JP2018169061A - Burner, reaction furnace, and power plant - Google Patents

Abstract

To relax a bending stress by effectively absorbing displacement caused by thermal expansion and to enhance durability by decreasing the weight load resulting from an intermediate pipe member.SOLUTION: A burner 1 comprises a guide cylinder 4 with one end fixed to a furnace body and the other end penetrating a pressure vessel to extend toward the outside of the pressure vessel, and an oxidizer pipe 3 disposed inside the guide cylinder 4. The guide cylinder 4 includes a first cylinder member 41 supported by the furnace body, a second cylinder member 42 supported by the pressure vessel 11, an intermediate cylinder member 43 disposed between the first cylinder member 41 and the second cylinder member 42, outside displacement absorbing members 44 and 45 disposed between the first cylinder member 41 and the intermediate cylinder member 43 and between the intermediate cylinder member 43 and the second cylinder member 42 respectively, and a first connection member 5 and a second connection member 6 connecting the first cylinder member 41 and the intermediate cylinder member 43, and the intermediate cylinder member 43 and the second cylinder member 42 respectively across the outside displacement absorbing members 44 and 45.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a burner, a reaction furnace such as a gasification furnace equipped with the burner, and a power plant equipped with the reaction furnace.

  A reaction furnace such as a gasification furnace provided in a power plant has a pressure vessel and a furnace body provided in the pressure vessel. The reaction furnace is provided with a space called annulus between the pressure vessel and the furnace body to maintain a high pressure state in the reaction furnace. Such a reaction furnace is provided with a burner for feeding a fuel to be burned in the reaction furnace and an oxidant such as air.

  The burner covers the outer periphery of the fuel pipe through which fuel such as pulverized coal is guided by the carrier gas such as nitrogen, and the oxidizer pipe through which an oxidant such as air is guided between the outer periphery of the fuel pipe And a guide tube provided on the outer periphery of the oxidizer tube.

Such a burner is provided such that one end is supported by the reaction furnace and the other end extends from the reaction furnace to the outer peripheral side. One end of the burner is fixed to the side wall of the furnace body, extends from the side wall of the furnace body toward the outer pressure vessel, and penetrates the pressure vessel.
In such a reactor, during operation, both the furnace body and the pressure vessel undergo thermal elongation. Therefore, a difference in thermal elongation occurs between the furnace body and the pressure vessel due to the difference in temperature and material. As a result, a vertical force is applied to the burner from the furnace body and the pressure vessel.

On the other hand, for example, Patent Document 1 discloses a configuration in which a guide tube and an oxidizer tube are provided with a displacement absorbing member made of an expansion that can be bent and expanded and contracted in the axial direction. In this configuration, each of the guide tube and the oxidizer tube includes two displacement absorbing members between a portion fixed to the furnace body and a portion penetrating the pressure vessel.
According to such a configuration, a difference in thermal expansion occurs between the furnace body and the pressure vessel, and when a vertical force is applied to the guide tube or the oxidizer tube from the furnace body or the pressure vessel, the displacement consisting of the expansion The absorbing member bends. Thereby, in the guide tube or the oxidizer tube, bending stress generated in a portion fixed to the furnace body can be relaxed.

International Publication No. 2012/133755 (FIG. 1)

However, as disclosed in Patent Document 1, when the guide tube and the oxidant tube are provided with two displacement absorbing members, the guide tube and the oxidant tube are arranged on the furnace body side with the displacement absorbing member and the pressure. An intermediate pipe member for connecting the two displacement absorbing members to each other is necessary between the container and the displacement absorbing member on the container side. Then, the load of the intermediate tube member acts on each displacement absorbing member.
For this reason, each displacement absorbing member is subjected to stress due to the load of the intermediate tube member in addition to bending due to the difference in thermal elongation generated between the furnace body and the pressure vessel. As a result, the durability of the displacement absorbing member may be reduced. On the other hand, when the strength (rigidity) of the displacement absorbing member is increased in order to resist the load of the intermediate tube member, the displacement absorbing member becomes difficult to bend, and the bending stress acting on the guide tube and the oxidizer tube increases.

  The present invention has been made in view of such circumstances, and absorbs displacement due to thermal elongation to alleviate bending stress, and reduces the load caused by the load on the intermediate pipe member to enhance durability. An object of the present invention is to provide a burner, a reactor, and a power plant that can handle the above.

In order to solve the above problems, the burner, reactor, and power plant of the present invention employ the following means.
The burner according to the present invention is a burner that is disposed through a furnace body and a pressure vessel that is disposed outside the furnace body at an interval, one end being fixed to the furnace body, and the other end being An outer tube that extends through the pressure vessel and extends outward from the pressure vessel; and an inner tube that is disposed inside the outer tube and spaced in the radial direction of the outer tube, The outer tube is disposed between the first outer tube member supported by the furnace body, the second outer tube member supported by the pressure vessel, and the first outer tube member and the second outer tube member. Intermediate outer tube member, outer tube displacement absorbing member provided between the first outer tube member and the intermediate outer tube member, and between the intermediate outer tube member and the second outer tube member, respectively. And a first connecting member that connects the first outer tube member and the intermediate outer tube member across the outer tube displacement absorbing member. The said intermediate outer tube member and the second outer tube member, characterized in that it comprises a and a second coupling member for coupling across the outer tube displacement absorbing member.

  According to the burner according to the present invention, when the first outer tube member and the second outer tube member are relatively displaced due to the difference in thermal elongation generated between the furnace body and the pressure vessel, the outer tube displacement absorbing member is bent and deformed. . The first outer tube member and the intermediate outer tube member are connected by the first connecting member, and the intermediate outer tube member and the second outer tube member are connected by the second connecting member. The load is supported by the first outer tube member and the second outer tube member. Therefore, it becomes difficult for the load of the intermediate outer tube member to reach the outer tube displacement absorbing member. This suppresses obstructing the deformation of the outer tube displacement absorbing member due to the difference in thermal elongation generated between the furnace body and the pressure vessel. Accordingly, bending stress acting on the outer tube can be suppressed.

  In the burner, the inner tube includes a first inner tube member disposed on a radially inner side of the first outer tube member, and a second inner tube member disposed on a radially inner side of the second outer tube member. The intermediate inner pipe member disposed between the first inner pipe member and the second inner pipe member; and between the first inner pipe member and the intermediate inner pipe member; and the intermediate inner pipe member An inner pipe displacement absorbing member provided between the second inner pipe member, an inner peripheral surface of the intermediate outer pipe member, and an outer peripheral surface of the intermediate inner pipe member; It is further preferable to include a support member that supports the load of the member by the intermediate outer tube member.

  According to such a burner, the first inner tube member and the second outer tube member and the second outer tube member are displaced relative to each other due to the difference in thermal elongation generated between the furnace body and the pressure vessel. When the inner tube member is relatively displaced, the inner tube displacement absorbing member is bent and deformed. At this time, the load of the intermediate inner tube member is supported by the intermediate outer tube member via the support member. Therefore, the load on the intermediate inner pipe member is less likely to reach the inner pipe displacement absorbing member. This suppresses inhibiting the deformation deformation of the inner tube displacement absorbing member due to the difference in thermal elongation generated between the furnace body and the pressure vessel. Therefore, bending stress acting on the inner tube can be suppressed.

  In the burner, the first connecting member and the second connecting member are fixed to the first outer tube member or the second outer tube member and the intermediate outer tube member, respectively. It is further preferable to include a second fixing member, and a rotation connecting member that rotatably connects the first fixing member and the second fixing member.

  According to such a burner, when the first outer tube member and the second outer tube member are relatively displaced due to a difference in thermal elongation generated between the furnace main body and the pressure vessel, the first outer tube member or the second outer tube member. The first fixing member fixed to the outer tube member and the second fixing member fixed to the intermediate outer tube member can rotate. Thereby, the load of the intermediate outer tube member can be supported by the first outer tube member and the second outer tube member while preventing the outer tube displacement absorbing member from being hindered from being bent and deformed.

  In the burner, one of the first connecting member and the second connecting member may further be configured such that the rotating connecting member connects the first fixing member and the second fixing member so as to be relatively displaceable in the tube axis direction. Is preferred.

  According to such a burner, relative displacement of the first outer tube member, the intermediate outer tube member, and the second outer tube member so as to expand and contract in the tube axis direction can be permitted.

  A reaction furnace according to the present invention includes the burner as described above, a furnace main body in which a flame generated by the burner is burned, and a pressure vessel disposed at an interval outside the furnace main body. It is characterized by.

  According to the reactor according to the present invention, the load of the intermediate outer tube member constituting the outer tube is supported by the first outer tube member and the second outer tube member. Therefore, it becomes difficult for the load of the intermediate outer tube member to reach the outer tube displacement absorbing member. This suppresses obstructing the deformation of the outer tube displacement absorbing member due to the difference in thermal elongation generated between the furnace body and the pressure vessel. Thereby, the bending stress which acts on an outer tube | pipe can be suppressed.

  A power plant according to the present invention includes the above-described reaction furnace.

  According to the power plant according to the present invention, the load of the intermediate outer tube member constituting the outer tube is supported by the first outer tube member and the second outer tube member. Therefore, it becomes difficult for the load of the intermediate outer tube member to reach the outer tube displacement absorbing member. This suppresses obstructing the deformation of the outer tube displacement absorbing member due to the difference in thermal elongation generated between the furnace body and the pressure vessel. Thereby, the bending stress which acts on an outer tube | pipe can be suppressed.

  According to the burner, the reactor, and the power plant according to the present invention, it is possible to absorb the displacement due to the thermal elongation and relieve the bending stress, and to reduce the load caused by the load of the intermediate pipe member and to enhance the durability. It becomes.

It is a schematic block diagram of the burner provided in the coal gasification furnace of the coal gasification combined cycle power plant concerning one embodiment of the present invention. It is a side view which shows the guide cylinder which comprises the burner of this invention. It is a plane sectional view which shows the guide cylinder which comprises the burner of this invention. It is a figure which shows the support structure by the intermediate cylinder member of the intermediate pipe member of the oxidizing agent pipe | tube of the burner of this invention, and is AA arrow sectional drawing of FIG. It is a perspective view which shows the 1st connection member provided in the guide cylinder of the burner of this invention. It is a figure which shows the 1st connection member and the 2nd connection member which were provided in the guide cylinder of the burner of this invention, and is BB arrow sectional drawing of FIG. It is a perspective view which shows the 2nd connection member provided in the guide cylinder of the burner of this invention.

Hereinafter, an embodiment of a burner, a reactor, and a power plant according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a burner provided in a coal gasification furnace of a combined coal gasification combined power plant according to an embodiment of the present invention.
An integrated coal gasification combined cycle (IGCC) that uses carbon-containing fuel (such as coal) as a fuel mainly comprises a coal gasification furnace (reactor) 10 and a gas turbine (not shown). An exhaust heat recovery boiler (not shown), and a steam turbine (not shown).

  A coal supply facility (not shown) for supplying pulverized coal to the coal gasifier 10 is provided on the upstream side of the coal gasifier 10. This coal supply facility is equipped with a pulverizer (not shown) that pulverizes raw coal into pulverized coal of several μm to several hundred μm. Is transported to the coal gasification furnace 10 together with the transport gas.

  As shown in FIG. 1, the coal gasification furnace 10 includes a furnace main body 12 that is a water-cooled wall, and a pressure vessel 11 that is provided on the outer peripheral side of the furnace main body 12 at an interval. A space 13 called an annulus is formed between the furnace body 12 and the pressure vessel 11. The space 13 is filled with a non-oxidizing gas such as nitrogen gas.

  The burner 1 has one end 1 a fixed to the furnace main body 12, the other end 1 b extending perpendicularly to the side wall of the furnace main body 12 toward the outer peripheral side, penetrating the pressure vessel 11 and outward of the pressure vessel 11. Protrusively provided.

  In order to provide the burner 1 in this way, the furnace body side opening 12a is formed in the side wall of the furnace body 12 so as to penetrate the inside and outside thereof. The furnace body side opening 12a is provided with a seal box 15 made of, for example, SUS and a refractory material.

  Further, a pressure vessel side opening portion 11 a disposed so as to face the furnace body side opening portion 12 a of the furnace body 12 is formed in the pressure vessel 11 provided at an interval on the outer peripheral side of the furnace body 12. Yes. The pressure vessel side opening 11a has a cylindrical shape extending from the side wall of the pressure vessel 11 toward the outer peripheral side, and a flange 11b is integrally formed at the outer peripheral side end thereof. A holding cylinder 16 is connected to the flange 11b of the pressure vessel side opening 11a. The holding cylinder 16 has a cylindrical shape extending from the pressure vessel 11 to the outer peripheral side, and a flange 16a formed at one end thereof is connected to the flange 11b of the pressure vessel side opening 11a. A flange 16 b is also formed at the other end of the holding cylinder 16.

  The burner 1 is substantially concentric with the fuel pipe 2, the oxidant pipe (inner pipe) 3 that is substantially concentric with the fuel pipe 2 and covers the outer periphery of the fuel pipe 2, and the fuel pipe 2 and the oxidant pipe 3. And a guide tube (outer tube) 4 covering the outer periphery of the oxidizer tube 3.

  The fuel pipe 2 is a pipe through which pulverized fuel such as pulverized coal conveyed by nitrogen or the like is guided. One end 2a of the fuel pipe 2 extends into the furnace body 12 through a seal box 15 provided in the furnace body side opening 12a. The other end 2b of the fuel pipe 2 is connected to a pulverized fuel transport pipe (not shown) that transports fuel such as pulverized coal from the pulverizer.

The oxidant pipe 3 covers the outer periphery of the fuel pipe 2 and has an outer dimension larger than that of the fuel pipe 2. One end 3 a of the oxidizer tube 3 extends through the seal box 15 into the furnace body 12. One end 3 a side of the oxidizer tube 3 is inserted into a cylindrical support sleeve 20 formed in the seal box 15. On one end 3 a side of the oxidizer tube 3, a connection flange 21 provided on the outer peripheral surface of the oxidizer tube 3 is fastened to the support sleeve 20 by a bolt / nut 22 or the like. Thereby, the one end 3 a side of the oxidizer tube 3 is fixed to the furnace body 12 via the support sleeve 20 and the seal box 15.
A flange member 23 is provided at the other end 3 b of the oxidizer tube 3. The other end 2 b side of the fuel pipe 2 is inserted through the flange member 23.

  An oxidant introduction pipe 24 is connected to the side wall on the other end 3 b side of the oxidant pipe 3. For example, air that is an oxidant is introduced into the oxidant pipe 3 from an oxidant supply source (not shown) connected to the oxidant introduction pipe 24 between the inner wall and the outer wall of the fuel pipe 2.

The guide cylinder 4 covers the outer periphery of the oxidizer tube 3 and has an outer dimension larger than that of the oxidizer tube 3. The guide tube 4 has an oxidizer tube 3 and a fuel tube 2 inserted therethrough.
One end 4 a of the guide tube 4 is fixed to the seal box 15. The guide cylinder 4 has a joint sleeve 26 at the other end 4b. The joint sleeve 26 has a cylindrical shape continuous with the guide cylinder 4 and includes a first flange 26a and a second flange 26b. The first flange 26 a is connected to face the connection flange 25 provided on the other end 3 b side of the oxidizer tube 3. Thereby, the other end 3 b side of the oxidizer tube 3 is supported by the guide tube 4.
The second flange 26 b is connected to face the flange 16 b of the holding cylinder 16 connected to the pressure vessel side opening 11 a of the pressure vessel 11. Thereby, the other end 4 b side of the guide cylinder 4 is supported by the pressure vessel 11 through the joint sleeve 26 and the holding cylinder 16.

  A non-oxidizing gas introduction pipe 27 is connected to the joint sleeve 26. The non-oxidizing gas introduction pipe 27 feeds the non-oxidizing gas into the space between the inner wall of the guide cylinder 4 and the outer wall of the oxidant pipe 3. Here, the non-oxidizing gas fed in is, for example, nitrogen gas.

  As shown in FIGS. 2 and 3, the guide tube 4 includes a first tube member (first outer tube member) 41 supported by the furnace body 12 and a second tube member (second tube) supported by the pressure vessel 11. And an intermediate cylinder member (intermediate outer pipe member) 43 disposed between the first cylinder member 41 and the second cylinder member 42. The first cylinder member 41, the second cylinder member 42, and the intermediate cylinder member 43 are each made of a metal tube.

  Further, the guide cylinder 4 includes an outer displacement absorbing member (outer tube displacement absorbing member) 44 provided between the first cylinder member 41 and the intermediate cylinder member 43, and the intermediate cylinder member 43 and the second cylinder member 42. And an outer displacement absorbing member (outer tube displacement absorbing member) 45 provided therebetween. These outer displacement absorbing members 44 and 45 are each made of a bellows-like bellows. These outer displacement absorbing members 44 and 45 bend and deform when the first cylinder member 41 and the second cylinder member 42 are relatively displaced due to a difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11. Thus, relative displacement between the first cylinder member 41 and the second cylinder member 42 is allowed.

  As shown in FIG. 3, the oxidizer tube 3 disposed inside the guide tube 4 with a gap in the radial direction of the guide tube 4 includes a first tube member (first inner tube member) 31 and a second tube member. A tube member (second inner tube member) 32, an intermediate tube member (intermediate inner tube member) 33, and inner displacement absorbing members (inner tube displacement absorbing members) 34 and 35 are provided. The first tube member 31, the second tube member 32, and the intermediate tube member 33 are each made of a metal tube.

  The first tube member 31 is disposed on the radially inner side of the first tube member 41, and the second tube member 32 is disposed on the radially inner side of the second tube member 42. The intermediate tube member 33 is disposed between the first tube member 31 and the second tube member 32, and is disposed on the radially inner side of the intermediate tube member 43.

  The inner displacement absorbing member 34 is provided between the first tube member 31 and the intermediate tube member 33. The inner displacement absorbing member 35 is provided between the intermediate tube member 33 and the second tube member 32. These inner displacement absorbing members 34 and 35 are made of bellows bellows. These inner displacement absorbing members 34 and 35 are bent and deformed when the first tube member 31 and the second tube member 32 are relatively displaced due to a difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11. The relative displacement between the first pipe member 31 and the second pipe member 32 is allowed.

  As shown in FIGS. 3 and 4, a support member 7 is provided between the inner peripheral surface of the intermediate cylinder member 43 and the outer peripheral surface of the intermediate tube member 33. A plurality of support members 7 (two in the example of FIG. 4) are provided between the inner peripheral surface of the intermediate cylinder member 43 and the outer peripheral surface of the intermediate tube member 33 with an interval in the circumferential direction. These support members 7 cause the intermediate tube member 43 to support the load of the intermediate tube member 33.

  As shown in FIGS. 2, 3, and 5, in the guide tube 4 as described above, the first tube member 41 and the intermediate tube member 43 are connected by the first connecting member 5. The first connecting members 5 are provided on both sides of the guide cylinder 4 in the horizontal direction. Each first connecting member 5 connects the first cylinder member 41 and the intermediate cylinder member 43 across the outer displacement absorbing member 44. The first connecting member 5 includes a first fixing member 51 fixed to the first cylinder member 41, a second fixing member 52 fixed to the intermediate cylinder member 43, a first fixing member 51, and a second fixing member 52. And a pivotal connection member 53 that pivotably couples the two.

As shown in FIG. 5, the first fixing member 51 includes a base portion 51a welded to the first tubular member 41, a plate portion 51b extending from the base portion 51a along the tube axis direction to the intermediate tubular member 43 side, Is integrated.
The second fixing member 52 is integrally provided with a base portion 52a welded to the intermediate cylindrical member 43 and a plate portion 52b extending from the base portion 52a toward the first cylindrical member 41 along the tube axis direction. As shown in FIG. 6, the plate portion 51b of the first fixing member 51 and the plate portion 52b of the second fixing member 52 are partially overlapped with each other in the tube axis direction.

The rotation connecting member 53 includes a pin 53p that penetrates the plate portion 51b of the first fixing member 51 and the plate portion 52b of the second fixing member 52 that overlap each other in the horizontal direction. Thereby, the 1st fixing member 51 and the 2nd fixing member 52 are connected so that rotation around the pin 53p is possible.
As shown in FIG. 5, at least one of the plate portion 51 b of the first fixing member 51 and the plate portion 52 b of the second fixing member 52 is formed with a long hole 54 extending in the tube axis direction. The pin 53p is inserted through the long hole 54. The first fixing member 51 and the second fixing member 52 are connected so as to be relatively displaceable along the tube axis direction by moving the pin 53p along the long hole 54.
Thus, the 1st cylinder member 41 and the intermediate cylinder member 43 are connected so that rotation is possible and relative displacement is possible along a pipe-axis direction.

  As shown in FIGS. 2, 3, and 7, in the guide cylinder 4, the second cylinder member 42 and the intermediate cylinder member 43 are connected by a second connecting member 6. The second connecting members 6 are provided on both sides of the guide cylinder 4 in the horizontal direction. The second connecting member 6 connects the second cylinder member 42 and the intermediate cylinder member 43 across the outer displacement absorbing member 45. The second connecting member 6 includes a first fixing member 61 fixed to the second cylinder member 42, a second fixing member 62 fixed to the intermediate cylinder member 43, a first fixing member 61, and a second fixing member 62. And a rotation connecting member 63 that rotatably connects the two.

The first fixing member 61 integrally includes a base portion 61a welded to the second cylinder member 42 and a plate portion 61b extending from the base portion 61a toward the intermediate cylinder member 43 along the tube axis direction.
The second fixing member 62 is integrally provided with a base portion 62a welded to the intermediate cylinder member 43 and a plate portion 62b extending from the base portion 62a toward the second cylinder member 42 along the tube axis direction. As shown in FIG. 6, the plate portion 61 b of the first fixing member 61 and the plate portion 62 b of the second fixing member 62 partially overlap each other in the tube axis direction.

  The rotation connecting member 63 includes a pin 63p that penetrates the plate portion 61b of the first fixing member 61 and the plate portion 62b of the second fixing member 62 that overlap each other in the horizontal direction. The first fixing member 61 and the second fixing member 62 are connected so as to be rotatable around the pin 63p. Thereby, the 2nd cylinder member 42 and the intermediate | middle cylinder member 43 are connected so that rotation is possible.

Next, the state of stress applied to the burner 1 when the power plant is operated will be described.
When the power plant (not shown) is operated, thermal expansion occurs in the furnace main body 12 and the pressure vessel 11 of the coal gasification furnace 10. Due to the thermal elongation generated in the furnace body 12 and the pressure vessel 11, a difference in thermal elongation due to the difference in material and temperature between the furnace body 12 and the pressure vessel 11 occurs. Therefore, the burner 1 inserted from the outside of the pressure vessel 11 into the furnace main body 12 has a portion supported by the furnace main body 12 and a portion supported by the pressure vessel 11 in the vertical direction or coal gasification. A relative displacement in the radial direction of the furnace 10 occurs.

  Accordingly, in the guide cylinder 4, when the first cylinder member 41 and the second cylinder member 42 are relatively displaced, the outer displacement absorbing members 44 and 45 are bent and deformed. At this time, the first cylinder member 41 and the intermediate cylinder member 43 are connected by the first connecting member 5, and the intermediate cylinder member 43 and the second cylinder member 42 are connected by the second connecting member 6. Thereby, the load of the intermediate cylinder member 43 is supported by the first cylinder member 41 and the second cylinder member 42. Therefore, the load of the intermediate cylinder member 43 is less likely to reach the outer displacement absorbing members 44 and 45. This suppresses the deformation of the outer displacement absorbing members 44 and 45 caused by the difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11 from being hindered by the load of the intermediate cylinder member 43.

  Further, in the oxidizer tube 3 arranged inside the guide tube 4, the first tube member 31 is displaced together with the first tube member 41 due to a difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11, The second pipe member 32 is displaced together with the second cylinder member 42. Thereby, the first pipe member 31 and the second pipe member 32 are relatively displaced. Then, the inner displacement absorbing members 34 and 35 are bent and deformed. At this time, the load of the intermediate tube member 33 is supported by the intermediate cylinder member 43 via the support member 7. That is, the load of the intermediate tube member 33 is supported by the first tube member 41 and the second tube member 42 via the intermediate tube member 43, the first connecting member 5 and the second connecting member 6. Therefore, the load on the intermediate pipe member 33 is less likely to reach the inner displacement absorbing members 34 and 35. Accordingly, it is possible to suppress the bending deformation of the inner displacement absorbing members 34 and 35 due to the difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11.

Moreover, when the 1st cylinder member 41 and the 2nd cylinder member 42 are displaced relatively, the 1st fixing member 51,61 of the 1st connection member 5, the 2nd connection member 6, and the 2nd fixing member 52,62, However, it rotates via the pins 53p and 63p. As a result, the first connecting member 5 and the second connecting member 6 can suppress the deformation of the outer displacement absorbing members 44 and 45 and the inner displacement absorbing members 34 and 35 from being hindered.
Further, the first connecting member 5 is configured such that the first fixing member 51 and the second fixing member 52 are relatively displaced in the tube axis direction by the pin 53p, so that the tube shaft of the first tube member 41 and the intermediate tube member 43 is Allow relative displacement in direction. That is, this allows the guide tube 4 and the oxidizer tube 3 to expand and contract in the tube axis direction.

  According to the burner 1, the coal gasifier 10, and the power plant as described above, the first cylinder member 41 and the intermediate cylinder member 43 of the guide cylinder 4 are connected by the first connecting member 5, and the intermediate cylinder member 43 and the first cylinder member 43 are connected to each other. The two cylinder members 42 are connected by the second connecting member 6. Thereby, the load of the intermediate cylinder member 43 is supported by the first cylinder member 41 and the second cylinder member 42. Therefore, the load of the intermediate cylinder member 43 is less likely to reach the outer displacement absorbing members 44 and 45. Accordingly, it is possible to suppress obstructing the bending deformation of the outer displacement absorbing members 44 and 45 due to the difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11. Thereby, the bending stress which acts on the guide cylinder 4 can be suppressed.

The load of the intermediate tube member 33 of the oxidizer tube 3 is supported by the intermediate cylinder member 43 via the support member 7. Therefore, the load on the intermediate pipe member 33 is less likely to reach the inner displacement absorbing members 34 and 35. Accordingly, it is possible to suppress the bending deformation of the inner displacement absorbing members 34 and 35 due to the difference in thermal elongation generated between the furnace body 12 and the pressure vessel 11. Thereby, the bending stress which acts on the oxidizer tube 3 can be suppressed.
In this manner, the displacement due to the thermal elongation of the guide tube 4 and the oxidizer tube 3 is satisfactorily absorbed to reduce the bending stress, and the load due to the load on the intermediate tube member 43 and the intermediate tube member 33 is reduced. It becomes possible to improve the durability of.

  The first connecting member 5 and the second connecting member 6 are the first fixing members 51 and 61 fixed to the first cylinder member 41 or the second cylinder member 42 and the second fixing fixed to the intermediate cylinder member 43. The members 52 and 62 rotate. Thereby, the load of the intermediate cylinder member 43 can be supported by the first cylinder member 41 and the second cylinder member 42 while suppressing the outer displacement absorbing members 44 and 45 from being hindered from being bent and deformed.

  Further, the first connecting member 5 has the rotating connecting member 53 that connects the first fixing member 51 and the second fixing member 52 so as to be relatively displaceable in the tube axis direction. 3 can be allowed to be relatively displaced so as to expand and contract in the tube axis direction.

  In addition, in the said embodiment, although the support structure by the furnace main body 12 and the pressure vessel 11 of the guide cylinder 4, the oxidizer pipe | tube 3, and the fuel pipe | tube 2 which comprise the burner 1 was shown, these are only examples and change suitably. It is possible.

1 Burner 3 Oxidant pipe (inner pipe)
4 Guide tube (outer tube)
4a one end 4b other end 5 first connecting member 6 second connecting member 7 support member 10 coal gasification furnace (reactor)
11 Pressure vessel 12 Furnace body 31 First pipe member (first inner pipe member)
32 Second pipe member (second inner pipe member)
33 Intermediate pipe member (intermediate inner pipe member)
34, 35 Inner displacement absorbing member (inner tube displacement absorbing member)
41 First cylinder member (first outer tube member)
42 Second cylinder member (second outer tube member)
43 Intermediate tube member (intermediate outer tube member)
44, 45 Outer displacement absorbing member (outer tube displacement absorbing member)
51, 61 First fixing members 51a, 52a, 61a, 62a Base portions 51b, 52b, 61b, 62b Plate portions 52, 62 Second fixing members 53, 63 Rotating connecting members 53p, 63p Pins

Claims (6)

A burner disposed through a furnace body, and a pressure vessel disposed at an interval outside the furnace body,
An outer tube having one end fixed to the furnace body and the other end extending through the pressure vessel toward the outside of the pressure vessel;
An inner tube disposed inside the outer tube with a space in the radial direction of the outer tube, and
The outer tube is
A first outer tube member supported by the furnace body;
A second outer tube member supported by the pressure vessel;
An intermediate outer tube member disposed between the first outer tube member and the second outer tube member;
An outer tube displacement absorbing member provided between the first outer tube member and the intermediate outer tube member, and between the intermediate outer tube member and the second outer tube member;
A first connecting member that connects the first outer tube member and the intermediate outer tube member across the outer tube displacement absorbing member;
A second connecting member for connecting the intermediate outer tube member and the second outer tube member across the outer tube displacement absorbing member;
A burner characterized by comprising. The inner tube is
A first inner tube member disposed radially inward of the first outer tube member;
A second inner tube member disposed radially inward of the second outer tube member;
An intermediate inner pipe member disposed between the first inner pipe member and the second inner pipe member;
An inner pipe displacement absorbing member provided between the first inner pipe member and the intermediate inner pipe member, and between the intermediate inner pipe member and the second inner pipe member;
A support member provided between an inner peripheral surface of the intermediate outer tube member and an outer peripheral surface of the intermediate inner tube member, and supporting a load of the intermediate inner tube member by the intermediate outer tube member;
The burner according to claim 1, comprising: The first connecting member and the second connecting member are respectively
A first fixing member fixed to the first outer tube member or the second outer tube member;
A second fixing member fixed to the intermediate outer tube member;
A rotation connecting member that rotatably connects the first fixing member and the second fixing member;
The burner according to claim 1 or 2, further comprising: One of the first connecting member and the second connecting member is
The burner according to claim 3, wherein the rotation connecting member connects the first fixing member and the second fixing member so as to be relatively displaceable in the tube axis direction. The burner according to any one of claims 1 to 4,
A furnace body in which a flame generated by the burner is burned;
A pressure vessel arranged at a distance from the outside of the furnace body;
A reactor comprising:   A power plant comprising the reactor according to claim 5.

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