WO2018150991A1 - Burner, gasification furnace provided with burner, and burner attaching method - Google Patents

Burner, gasification furnace provided with burner, and burner attaching method Download PDF

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Publication number
WO2018150991A1
WO2018150991A1 PCT/JP2018/004312 JP2018004312W WO2018150991A1 WO 2018150991 A1 WO2018150991 A1 WO 2018150991A1 JP 2018004312 W JP2018004312 W JP 2018004312W WO 2018150991 A1 WO2018150991 A1 WO 2018150991A1
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WO
WIPO (PCT)
Prior art keywords
supply pipe
furnace
pipe
burner
cooling pipe
Prior art date
Application number
PCT/JP2018/004312
Other languages
French (fr)
Japanese (ja)
Inventor
北田　昌司
慎也 ▲濱▼▲崎▼
啓介 松尾
小山　智規
亀山　達也
Original Assignee
三菱日立パワーシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱日立パワーシステムズ株式会社 filed Critical 三菱日立パワーシステムズ株式会社
Priority to CN201880005248.3A priority Critical patent/CN110121619A/en
Priority to US16/468,386 priority patent/US20210215334A1/en
Publication of WO2018150991A1 publication Critical patent/WO2018150991A1/en

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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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling
    • 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

Definitions

  • the present invention relates to a burner used in a combustion furnace, a gasification furnace equipped with the burner, and a method for attaching the burner.
  • a gasification furnace (combustion furnace) of a gasification apparatus for gasifying a carbon-containing fuel has a high temperature exceeding 1500 ° C., and a burner used in this gasification furnace is described in the prior art of Patent Document 1. It has been.
  • the tip is installed in a state where the tip is located in the furnace.
  • a burner cooling water pipe is wound around the burner supply pipe. This burner cooling water pipe is installed in a state in contact with the periphery of the burner supply pipe, and a configuration is disclosed in which the burner cooling water pipe is provided from the tip of the burner supply pipe to the outside of the furnace. In this burner cooling water pipe, the cooling water circulates inside to cool the burner supply pipe.
  • the amount of protrusion of the burner supply pipe tip into the furnace is an important factor that determines the combustion state in the furnace by the burner, so it is necessary to be managed with high accuracy.
  • cooling water is flowed into the burner cooling pipe.
  • the positional relationship between the burner supply pipe and the burner cooling water pipe greatly affects the cooling performance of the burner supply pipe.
  • the burner cooling pipe is highly accurate in the arrangement of the burner supply pipe and the burner cooling water pipe in order to ensure cooling performance while being affected by wear caused by pulverized coal ejected from the burner. Installation is required.
  • the present invention has been made in view of such circumstances, and has improved workability when installing an oxidizing agent supply pipe and a cooling pipe of a burner for supplying fuel and an oxidizing agent to a combustion furnace of a gasification furnace.
  • An object of the present invention is to provide a burner that can be improved, a gasification furnace equipped with the burner, and a method of attaching the burner.
  • a burner according to an aspect of the present invention includes an oxidant supply pipe that supplies an oxidant into a furnace, a fuel supply pipe that is disposed on a coaxial line in the oxidant supply pipe, and that supplies fuel and an oxidant, and the oxidation
  • a cooling pipe provided so as to surround the agent supply pipe, and a flange fixed to the furnace wall in a detachable manner while the oxidant supply pipe and the cooling pipe are fixed.
  • the oxidant supply pipe and the cooling pipe can be installed in the gasification furnace only by fixing the flange to the furnace wall.
  • the oxidant supply pipe and the cooling pipe are fixed to the flange, the oxidant supply pipe and the cooling pipe can be transported while being arranged at desired relative positions. Thereby, the place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position and the place where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace, etc., can be separated. it can.
  • the flange is fixed to the furnace wall at the site where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace.
  • the oxidant supply pipe and the cooling pipe can be installed in the gasification furnace at a desired relative position. Therefore, the work of adjusting the relative position between the oxidant supply pipe and the cooling pipe in the field can be omitted. Therefore, workability when installing the oxidant supply pipe and the cooling pipe in the gasification furnace can be improved.
  • the flange is detachably fixed to the furnace wall, when the oxidant supply pipe or the cooling pipe is replaced, the flange can be easily removed from the furnace wall and can be easily replaced. .
  • the front end portion of the cooling pipe inside the furnace is positioned at a predetermined length inside the furnace than the front end portion of the oxidizing agent supply pipe inside the furnace. May be.
  • the tip of the cooling pipe is positioned inside the furnace by a predetermined length from the tip of the oxidant supply pipe.
  • a place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position, and the oxidant The place where the supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace can be set as separate places. Therefore, for example, when the oxidant supply pipe and the cooling pipe are fixed to the flange in the factory, the workability is further improved at the site where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace. Can do.
  • a gasification furnace includes the above burner.
  • workability when installing the oxidant supply pipe and the cooling pipe can be improved. Further, the oxidant supply pipe and the cooling pipe can be easily replaced.
  • a burner mounting method includes an oxidant supply pipe that supplies an oxidant into a furnace, and an oxidant fuel supply that is disposed on a coaxial line in the oxidant supply pipe and supplies fuel and an oxidant.
  • a burner mounting method comprising: a supply pipe fixing step of fixing the oxidant supply pipe to the flange; a cooling pipe fixing step of fixing the cooling pipe to the flange; the supply pipe fixing step; A flange fixing step for fixing the flange to the furnace wall in a detachable manner after the cooling pipe fixing step, and the oxidant supply pipe and the cooling pipe in the furnace by the flange fixing step.
  • the protruding position To management.
  • the oxidant supply pipe and the cooling pipe can be installed in the combustion furnace of the gasification furnace, etc., simply by fixing the flange to the furnace wall. .
  • the flange is fixed to the furnace wall after the oxidant supply pipe and the cooling pipe are fixed to the flange, the oxidant supply pipe and the cooling pipe are transported in a state where they are arranged at desired relative positions. Can do. Therefore, the place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position and the place where the oxidant supply pipe and the cooling pipe are installed in the gasification furnace do not need to be the same place, and are different places.
  • the place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position does not need to be near the gasification furnace. Therefore, the workability
  • the flange is detachably fixed to the furnace wall, when replacing the oxidant supply pipe and the cooling pipe, the flange can be easily detached from the furnace wall and can be easily replaced. .
  • the burner mounting method includes a transporting process for transporting the flange to which the oxidant supply pipe and the cooling pipe are fixed, and the supply pipe fixing process and the cooling pipe fixing process. May be performed at a factory, and the flange fixing step may be performed at a site where the oxidizing agent supply pipe and the cooling pipe are installed in a combustion furnace having the furnace wall after the transporting process.
  • the oxidizer supply pipe and the cooling pipe are fixed to the flange in the factory and are transported in a fixed state. Therefore, the site where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace. Then, the oxidant supply pipe and the cooling pipe can be installed in the gasification furnace at a desired relative position by simply fixing the flange to the furnace wall. Therefore, the work of adjusting the relative position of the oxidant supply pipe and the cooling pipe on site can be omitted, and the workability when installing the oxidant supply pipe and the cooling pipe in the gasification furnace is preferably improved. Can do.
  • FIG. 1 An embodiment of a burner according to the present invention, a gasification furnace including the burner, and a burner mounting method will be described with reference to FIGS. 1 to 3.
  • the burner according to the present embodiment is provided in the coal gasification furnace (gasification furnace) 30 shown in FIG.
  • the coal gasification furnace 30 is formed to extend in the vertical direction, and pulverized coal and oxygen are supplied to the lower side in the vertical direction, and the product gas gasified by partial combustion from the lower side in the vertical direction to the upper side. It is in circulation.
  • the coal gasification furnace 30 includes a pressure vessel 110 and a gasification furnace wall (furnace wall) 111 provided inside the pressure vessel 110.
  • the coal gasification furnace 30 forms an annulus portion 115 in the space between the pressure vessel 110 and the gasification furnace wall 111.
  • the coal gasification furnace 30 includes a combustor section 116, a diffuser section 117, and a reductor section in the space inside the gasification furnace wall 111 in order from the lower side in the vertical direction (that is, the upstream side in the flow direction of the product gas). 118 is formed.
  • the pressure vessel 110 is formed in a cylindrical shape having a hollow space inside, a gas discharge port 121 is formed at the upper end portion, and a slag hopper 122 is formed at the lower end portion (bottom portion).
  • the gasification furnace wall 111 is formed in a cylindrical shape whose inside is a hollow space, and the wall surface thereof is provided to face the inner surface of the pressure vessel 110.
  • the pressure vessel 110 has a cylindrical shape, and the diffuser portion 117 of the gasification furnace wall 111 is also formed in a cylindrical shape.
  • the gasification furnace wall 111 is connected to the inner surface of the pressure vessel 110 by a support member (not shown).
  • the gasification furnace wall 111 separates the inside of the pressure vessel 110 into an internal space 154 and an external space 156.
  • the gasification furnace wall 111 has a cross-sectional shape that changes in a diffuser portion 117 between the combustor portion 116 and the reductor portion 118.
  • the upper end portion of the gasification furnace wall 111 on the vertically upper side is connected to the gas discharge port 121 of the pressure vessel 110, and the lower end portion on the vertically lower side is provided with a gap from the bottom portion of the pressure vessel 110. ing.
  • the slag hopper 122 formed at the bottom of the pressure vessel 110 stores stored water, and the lower end of the gasification furnace wall 111 is immersed in the stored water, thereby sealing the inside and outside of the gasification furnace wall 111. It has stopped. Burners 126 and 127 are inserted into the gasification furnace wall 111, and the syngas cooler 102 is disposed in the internal space 154. The structure of the gasification furnace wall 111 will be described later.
  • the annulus 115 is a space formed inside the pressure vessel 110 and outside the gasification furnace wall 111, that is, an external space 156. Nitrogen, which is an inert gas separated by the air separation equipment 42, is not shown in the figure. Supplied through the supply line. For this reason, the annulus portion 115 becomes a space filled with nitrogen.
  • An in-furnace pressure equalizing tube (not shown) for equalizing the pressure in the gasification furnace 101 is provided in the vicinity of the upper portion of the annulus portion 115 in the vertical direction.
  • the pressure equalizing pipe in the furnace is provided so as to communicate between the inside and outside of the gasification furnace wall 111, and the pressure between the inside (combustor part 116, diffuser part 117 and reductor part 118) and outside (annulus part 115) of the gasification furnace wall 111.
  • the pressure is almost equalized so that the difference is within a predetermined pressure.
  • the combustor unit 116 is a space for partially burning pulverized coal, char, and air, and a combustion apparatus including a plurality of burners 126 is disposed on the gasification furnace wall 111 in the combustor unit 116.
  • the high-temperature combustion gas obtained by burning part of the pulverized coal and char in the combustor unit 116 passes through the diffuser unit 117 and flows into the reductor unit 118.
  • the reductor unit 118 is maintained at a high temperature necessary for the gasification reaction, and supplies the pulverized coal to the combustion gas from the combustor unit 116 to partially burn the pulverized coal (for example, carbon monoxide, hydrogen, lower hydrocarbons, etc.).
  • a gasification furnace wall 111 in the reductor unit 118 is provided with a combustion device composed of a plurality of burners 127.
  • the syngas cooler 102 is provided inside the gasification furnace wall 111 and is provided above the burner 127 of the reductor unit 118 in the vertical direction.
  • the syngas cooler 102 is a heat exchanger, and in order from the lower side in the vertical direction of the gasification furnace wall 111 (upstream side in the flow direction of the product gas), an evaporator 131, a superheater (superheater) 132, A charcoal unit (economizer) 134 is arranged.
  • These syngas coolers 102 cool the generated gas by exchanging heat with the generated gas generated in the reductor unit 118. Further, the quantity of the evaporator (evaporator) 131, the superheater (superheater) 132, and the economizer 134 is not limited.
  • molten slag is generated in the high-temperature gas by the combustion of pulverized coal and char, and this molten slag adheres to the gasification furnace wall 111 and falls to the furnace bottom, and finally in the slag hopper 122. Discharged into the water storage. Then, the high-temperature combustion gas generated in the combustor unit 116 rises to the reductor unit 118 through the diffuser unit 117. In this reductor unit 118, the high temperature state necessary for the gasification reaction is maintained, the pulverized coal is mixed with the high temperature combustion gas, the pulverized coal is partially burned in a high temperature reducing atmosphere, and the gasification reaction is performed. Is generated. The gasified product gas flows from the lower side to the upper side in the vertical direction.
  • the burner 2 according to the present embodiment is applied to, for example, the burner 126 and the burner 127 (see FIG. 3) provided on the gasification furnace wall 111 in the combustion furnace such as the combustor part 116 and the reductor part 118 of the coal gasification furnace 30. Is done.
  • the coal gasification furnace 30 partially burns pulverized coal and char (unreacted coal and ash content of coal) by an oxidizer, which is pulverized by a coal pulverizer (not shown), and generates a gas (combustible). Gas).
  • an oxidizer which is pulverized by a coal pulverizer (not shown), and generates a gas (combustible). Gas).
  • air is used as the oxidizing agent.
  • the combustion furnace 1 generates combustion heat by burning pulverized coal and char, and supplies a heat amount necessary for a gasification reaction in the reductor unit 118 located on the downstream side and a heat amount for melting the slag. .
  • a plurality of burners 2 are provided around the combustion furnace 1, and one of the burners 2 is shown in FIGS. 1 and 2.
  • the burner 2 is inserted through an opening 3 formed in the gasification furnace wall 111 (see FIG. 3).
  • the gasification furnace wall 111 includes a plurality of furnace wall tubes 4 (one of which is shown in FIG. 1) extending in the vertical vertical direction and provided in parallel. Cooling water flows in the furnace wall tube 4.
  • the opening 3 formed in the gasification furnace wall 111 is formed by bending a part of the furnace wall tube 4 to the outside (right side in FIG. 1) and to the side.
  • the burner 2 includes a supply pipe 5 arranged from outside the furnace to the inside of the furnace, a cooling pipe 6 wound around the supply pipe 5, and a closed flange (flange) to which the supply pipe 5 and the cooling pipe 6 are fixed. 7).
  • the supply pipe 5 includes an air supply pipe (oxidant supply pipe) 8 constituting the outer diameter of the supply pipe 5 and an annular ring extending from the outer peripheral surface of the furnace outer end of the air supply pipe 8 in a direction orthogonal to the outer peripheral surface. And a plate-like supply pipe flange portion 10.
  • a fuel supply pipe 9 extending in the same direction as the air supply pipe 8 and having a common axial center in the longitudinal direction is installed inside the air supply pipe 8.
  • the tip inside the furnace of the fuel supply pipe 9 is located outside the furnace so as to recede from the inside of the furnace with respect to the tip inside the furnace of the air supply pipe 8, and pulverized coal or char is carried as fuel in the fuel supply pipe 9.
  • the supply pipe flange portion 10 is formed with a bolt insertion hole 11 for fixing with an outer tube flange portion 13 (described later) and a bolt (not shown). A flame is formed in the furnace by the fuel and air supplied from the supply pipe 5.
  • the end of the air supply pipe 8 on the outside of the furnace is connected to a furnace pipe 12 arranged outside the furnace.
  • the outer diameter of the outer tube 12 is slightly smaller than the inner diameter of the air supply tube 8, and the end of the outer tube 12 is inserted into the air supply tube 8, so that the air supply tube 8 and the outer tube are inserted. 12 is connected.
  • the fixing point A1 between the furnace tube 12 and the furnace tube flange portion 13 is fixed by welding.
  • the outer tube flange portion 13 is formed with a bolt insertion hole 14 for fixing with the supply tube flange portion 10 and a bolt (not shown).
  • the cooling pipe 6 has cooling water (cooling medium) flowing therein, and has a first cooling pipe 15 and a second cooling pipe 16 positioned in the furnace outer direction than the first cooling pipe 15.
  • the 1st cooling pipe 15 is arrange
  • the front end portion of the first cooling pipe 15 inside the furnace is disposed so as to protrude from the front end portion of the supply pipe 5 to the inside of the furnace by the allowance length L1 (see FIG. 1).
  • the second cooling pipe 16 is welded to the upstream end and the downstream end of the first cooling pipe 15. Are connected continuously. That is, the first cooling pipe 15 and the second cooling pipe 16 are a series of continuous cooling pipes 6.
  • the cooling pipe 6 is made of, for example, a Ni-based alloy or a Ni-containing alloy (such as Inconel 625) from the viewpoint of withstanding corrosion resistance and thermal fatigue due to repeated thermal stress.
  • the closing flange 7 is an annular plate-like member, and a supply pipe insertion hole 17 for inserting the supply pipe 5 is formed in a substantially central portion.
  • the closing flange 7 is made of, for example, stainless steel (SUS316L or the like) due to heat resistance and corrosion resistance.
  • two cooling pipe insertion holes 18 for inserting the cooling pipe 6 are formed, for example, on the upper and lower sides of the paper surface.
  • a plurality (for example, 16 in this embodiment) of bolt insertion holes 19 are formed on the outer peripheral side of the cooling pipe insertion hole 18 so as to extend along the outer periphery.
  • the bolt insertion hole 19 is a hole for fixing the fixing member 22 fixed to the seal box 20 described later and the closing flange 7.
  • a seal box 20 is provided outside the furnace so as to cover the opening 3 formed by the furnace wall tube 4.
  • the seal box 20 is made of, for example, stainless steel.
  • the seal box 20 is filled with a refractory material 21.
  • As the refractory material 21, for example, alumina or silica is preferably used.
  • the sealed box 20 and the refractory material 21 maintain the pressurized pressure in the furnace, and radiation and slag leaking out of the furnace through the gap between the burner 2 and the opening 3 can further leak to the outside. Can be prevented.
  • a fixing member 22 for connecting the seal box 20 and the closing flange 7 is provided on the outer surface of the seal box 20.
  • the fixing member 22 is welded and fixed to a fixing location A2 provided on the outer surface of the furnace of the seal box 20 and extends in the furnace outer direction, and the outer side of the furnace of the seal box 20 from the outer end of the cylindrical part 23.
  • a fixing member flange portion 24 extending on the surface.
  • the fixing member flange portion 24 is formed with a bolt insertion hole 25 for fixing to the closing flange 7.
  • a fixing portion A3 between the closing flange 7 and the supply pipe 5 is fixed by welding. That is, with the supply pipe 5 (air supply pipe 8) inserted through the supply pipe insertion hole 17 formed in the closing flange 7, the closing flange 7 and the outer surface of the supply pipe 5 are fixed by welding.
  • a fixing point A4 between the closing flange 7 and the cooling pipe 6 is fixed by welding. That is, in the state where the cooling pipe 6 is inserted into the cooling pipe insertion hole 18 formed in the closing flange 7, the closing flange 7 and the outer surface of the cooling pipe 6 (first cooling pipe 15) are fixed by welding.
  • the closing flange 7, the supply pipe 5, and the cooling pipe 6 are fixed by welding and have an integral structure. That is, with respect to the closing flange 7, the furnace inner tip position of the supply pipe 5 and the furnace inner tip position of the cooling pipe 6 (first cooling pipe 15) are fixed.
  • the closing flange 7 and the fixing member 22 are detachably fixed by bolts (not shown). Specifically, a bolt (not shown) is inserted through both insertion holes 19 and 25 in a state where the bolt insertion hole 19 formed in the closing flange 7 and the bolt insertion hole 25 formed in the fixing member flange portion 24 overlap each other. It is fixed by fastening.
  • the supply pipe 5 and the furnace outer pipe 12 are detachably fixed by bolts (not shown). Specifically, both the insertion holes 11 and 14 are inserted in a state where the bolt insertion holes 11 formed in the supply pipe flange portion 10 and the bolt insertion holes 14 formed in the outer tube flange portion 13 overlap. It is fastened and fixed by bolts (not shown).
  • the burner 2 configured as described above is used as follows. At the front end inside the furnace of the supply pipe 5, fuel and primary air supplied from a supply source (not shown) are ejected from the fuel supply pipe 9, and secondary air is ejected from the air supply pipe 8. The fuel and air ejected from the front end of the supply pipe 5 inside the furnace are introduced into the fuel region already formed in the furnace, and a desired combustion state is maintained. On the other hand, in order to protect the supply pipe 5 from the combustion radiant heat generated by the flame formed in the furnace, cooling water is flowed into the cooling pipe 6 to cool the furnace inner protrusion of the supply pipe 5. The cooling water is supplied from a cooling water source (not shown), flows through the cooling pipe 6 and then flows out to the outside.
  • a cooling water source not shown
  • the attachment method of the burner 2 in this embodiment is demonstrated.
  • the process (supply pipe fixing process and cooling pipe fixing process) of fixing the fixing locations A3 and A4 by welding the supply pipe 5 (air supply pipe 8) and the cooling pipe 6 to the closing flange 7 is performed at the factory.
  • the front end portion of the first cooling pipe 15 inside the furnace protrudes from the front end portion of the supply pipe 5 (air supply pipe 8) to the inside of the furnace with a predetermined allowance length L1 (see FIG. 1).
  • a process of managing the position of the supply pipe 5 and the cooling pipe 6 to the closing flange 7 and fixing them is performed at the factory.
  • the closing flange 7 to which the supply pipe 5 and the cooling pipe 6 are fixed is transported to a site where the combustion furnace 1 is installed by a predetermined transport means (transport process).
  • the supply pipe 5 and the cooling pipe 6 are installed in the combustion furnace 1 by bolting the closing flange 7 and the fixing member 22 and further bolting the supply pipe 5 and the furnace outer pipe 12 (flange). Fixing process).
  • the second cooling pipe 16 is welded and connected to the upstream end and the downstream end of the first cooling pipe 15 so that the cooling pipe 6 is continuously connected.
  • a fuel supply pipe 9 is installed inside the air supply pipe 8 so as to extend in the same direction as the air supply pipe 8 and share the longitudinal axial center.
  • the tip inside the furnace of the fuel supply pipe 9 is installed and fixed so as to be in a position retracting from the inside of the furnace by a predetermined length than the tip inside the furnace of the air supply pipe 8. At this time, since the air supply pipe 8 is fixed to the closing flange 7 while managing the position, the alignment and installation of the fuel supply pipe 9 with the air supply pipe 8 can be performed more easily than in the past. It becomes possible.
  • the closing flange 7 is fixed to the fixing member 22 fixed to the seal box 20 of the gasification furnace wall 111 (see FIG. 3).
  • the supply pipe 5 and the cooling pipe 6 can be installed in the combustion furnace 1 simply by being attached and fixed. Further, since the supply pipe 5 and the cooling pipe 6 are fixed to the closing flange 7, the supply pipe 5 and the cooling pipe 6 can be transported while being arranged at desired relative positions. Thereby, the place which arrange
  • the front end portion of the cooling pipe 6 inside the furnace protrudes from the front end portion of the supply pipe 5 (air supply pipe 8) to the inside of the furnace by a predetermined allowance length L1 (see FIG. 1). It cools with respect to the supply pipe
  • the cooling effect of the supply pipe 5 can be improved by increasing the allowance length L1, but if it is made too long, the fuel (pulverized coal or Char) may collide with the projecting portion of the cooling pipe 6, causing particle wear at the projecting portion and possibly damaging the projecting portion. Therefore, the protrusion allowance length L1 of the protruding portion of the cooling pipe 6 needs to be fixed with high accuracy of the mounting position so that a cooling effect can be obtained while preventing powder wear.
  • the process of welding and fixing the fixing points A3 and A4 to the closing flange 7 with the supply pipe 5 (air supply pipe 8) and the cooling pipe 6 is performed at the factory. That is, the process of adjusting the protruding length L1 of the protruding portion of the cooling pipe 6 that requires high accuracy to a desired length is performed at the factory. And it is conveyed to the site
  • the closing flange 7 is detachably fixed to the gasification furnace wall 111, when the supply pipe 5 or the cooling pipe 6 is replaced for maintenance or the like, the detachable closing flange 7 is used as the gasification furnace. It can be easily removed from the wall 111 and can be easily replaced.
  • the present invention is not limited to the invention according to each of the above embodiments, and can be appropriately modified without departing from the scope of the invention.
  • the front end portion of the cooling pipe 6 on the furnace inner side is arranged so as to protrude from the front end part of the supply pipe 5 to the inner side of the furnace by the allowance length L1.
  • the tip of the cooling pipe 6 inside the furnace may be arranged in the vicinity of the tip of the supply pipe 5 without protruding inside the furnace.

Abstract

The purpose of the present invention is to improve workability when installing a cooling pipe and a burner oxidizer supply pipe through which fuel and an oxidizer are supplied to a combustion furnace or the like of a gasification furnace. A burner (2) is provided with: an air supply pipe (8) through which air is supplied into a combustion furnace (1); a cooling pipe (6) that is provided so as to surround a supply pipe (5); and a closed flange (7) which is detachably fixed to a furnace wall and to which the air supply pipe (8) and the cooling pipe (6) are fixed. The tip of the cooling pipe (6) on a furnace inside is arranged to project to the furnace inside more than the tip of the supply pipe (5) by a projection allowance length (L1).

Description

バーナ及びバーナを備えたガス化炉並びにバーナの取付方法Burner, gasifier equipped with burner, and method of attaching burner
　本発明は、燃焼炉に用いられるバーナ及びバーナを備えたガス化炉並びにバーナの取付方法に関するものである。 The present invention relates to a burner used in a combustion furnace, a gasification furnace equipped with the burner, and a method for attaching the burner.
　炭素含有燃料をガス化するガス化装置のガス化炉（燃焼炉）は１５００℃を超える高温であり、このガス化炉に用いられるバーナとして、特許文献１の従来技術に記載されたものが知られている。
　特許文献１の従来技術には、その先端が炉内に位置する状態で設置されている。バーナ供給管の周囲には、バーナ冷却水管が巻回されている。このバーナ冷却水管は、バーナ供給管の周囲に接した状態で設置され、バーナ供給管の先端から炉外側まで設けられている構成が開示されている。このバーナ冷却水管は、内部に冷却水が流通し、バーナ供給管を冷却している。 A gasification furnace (combustion furnace) of a gasification apparatus for gasifying a carbon-containing fuel has a high temperature exceeding 1500 ° C., and a burner used in this gasification furnace is described in the prior art of Patent Document 1. It has been.
In the prior art of Patent Document 1, the tip is installed in a state where the tip is located in the furnace. A burner cooling water pipe is wound around the burner supply pipe. This burner cooling water pipe is installed in a state in contact with the periphery of the burner supply pipe, and a configuration is disclosed in which the burner cooling water pipe is provided from the tip of the burner supply pipe to the outside of the furnace. In this burner cooling water pipe, the cooling water circulates inside to cool the burner supply pipe.
特許第５９６８２４７号公報Japanese Patent No. 5968247
　このようなバーナにおいて、バーナ供給管の先端の炉内への突出量は、バーナによる炉内の燃焼状態を決定する重要な因子となるため精度良く管理される必要がある。また炉内に形成された火炎による燃焼熱からバーナ供給管を保護するため、バーナ冷却管内に冷却水が流される。バーナ供給管及びバーナ冷却水管の位置関係は、バーナ供給管に対する冷却性能等に大きく影響を及ぼす。さらに、バーナの炉内側先端付近では、バーナ冷却管はバーナから噴出する微粉炭などによる摩耗の影響を受けながら冷却性能を確保するために、バーナ供給管及びバーナ冷却水管の配置には、高い精度の設置が必要とされる。 In such a burner, the amount of protrusion of the burner supply pipe tip into the furnace is an important factor that determines the combustion state in the furnace by the burner, so it is necessary to be managed with high accuracy. Further, in order to protect the burner supply pipe from the combustion heat generated by the flame formed in the furnace, cooling water is flowed into the burner cooling pipe. The positional relationship between the burner supply pipe and the burner cooling water pipe greatly affects the cooling performance of the burner supply pipe. Furthermore, in the vicinity of the furnace inner tip of the burner, the burner cooling pipe is highly accurate in the arrangement of the burner supply pipe and the burner cooling water pipe in order to ensure cooling performance while being affected by wear caused by pulverized coal ejected from the burner. Installation is required.
　特許文献１の構成では、バーナ供給管とバーナ冷却水管とが別体とされているので、バーナ供給管及びバーナ冷却水管を燃焼炉に取付ける際に、現場でバーナ供給管とバーナ冷却水管との高い精度の位置合わせを行う必要があり、現場での取付工程に多くの時間を要するという問題があった。 In the configuration of Patent Document 1, the burner supply pipe and the burner cooling water pipe are separated from each other. Therefore, when the burner supply pipe and the burner cooling water pipe are attached to the combustion furnace, the burner supply pipe and the burner cooling water pipe are connected on the spot. There is a problem that it is necessary to perform high-accuracy alignment, and a lot of time is required for the on-site mounting process.
　本発明は、このような事情に鑑みてなされたものであって、ガス化炉の燃焼炉などに燃料及び酸化剤を供給するバーナの酸化剤供給管及び冷却管を設置する際の作業性を向上させることができるバーナ及びバーナを備えたガス化炉並びにバーナの取付方法を提供することを目的とする。 The present invention has been made in view of such circumstances, and has improved workability when installing an oxidizing agent supply pipe and a cooling pipe of a burner for supplying fuel and an oxidizing agent to a combustion furnace of a gasification furnace. An object of the present invention is to provide a burner that can be improved, a gasification furnace equipped with the burner, and a method of attaching the burner.
　上記課題を解決するために、本発明のバーナ及びバーナを備えたガス化炉並びにバーナの取付方法は、以下の手段を採用する。
　本発明の一態様に係るバーナは、炉内に酸化剤を供給する酸化剤供給管と、前記酸化剤供給管内の同軸線上に配置され、燃料及び酸化剤を供給する燃料供給管と、前記酸化剤供給管を取り囲むように設けられた冷却管と、前記酸化剤供給管と前記冷却管とが固定されるとともに、炉壁に対して着脱可能に固定されるフランジと、を備えている。 In order to solve the above problems, the burner, the gasification furnace equipped with the burner, and the method of attaching the burner employ the following means.
A burner according to an aspect of the present invention includes an oxidant supply pipe that supplies an oxidant into a furnace, a fuel supply pipe that is disposed on a coaxial line in the oxidant supply pipe, and that supplies fuel and an oxidant, and the oxidation A cooling pipe provided so as to surround the agent supply pipe, and a flange fixed to the furnace wall in a detachable manner while the oxidant supply pipe and the cooling pipe are fixed.
　上記構成では、酸化剤供給管及び冷却管がフランジに固定されているので、フランジを炉壁に固定するだけで酸化剤供給管及び冷却管をガス化炉に設置することができる。また、酸化剤供給管及び冷却管は、フランジに固定されているので、酸化剤供給管と冷却管とを所望の相対位置に配置した状態のまま運搬することができる。これにより、酸化剤供給管と冷却管とを所望の相対位置に配置する場所と、酸化剤供給管及び冷却管をガス化炉の燃焼炉などに設置する場所とを別々の場所とすることができる。したがって、例えば、工場で酸化剤供給管及び冷却管をフランジに固定した場合には、ガス化炉の燃焼炉などに酸化剤供給管及び冷却管を設置する現場では、フランジを炉壁に固定するだけで、酸化剤供給管と冷却管とを所望の相対位置でガス化炉に設置することができる。よって、現場での酸化剤供給管と冷却管との相対位置を調整する作業を省くことができる。したがって、ガス化炉に酸化剤供給管及び冷却管を設置する際の作業性を向上させることができる。
　また、フランジが着脱可能に炉壁に固定されているので、酸化剤供給管や冷却管を交換する場合には、フランジを炉壁から簡単に取り外すことができ、簡易に交換を行うことができる。 In the above configuration, since the oxidant supply pipe and the cooling pipe are fixed to the flange, the oxidant supply pipe and the cooling pipe can be installed in the gasification furnace only by fixing the flange to the furnace wall. In addition, since the oxidant supply pipe and the cooling pipe are fixed to the flange, the oxidant supply pipe and the cooling pipe can be transported while being arranged at desired relative positions. Thereby, the place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position and the place where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace, etc., can be separated. it can. Therefore, for example, when the oxidant supply pipe and the cooling pipe are fixed to the flange at the factory, the flange is fixed to the furnace wall at the site where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace. The oxidant supply pipe and the cooling pipe can be installed in the gasification furnace at a desired relative position. Therefore, the work of adjusting the relative position between the oxidant supply pipe and the cooling pipe in the field can be omitted. Therefore, workability when installing the oxidant supply pipe and the cooling pipe in the gasification furnace can be improved.
In addition, since the flange is detachably fixed to the furnace wall, when the oxidant supply pipe or the cooling pipe is replaced, the flange can be easily removed from the furnace wall and can be easily replaced. .
　また、本発明の一態様に係るバーナは、前記冷却管の前記炉内側の先端部が、前記酸化剤供給管の前記炉内側の先端部よりも、所定の長さ前記炉内側に位置していてもよい。 Further, in the burner according to one aspect of the present invention, the front end portion of the cooling pipe inside the furnace is positioned at a predetermined length inside the furnace than the front end portion of the oxidizing agent supply pipe inside the furnace. May be.
　上記構成では、冷却管の先端部を酸化剤供給管の先端部よりも所定の長さ炉内側に位置している。このような、酸化剤供給管と冷却管との相対的な位置決めに高い精度が求められるバーナであっても、酸化剤供給管と冷却管とを所望の相対位置に配置する場所と、酸化剤供給管及び冷却管をガス化炉の燃焼炉などに設置する場所とを別々の場所とすることができる。したがって、例えば、工場で酸化剤供給管及び冷却管をフランジに固定した場合には、ガス化炉の燃焼炉などに酸化剤供給管及び冷却管を設置する現場では、より作業性を向上させることができる。 In the above configuration, the tip of the cooling pipe is positioned inside the furnace by a predetermined length from the tip of the oxidant supply pipe. Even in such a burner that requires high accuracy in the relative positioning of the oxidant supply pipe and the cooling pipe, a place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position, and the oxidant The place where the supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace can be set as separate places. Therefore, for example, when the oxidant supply pipe and the cooling pipe are fixed to the flange in the factory, the workability is further improved at the site where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace. Can do.
　本発明の一態様に係るガス化炉は、上記のバーナを備えている。このようなガス化炉では、酸化剤供給管及び冷却管を設置する際の作業性を向上させることができる。また、酸化剤供給管や冷却管を簡易に交換することができる。 A gasification furnace according to one embodiment of the present invention includes the above burner. In such a gasification furnace, workability when installing the oxidant supply pipe and the cooling pipe can be improved. Further, the oxidant supply pipe and the cooling pipe can be easily replaced.
　本発明の一態様に係るバーナの取付方法は、炉内に酸化剤を供給する酸化剤供給管と、前記酸化剤供給管内の同軸線上に配置され、燃料及び酸化剤を供給する酸化剤燃料供給管と、前記酸化剤供給管を取り囲むように設けられた冷却管と、前記酸化剤供給管と前記冷却管とが固定されるとともに、炉壁に対して着脱可能に固定されるフランジと、を備えているバーナの取付方法であって、前記フランジに前記酸化剤供給管を固定する供給管固定工程と、前記フランジに前記冷却管を固定する冷却管固定工程と、前記供給管固定工程及び前記冷却管固定工程のあとに、前記フランジを前記炉壁に対して着脱可能に固定するフランジ固定工程と、を有し、前記フランジ固定工程により前記酸化剤供給管と前記冷却管の前記炉内に突出する位置を管理する。 A burner mounting method according to an aspect of the present invention includes an oxidant supply pipe that supplies an oxidant into a furnace, and an oxidant fuel supply that is disposed on a coaxial line in the oxidant supply pipe and supplies fuel and an oxidant. A pipe, a cooling pipe provided so as to surround the oxidant supply pipe, a flange fixed to the oxidant supply pipe and the cooling pipe and detachably fixed to the furnace wall, A burner mounting method comprising: a supply pipe fixing step of fixing the oxidant supply pipe to the flange; a cooling pipe fixing step of fixing the cooling pipe to the flange; the supply pipe fixing step; A flange fixing step for fixing the flange to the furnace wall in a detachable manner after the cooling pipe fixing step, and the oxidant supply pipe and the cooling pipe in the furnace by the flange fixing step. The protruding position To management.
　上記構成では、酸化剤供給管及び冷却管がフランジに固定されているので、フランジを炉壁に固定するだけで酸化剤供給管及び冷却管をガス化炉の燃焼炉などに設置することができる。また、酸化剤供給管と冷却管とをフランジに固定したあとに、フランジを炉壁に固定するので、酸化剤供給管と冷却管とを所望の相対位置に配置した状態のまま運搬をすることができる。したがって、酸化剤供給管と冷却管とを所望の相対位置に配置する場所と、酸化剤供給管及び冷却管をガス化炉に設置する場所とを同一の場所とする必要が無く、別々の場所とすることができ、酸化剤供給管と冷却管とを所望の相対位置に配置する場所はガス化炉付近である必要が無くなる。よって、ガス化炉に酸化剤供給管及び冷却管を設置する際の作業性を向上させることができる。
　また、フランジが着脱可能に炉壁に固定されているので、酸化剤供給管及び冷却管を交換する場合には、フランジを炉壁から簡単に取り外すことができ、簡易に交換を行うことができる。 In the above configuration, since the oxidant supply pipe and the cooling pipe are fixed to the flange, the oxidant supply pipe and the cooling pipe can be installed in the combustion furnace of the gasification furnace, etc., simply by fixing the flange to the furnace wall. . In addition, since the flange is fixed to the furnace wall after the oxidant supply pipe and the cooling pipe are fixed to the flange, the oxidant supply pipe and the cooling pipe are transported in a state where they are arranged at desired relative positions. Can do. Therefore, the place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position and the place where the oxidant supply pipe and the cooling pipe are installed in the gasification furnace do not need to be the same place, and are different places. The place where the oxidant supply pipe and the cooling pipe are arranged at a desired relative position does not need to be near the gasification furnace. Therefore, the workability | operativity at the time of installing an oxidizing agent supply pipe | tube and a cooling pipe in a gasification furnace can be improved.
In addition, since the flange is detachably fixed to the furnace wall, when replacing the oxidant supply pipe and the cooling pipe, the flange can be easily detached from the furnace wall and can be easily replaced. .
　また、本発明の一態様に係るバーナの取付方法は、前記酸化剤供給管及び前記冷却管が固定された前記フランジを運搬する運搬工程を有し、前記供給管固定工程及び前記冷却管固定工程は、工場で行われ、前記フランジ固定工程は、前記運搬工程のあとに、前記炉壁を有する燃焼炉に前記酸化剤供給管及び前記冷却管を設置する現場で行われてもよい。 The burner mounting method according to an aspect of the present invention includes a transporting process for transporting the flange to which the oxidant supply pipe and the cooling pipe are fixed, and the supply pipe fixing process and the cooling pipe fixing process. May be performed at a factory, and the flange fixing step may be performed at a site where the oxidizing agent supply pipe and the cooling pipe are installed in a combustion furnace having the furnace wall after the transporting process.
　上記構成では、工場で酸化剤供給管及び冷却管をフランジに固定され、固定された状態のまま運搬しているので、ガス化炉の燃焼炉などに酸化剤供給管及び冷却管を設置する現場では、フランジを炉壁に固定するだけで酸化剤供給管と冷却管とを所望の相対位置でガス化炉に設置することができる。したがって、現場での酸化剤供給管と冷却管との相対位置を調整する作業を省くことができ、ガス化炉に酸化剤供給管及び冷却管を設置する際の作業性を好適に向上させることができる。 In the above configuration, the oxidizer supply pipe and the cooling pipe are fixed to the flange in the factory and are transported in a fixed state. Therefore, the site where the oxidant supply pipe and the cooling pipe are installed in the combustion furnace of the gasification furnace. Then, the oxidant supply pipe and the cooling pipe can be installed in the gasification furnace at a desired relative position by simply fixing the flange to the furnace wall. Therefore, the work of adjusting the relative position of the oxidant supply pipe and the cooling pipe on site can be omitted, and the workability when installing the oxidant supply pipe and the cooling pipe in the gasification furnace is preferably improved. Can do.
　本発明によれば、ガス化炉の燃焼炉などに燃料及び酸化剤を供給するバーナの供給管及び冷却管を設置する際の作業性を向上させることができる。 According to the present invention, it is possible to improve workability when installing a supply pipe and a cooling pipe of a burner for supplying fuel and an oxidant to a combustion furnace of a gasification furnace.
本発明の実施形態に係るバーナの縦断面図である。It is a longitudinal cross-sectional view of the burner which concerns on embodiment of this invention. 図１のバーナの側面図である。It is a side view of the burner of FIG. 本発明の実施形態に係るガス化炉の概略構成図である。It is a schematic block diagram of the gasification furnace which concerns on embodiment of this invention.
　以下に、本発明に係るバーナ及びバーナを備えたガス化炉並びにバーナの取付方法の一実施形態について、図１から図３を参照して説明する。
　本実施形態に係るバーナは、図３に示されている石炭ガス化炉（ガス化炉）３０等に設けられる。 Hereinafter, an embodiment of a burner according to the present invention, a gasification furnace including the burner, and a burner mounting method will be described with reference to FIGS. 1 to 3.
The burner according to the present embodiment is provided in the coal gasification furnace (gasification furnace) 30 shown in FIG.
　石炭ガス化炉３０は、鉛直方向に延びて形成されており、鉛直方向の下方側に微粉炭及び酸素が供給され、部分燃焼させてガス化した生成ガスが鉛直方向の下方側から上方側に向かって流通している。石炭ガス化炉３０は、圧力容器１１０と、圧力容器１１０の内部に設けられるガス化炉壁（炉壁）１１１とを有している。そして、石炭ガス化炉３０は、圧力容器１１０とガス化炉壁１１１との間の空間にアニュラス部１１５を形成している。また、石炭ガス化炉３０は、ガス化炉壁１１１の内部の空間において、鉛直方向の下方側（つまり、生成ガスの流通方向の上流側）から順に、コンバスタ部１１６、ディフューザ部１１７、リダクタ部１１８を形成している。 The coal gasification furnace 30 is formed to extend in the vertical direction, and pulverized coal and oxygen are supplied to the lower side in the vertical direction, and the product gas gasified by partial combustion from the lower side in the vertical direction to the upper side. It is in circulation. The coal gasification furnace 30 includes a pressure vessel 110 and a gasification furnace wall (furnace wall) 111 provided inside the pressure vessel 110. The coal gasification furnace 30 forms an annulus portion 115 in the space between the pressure vessel 110 and the gasification furnace wall 111. Further, the coal gasification furnace 30 includes a combustor section 116, a diffuser section 117, and a reductor section in the space inside the gasification furnace wall 111 in order from the lower side in the vertical direction (that is, the upstream side in the flow direction of the product gas). 118 is formed.
　圧力容器１１０は、内部が中空空間となる筒形状に形成され、上端部にガス排出口１２１が形成される一方、下端部（底部）にスラグホッパ１２２が形成されている。ガス化炉壁１１１は、内部が中空空間となる筒形状に形成され、その壁面が圧力容器１１０の内面と対向して設けられている。本実施形態では圧力容器１１０は円筒形状で、ガス化炉壁１１１のディフューザ部１１７も円筒形状に形成されている。そして、ガス化炉壁１１１は、図示しない支持部材により圧力容器１１０内面に連結されている。 The pressure vessel 110 is formed in a cylindrical shape having a hollow space inside, a gas discharge port 121 is formed at the upper end portion, and a slag hopper 122 is formed at the lower end portion (bottom portion). The gasification furnace wall 111 is formed in a cylindrical shape whose inside is a hollow space, and the wall surface thereof is provided to face the inner surface of the pressure vessel 110. In this embodiment, the pressure vessel 110 has a cylindrical shape, and the diffuser portion 117 of the gasification furnace wall 111 is also formed in a cylindrical shape. The gasification furnace wall 111 is connected to the inner surface of the pressure vessel 110 by a support member (not shown).
　ガス化炉壁１１１は、圧力容器１１０の内部を内部空間１５４と外部空間１５６に分離する。ガス化炉壁１１１は、後述するが、横断面形状がコンバスタ部１１６とリダクタ部１１８との間のディフューザ部１１７で変化する形状とされている。ガス化炉壁１１１は、鉛直上方側となるその上端部が、圧力容器１１０のガス排出口１２１に接続され、鉛直下方側となるその下端部が圧力容器１１０の底部と隙間を空けて設けられている。そして、圧力容器１１０の底部に形成されるスラグホッパ１２２には、貯留水が溜められており、ガス化炉壁１１１の下端部が貯留水に浸水することで、ガス化炉壁１１１の内外を封止している。ガス化炉壁１１１には、バーナ１２６、１２７が挿入され、内部空間１５４にシンガスクーラ１０２が配置されている。ガス化炉壁１１１の構造については後述する。 The gasification furnace wall 111 separates the inside of the pressure vessel 110 into an internal space 154 and an external space 156. As will be described later, the gasification furnace wall 111 has a cross-sectional shape that changes in a diffuser portion 117 between the combustor portion 116 and the reductor portion 118. The upper end portion of the gasification furnace wall 111 on the vertically upper side is connected to the gas discharge port 121 of the pressure vessel 110, and the lower end portion on the vertically lower side is provided with a gap from the bottom portion of the pressure vessel 110. ing. The slag hopper 122 formed at the bottom of the pressure vessel 110 stores stored water, and the lower end of the gasification furnace wall 111 is immersed in the stored water, thereby sealing the inside and outside of the gasification furnace wall 111. It has stopped. Burners 126 and 127 are inserted into the gasification furnace wall 111, and the syngas cooler 102 is disposed in the internal space 154. The structure of the gasification furnace wall 111 will be described later.
　アニュラス部１１５は、圧力容器１１０の内側とガス化炉壁１１１の外側に形成された空間、つまり外部空間１５６であり、空気分離設備４２で分離された不活性ガスである窒素が、図示しない窒素供給ラインを通って供給される。このため、アニュラス部１１５は、窒素が充満する空間となる。なお、このアニュラス部１１５の鉛直方向の上部付近には、ガス化炉１０１内を均圧にするための図示しない炉内均圧管が設けられている。炉内均圧管は、ガス化炉壁１１１の内外を連通して設けられ、ガス化炉壁１１１の内部（コンバスタ部１１６、ディフューザ部１１７及びリダクタ部１１８）と外部（アニュラス部１１５）との圧力差を所定圧力以内となるよう略均圧にしている。 The annulus 115 is a space formed inside the pressure vessel 110 and outside the gasification furnace wall 111, that is, an external space 156. Nitrogen, which is an inert gas separated by the air separation equipment 42, is not shown in the figure. Supplied through the supply line. For this reason, the annulus portion 115 becomes a space filled with nitrogen. An in-furnace pressure equalizing tube (not shown) for equalizing the pressure in the gasification furnace 101 is provided in the vicinity of the upper portion of the annulus portion 115 in the vertical direction. The pressure equalizing pipe in the furnace is provided so as to communicate between the inside and outside of the gasification furnace wall 111, and the pressure between the inside (combustor part 116, diffuser part 117 and reductor part 118) and outside (annulus part 115) of the gasification furnace wall 111. The pressure is almost equalized so that the difference is within a predetermined pressure.
　コンバスタ部１１６は、微粉炭及びチャーと空気とを一部燃焼させる空間となっており、コンバスタ部１１６におけるガス化炉壁１１１には、複数のバーナ１２６からなる燃焼装置が配置されている。コンバスタ部１１６で微粉炭及びチャーの一部を燃焼した高温の燃焼ガスは、ディフューザ部１１７を通過してリダクタ部１１８に流入する。 The combustor unit 116 is a space for partially burning pulverized coal, char, and air, and a combustion apparatus including a plurality of burners 126 is disposed on the gasification furnace wall 111 in the combustor unit 116. The high-temperature combustion gas obtained by burning part of the pulverized coal and char in the combustor unit 116 passes through the diffuser unit 117 and flows into the reductor unit 118.
　リダクタ部１１８は、ガス化反応に必要な高温状態に維持されコンバスタ部１１６からの燃焼ガスに微粉炭を供給し部分燃焼させて、微粉炭を揮発分（一酸化炭素、水素、低級炭化水素等）へと分解してガス化されて生成ガスを生成する空間となっており、リダクタ部１１８におけるガス化炉壁１１１には、複数のバーナ１２７からなる燃焼装置が配置されている。 The reductor unit 118 is maintained at a high temperature necessary for the gasification reaction, and supplies the pulverized coal to the combustion gas from the combustor unit 116 to partially burn the pulverized coal (for example, carbon monoxide, hydrogen, lower hydrocarbons, etc.). And a gasification furnace wall 111 in the reductor unit 118 is provided with a combustion device composed of a plurality of burners 127.
　シンガスクーラ１０２は、ガス化炉壁１１１の内部に設けられると共に、リダクタ部１１８のバーナ１２７の鉛直方向の上方側に設けられている。シンガスクーラ１０２は熱交換器であり、ガス化炉壁１１１の鉛直方向の下方側（生成ガスの流通方向の上流側）から順に、蒸発器（エバポレータ）１３１、過熱器（スーパーヒータ）１３２、節炭器（エコノマイザ）１３４が配置されている。これらのシンガスクーラ１０２は、リダクタ部１１８において生成された生成ガスと熱交換を行うことで、生成ガスを冷却する。また、蒸発器（エバポレータ）１３１、過熱器（スーパーヒータ）１３２、節炭器（エコノマイザ）１３４は、図に記載されたその数量を限定するものではない。 The syngas cooler 102 is provided inside the gasification furnace wall 111 and is provided above the burner 127 of the reductor unit 118 in the vertical direction. The syngas cooler 102 is a heat exchanger, and in order from the lower side in the vertical direction of the gasification furnace wall 111 (upstream side in the flow direction of the product gas), an evaporator 131, a superheater (superheater) 132, A charcoal unit (economizer) 134 is arranged. These syngas coolers 102 cool the generated gas by exchanging heat with the generated gas generated in the reductor unit 118. Further, the quantity of the evaporator (evaporator) 131, the superheater (superheater) 132, and the economizer 134 is not limited.
　ここで、ガス化炉３０の動作について説明する。
　石炭ガス化炉３０において、リダクタ部１１８のバーナ１２７により窒素と微粉炭が投入されて点火されると共に、コンバスタ部１１６のバーナ１２６により微粉炭及びチャーと圧縮空気（酸素）が投入されて点火される。すると、コンバスタ部１１６では、微粉炭とチャーの燃焼により高温燃焼ガスが発生する。また、コンバスタ部１１６では、微粉炭とチャーの燃焼により高温ガス中で溶融スラグが生成され、この溶融スラグがガス化炉壁１１１へ付着すると共に、炉底へ落下し、最終的にスラグホッパ１２２内の貯水へ排出される。そして、コンバスタ部１１６で発生した高温燃焼ガスは、ディフューザ部１１７を通ってリダクタ部１１８に上昇する。このリダクタ部１１８では、ガス化反応に必要な高温状態に維持されて、微粉炭が高温燃焼ガスと混合し、高温の還元雰囲気において微粉炭を部分燃焼させてガス化反応が行われ、生成ガスが生成される。ガス化した生成ガスが鉛直方向の下方側から上方側に向かって流通する。 Here, the operation of the gasification furnace 30 will be described.
In the coal gasification furnace 30, nitrogen and pulverized coal are introduced and ignited by the burner 127 of the reductor unit 118, and pulverized coal, char and compressed air (oxygen) are introduced and ignited by the burner 126 of the combustor unit 116. The Then, in the combustor unit 116, high-temperature combustion gas is generated by the combustion of pulverized coal and char. Further, in the combustor section 116, molten slag is generated in the high-temperature gas by the combustion of pulverized coal and char, and this molten slag adheres to the gasification furnace wall 111 and falls to the furnace bottom, and finally in the slag hopper 122. Discharged into the water storage. Then, the high-temperature combustion gas generated in the combustor unit 116 rises to the reductor unit 118 through the diffuser unit 117. In this reductor unit 118, the high temperature state necessary for the gasification reaction is maintained, the pulverized coal is mixed with the high temperature combustion gas, the pulverized coal is partially burned in a high temperature reducing atmosphere, and the gasification reaction is performed. Is generated. The gasified product gas flows from the lower side to the upper side in the vertical direction.
　次に、本実施形態に係るバーナ２周りの構造について、図１及び図２を用いて詳細に説明する。本実施形態に係るバーナ２は、例えば、石炭ガス化炉３０のコンバスタ部１１６やリダクタ部１１８等の燃焼炉におけるガス化炉壁１１１に設けられるバーナ１２６やバーナ１２７（図３参照）等に適用される。 Next, the structure around the burner 2 according to the present embodiment will be described in detail with reference to FIGS. The burner 2 according to the present embodiment is applied to, for example, the burner 126 and the burner 127 (see FIG. 3) provided on the gasification furnace wall 111 in the combustion furnace such as the combustor part 116 and the reductor part 118 of the coal gasification furnace 30. Is done.
　図３に示すように、石炭ガス化炉３０は、図示しない石炭粉砕機によって微粉化された微粉炭やチャー（石炭の未反応分と灰分）を酸化剤で部分燃焼させて生成ガス（可燃性ガス）を得るものである。本実施形態では、酸化剤として空気を用いる。燃焼炉１は、微粉炭やチャーを燃焼させることによって燃焼熱を生成し、下流側に位置するリダクタ部１１８におけるガス化反応に必要な熱量やスラグを溶融させるための熱量を供給するものである。 As shown in FIG. 3, the coal gasification furnace 30 partially burns pulverized coal and char (unreacted coal and ash content of coal) by an oxidizer, which is pulverized by a coal pulverizer (not shown), and generates a gas (combustible). Gas). In this embodiment, air is used as the oxidizing agent. The combustion furnace 1 generates combustion heat by burning pulverized coal and char, and supplies a heat amount necessary for a gasification reaction in the reductor unit 118 located on the downstream side and a heat amount for melting the slag. .
　上述のように、バーナ２は、燃焼炉１の周囲に複数設けられており、図１及び図２にはそのうちの１つのバーナ２が示されている。バーナ２は、ガス化炉壁１１１（図３参照）に形成された開口部３に挿通されている。ガス化炉壁１１１は、鉛直上下方向に延在して平行に設けられた複数の炉壁管４（図１ではそのうちの１本を図示している）を備えている。炉壁管４内には冷却水が流れるようになっている。ガス化炉壁１１１に形成される開口部３は、炉壁管４の一部を炉外側（図１において右側）にかつ側方に曲成することによって形成されている。 As described above, a plurality of burners 2 are provided around the combustion furnace 1, and one of the burners 2 is shown in FIGS. 1 and 2. The burner 2 is inserted through an opening 3 formed in the gasification furnace wall 111 (see FIG. 3). The gasification furnace wall 111 includes a plurality of furnace wall tubes 4 (one of which is shown in FIG. 1) extending in the vertical vertical direction and provided in parallel. Cooling water flows in the furnace wall tube 4. The opening 3 formed in the gasification furnace wall 111 is formed by bending a part of the furnace wall tube 4 to the outside (right side in FIG. 1) and to the side.
　バーナ２は、炉外から炉内にわたって配置される供給管５と、この供給管５の周りに巻回された冷却管６と、供給管５及び冷却管６が固定されている閉止フランジ（フランジ）７とを備えている。 The burner 2 includes a supply pipe 5 arranged from outside the furnace to the inside of the furnace, a cooling pipe 6 wound around the supply pipe 5, and a closed flange (flange) to which the supply pipe 5 and the cooling pipe 6 are fixed. 7).
　供給管５は、供給管５の外径を構成する空気供給管（酸化剤供給管）８と、空気供給管８の炉外側端部の外周面から該外周面から直交する方向に延びる円環板状の供給管フランジ部１０とを有する。空気供給管８の内部には、空気供給管８と同方向に延び、長手方向の軸中心を共通とする燃料供給管９が設置される。燃料供給管９の炉内側の先端は、空気供給管８の炉内側先端よりも炉内側から後退するように炉外側に位置し、燃料供給管９内には燃料として、微粉炭やチャーが搬送用一次空気とともに図示しない燃料ガス供給ラインより流通するようになっている。また、燃料供給管９の外面と空気供給管８の内面とは離間するように配置され、燃料供給管９の外面と空気供給管８の内面と間の空間には、空気（二次空気）が流通するようになっている。供給管フランジ部１０には、後述する炉外管フランジ部１３とボルト（図示省略）によって固定するためのボルト挿通孔１１が形成されている。供給管５から供給された燃料及び空気によって炉内にて火炎が形成されるようになっている。 The supply pipe 5 includes an air supply pipe (oxidant supply pipe) 8 constituting the outer diameter of the supply pipe 5 and an annular ring extending from the outer peripheral surface of the furnace outer end of the air supply pipe 8 in a direction orthogonal to the outer peripheral surface. And a plate-like supply pipe flange portion 10. A fuel supply pipe 9 extending in the same direction as the air supply pipe 8 and having a common axial center in the longitudinal direction is installed inside the air supply pipe 8. The tip inside the furnace of the fuel supply pipe 9 is located outside the furnace so as to recede from the inside of the furnace with respect to the tip inside the furnace of the air supply pipe 8, and pulverized coal or char is carried as fuel in the fuel supply pipe 9. It circulates from the fuel gas supply line which is not shown in figure with the primary air for use. Further, the outer surface of the fuel supply pipe 9 and the inner surface of the air supply pipe 8 are arranged so as to be separated from each other, and air (secondary air) is provided in the space between the outer surface of the fuel supply pipe 9 and the inner surface of the air supply pipe 8. Has come to circulate. The supply pipe flange portion 10 is formed with a bolt insertion hole 11 for fixing with an outer tube flange portion 13 (described later) and a bolt (not shown). A flame is formed in the furnace by the fuel and air supplied from the supply pipe 5.
　空気供給管８の炉外側の端部は、炉外に配置されている炉外管１２に接続される。炉外管１２の外径は、空気供給管８の内径よりわずかに小さな径とされ、炉外管１２の端部が空気供給管８に挿入されることで、空気供給管８と炉外管１２とは接続される。炉外管１２の外周面には、該外周面と直交する方向に延びる円環板状の炉外管フランジ部１３が設けられている。炉外管１２と炉外管フランジ部１３との固定箇所Ａ１は溶接によって固定されている。炉外管フランジ部１３には、供給管フランジ部１０とボルト（図示省略）によって固定するためのボルト挿通孔１４が形成されている。 The end of the air supply pipe 8 on the outside of the furnace is connected to a furnace pipe 12 arranged outside the furnace. The outer diameter of the outer tube 12 is slightly smaller than the inner diameter of the air supply tube 8, and the end of the outer tube 12 is inserted into the air supply tube 8, so that the air supply tube 8 and the outer tube are inserted. 12 is connected. On the outer peripheral surface of the outer tube 12, an annular plate-shaped outer tube flange portion 13 extending in a direction orthogonal to the outer peripheral surface is provided. The fixing point A1 between the furnace tube 12 and the furnace tube flange portion 13 is fixed by welding. The outer tube flange portion 13 is formed with a bolt insertion hole 14 for fixing with the supply tube flange portion 10 and a bolt (not shown).
　冷却管６は、内部に冷却水（冷却媒体）が流通するようになっており、第１冷却管１５及び第１冷却管１５よりも炉外側方向に位置する第２冷却管１６を有する。第１冷却管１５は、供給管５（空気供給管８）の外周面に接した状態で、供給管５を螺旋状に取り囲むように配置されている。第１冷却管１５の炉内側の先端部は、供給管５の先端部よりも、出代長さＬ１（図１参照）だけ炉内側に突出するように配置されている。後述するように、バーナ２を閉止フランジ７によりシールボックス２０に固定されている固定部材２２に取り付けた後に、第２冷却管１６は、第１冷却管１５の上流端および下流端に溶接接続されることで連続的に接続されている。すなわち、第１冷却管１５と第２冷却管１６とは、一連の連続した冷却管６とされている。冷却管６は、耐食性及び繰り返しの熱応力による熱疲労に耐える観点から、例えばＮｉ基合金やＮｉ含有合金（インコネル６２５等）によって形成されている。 The cooling pipe 6 has cooling water (cooling medium) flowing therein, and has a first cooling pipe 15 and a second cooling pipe 16 positioned in the furnace outer direction than the first cooling pipe 15. The 1st cooling pipe 15 is arrange | positioned so that the supply pipe | tube 5 may be surrounded spirally in the state which contact | connected the outer peripheral surface of the supply pipe | tube 5 (air supply pipe | tube 8). The front end portion of the first cooling pipe 15 inside the furnace is disposed so as to protrude from the front end portion of the supply pipe 5 to the inside of the furnace by the allowance length L1 (see FIG. 1). As will be described later, after the burner 2 is attached to the fixing member 22 fixed to the seal box 20 by the closing flange 7, the second cooling pipe 16 is welded to the upstream end and the downstream end of the first cooling pipe 15. Are connected continuously. That is, the first cooling pipe 15 and the second cooling pipe 16 are a series of continuous cooling pipes 6. The cooling pipe 6 is made of, for example, a Ni-based alloy or a Ni-containing alloy (such as Inconel 625) from the viewpoint of withstanding corrosion resistance and thermal fatigue due to repeated thermal stress.
　閉止フランジ７は、図２に示すように、円環板状部材であって、略中心部分に供給管５を挿通するための供給管挿通孔１７が形成されている。閉止フランジ７は耐熱性と耐食性から、例えばステンレス鋼（ＳＵＳ３１６Ｌ等）により形成されている。また、供給管挿通孔１７の外周側には、冷却管６を挿通するための冷却管挿通孔１８が、例えば紙面上下に２つ形成されている。また、冷却管挿通孔１８よりも外周側には、外周に沿うように複数（本実施形態では例えば１６個）のボルト挿通孔１９が形成されている。このボルト挿通孔１９は、後述するシールボックス２０に固定されている固定部材２２と、閉止フランジ７とを固定するための孔である。 As shown in FIG. 2, the closing flange 7 is an annular plate-like member, and a supply pipe insertion hole 17 for inserting the supply pipe 5 is formed in a substantially central portion. The closing flange 7 is made of, for example, stainless steel (SUS316L or the like) due to heat resistance and corrosion resistance. Further, on the outer peripheral side of the supply pipe insertion hole 17, two cooling pipe insertion holes 18 for inserting the cooling pipe 6 are formed, for example, on the upper and lower sides of the paper surface. A plurality (for example, 16 in this embodiment) of bolt insertion holes 19 are formed on the outer peripheral side of the cooling pipe insertion hole 18 so as to extend along the outer periphery. The bolt insertion hole 19 is a hole for fixing the fixing member 22 fixed to the seal box 20 described later and the closing flange 7.
　炉外側には、炉壁管４によって形成された開口部３を覆うようにシールボックス２０が設けられている。シールボックス２０は例えばステンレス製とされている。シールボックス２０内には、耐火材２１が充填されている。耐火材２１としては、例えばアルミナやシリカが好適に用いられる。これらシールボックス２０及び耐火材２１により、加圧された炉内の圧力を維持するとともに、バーナ２と開口部３との隙間から炉外へ漏出する輻射やスラグが更に外部への漏出を可及的に防止することができる。 A seal box 20 is provided outside the furnace so as to cover the opening 3 formed by the furnace wall tube 4. The seal box 20 is made of, for example, stainless steel. The seal box 20 is filled with a refractory material 21. As the refractory material 21, for example, alumina or silica is preferably used. The sealed box 20 and the refractory material 21 maintain the pressurized pressure in the furnace, and radiation and slag leaking out of the furnace through the gap between the burner 2 and the opening 3 can further leak to the outside. Can be prevented.
　シールボックス２０の炉外側の面には、シールボックス２０と閉止フランジ７とを接続する固定部材２２が設けられている。固定部材２２は、シールボックス２０の炉外側の面に設けられた固定箇所Ａ２に溶接固定されて炉外側方向に延びる円筒部２３と、円筒部２３の炉外側端部からシールボックス２０の炉外側の面に延びる固定部材フランジ部２４とを有する。固定部材フランジ部２４には、閉止フランジ７と固定するためのボルト挿通孔２５が形成されている。 A fixing member 22 for connecting the seal box 20 and the closing flange 7 is provided on the outer surface of the seal box 20. The fixing member 22 is welded and fixed to a fixing location A2 provided on the outer surface of the furnace of the seal box 20 and extends in the furnace outer direction, and the outer side of the furnace of the seal box 20 from the outer end of the cylindrical part 23. And a fixing member flange portion 24 extending on the surface. The fixing member flange portion 24 is formed with a bolt insertion hole 25 for fixing to the closing flange 7.
　次に、本実施形態におけるバーナ２の固定態様について説明する。
　バーナ２は閉止フランジ７を基準にして各部位を固定している。閉止フランジ７と供給管５との固定箇所Ａ３は、溶接固定されている。すなわち、閉止フランジ７に形成された供給管挿通孔１７に供給管５（空気供給管８）が挿通された状態で、閉止フランジ７と供給管５の外面とが溶接固定されている。閉止フランジ７と冷却管６との固定箇所Ａ４は、溶接固定されている。すなわち、閉止フランジ７に形成された冷却管挿通孔１８に冷却管６が挿通された状態で、閉止フランジ７と冷却管６（第１冷却管１５）の外面とが溶接固定されている。このように、閉止フランジ７と供給管５及び冷却管６とは、溶接固定によって固定され、一体的な構造となっている。すなわち、閉止フランジ７に対して、供給管５の炉内側先端位置と冷却管６（第１冷却管１５）の炉内側先端部の位置が、固定されている。 Next, the fixing aspect of the burner 2 in this embodiment is demonstrated.
Each part of the burner 2 is fixed with reference to the closing flange 7. A fixing portion A3 between the closing flange 7 and the supply pipe 5 is fixed by welding. That is, with the supply pipe 5 (air supply pipe 8) inserted through the supply pipe insertion hole 17 formed in the closing flange 7, the closing flange 7 and the outer surface of the supply pipe 5 are fixed by welding. A fixing point A4 between the closing flange 7 and the cooling pipe 6 is fixed by welding. That is, in the state where the cooling pipe 6 is inserted into the cooling pipe insertion hole 18 formed in the closing flange 7, the closing flange 7 and the outer surface of the cooling pipe 6 (first cooling pipe 15) are fixed by welding. Thus, the closing flange 7, the supply pipe 5, and the cooling pipe 6 are fixed by welding and have an integral structure. That is, with respect to the closing flange 7, the furnace inner tip position of the supply pipe 5 and the furnace inner tip position of the cooling pipe 6 (first cooling pipe 15) are fixed.
　閉止フランジ７と固定部材２２とはボルト（図示省略）によって着脱可能に固定される。具体的には、閉止フランジ７に形成されたボルト挿通孔１９と、固定部材フランジ部２４に形成されたボルト挿通孔２５とが重なった状態で、両挿通孔１９，２５を挿通するボルト（図示省略）によって締結固定される。また、供給管５と炉外管１２とはボルト（図示省略）によって着脱可能に固定される。具体的には、供給管フランジ部１０に形成されたボルト挿通孔１１と、炉外管フランジ部１３に形成されたボルト挿通孔１４とが重なった状態で、両挿通孔１１，１４を挿通するボルト（図示省略）によって締結固定されている。 The closing flange 7 and the fixing member 22 are detachably fixed by bolts (not shown). Specifically, a bolt (not shown) is inserted through both insertion holes 19 and 25 in a state where the bolt insertion hole 19 formed in the closing flange 7 and the bolt insertion hole 25 formed in the fixing member flange portion 24 overlap each other. It is fixed by fastening. The supply pipe 5 and the furnace outer pipe 12 are detachably fixed by bolts (not shown). Specifically, both the insertion holes 11 and 14 are inserted in a state where the bolt insertion holes 11 formed in the supply pipe flange portion 10 and the bolt insertion holes 14 formed in the outer tube flange portion 13 overlap. It is fastened and fixed by bolts (not shown).
　上記構成によるバーナ２は、以下のように使用される。
　供給管５の炉内側先端部では、図示しない供給源から供給された燃料及び一次空気が燃料供給管９から噴出し、二次空気が空気供給管８から噴出される。供給管５の炉内側先端から噴出された燃料及び空気は、炉内にて、既に形成されている燃料領域に投入され、所望の燃焼状態が維持される。一方、炉内に形成された火炎による燃焼輻射熱から供給管５を保護するため、冷却管６内に冷却水が流されて、供給管５の炉内側突出部を冷却する。冷却水は図示しない冷却水源から供給され、冷却管６内を流通した後に、外部へ流出される。 The burner 2 configured as described above is used as follows.
At the front end inside the furnace of the supply pipe 5, fuel and primary air supplied from a supply source (not shown) are ejected from the fuel supply pipe 9, and secondary air is ejected from the air supply pipe 8. The fuel and air ejected from the front end of the supply pipe 5 inside the furnace are introduced into the fuel region already formed in the furnace, and a desired combustion state is maintained. On the other hand, in order to protect the supply pipe 5 from the combustion radiant heat generated by the flame formed in the furnace, cooling water is flowed into the cooling pipe 6 to cool the furnace inner protrusion of the supply pipe 5. The cooling water is supplied from a cooling water source (not shown), flows through the cooling pipe 6 and then flows out to the outside.
　次に、本実施形態におけるバーナ２の取付方法について説明する。
　本実施形態では、供給管５（空気供給管８）及び冷却管６を閉止フランジ７に固定箇所Ａ３，Ａ４を溶接固定する工程（供給管固定工程及び冷却管固定工程）は工場で行われる。詳細には、第１冷却管１５の炉内側の先端部が、供給管５（空気供給管８）の先端部よりも、所定の出代長さＬ１（図１参照）炉内側に突出するように、供給管５及び冷却管６を閉止フランジ７に位置管理して固定する工程を工場で行う。その後、供給管５及び冷却管６が固定された閉止フランジ７を所定の運搬手段によって、燃焼炉１が設置されている現場に運搬する（運搬工程）。現場では、閉止フランジ７と固定部材２２とをボルト留めし、さらに、供給管５と炉外管１２とをボルト留めすることで、燃焼炉１に供給管５及び冷却管６を設置する（フランジ固定工程）。
　その後、第１冷却管１５の上流端および下流端に、第２冷却管１６を溶接固定接続して、冷却管６は連続的に接続される。
　また、供給管５において、空気供給管８の内部には、空気供給管８と同方向に延び、長手方向の軸中心を共通として燃料供給管９が設置される。燃料供給管９の炉内側の先端は、空気供給管８の炉内側先端よりも、所定の長さで炉内側から後退する位置になるよう据付けて固定される。この際に、空気供給管８は閉止フランジ７に位置を管理して固定されているので、燃料供給管９の空気供給管８との位置合わせと設置は、従来よりも容易に実施することが可能となる。 Next, the attachment method of the burner 2 in this embodiment is demonstrated.
In this embodiment, the process (supply pipe fixing process and cooling pipe fixing process) of fixing the fixing locations A3 and A4 by welding the supply pipe 5 (air supply pipe 8) and the cooling pipe 6 to the closing flange 7 is performed at the factory. Specifically, the front end portion of the first cooling pipe 15 inside the furnace protrudes from the front end portion of the supply pipe 5 (air supply pipe 8) to the inside of the furnace with a predetermined allowance length L1 (see FIG. 1). In addition, a process of managing the position of the supply pipe 5 and the cooling pipe 6 to the closing flange 7 and fixing them is performed at the factory. Thereafter, the closing flange 7 to which the supply pipe 5 and the cooling pipe 6 are fixed is transported to a site where the combustion furnace 1 is installed by a predetermined transport means (transport process). On the site, the supply pipe 5 and the cooling pipe 6 are installed in the combustion furnace 1 by bolting the closing flange 7 and the fixing member 22 and further bolting the supply pipe 5 and the furnace outer pipe 12 (flange). Fixing process).
Thereafter, the second cooling pipe 16 is welded and connected to the upstream end and the downstream end of the first cooling pipe 15 so that the cooling pipe 6 is continuously connected.
Further, in the supply pipe 5, a fuel supply pipe 9 is installed inside the air supply pipe 8 so as to extend in the same direction as the air supply pipe 8 and share the longitudinal axial center. The tip inside the furnace of the fuel supply pipe 9 is installed and fixed so as to be in a position retracting from the inside of the furnace by a predetermined length than the tip inside the furnace of the air supply pipe 8. At this time, since the air supply pipe 8 is fixed to the closing flange 7 while managing the position, the alignment and installation of the fuel supply pipe 9 with the air supply pipe 8 can be performed more easily than in the past. It becomes possible.
　本実施形態によれば、以下の作用効果を奏する。
　本実施形態では、供給管５及び冷却管６が閉止フランジ７に固定されているので、閉止フランジ７をガス化炉壁１１１（図３参照）のシールボックス２０に固定されている固定部材２２に取り付けて固定するだけで供給管５及び冷却管６を燃焼炉１に設置することができる。また、供給管５及び冷却管６は、閉止フランジ７に固定されているので、供給管５と冷却管６とを所望の相対位置に配置した状態のまま運搬をすることができる。これにより、供給管５と冷却管６とを所望の相対位置に配置して固定する場所と、供給管５及び冷却管６を燃焼炉１に設置する場所とを別々の場所とすることができる。 According to this embodiment, there exist the following effects.
In this embodiment, since the supply pipe 5 and the cooling pipe 6 are fixed to the closing flange 7, the closing flange 7 is fixed to the fixing member 22 fixed to the seal box 20 of the gasification furnace wall 111 (see FIG. 3). The supply pipe 5 and the cooling pipe 6 can be installed in the combustion furnace 1 simply by being attached and fixed. Further, since the supply pipe 5 and the cooling pipe 6 are fixed to the closing flange 7, the supply pipe 5 and the cooling pipe 6 can be transported while being arranged at desired relative positions. Thereby, the place which arrange | positions and fixes the supply pipe | tube 5 and the cooling pipe 6 in a desired relative position, and the place which installs the supply pipe | tube 5 and the cooling pipe 6 in the combustion furnace 1 can be made into a separate place. .
　本実施形態では、冷却管６の炉内側の先端部は、供給管５（空気供給管８）の先端部よりも、所定の出代長さＬ１（図１参照）だけ炉内側に突出するように配置して供給管５に対する冷却を行っている。このような構造では、出代長さＬ１を長くすることで供給管５の冷却効果を向上することが出来るが、あまり長くしてしまうと、燃料供給管９から噴出される燃料（微粉炭やチャー）が、冷却管６の突出部分に衝突し、この突出部分において粉粒摩耗を起こし、突出部分を損傷させてしまうおそれがある。したがって、冷却管６の突出部分の出代長さＬ１は、粉粒摩耗を防ぎつつ冷却効果を得られるように、取付位置の精度を高く管理して固定する必要がある。 In the present embodiment, the front end portion of the cooling pipe 6 inside the furnace protrudes from the front end portion of the supply pipe 5 (air supply pipe 8) to the inside of the furnace by a predetermined allowance length L1 (see FIG. 1). It cools with respect to the supply pipe | tube 5 by arrange | positioning. In such a structure, the cooling effect of the supply pipe 5 can be improved by increasing the allowance length L1, but if it is made too long, the fuel (pulverized coal or Char) may collide with the projecting portion of the cooling pipe 6, causing particle wear at the projecting portion and possibly damaging the projecting portion. Therefore, the protrusion allowance length L1 of the protruding portion of the cooling pipe 6 needs to be fixed with high accuracy of the mounting position so that a cooling effect can be obtained while preventing powder wear.
　本実施形態では、供給管５（空気供給管８）及び冷却管６を閉止フランジ７に固定箇所Ａ３，Ａ４を溶接固定する工程を工場で行っている。すなわち、高い精度が求められる冷却管６の突出部分の出代長さＬ１を所望の長さに調整する工程を工場で行なっている。そして、この所望の出代長さＬ１を維持した状態で燃焼炉１が設けられている現場まで運搬している。したがって、燃焼炉１に供給管５及び冷却管６を設置する現場では、閉止フランジ７を固定部材２２に固定するだけで、供給管５と冷却管６とを所望の相対位置で燃焼炉１に設置することができる。よって、現場での冷却管６の突出部分の出代長さＬ１を所望の長さに調整する作業を省くことができる。したがって、燃焼炉１に供給管５及び冷却管６を設置する際の作業性を向上させることができる。 In this embodiment, the process of welding and fixing the fixing points A3 and A4 to the closing flange 7 with the supply pipe 5 (air supply pipe 8) and the cooling pipe 6 is performed at the factory. That is, the process of adjusting the protruding length L1 of the protruding portion of the cooling pipe 6 that requires high accuracy to a desired length is performed at the factory. And it is conveyed to the site | part in which the combustion furnace 1 is provided in the state which maintained this desired output allowance length L1. Therefore, at the site where the supply pipe 5 and the cooling pipe 6 are installed in the combustion furnace 1, the supply pipe 5 and the cooling pipe 6 are connected to the combustion furnace 1 at a desired relative position by simply fixing the closing flange 7 to the fixing member 22. Can be installed. Therefore, it is possible to omit the work of adjusting the protrusion allowance length L1 of the protruding portion of the cooling pipe 6 to a desired length on site. Therefore, the workability when installing the supply pipe 5 and the cooling pipe 6 in the combustion furnace 1 can be improved.
　また、閉止フランジ７が着脱可能にガス化炉壁１１１に対して固定されているので、メンテナンス等で供給管５や冷却管６を交換する場合には、着脱可能な閉止フランジ７をガス化炉壁１１１から簡単に取り外すことができ、簡易に交換を行うことができる。 Further, since the closing flange 7 is detachably fixed to the gasification furnace wall 111, when the supply pipe 5 or the cooling pipe 6 is replaced for maintenance or the like, the detachable closing flange 7 is used as the gasification furnace. It can be easily removed from the wall 111 and can be easily replaced.
　なお、本発明は、上記各実施形態にかかる発明に限定されるものではなく、その要旨を逸脱しない範囲において、適宜変形が可能である。例えば、本実施形態では、冷却管６の炉内側の先端部は、供給管５の先端部よりも、出代長さＬ１だけ炉内側に突出するように配置されているが、供給管の性耐熱性と冷却効果とを考慮して、冷却管６の炉内側の先端部を炉内側に突出させずに、供給管５の先端部付近に配置してもよい。 Note that the present invention is not limited to the invention according to each of the above embodiments, and can be appropriately modified without departing from the scope of the invention. For example, in the present embodiment, the front end portion of the cooling pipe 6 on the furnace inner side is arranged so as to protrude from the front end part of the supply pipe 5 to the inner side of the furnace by the allowance length L1. In consideration of the heat resistance and the cooling effect, the tip of the cooling pipe 6 inside the furnace may be arranged in the vicinity of the tip of the supply pipe 5 without protruding inside the furnace.
１　　　燃焼炉
２　　　バーナ
５　　　供給管
６　　　冷却管
７　　　閉止フランジ（フランジ）
８　　　空気供給管（酸化剤供給管）
９　　　燃料供給管
１０　　供給管フランジ部
１２　　炉外管
１３　　炉外管フランジ部
１５　　第１冷却管
１６　　第２冷却管
２０　　シールボックス
２２　　固定部材
２４　　固定部材フランジ部
３０　　石炭ガス化炉（ガス化炉）
Ｌ１　　出代長さ 1 Combustion furnace 2 Burner 5 Supply pipe 6 Cooling pipe 7 Closing flange (flange)
8 Air supply pipe (oxidant supply pipe)
DESCRIPTION OF SYMBOLS 9 Fuel supply pipe 10 Supply pipe flange part 12 Outer furnace pipe 13 Outer furnace pipe flange part 15 1st cooling pipe 16 2nd cooling pipe 20 Seal box 22 Fixing member 24 Fixing member flange part 30 Coal gasification furnace (gasification furnace)
L1 departure length

Claims (5)

  1. 　炉内に酸化剤を供給する酸化剤供給管と、
    　前記酸化剤供給管内の同軸線上に配置され、燃料及び酸化剤を供給する燃料供給管と、
    　前記酸化剤供給管を取り囲むように設けられた冷却管と、
    　前記酸化剤供給管と前記冷却管とが固定されるとともに、炉壁に対して着脱可能に固定されるフランジと、
    を備えているバーナ。     An oxidant supply pipe for supplying an oxidant into the furnace;
    A fuel supply pipe disposed on a coaxial line in the oxidant supply pipe and supplying fuel and oxidant;
    A cooling pipe provided to surround the oxidant supply pipe;
    A flange that is fixed to the furnace wall in a detachable manner while the oxidant supply pipe and the cooling pipe are fixed,
    Burner equipped with.
  2. 　前記冷却管の前記炉内側の先端部は、前記酸化剤供給管の前記炉内側の先端部よりも、所定の長さ前記炉内側に位置する請求項１に記載のバーナ。 2. The burner according to claim 1, wherein a front end portion of the cooling pipe inside the furnace is positioned a predetermined length inside the furnace than a front end portion of the oxidizing agent supply pipe inside the furnace.
  3. 　請求項１または請求項２に記載のバーナを備えているガス化炉。 A gasification furnace comprising the burner according to claim 1 or 2.
  4. 　炉内に酸化剤を供給する酸化剤供給管と、
    　前記供給管内の同軸線上に配置され、燃料及び酸化剤を供給する燃料供給管と、
    　前記酸化剤供給管を取り囲むように設けられた冷却管と、
    　前記酸化剤供給管と前記冷却管とが固定されるとともに、炉壁に対して着脱可能に固定されるフランジと、
    を備えているバーナの取付方法であって、
    　前記フランジに前記酸化剤供給管を固定する供給管固定工程と、
    　前記フランジに前記冷却管を固定する冷却管固定工程と、
    　前記供給管固定工程及び前記冷却管固定工程のあとに、前記フランジを前記炉壁に対して着脱可能に固定するフランジ固定工程と、
    を有し、
    　前記フランジ固定工程により前記酸化剤供給管及び前記冷却管の前記炉内に突出する位置を管理するバーナの取付方法。     An oxidant supply pipe for supplying an oxidant into the furnace;
    A fuel supply pipe disposed on a coaxial line in the supply pipe for supplying fuel and oxidant;
    A cooling pipe provided to surround the oxidant supply pipe;
    A flange that is fixed to the furnace wall in a detachable manner while the oxidant supply pipe and the cooling pipe are fixed,
    A burner mounting method comprising:
    A supply pipe fixing step of fixing the oxidant supply pipe to the flange;
    A cooling pipe fixing step of fixing the cooling pipe to the flange;
    After the supply pipe fixing step and the cooling pipe fixing step, a flange fixing step of fixing the flange detachably to the furnace wall;
    Have
    A burner mounting method for managing positions of the oxidant supply pipe and the cooling pipe protruding into the furnace by the flange fixing step.
  5. 　前記酸化剤供給管及び前記冷却管が固定された前記フランジを運搬する運搬工程を有し、
    　前記供給管固定工程及び前記冷却管固定工程は、工場で行われ、
    　前記フランジ固定工程は、前記運搬工程のあとに、前記炉壁を有する燃焼炉に前記酸化剤供給管及び前記冷却管を設置する現場で行われる請求項４に記載のバーナの取付方法。     A transporting process for transporting the flange to which the oxidant supply pipe and the cooling pipe are fixed;
    The supply pipe fixing step and the cooling pipe fixing step are performed in a factory,
    The burner mounting method according to claim 4, wherein the flange fixing step is performed at a site where the oxidizing agent supply pipe and the cooling pipe are installed in a combustion furnace having the furnace wall after the carrying step.
PCT/JP2018/004312 2017-02-15 2018-02-08 Burner, gasification furnace provided with burner, and burner attaching method WO2018150991A1 (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
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
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10513252A (en) * 1995-01-23 1998-12-15 テキサコ・デベロップメント・コーポレーション Improved partial oxidation burner with retracted tip and gas blast
JPH1151334A (en) * 1997-07-29 1999-02-26 Chikyu Kankyo Sangyo Gijutsu Kenkyu Kiko Gas burner
JP2009186173A (en) * 2008-02-07 2009-08-20 General Electric Co <Ge> Gasification feed injector and method of modifying cast surface thereof
US20120132725A1 (en) * 2010-11-30 2012-05-31 General Electric Company Fuel injector having tip cooling
US20140157666A1 (en) * 2010-08-11 2014-06-12 General Electric Company Apparatus for removing heat from injection devices and method of assembling same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743194A (en) * 1987-03-13 1988-05-10 Texaco Inc. Cooling system for gasifier burner operating in a high pressure environment
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
CN201628248U (en) * 2010-08-18 2010-11-10 上海神明控制工程有限公司 Split oil gun
JP5705970B2 (en) * 2011-03-31 2015-04-22 三菱日立パワーシステムズ株式会社 Burner, reactor such as gasifier equipped with the same, and power plant equipped with the same
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10513252A (en) * 1995-01-23 1998-12-15 テキサコ・デベロップメント・コーポレーション Improved partial oxidation burner with retracted tip and gas blast
JPH1151334A (en) * 1997-07-29 1999-02-26 Chikyu Kankyo Sangyo Gijutsu Kenkyu Kiko Gas burner
JP2009186173A (en) * 2008-02-07 2009-08-20 General Electric Co <Ge> Gasification feed injector and method of modifying cast surface thereof
US20140157666A1 (en) * 2010-08-11 2014-06-12 General Electric Company Apparatus for removing heat from injection devices and method of assembling same
US20120132725A1 (en) * 2010-11-30 2012-05-31 General Electric Company Fuel injector having tip cooling

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