CN209507087U - A kind of equipment for fluidizing Solid Conveying and Melting and a kind of gasification burner tip - Google Patents

Abstract

The utility model is the equipment and a kind of gasification burner tip about a kind of for fluidizing Solid Conveying and Melting, the equipment will be for that will fluidize solid, fluid especially for will be made of coal dust and conveying gas, it is transported among circular passage, there is a feed pipe to be inserted in its annular passage from radial direction, in this manner, the length direction central axes extended line of feed pipe intersects with the longitudinal axis of circular passage.The shortcomings that the purpose of this utility model is to provide the solution that a kind of coal dust conveys vaporized burner, solves the disadvantage that coal dust tangential admission in mechanical aspects, avoids abrasion and known radial intermediate feed pipeline jet stream.This purpose is realized by following measures, a replaceable pipeline section, is removably installed in the position of radial inlet in the enterprising expects pipe in circular passage, forms an integrated solid flow channel, and for preventing the impact in abrasion damage and conveying.

Description

A kind of equipment for fluidizing Solid Conveying and Melting and a kind of gasification burner tip

Technical field

It is especially by the fluid conveying of coal dust and conveying gas composition extremely the utility model relates to a kind of about fluidisation solid The equipment of circular passage, wherein there is a feed pipe to be inserted in circular passage from radial direction, in this manner, into The longitudinal axis extended line of expects pipe intersects with the longitudinal axis of circular passage.

The utility model further relates to a kind of gasification burner tip including such equipment composition.

Background technique

In chemical engineering technology, solid is crushed the particle for dust size and strength passes by way of conveying gas It is defeated.This powdery fluid can cause problem if discontinuous in full transmission path, such as when powdery fluid is needed from straight To transformation flow path angle when, or when fluid needs become several strands from one, or when fluid needs from several strands to become one When stock.Further, since the corrasion of solid is in baffle surface, or since vortex action is in long bend, corner, aperture or contracting The blocking that the positions such as small bore generate, will lead to the failure of conveying equipment, or at least will lead to the inhomogeneities of solid transmission from The destruction of face solids treatment.

There is a typical example application in coal gasification field.In order to produce synthesis gas, raw coal must be crushed, dry and Strength is transmitted at the gasification burner tip of gasification furnace, when that partial oxidation takes place with oxygen when flame region mixes is anti-for coal dust It answers.Gasification burner tip mainly be made of several concentric pipes, pipe way formed circular passage in pumped (conveying) medium, coal dust and Oxygen to occur gasification reaction burner head.

The fluid of coal dust and inert gas can enter dedicated burning from burner medium feed lines axial, radially or tangentially Mouth channel.Common solution is one feeding line of setting beside gasification burner tip, and the direction of coal dust fluid is from radial side To the axial direction for changing to burner channel.

A kind of lateral coal dust feeding manner is disclosed in 10 2,014 104 232 A1 of patent DE, passes through setting one Coal dust fluid is sent into burner circular passage by the rectangle feeding-passage connecting with the aperture of burner circular passage with rotating path. To which some turbulent flows can be easily formed in entrance.One distributor for having some funnel-shaped recesses is set below import, For by solid along circular passage circumferential direction mean allocation.Each groove is circumferentially arranged along what coal dust axially exported.Often A outlet is connected in a circular passage axial coal dust channel, and it is logical that the sum of sectional area of these coal dust channels is equal to coal dust charging The sectional area in road.

However, the shortcomings that this solution has, manufacture is complicated, additionally radially fixed and the rectangle that need to feed coal dust Adapter tube is installed in the tangential aperture of burner body.Further, since import is arranged in the side of burner and its rectangular shape, meeting It is limited by design pressure.

The simplified design for thering are several known methods to be used to be easy to connect with burner by lateral feeding line.For center into The mode of material, the axis of feed pipe and the axis of circular passage are placed in approximately the same plane, they cross one another.

From side, the radially fed mode to center has its disadvantage, because of the flow characteristics of process flows, when it is almost It will cause serious abrasion when directly impinging circular passage inner wall, and can be bonded on conduit wall, when not solving accordingly It will cause import blocking when method.Therefore, when using aforesaid way charging, it is necessary to suitable method is used, continuously to change Become the direction that process flows enter circular passage.

A kind of circular passage burner of coal dust firing is disclosed in patent DE-PS 508 590, it is characterised in that Be provided with bowguide in the channel of one deviation, by radially into coal dust shunt and the entire annular of importing that coal is averaged is logical In the section in road.The disadvantage is that causing burner to be quickly invalidated due to acting on the abrasion on guide plate and central tube.

In 288 305 A7 of patent DD, a kind of coal dust burner is disclosed, it is characterised in that annular is provided in channel The thermal-protective coating of cover shape protects radially fed oxygen fluid, and the preheated oxygen come radial is deflected to tangential flow direction, And it is sent to corresponding circular passage.These thermal-protective coatings are not particularly suited for the abrasion stress generated by coal dust fluid.

In 206 695120 U of patent CN, the logical of diffusing-splitting concepts and not no guide plate is used in an example Road is applied to coal dust fluid.In order to guarantee better wear-resisting property, proposes and taken over using a big concentric circles tubular, it is right In the flow path for being placed in coal dust fluid in rather than use circular thin-wall channel.

In 35 41 615 A1 of patent DE, the method for carrying out disperse particulate fuel using wear-resistant baffle plate is disclosed.In burner Head center, one axial centre fuel fluid vertical direction toward impact form the pulverized coal flow dispersed outward, then on baffle Into the external spray ring installed of an axial direction.Since the small-sized and coal dust of dispensing passage disperses twice, have very high stifled Fill in risk.

Utility model content

One purpose of the utility model is to provide the solution that a kind of coal dust conveys vaporized burner, solves above-mentioned Tangential fuel-feed mechanical aspects disadvantage, avoid abrasion and known radially fed pipeline jet stream disadvantage.

The utility model is to reach its purpose, and the technical solution provided is as follows:

A kind of equipment for fluidizing Solid Conveying and Melting, the equipment are used for the fluid (19) that will be made of coal dust and conveying gas It is transported to circular passage (1), wherein feed pipe (2) is from being inserted radially into the extension for making feed pipe (2) longitudinal axis in circular passage Line intersects with the longitudinal axis of circular passage (1), and pipeline section (4) is removably inserted into the circular passage in feed pipe (2) import (3) region (1) in, one is formd for by coal dust and the integrated runner (5) for conveying the fluid (19) that gas forms.

Further, pipeline section (4) is filled in the cross section of circular passage (1), and pipeline section (4) has the runner of a rectangular section (5), runner (5) is to external outs open, including two straight and parallel flow channel sections (6) and an arcuate flow path section (7), arcuate flow path section (7) along pipeline section (4) circumferential skewing and connect two straight channel sections (6) so that flow channel section (6), (7) group At the runner (5) of a U-shaped, wherein

- two straight channel sections (6) are located in pipeline section (4),

It diametrically arranges and parallel with the longitudinal axis of circular passage (1),

On pipeline section (4) flow direction into circular passage (1) front end (8) at aperture and,

At least closed in the outer end for entering the inlet of circular passage (1),

Feed pipe (2) enters in the middle part of arcuate flow path section (7), and wherein arcuate flow path section (7) is at least at import (3) It is open to outside,

The flow area of U-shaped runner (5) is equal to the half of feed pipe (2) flow area.

In some embodiments, pipeline section (4) in the runner (5) of feed pipe (2) import (3) face position be equipped with one Porous sintered metal plug-in unit (10), and constitute purging air flue and concordant with the basic holding of runner (5).

In some embodiments, pipeline section (4) in the runner (5) of feed pipe (2) import (3) face position be equipped with one Porous sintered metal attachment (11), and a purging air flue is constituted, porous sintered metal attachment (11) is set as logical with annular Half parallel tube socket of the longitudinal axis in road (1).

In some embodiments, sintering metal plug-in unit (10) or be at it back to runner around the characteristics of knot metal-ware (11) (5) there is a purging air flue (12) on the inside of.

Preferably, the purge gass (18) purged in air flue (12) are supplied to ring by the purge line (13) of an axial direction With conveying solid substance in shape channel (1).

In some embodiments, the pipeline section (4) being located in runner (5), in the position for facing feed pipe (2) import (3) It sets, a wear-resisting hard metal or ceramic insert (16) or a hard metal or ceramic annex (17) is installed.

In some embodiments, hard metal or ceramic annex (17) are the prismatic current divider of triangle as a section (9) it uses.

In some embodiments, in addition for conveying the purging stomatas (15) of purge gass (18), be made of sintering metal Disk (26) covering thereon, the excurvation tune for being set to arcuate flow path section (7) of purging stomata (15) axial flat shape mutually (14) in.

In some embodiments, in addition for conveying the purging stomatas (15) of purge gass (18), be made of sintering metal Disk (26) covering thereon, the excurvation tune for being set to arcuate flow path section (7) of purging stomata (15) axial flat shape mutually (14) it in, and is combined with the wear-resisting hard metal or ceramic insert (16).

The utility model also provides a kind of gasification burner tip for by pulverized coal preparation synthesis gas, including use described above In the equipment that coal dust is transported to burner head, wherein using inert gas such as nitrogen or carbon dioxide as conveying gas and purging Gas.

The purpose of this utility model is realized by equipment as described above or gasification burner tip described above.

The specific example of this equipment is the sub-ranges of claim 2 to 8.

The utility model device is used for solids fluidized charging, especially coal dust, it is characterised in that a replaceable pipeline section, It is removably installed in the position of the radial inlet of the enterprising expects pipe in circular passage, has one to lead to for the flowing of integrated solid Road, and abrasion is protecteded from the feeding-in solid body of circular passage.

First advantage of the scheme is the modularized design of feeding-in solid body pipeline, is simplified in maintenance, maintenance phase Abrasive element feasibility and replaceability.

Second, the charging adapter tube of a radially installed provides better mechanical strength so as to allow higher design to press Power.In addition, tangential coal dust charging is completely eliminated the abrasion risk of pressure-resistant outer wall.

Third advantage is the design of new replaceable, adjustable pipeline section with integrated runner, on the one hand available The current divider and baffle for making process flows, on the other hand play protection circular passage from abrasion and with other known scheme phase Than the characteristic for optimizing jet stream.

, due to reducing the size in circumferential gap and the shape of straight channel, greatly reduce the risk of abrasion at 4th point. Wear-resisting baffle and guide plate especially are used in abrasion region of stress concentration simultaneously.

Therefore, the solution improves the operating reliability and safety at device scene.

The pipeline section for fluidizing solid with integrated runner is particularly suitable for preparing the air flow bed of synthesis gas The coal dust gasification burner of reactor.

Detailed description of the invention

The utility model will be described in detail by taking specific gasification burner tip as an example below.The solution is also applied for it The case where its process flows enter transfer passage from lateral access.

Fig. 1: the radially fed pipe in gasification burner tip；

Fig. 2: feed pipe is in gasification burner tip entrance sectional view；

Fig. 3: the 3-D view of pipeline section most simplified example；

Fig. 4: the insertion piece of purge gas or the pipe of attachment are used for simultaneously overpunch is made by ceramics or sintering metal The side view of section；

Fig. 5: the cross section of the pipeline section with sintering metal insertion piece；

Fig. 6: the cross section of the pipeline section with sintering metal attachment；

Fig. 7: the cross section of the pipeline section with hard metal or cermet inserts；

Fig. 8: the cross section of the pipeline section with hard metal or ceramic annex；

Fig. 9: the pipeline section cross section with current divider.

Specific embodiment

In order to better understand the technical solution of the utility model, the utility model is further described below with reference to embodiment Content, but the content of the utility model is not limited only to following embodiment.

One gasification burner tip is mainly made of several pipes being concentrically arranged, and the circular passage formed will be burnt from gasification Mouth external agency inlet side and the medium come is transported to burner head, burner head extends to inside reaction chamber and generates flame. In order to establish gasification reaction, a kind of carbon-containing fuel, preferably coal dust are at least needed；Further need exist for oxygen.Correspondingly gasification burner tip Figure illustrates only 1 coal channel and 1 oxygen channel.There can also be more circular passages, but they will not consolidate described Body feeding manner has a significant impact.

Coal dust carries out fluidisation preferably by nitrogen or carbon dioxide and is combined into one stream with a kind of solid and carrying gas group The mode of body is fed, and oxygen be usually with oxygen or with steam mixed feeding.

Fig. 1 shows in gasification burner tip in a part of coal dust fluid entry zone.One feed pipe 2 is from coal dust delivery pipe The connecting flange of line starts, in gasification burner tip radial center aperture, so that the longitudinal axis extended line of feed pipe 2 and gasification burner tip Central longitudinal axis (central axes) intersection, this is also the longitudinal axis for the circular passage 1 of coal dust conveying simultaneously.2 direction of feed pipe The tilt angle of central axes can be 15 ° to 90 °.

As shown in Fig. 2, the gasification burner tip in this region includes outer tube 21 and inner tube 22, the circular passage formed between two pipes 1 for being delivered to burner head for coal dust.Above and below feed pipe 2, two flanges 23 are respectively provided with for connecting The outer tube 21 of circular passage 1.Inner tube 22 passes through lower end flanges 23 and extends to upper flanges 23, and concordant with flange face holding. One oxygen-containing gas is delivered to burner head by center in inner tube 22.

In circular passage 1, pipeline section 4 equipped with one with the integrated runner 5 for coal dust fluid, pipeline section 4 it is outer Diameter is identical as the internal diameter of circular passage 1, and pipeline section 4 is filled in the cross section of circular passage 1, and is mounted on 2 import of feed pipe, 3rd area Domain.The dimensional tolerance of the inside and outside diameter of pipeline section is designed to that when assembling gasification burner tip pipeline section 4 can be inserted into circular passage.Pipeline section 4 Through the casing 20 between lower flange 23 and top locating flange 24 detachably but in a manner of axially not allowing to rotate It is supported.

As shown in figure 3, pipeline section 4 is characterized in runner 5, outside fractional open and there is preferably rectangular section, wraps Two straight and parallel flow channel sections 6 and an arcuate flow path section 7 in circumferential skewing are included, arcuate flow path section 7 connects straight channel Section 6, so that flow channel section 6,7 together forms the runner 5 of a U-shaped.Preferably, 6 radial symmetric of flow channel section is arranged simultaneously in pipeline section 4 It is parallel with length direction axis (longitudinal axis) of circular passage 1.Channel section is logical along annular is flowed on the lower end surface of pipeline section 48 The direction aperture in road 1.6 outer end of flow channel section closing, at least with the axial aperture of circular passage 1 at be so, it may be said that it Be under the surface of pipeline section 4.The axial coal dust channel 25 connecting with a fine gap will have the runner of constant cross-section 5 extend at burner head.Such as 10 2,014 104 232 A1 of patent DE description, it can be by the way that U fashioned iron be welded to Coal dust channel 25 is constituted in inner tube 22.

Feed pipe 2 protrudes into the centre of arcuate flow path section 7.Therefore at least at import 3, arcuate flow path section 7 is outside aperture 's.

The flow area of U-shaped runner 5 is equal to the half of 2 flow area of feed pipe.

In order to reduce the abrasion of the runner at import 3, further improvement is done to pipeline section 4, has been equipped in runner 5 porous Sintering metal plug-in unit 10 is installed on the position for facing 2 import 3 of feed pipe, as shown in Fig. 4, Fig. 5, constitutes a purging Air flue simultaneously keeps concordant with the shape of runner 5 substantially.

A kind of alternate example as shown in Figure 4 and Figure 6, the pipeline section 4 in runner 5, which has one, can allow purge gass Porous sintered metal attachment 11 constitutes half tube socket parallel with the longitudinal axis of circular passage 1, is mounted on and faces charging The position of 2 import 3 of pipe.

Sintering metal plug-in unit 10 (Fig. 5) is characterized in around knot metal-ware 11 (Fig. 6), at it back to the inside of runner 5, There is a purging air flue 12 in pipeline section 4, wherein normal pressure of the purge gass 18 to be higher than in circular passage 1, preferably passes through one The axial purging air flue 12 for blowing gear 13 (not shown) of gas pipeline and being transported in circular passage 1.

Sintering metal plug-in unit 10 and around knot metal-ware 11 be it is detachable, be removably connected on pipeline section 4.Such as it is radial Sintering metal body is connected in channel matrix by the bolt connection of arrangement.Because sintering metal attachment 11 is mounted on arch Inside flow channel section 7, the above and below in channel determines the top/bottom latitude of purging air flue 12.

Wear-resisting hard metal or ceramic insert 16 (Fig. 4 and Fig. 7) can be used replace can the sintering metals of purge gass be inserted into The position of face import 3 in runner 5.Similar with sintering metal, hard metal or ceramic member can be bolt-connected to the base of pipeline section 4 On body.

Such as Fig. 9, if wear-resisting attachment design is the appearance for the prismatic current divider 9 that a section is triangle, wherein one A sharp edge such as figure faces import 3, and the fluid being made of conveying gas 19 and coal dust can be divided into two plumes when entering runner Simultaneously water conservancy diversion is to axial coal dust channel 25 for body, without generating many turbulent flows.

As the alternative of above-mentioned several method, by coal dust fluid inlet by the pipeline section material 4 in erosive effects region Hardening is also applicable, and in this case, current divider 9 is preferably taken as a part of pipeline section 4 to use.

Pipeline section 4 can be manufactured by the way that cylinder-shaped body part drills or be manufactured by laser melting method (SLM).

In addition for above-mentioned method or the method for combining Wear-proof, deposition of the coal dust in arcuate flow path section 7 can be with It is covered in above by independent one, with burner metal dish or sintering metal plug-in unit (not shown), is bored on disk or plug-in unit There is purging stomata 15, conveying purge gass 18 prevent the coal dust inertial deposition in arcuate flow path section 7 to excurvation tune 14.

If the equipment of the utility model is to prepare synthesis gas by pulverized coal conveying to gasification burner tip and with coal dust, can With with a kind of dry indifferent gas come the nitrogen or carbon dioxide as purge gass, such as under gas desired temperature conditions.

As noted earlier, until the design of the feeding-in solid body pipeline of circular passage 1 can advanced optimize.Such as arcuate flow path Section 7 can widen to the direction of channel two sides straight channel section 6, terminate at four channel apertures, thus by including coal powder distribation In four coal dust channels 25 arranged in the circumferential direction of pipe 22.Supplying stronger purge gass by enlarged cross section can guarantee one Constant flow velocity.

Furthermore, it in order to assemble more easily, also provides with the pipeline section 4 for preventing rotating device (such as cylinder bolt), more has Conducive to installation.

In view of jet stream factor, the cross-sectional dimension consecutive variations or localized variation of runner 5 are all advantageous.

Manufacturing tolerance and thermal expansion deviation can be by adjusting the flexible seal systems at flange 23 and/or mounting flange 24 It compensates, by this method the medium channel of carbon and oxygen reliably can be mutually mutually separated.

The operational mode of the utility model device:

The fluid 19 being made of coal dust and conveying gas is entered in circular passage 1 by feed pipe 2 is radial.In inlet drilling Place, pipeline section 4 are inserted into circular passage 1 as wearing piece, the fluid for being made up of coal dust and conveying gas integrated runner 5 19 are continuously dispersed to be transported to axial feed direction by radially fed direction, largely reduce abrasion and the point in this region Erosion.

Entrance 3 faces the centre of arcuate flow path section 7, is impinged upon in pipeline section 4 by the fluid 19 that coal dust and conveying gas form On the matrix of runner 5, be divided into two parts fluid, ideally two strands be it is the same, fifty-fifty flowed to by opposite direction Straight channel section 6.And flow channel section 7 acts on import 3 as the dispersal device of coal dust and conveying gas composition fluid 19.By using filling Gas sintering metal baffle or hard metal ceramic body protect flow channel section 7 in the zone of influence from frayed and spot corrosion.

Purge gass are sprayed from sintering metal surface, and a gas barrier layer is formd on matrix surface, is reduced by coal The bonding of abrasion and coal dust that powder particles generate.

Compared with flat plug-in unit 10,16, the attachment 11,17 made of sintering metal, hard metal or ceramics enhances dispersion Effect and reduce sedimentation.

Similar with the surface made of sintering metal, purging stomata 15 produces an additional gas outside bending section Separation layer reduces the risk of the outer wall dust settling of arcuate flow path section 7.Purging increasing for tolerance can be in the outer of arcuate channel section One section of space is generated between wall and process flows, so that solid particle be made hardly to be in contact with outer wall.

When leaving import 3, every stream of fluid respectively enters a runner 5, the sectional area of each runner in two fluids Equal to the half of the sectional area of feed pipe 2, in the transition region for entering arcuate flow path section 7 from feed pipe 2, and next enter runner 5 straight channel section 6 is to maintain constant by the flow velocity that coal dust and conveying gas form fluid 19.Pass through this method, it is therefore prevented that The separation and solid settlement issues of solid-gas fluid occur in runner 5.

List of reference numerals

1 circular passage

2 feed pipes

3 imports

4 pipeline sections

5 runners

6 straight channel sections

7 arcuate flow path sections

8 front ends

9 current dividers

10 sintering metal plug-in units

11 sintering metal attachmentes

12 purging air flues

13 purge lines

14 excurvation tunes

15 purging stomatas

16 hard metals or ceramic insert

17 hard metals or ceramic annex

18 purge gass

19 fluids being made of coal dust and conveying gas

20 casings

21 outer tubes

22 inner tubes

23 flanges

24 mounting flanges

25 axial coal dust channels

26 sintering metal disks

It will be understood by those skilled in the art that under the introduction of this specification, the present invention can be made some modifications or Adjustment.These modifications or adjustment should also be as within the scope of the claims in the present invention.

Claims (11)

1. a kind of equipment for fluidizing Solid Conveying and Melting, the equipment be used for by by coal dust with to convey the fluid (19) that gas forms defeated It is sent to circular passage (1), wherein feed pipe (2) is from being inserted radially into the extended line for making feed pipe (2) longitudinal axis in circular passage Intersect with the longitudinal axis of circular passage (1), which is characterized in that pipeline section (4) is removably inserted into feed pipe (2) import (3) region Circular passage (1) in, form one for by coal dust and the integrated runner (5) of fluid (19) that conveys gas and form.

2. the equipment according to claim 1 for fluidizing Solid Conveying and Melting, which is characterized in that pipeline section (4) is filled in annular The cross section in channel (1), pipeline section (4) have a runner (5) of a rectangular section, runner (5) to external outs open, including Two straight and parallel flow channel sections (6) and an arcuate flow path section (7), circumferential skewing of the arcuate flow path section (7) along pipeline section (4) And two straight channel sections (6) are connected, so that flow channel section (6), (7) constitute the runner (5) of a U-shaped, wherein

- two straight channel sections (6) are located in pipeline section (4),

It diametrically arranges and parallel with the longitudinal axis of circular passage (1),

On pipeline section (4) flow direction into circular passage (1) front end (8) at aperture and,

At least closed in the outer end for entering the inlet of circular passage (1),

Feed pipe (2) enters in the middle part of arcuate flow path section (7), and wherein arcuate flow path section (7) is outside at least at import (3) Portion is open,

The flow area of U-shaped runner (5) is equal to the half of feed pipe (2) flow area.

3. the equipment according to claim 2 for fluidizing Solid Conveying and Melting, which is characterized in that pipeline section (4) with feed pipe (2) it is equipped with a porous sintered metal plug-in unit (10) in the runner (5) of import (3) face position, and constitutes a purge gass Road and concordant with the basic holding of runner (5).

4. the equipment according to claim 2 for fluidizing Solid Conveying and Melting, which is characterized in that pipeline section (4) with feed pipe (2) it is equipped with a porous sintered metal attachment (11) in the runner (5) of import (3) face position and constitutes a purging air flue Porous sintered metal attachment (11) is set as half tube socket parallel with the longitudinal axis of circular passage (1).

5. the equipment according to claim 3 or 4 for fluidizing Solid Conveying and Melting, which is characterized in that sintering metal plug-in unit It (10) or around the characteristics of knot metal-ware (11) is at it back to having a purging air flue (12) on the inside of runner (5).

6. the equipment according to claim 5 for fluidizing Solid Conveying and Melting, which is characterized in that blowing in purging air flue (12) Scavenging (18) is supplied in circular passage (1) by the purge line (13) of an axial direction with conveying solid substance.

7. the equipment according to claim 2 for fluidizing Solid Conveying and Melting, which is characterized in that the pipe being located in runner (5) Section (4) is equipped with a wear-resisting hard metal or ceramic insert (16) or one in the position for facing feed pipe (2) import (3) Hard metal or ceramic annex (17).

8. the equipment according to claim 7 for fluidizing Solid Conveying and Melting, which is characterized in that hard metal or ceramic annex (17) it is used as the prismatic current divider (9) that a section is triangle.

9. the described in any item equipment for fluidizing Solid Conveying and Melting of -4 or 6-8 according to claim 1, which is characterized in that in addition For conveying the purging stomatas (15) of purge gass (18), the disk made of sintering metal (26) covers thereon, purges stomata (15) mutually in the excurvation tune (14) for being set to arcuate flow path section (7) of axial flat shape.

10. the equipment according to claim 7 or 8 for fluidizing Solid Conveying and Melting, which is characterized in that in addition for conveying The purging stomata (15) of purge gass (18), the disk made of sintering metal (26) cover thereon, purge stomata (15) mutual axis Into the excurvation tune (14) for being set to arcuate flow path section (7) of flat shape, and with the wear-resisting hard metal or ceramic insert (16) It is combined.

11. it is a kind of for passing through the gasification burner tip of pulverized coal preparation synthesis gas, it is used for including any one of claims 1 to 10 by coal The equipment that powder is transported to burner head, wherein using inert gas such as nitrogen or carbon dioxide as conveying gas and purge gass.