CN208250244U - Gasification furnace - Google Patents

Abstract

A kind of gasification furnace, while the combustion transformation capability for meeting coal dust, it is ensured that pulverized coal gasification furnace has preferable practicability and economy.Gasification furnace includes: furnace body for gasifying to coal dust, and the furnace body has combustion chamber；Three fine coal burners, three fine coal burners being provided at circumferentially spaced on the furnace body around the furnace body, the fine coal burner and the combustion chamber, to spray coal dust into the combustion chamber.The utility model can not be while the combustion transformation capability for meeting coal dust to solve existing pulverized coal gasification furnace, it is ensured that pulverized coal gasification furnace has the problem of preferable practicability and economy.

Description

Gasification furnace

Technical field

The utility model belongs to Gas Production technical field more particularly to a kind of gasification furnace.

Background technique

In Gas Production technical field, coal dust is adaptable with its, ash coal kind can be converted and hypoxemia consumption etc. it is special Point becomes the primary raw material of production coal gas, therefore, the Gas Production technique that coal dust gasification technique becomes for mainstream.

In coal dust gasification technique, high-temperature gasification is carried out to coal dust usually using pulverized coal gasification furnace, to make coal dust Chemical reaction, to obtain coal gas, the i.e. mixture of carbon monoxide and hydrogen.

Existing pulverized coal gasification furnace is usually single injector form and four form of nozzle, wherein the coal dust gas of single injector form Change furnace, that is, there is the pulverized coal gasification furnace of a fine coal burner, the pulverized coal gasification furnace of this structure type is unable to satisfy coal dust supply Demand, to can not reliably guarantee the combustion transformation capability of coal dust；And the pulverized coal gasification furnace of four form of nozzle, i.e., tool there are four around The fine coal burner of the circumferentially-spaced distribution of gasification furnace, the pulverized coal gasification furnace of this structure type not only increase and coal dust gasification The operation difficulty of the coal dust pressurized delivered unit of furnace connection, so that there is certain difficulty with adjusting in process pipelines conveying, control, And the equipment and construction cost of fine coal burner and attached fine coal pressurized delivered unit are also improved, so as to cause coal dust gasification The practicability and economy of furnace are poor.

Utility model content

The purpose of this utility model is to provide a kind of gasification furnaces, can not meet coal to solve existing pulverized coal gasification furnace While the combustion transformation capability of powder, it is ensured that pulverized coal gasification furnace has the problem of preferable practicability and economy.

The utility model provides a kind of gasification furnace, for gasifying to coal dust, comprising: furnace body, furnace body have burning Room；Three fine coal burners, three fine coal burner being provided at circumferentially spaced on furnace body around furnace body, fine coal burner and combustion chamber connect It is logical, to spray coal dust into combustion chamber.

Preferably, three fine coal burners are around the equally circumferentially spaced of furnace body.

Preferably, radial pitching angle theta is formed between the jet axis of fine coal burner and the sagittal plane of furnace body, is radially bowed Elevation angle theta is more than or equal to 0 ° and is less than or equal to 15 °；And/or fine coal burner jet axis and one of furnace body pass through fine coal burner Radial level pivot angle β is formed between the diameter of furnace body intersection point, radial level pivot angle β is more than or equal to 0 ° and is less than or equal to 15 °.

Preferably, furnace body is cylindrical and has spherical calotte structure, between fine coal burner and spherical calotte structure The ratio of the diameter of vertical range and spherical calotte structure is more than or equal to 1 and is less than or equal to 3.

Preferably, furnace body includes: shell；Water-cooling wall coil pipe, water-cooling wall coil pipe are arranged inside the shell, and between shell The hollow ring cavity for accommodating protective gas is formed, water-cooling wall coil pipe surrounds combustion chamber；Press air guide pore structure, pressure gas port Structure setting is on water-cooling wall coil pipe, and pressure air guide pore structure has the gas port extended in bending-like, and combustion chamber passes through air guide Hole is connected to hollow ring cavity.

Preferably, gasification furnace further includes igniting startup burner, and the top of furnace body is arranged in igniting startup burner, and lights a fire Startup burner is arranged along the axis of furnace body, and pressure air guide pore structure is annular in shape, and the peripheral side of igniting startup burner is arranged in.

Preferably, it is also provided with the protection gas entrance and purge gass entrance being connected to hollow ring cavity on shell, protects gas Entrance and purge gass entrance are spaced setting on the axial and circumferential of shell.

Preferably, furnace body also has shock chamber, shock chamber and combustion chamber and is located at the bottom of combustion chamber, gasification furnace It further include chilling ring and down-comer, wherein chilling ring connect with water-cooling wall coil pipe and towards stretching out in shock chamber, down-comer setting In one end of the separate water-cooling wall coil pipe of chilling ring.

Preferably, gasification furnace further includes brokenly bubble grid and flow guiding casing tube, wherein brokenly bubble grid is annular in shape, and broken It indulges in serfing the Net the outer peripheral edge of grid and the inner wall of shell connects, the inner peripheral of brokenly bubble grid connect with flow guiding casing tube, flow guiding casing tube It is set in the peripheral side of down-comer.

Preferably, shell also has lower cinder notch and raw gas outlet, wherein lower cinder notch is connected to shock chamber and is located at outer The bottom of shell, raw gas export the top that brokenly bubble grid is connected to and be located at shock chamber.

Preferably, gasification furnace further includes support construction, and support construction is arranged between shell and water-cooling wall coil pipe, with branch Support water-cooling wall coil pipe.

Using the technical solution of the utility model, by the way that three fine coal burners, and three are arranged on the furnace body of gasification furnace Fine coal burner is provided at circumferentially spaced around furnace body, in this way, three fine coal burners spray coal dust to combustion chamber simultaneously, is effectively increased The coal feeding amount of gasification furnace, it is ensured that coal dust is converted to the combustion transformation capability of raw gas；In addition, four in compared with the prior art The pulverized coal gasification furnace of form of nozzle, the gasification furnace of the application reduce the number of fine coal burner, to correspondingly reduce and powder The quantity of fine coal pressurized delivered unit that coal burner matches and is connected, has not only saved the cost of coal dust gasification operation, And the operation difficulty for the coal dust pressurized delivered unit being connected to pulverized coal gasification furnace is reduced, so that coal dust gasification process pipelines are defeated It send, control and adjusts and be easier to realize, improve the practicability and economy of gasification furnace.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the main view diagrammatic cross-section of the gasification furnace of the utility model；

Fig. 2 shows the vertical view schematic cross-sectional views at the A-A of the gasification furnace in Fig. 1；

Fig. 3 shows the partial enlargement diagram at the igniting startup burner of the gasification furnace in Fig. 1；

Fig. 4 shows the structural schematic diagram of the fine coal burner of the gasification furnace in Fig. 1；

Fig. 5 shows the structural schematic diagram of the igniting startup burner of the gasification furnace in Fig. 1.

Wherein, the above drawings include the following reference numerals:

10, furnace body；11, combustion chamber；12, shock chamber；13, shell；131, gas entrance is protected；132, purge gass entrance； 133, lower cinder notch；134, raw gas exports；14, water-cooling wall coil pipe；15, hollow ring cavity；16, air guide pore structure is pressed；161, it leads Stomata；20, fine coal burner；30, igniting startup burner；40, chilling ring；50, down-comer；60, brokenly bubble grid；70, flow guide sleeve Pipe；80, support construction；21, fine coal burner tube body；22, fine coal burner burner mounting flange；23, fine coal burner oxygen whirlwind wing Piece；211, fine coal channel；212, the first oxygen channel；213, the first cooling-water duct；214, the first cooling water inlet；215, One cooling water outlet；31, igniting startup burner tube body；32, igniting startup burner mounting flange；33, igniting startup burner oxygen Whirlwind fin；34, high pressure spot firelock；311, fuel gas passageway；312, the second oxygen channel；313, the second cooling-water duct； 314, the second cooling water inlet；315, the second cooling water outlet.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

The utility model provides a kind of gasification furnace, and for gasifying to coal dust, as depicted in figs. 1 and 2, gasification furnace includes Furnace body 10 and three fine coal burners 20, furnace body 10 have combustion chamber 11；Three fine coal burners 20 are set around the circumferentially-spaced of furnace body 10 It sets on furnace body 10, fine coal burner 20 is connected to combustion chamber 11, to spray coal dust into combustion chamber 11.

By the way that three fine coal burners 20 are arranged on the furnace body 10 of gasification furnace, and three fine coal burners 20 are around the week of furnace body 10 It is arranged to interval, in this way, three fine coal burners 20 spray coal dust to combustion chamber 11 simultaneously, effectively increases the throwing coal of gasification furnace Amount, it is ensured that coal dust is converted to the combustion transformation capability of raw gas；In addition, the coal dust of four form of nozzle in compared with the prior art Gasification furnace, the gasification furnace of the application reduce the number of fine coal burner 20, to correspondingly reduce mating with fine coal burner 20 Using and the quantity of fine coal pressurized delivered unit that is connected, not only saved the cost of coal dust gasification operation, but also reduce The operation difficulty for the coal dust pressurized delivered unit being connected to pulverized coal gasification furnace so that coal dust gasification process pipelines conveying, control with It adjusts and is easier to realize, improve the practicability and economy of gasification furnace.

It should be noted that coal feeding amount signified in the description of the present application is the coal dust injection into combustion chamber 11 It measures, signified raw material is coal dust in the application.

According to above structure, the operating load of gasification furnace can be quickly improved, shortens the driving time of gasification furnace；It can prevent gas Changing the hollow ring cavity 15 that thermal-flame anti-channeling enters gasification furnace in the combustion chamber 11 of furnace leads to 13 overtemperature of shell of furnace body 10；Effectively drop The dust-carrying capacity of low subsequent raw gas ash disposal washing system improves the operation stability of Heisui River system, prevents raw gas from exporting 134 Locate overtemperature, improves and guarantee the success rate that goes into operation of gasification furnace；Simplify the fine coal pressurized delivered unit being connected to fine coal burner 20 Control and adjusting, to reach the production efficiency and operation stability for improving gasification furnace on the basis of reducing cost of investment.

Compared with the pulverized coal gasification furnace of four form of nozzle, the gasification furnace of the application is reducing 20 economic cost of fine coal burner Under the premise of, it can be improved the coal feeding amount of gasification furnace, guarantee the combustion transformation capability of raw material, while reducing the operation of coal dust gasification operation Step and the startup procedure for simplifying gasification furnace, shorten driving time and the cost of gasification furnace, the throwing coal pressure of the gasification furnace of the application Power range is wide, and coal can be thrown within the scope of from normal pressure to operating pressure.Compared with overhead type single injector powder coal gasification furnace, the gasification furnace Coal feeding amount improved than single-nozzle gasifier very much, highest coal feeding amount is greater than 3000 ton/days, and it is wide to throw coal pressure limit, can be with Coal is thrown in 0.1MPa~4.1MPa pressure limit.

In addition, three fine coal burners 20 are around the equally circumferentially spaced of furnace body 10.

According to above structure, the mixed firinor fuel burning effect of the coal dust and oxygen in the combustion chamber 11 of gasification furnace can be improved, increase In delay reaction time of the pulverized coal particle in combustion chamber 11, improve the combustion transformation capability of raw material.

Specifically, as shown in Fig. 2, three fine coal burners 20 are distributed on furnace body 10 in 120 degree of angles each other.

In addition, forming radial pitching angle theta between the jet axis of fine coal burner 20 and the sagittal plane of furnace body 10, radially bow Elevation angle theta is more than or equal to 0 ° and is less than or equal to 15 °；And/or one of the jet axis of fine coal burner 20 and furnace body 10 passes through fine coal Radial level pivot angle β is formed between the diameter of 10 intersection point of burner 20 and furnace body, radial level pivot angle β is more than or equal to 0 ° and is less than Equal to 15 °.In this way, the overall structure of gasification furnace is optimized, by adjusting fine coal burner 20 to the side of the injection of combustion chamber 11 coal dust To the optimum efficiency that determining coal dust is converted to raw gas being more advantageous to, to improve the combustion transformation capability of raw material.

According to above structure, the flame of three burners is to 11 central-injection of combustion chamber, at the shaft core position of combustion chamber 11 Collide mixed firinor fuel burning, can form eddy flow, greatly improves material combusting conversion ratio.

In addition, furnace body 10 is cylindrical and has spherical calotte structure, between fine coal burner 20 and spherical calotte structure The ratio of the diameter of vertical range and spherical calotte structure is more than or equal to 1 and is less than or equal to 3.

According to above structure, material combusting transformation efficiency can further improve, thick slag carbon residue content can be made less than 1%, carefully Slag carbon residue content is less than 15%.

As shown in Figure 1 to Figure 3, furnace body 10 include: shell 13, water-cooling wall coil pipe 14 and press air guide pore structure 16, water cooling Wall coil pipe 14 is arranged in shell 13, and the hollow ring cavity 15 for accommodating protective gas, water-cooling wall are formed between shell 13 Coil pipe 14 surrounds combustion chamber 11, and pressure air guide pore structure 16 is arranged on water-cooling wall coil pipe 14, and pressure air guide pore structure 16 has In the gas port 161 that bending-like extends, combustion chamber 11 is connected to by gas port 161 with hollow ring cavity 15.

According to above structure, pressure air guide pore structure 16 has the gas port 161 extended in bending-like, can prevent from gasifying When furnace igniting goes into operation or operation in furnace pressure increases suddenly make high temperature rough gas return alter, cause furnace wall overtemperature generation.

Specifically, as shown in figure 3, igniting startup burner 30 and 14 junction of water-cooling wall coil pipe, which are arranged, presses air guide pore structure 16, pressure air guide pore structure 16 has the gas port 161 extended in bending-like, and protection gas enters gas from pressure air guide pore structure 16 The combustion chamber 11 for changing furnace forms voltage equalizing protection effect to water-cooling wall coil pipe 14, and pressure air guide pore structure 16 is set using concaveconvex structure Meter, i.e. labyrinth type design.

As shown in Figure 1 and Figure 5, gasification furnace further includes igniting startup burner 30, and igniting startup burner 30 is arranged in furnace body 10 Top, and startup burner 30 of lighting a fire is arranged along the axis of furnace body 10, and pressure air guide pore structure 16 is annular in shape, and is arranged and is lighting a fire The peripheral side of startup burner 30.

Since igniting startup burner 30 can be ensure that the success rate that the igniting of gasification furnace goes into operation, be avoided with independent burning Startup burner of lighting a fire when combined type fine coal burner feeds intake is easy the shortcomings that extinguishing, and shortens the driving time of gasification furnace and and reduces The driving cost of gasification furnace.

According to above structure, startup burner 30 of lighting a fire can light a fire in the shaft core position of combustion chamber 11, can make to fire It burns the temperature and pressure in room 11 and is rapidly reached throwing coal setting value.

As shown in Figure 1, being also provided with the protection gas entrance 131 and purge gass entrance being connected to hollow ring cavity 15 on shell 13 132, protect gas entrance 131 and purge gass entrance 132 to be spaced setting on the axial and circumferential of shell 13.

According to above structure, protection air-blowing can be carried out to hollow ring chamber 15 in the driving and parking of gasification furnace and sweep displacement.

Specifically, protection gas entrance 131 is offered on furnace body 10, is provided with the opposite side of protection gas entrance 131 Purge gass entrance 132 sweeps displacement for carrying out protection air-blowing to hollow ring chamber 15 when driving and parking.Pressure in hollow ring cavity 15 is wanted Higher than the pressure in the combustion chamber 11 of gasification burner, gas is protected to enter gasification hearth to 3 shape of water-cooling wall from pressure air guide pore structure 16 It is acted at voltage equalizing protection, pressure air guide pore structure 16 is designed using concaveconvex structure.

Optionally, the protection gas in hollow ring cavity 15 is nitrogen.

In addition, furnace body 10 also has shock chamber 12, shock chamber 12 is connected to and is located at the bottom of combustion chamber 11 with combustion chamber 11, Gasification furnace further includes chilling ring 40 and down-comer 50, wherein chilling ring 40 connect with water-cooling wall coil pipe 14 and towards shock chamber 12 One end of the separate water-cooling wall coil pipe 14 of chilling ring 40 is arranged in interior stretching, down-comer 50.

According to above structure, number of devices and the operation for reducing the high subsequent ash disposal system of temperature rough gas uplink mode are difficult Degree.

In addition, gasification furnace further includes brokenly bubble grid 60 and flow guiding casing tube 70, wherein brokenly bubble grid 60 is annular in shape, and The outer peripheral edge of brokenly bubble grid 60 is connect with the inner wall of shell 13, and the inner peripheral and flow guiding casing tube 70 of brokenly bubble grid 60 connect It connects, flow guiding casing tube 70 is set in the peripheral side of down-comer 50.

According to above structure, the short-circuit plume that effectively high temperature rough gas can be generated in the Quench water-bath of shock chamber 12 Brokenly bubble is carried out with air pocket, prevents high temperature rough gas from short circuit phenomenon occurring in a water bath, and a large amount of ash contents are carried out gasification Furnace avoids the raw gas of gasification furnace from exporting the dust burdening increase and temperature raising of raw gas at 134, and increases downstream coal gas ash disposal The burden of washing system and out battery limit (BL) coal gas overtemperature.

In addition, shell 13 also has lower cinder notch 133 and raw gas outlet 134, wherein lower cinder notch 133 connects with shock chamber 12 Lead to and be located at the bottom of shell 13, raw gas outlet 134 is connected to and is located at the top of brokenly bubble grid 60 with shock chamber 12.

Raw gas can be prevented since raw gas outlet 134 is located at the top of brokenly bubble grid 60 according to above structure Export temperature overheating problem at 134.

In addition, gasification furnace further includes support construction 80, support construction 80 is arranged between shell 13 and water-cooling wall coil pipe 14, To support water-cooling wall coil pipe 14.

According to above structure, combustion chamber 11 and shock chamber 12 is isolated in support construction 80, while playing to water-cooling wall coil pipe 14 Supporting role.

As shown in Figure 1, the gasification furnace of the utility model includes 10, three fine coal burners 20 of furnace body, igniting startup burner 30 With internal component etc..The design of furnace body 10 is in up-down structure, and top is combustion chamber 11, and lower part is shock chamber 12, the model of operating pressure It encloses for 0.1MPa~4.1MPa.30, three fine coal burners of an igniting startup burner are provided on furnace body 10 at combustion chamber 11 20 and water-cooling wall coil pipe 14 and press air guide pore structure 16 etc..

As shown in Figure 4 and Figure 5, fine coal burner 20 and igniting startup burner 30 are three runner designs.

As shown in figure 4, fine coal burner 20 includes that fine coal burner tube body 21, fine coal burner burner mounting flange 22 and fine coal are burnt Mouth oxygen whirlwind fin 23, wherein fine coal burner tube body 21 has fine coal channel 211, the first oxygen channel 212 and first cooling Aquaporin 213, the first cooling-water duct 213 have the first cooling water inlet 214 and the first cooling water outlet 215.

As shown in figure 5, igniting startup burner 30 includes igniting startup burner tube body 31, igniting startup burner mounting flange 32, it lights a fire startup burner oxygen whirlwind fin 33 and high pressure spot firelock 34, wherein the setting of high pressure spot firelock 34 goes into operation burning in igniting In mouth tube body 31, igniting startup burner tube body 31 has fuel gas passageway 311, the second oxygen channel 312, the second cooling-water duct 313, the second cooling-water duct 313 has the second cooling water inlet 314 and the second cooling water outlet 315.

It should be noted that gasification furnace when going into operation, burns as shown in figure 5, fuel gas is entered by fuel gas passageway 311 Room 11 has a certain proportion of oxygen by the second oxygen channel 312 with fuel gas, and by igniting startup burner oxygen rotation Enter combustion chamber 11 after wind fin 33 to mix with fuel gas, forms the flame that goes into operation of lighting a fire under the action of high pressure spot firelock 34, and Keep independent burning state.

Fine coal burner 20 is after igniting startup burner 30 lights the mixed gas of fuel gas and oxygen, and 11 temperature of combustion chamber Reach throwing coal setting value with pressure constantly to start.According to the ratio of setting, as shown in figure 4, oxygen passes through the first oxygen channel 212 Into combustion chamber 11, coal dust moves state into the first oxygen channel 212 with dense-phase flow, and in fine coal burner oxygen whirlwind fin 23 Under the action of form eddy flow and mix in the outlet of the first oxygen channel 212 with coal dust and be ignited the flame ignition that goes into operation, formation is gasified Flame.Shaft core position of the flame that three fine coal burners 20 are formed in combustion chamber 11 collides burning, can form eddy flow, improve coal The burning degree of mixing of powder increases the gasification center temperature of gasification furnace, improves material combusting conversion ratio.

As shown in Figure 1, raw gas downlink Quench processing in gasification furnace that coal dust generates, high temperature rough gas carry slag warp The Quench water-bath Quench cooling washing that down-comer 50 enters shock chamber 12 is crossed, the chilling ring 40 on 50 top of down-comer sprays chilled water The inner wall flowed in down-comer 50 forms protection moisture film, and slag solidification enters dreg-locking hopper by lower cinder notch 133, and high temperature rough gas is through leading It flows casing 70 and brokenly bubble grid 60 and enters subsequent coal gas ash disposal washing system from raw gas outlet 134.

In addition, the ratio range of the length of the vertical range and down-comer 50 of brokenly bubble grid 60 and 70 lower end of flow guiding casing tube Between 1/4~3/4, compared with common foam-breaking strip, brokenly bubble grid 60 can more effectively abolish the Quench of shock chamber 12 The plume bubble that water-bath high temperature raw gas is formed prevents high temperature rough gas from short circuit occurring in Quench water-bath or forms big Bubble, leads to carry secretly that a large amount of dusts enter subsequent wash system and raw gas exports 134 temperature overtemperatures and occurs.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with In attached drawing afterwards do not need that it is further discussed.

In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself Wide is inside and outside.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this The limitation of utility model protection range.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (11)

1. a kind of gasification furnace, for gasifying to coal dust characterized by comprising

Furnace body (10), the furnace body (10) have combustion chamber (11)；

Three fine coal burners (20), three fine coal burners (20) being provided at circumferentially spaced in the furnace around the furnace body (10) On body (10), the fine coal burner (20) is connected to the combustion chamber (11), to spray coal dust into the combustion chamber (11).

2. gasification furnace according to claim 1, which is characterized in that three fine coal burners (20) are around the furnace body (10) It is equally circumferentially spaced.

3. gasification furnace according to claim 1 or 2, which is characterized in that

Radial pitching angle theta, institute are formed between the jet axis of the fine coal burner (20) and the sagittal plane of the furnace body (10) Radial pitching angle theta is stated more than or equal to 0 ° and is less than or equal to 15 °；And/or

One of the jet axis of the fine coal burner (20) and the furnace body (10) is by the fine coal burner (20) and described Radial level pivot angle β is formed between the diameter of furnace body (10) intersection point, the radial level pivot angle β is more than or equal to 0 ° and is less than or equal to 15°。

4. gasification furnace according to claim 1 or 2, which is characterized in that the furnace body (10) is cylindrical and has spherical surface Vault construction, vertical range and the spherical calotte structure between the fine coal burner (20) and the spherical calotte structure The ratio of diameter is more than or equal to 1 and is less than or equal to 3.

5. gasification furnace according to claim 1, which is characterized in that the furnace body (10) includes:

Shell (13)；

Water-cooling wall coil pipe (14), the water-cooling wall coil pipe (14) setting in the shell (13), and with the shell (13) it Between form the hollow ring cavity (15) for accommodating protective gas, the water-cooling wall coil pipe (14) surrounds the combustion chamber (11)；

Air guide pore structure (16) are pressed, pressure air guide pore structure (16) is arranged on the water-cooling wall coil pipe (14), described Pressure air guide pore structure (16) has the gas port (161) extended in bending-like, and the combustion chamber (11) passes through the gas port (161) it is connected to the hollow ring cavity (15).

6. gasification furnace according to claim 5, which is characterized in that the gasification furnace further includes igniting startup burner (30), The igniting startup burner (30) is arranged at the top of the furnace body (10), and the igniting startup burner (30) is along the furnace body (10) axis setting, pressure air guide pore structure (16) annularly, and are arranged in the outer of igniting startup burner (30) Side.

7. gasification furnace according to claim 6, which is characterized in that be also provided with and the hollow ring on the shell (13) The protection gas entrance (131) and purge gass entrance (132) of chamber (15) connection, the protection gas entrance (131) and the purge gass Entrance (132) is spaced setting on the axial and circumferential of the shell (13).

8. gasification furnace according to claim 5, which is characterized in that the furnace body (10) also has shock chamber (12), described Shock chamber (12) is connected to and is located at the bottom of the combustion chamber (11) with the combustion chamber (11), and the gasification furnace further includes Quench Ring (40) and down-comer (50), wherein the chilling ring (40) connect with the water-cooling wall coil pipe (14) and towards the Quench It is stretched out in room (12), one far from the water-cooling wall coil pipe (14) of down-comer (50) setting in the chilling ring (40) End.

9. gasification furnace according to claim 8, which is characterized in that the gasification furnace further includes brokenly bubble grid (60) and leads Flow casing (70), wherein the brokenly bubble grid (60) annularly, and the outer peripheral edge of the brokenly bubble grid (60) and described outer The inner wall of shell (13) connects, and the inner peripheral of the brokenly bubble grid (60) is connect with the flow guiding casing tube (70), the water conservancy diversion Casing (70) is set in the peripheral side of the down-comer (50).

10. gasification furnace according to claim 9, which is characterized in that the shell (13) also has lower cinder notch (133) and thick Gas exit (134), wherein the lower cinder notch (133) is connected to and is located at the bottom of the shell (13) with the shock chamber (12) Portion, the raw gas outlet (134) are connected to and are located at the top of the brokenly bubble grid (60) with the shock chamber (12).

11. gasification furnace according to claim 5, which is characterized in that the gasification furnace further includes support construction (80), described Support construction (80) is arranged between shell (13) and the water-cooling wall coil pipe (14), to support the water-cooling wall coil pipe (14).