lengthening the protrusion allowance length L1. However, if the protrusion allowance length L1 is excessively lengthened, the fuel (pulverized coal or char) ejected from thefuel supply pipe 9 collides with a protruding portion of thecooling pipe 6, and powder grain wear occurs in the protruding portion, thereby causing a possibility that the protruding portion may be damaged. Therefore, fixing work needs to be carried out by accurately managing the attaching position so that the protrusion allowance length L1 of the protruding portion of thecooling pipe 6 enables the cooling effect to be achieved while the powder grain wear is prevented. - According to the present embodiment, the step of welding and fixing the supply pipe 5 (air supply pipe 8) and the
cooling pipe 6 to theblank flange 7 at the fixing locations A3 and A4 is performed at the factory. That is, a process of adjusting the protrusion allowance length L1 of the protruding portion of thecooling pipe 6 to a desired length, which needs high accuracy, is performed at the factory. Then, in a state where the desired protrusion allowance length L1 is maintained, both of these are transported to the job site where the combustion furnace 1 is disposed. Therefore, at the job site for installing the supply pipe 5 and thecooling pipe 6 in the combustion furnace 1, the supply pipe 5 and thecooling pipe 6 can be installed at the desired relative position in the combustion furnace 1 simply by fixing theblank flange 7 to the fixingmember 22. Therefore, the work for adjusting the protrusion allowance length L1 of the protruding portion of thecooling pipe 6 to the desired length can be omitted at the job site. Therefore, it is possible to improve workability in installing the supply pipe 5 and thecooling pipe 6 in the combustion furnace 1. - In addition, the
blank flange 7 is detachably fixed to thegasifier wall 111. Accordingly, in a case where the supply pipe 5 or thecooling pipe 6 is exchanged during maintenance work, the detachableblank flange 7 can easily be detached from thegasifier wall 111, and can be easily exchanged. - The present invention is not limited to the invention according to the above-described respective embodiments, and can be appropriately modified within the scope not departing from the gist of the present invention For example, according to the present embodiment, the furnace inner tip portion of the
cooling pipe 6 is located so as to protrude inward of the furnace as much as the protrusion allowance length L1 from the tip portion of the supply pipe 5. However, in view of the heat resistance and cooling effect of the supply pipe, the furnace inner tip portion of thecooling pipe 6 may not protrude inward of the furnace, and may be located in the vicinity of the tip portion of the supply pipe 5. - 1: combustion furnace
- 2: burner
- 5: supply pipe
- 6: cooling pipe
- 7: blank flange (flange)
- 8: air supply pipe (oxygen containing gas supply pipe)
- 9: fuel supply pipe
- 10: supply pipe the flange portion
- 12: furnace outer pipe
- 13: furnace outer pipe flange portion
- 15: first cooling pipe
- 16: second cooling pipe
- 20: seal box
- 22: fixing member
- 24: fixing member flange portion
- 30: coal gasifier (gasifier)
- L1: protrusion allowance length
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017026206A JP6847700B2 (en) | 2017-02-15 | 2017-02-15 | Gasifier with burner and burner and how to install the burner |
JP2017-026206 | 2017-02-15 | ||
PCT/JP2018/004312 WO2018150991A1 (en) | 2017-02-15 | 2018-02-08 | Burner, gasification furnace provided with burner, and burner attaching method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20210215334A1 true US20210215334A1 (en) | 2021-07-15 |
Family
ID=63170288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/468,386 Abandoned US20210215334A1 (en) | 2017-02-15 | 2018-02-08 | Burner, gasification furnace provided with burner, and burner attaching method |
Country Status (4)
Country | Link |
---|---|
US (1) | US20210215334A1 (en) |
JP (1) | JP6847700B2 (en) |
CN (1) | CN110121619A (en) |
WO (1) | WO2018150991A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4310394A1 (en) * | 2022-07-21 | 2024-01-24 | L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude | Burner arrangement for synthesis gas production |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7316163B2 (en) | 2019-09-13 | 2023-07-27 | 三菱重工業株式会社 | Cooling channel structure and burner |
Family Cites Families (14)
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US4743194A (en) * | 1987-03-13 | 1988-05-10 | Texaco Inc. | Cooling system for gasifier burner operating in a high pressure environment |
US5515794A (en) * | 1995-01-23 | 1996-05-14 | Texaco Inc. | Partial oxidation process burner with recessed tip and gas blasting |
JPH1151334A (en) * | 1997-07-29 | 1999-02-26 | Chikyu Kankyo Sangyo Gijutsu Kenkyu Kiko | Gas burner |
JP3715851B2 (en) * | 1999-11-09 | 2005-11-16 | 新日本製鐵株式会社 | Waste plastic blowing method and waste plastic combustion burner for arc furnace |
JP4526177B2 (en) * | 2000-11-01 | 2010-08-18 | 大陽日酸株式会社 | Glass melting furnace burner installation structure |
JP2003042415A (en) * | 2001-07-31 | 2003-02-13 | Asahi Techno Glass Corp | Burner cooler |
JP3627217B2 (en) * | 2002-01-18 | 2005-03-09 | ケービーエンテク株式会社 | Brown gas combustion burner |
US20090202955A1 (en) * | 2008-02-07 | 2009-08-13 | General Electric Company | Gasification feed injectors and methods of modifying the cast surfaces thereof |
US8663348B2 (en) * | 2010-08-11 | 2014-03-04 | General Electric Company | Apparatus for removing heat from injection devices and method of assembling same |
CN201628248U (en) * | 2010-08-18 | 2010-11-10 | 上海神明控制工程有限公司 | Split oil gun |
US9822969B2 (en) * | 2010-11-30 | 2017-11-21 | General Electric Company | Fuel injector having tip cooling |
CN103210255B (en) * | 2011-03-31 | 2015-07-15 | 三菱日立电力系统株式会社 | Burner, reaction furnace such as gasification furnace equipped with burner, and electric generating power plant equipped with reaction furnace |
US9574770B2 (en) * | 2012-04-17 | 2017-02-21 | Alter Nrg Corp. | Start-up torch |
JP5968247B2 (en) * | 2013-02-08 | 2016-08-10 | 三菱日立パワーシステムズ株式会社 | Burner, combustion furnace, burner assembly method, and burner repair method |
-
2017
- 2017-02-15 JP JP2017026206A patent/JP6847700B2/en active Active
-
2018
- 2018-02-08 WO PCT/JP2018/004312 patent/WO2018150991A1/en active Application Filing
- 2018-02-08 US US16/468,386 patent/US20210215334A1/en not_active Abandoned
- 2018-02-08 CN CN201880005248.3A patent/CN110121619A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4310394A1 (en) * | 2022-07-21 | 2024-01-24 | L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude | Burner arrangement for synthesis gas production |
Also Published As
Publication number | Publication date |
---|---|
JP2018132248A (en) | 2018-08-23 |
CN110121619A (en) | 2019-08-13 |
WO2018150991A1 (en) | 2018-08-23 |
JP6847700B2 (en) | 2021-03-24 |
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