CN209412158U - A kind of burner and airflow bed gasification furnace for airflow bed gasification furnace - Google Patents
A kind of burner and airflow bed gasification furnace for airflow bed gasification furnace Download PDFInfo
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- CN209412158U CN209412158U CN201821087275.3U CN201821087275U CN209412158U CN 209412158 U CN209412158 U CN 209412158U CN 201821087275 U CN201821087275 U CN 201821087275U CN 209412158 U CN209412158 U CN 209412158U
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/10—Nozzle tips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
Abstract
The utility model provides the burner and airflow bed gasification furnace for being used for airflow bed gasification furnace, and burner includes central tube, outer tube, the first connecting tube and the second connecting tube；Circular passage is formed between outer tube and central tube, center tube cavity forms central passage；Axial fuel passage is equipped in circular passage；Multiple screw elements are additionally provided in circular passage, screw element is located at below axial fuel passage and closes the gap between the outlet at bottom of adjacent axial fuel passage, spiral fuel channel is formed between adjoining spiral element, each axial fuel passage is connect with a spiral fuel channel respectively, and the two is connected in junction with identical cross sectional shape.Provided burner has more preferable wearability, and fuel and oxidant can be mixed preferably and obtain more uniform burner flame.
Description
Technical field
The utility model relates to a kind of burner for airflow bed gasification furnace and the airflow bed gasification furnace of the burner is installed.
Background technique
The self-heating entrained flow gasification of solid, liquid and gaseous fuel is widely known in synthesis gas preparation field.
In the reaction chamber of entrained flow gasification, a startup burner (also referred to as altar lamp or igniter burner) is normally at gas
The middle position for changing furnace roof portion, around arrange several gasification burner tips (also referred to as powder burner, main burner or single fire around it
Mouth).In the arrangement of this " tipburn mouth ", flow direction of medium is directly down.Expand in the flame region and air-flow of burner
Scattered region, carbon and protium in fuel are converted into crude synthesis gas under partial oxidation reaction and subsequent reactions effect,
The slag particles not being oxidized are mingled in the gas flow, need to separate to it.About more detailed gasification process and manufacture gas
The principle of fluidized bed gasification reactor is shown in patent DE4109231C2.
Fuel, oxygen and steam (as needed) enter reaction chamber by gasifier nozzle and are sufficiently mixed, with such side
Formula they be converted into the synthesis gas rich in hydrogen and carbon monoxide as fully as possible under the reducing conditions.To obtain high quality
The ratio of synthesis gas, fuel and oxidant by higher carbon compounds can completely into synthesis gas components and inorganic compound enter it is molten
Mode in slag selects.Coal dust is in 1400 DEG C to 1700 DEG C of temperature range and 40 to gasifying in 80bar pressure limit.
At least provided with a gasification burner tip and a startup burner to establish air pressure in reaction chamber simultaneously at the top of airflow bed gasification furnace
Light fuel.Fuel is mixed by a kind of fuel and conveying gas, is sent with the close stream mode of movement of gas phase to gasification burner tip, is being gasified
Indoor flame region is heated to the reaction temperature of needs, is subsequently converted to synthesis gas, and does not have the component of burning in fuel
It is converted into slag particles in the gas flow.Reaction chamber is usually surrounded with water-cooling wall, for cooling down gasification furnace pressure-bearing outer wall, water-cooling wall by
Pipe is welded to form in a gas tight manner, there is cooling water circulation in pipe.
The crude synthesis gas of heat is cooled to ash fusion point or less and separates with slag, then goes to gas downstream process flow.Most
Synthesis gas will be used to generate required final products afterwards.
A kind of burner is disclosed in patent CN104373935A, in the burner, tangentially enters a circular passage
Fuel fluid respectively enters the axial fuel passage of several different lengths.The fuel fluid come from axially different channel is in burner
Head can reconsolidate into an annular fluid to compensate the variation of the concentration in coal dust transmission process.By by the fuel stream of eddy flow
Body with one axially spray or rotation oxidant fluid mix, can burner head formed a stable flame, and by
To the synthesis gas of high quality.Due to there is abrasion on delivery air road in coal dust, so the design existing defects of above-mentioned burner,
Especially burner head annular flow path design.
To increase the pressure in gasification reaction room and lighting gasification burner tip, to use and arrive described startup burner, also serve as
Igniter burner or altar lamp burner, essence are plus an ignitor by a fuel channel and an oxygen channel (as specially
Sharp 0 3223787 A2 of EP) starting to work for burner provides firing potential.Usual startup burner is integrated in gasification burner tip
In heart pipe (10 2,008 0,022 572 A1 of patent DD 228 338 A1, DD 237 3223 A1, DE).But also have individually
The setting of startup burner.A kind of more combustion nozzle systems are such as described in 10 2,008 020 204 A1 of patent DE, wherein gasifying
It reacts and arranges three gasification burner tips on ceiling flange, mutually coordinate between three gasification burner tips 120 degree of angles and opening around centre
Work burner is circumferentially arranged, and parallel with the axis of vaporizer.The flange positioned beneath one external burner cooling box on top, is played solid
Surely the effect of burner is supported, and the heat-barrier material of different pyroconductivities is installed between each burner guide sleeve inside it.
The target of 104373935 A of patent CN of open utility model is the further performance for improving burner, and burner is resistance to
It is more preferable to grind performance, manufacturing process simplifies, and cooling effect is more preferable.
Utility model content
The utility model provides a kind of burner with more preferable wearability for airflow bed gasification furnace, fuel and oxidant
It can preferably mix and obtain more uniform burner flame.
The utility model be reach its purpose, the technical solution adopted is as follows:
The utility model provides a kind of burner for airflow bed gasification furnace,
The burner includes outer tube, the central tube in outer tube, the first connecting tube and the second connecting tube；Outer tube
There are radial distances between the opposite wall surface of both central tubes to form circular passage, and the center tube cavity, which is formed with, to be used for
Oxidant is delivered to the central passage on burner head；First connecting tube be installed on outer tube and with the circular passage
Connection, the first connecting tube, which is equipped with, can make fuel peripheral jet into the import in circular passage；Second connecting tube is installed on
It is connected on central tube and with the central passage, for inputting oxidant into central passage；It is equipped with and uses in the circular passage
In the axial fuel passage of conveying fuel；It is located at the position below the first connecting tube in the circular passage and is equipped with distributor, institute
It states and is equipped with outlet corresponding to each axial fuel passage on distributor, for distributing the fuel entered in circular passage to each
A axial fuel passage；It is characterized in that,
It is located at below axial fuel passage in the circular passage and is additionally provided with the multiple screw elements being circumferentially arranged, and by phase
Gap closing between the outlet at bottom of adjacent axial fuel passage；There are spacing between adjoining spiral element to form spiral fuel
Channel, the equivalent width of the spacing and axial fuel passage, each axial fuel passage respectively with a spiral fuel channel
Connection, and the two is connected in junction with identical cross sectional shape.
In some preferred embodiments, the sum of the sectional area of each axial fuel passage is equivalent to the fuel inlet of outer tube
The area of section at place.
There is a pair of opposite curved surface sidewall in some preferred embodiments, between adjoining spiral element, and this is opposite
Curved surface sidewall between there are spacing to form the spiral fuel channel, the spacing between the opposite curved surface sidewall with it is described
The equivalent width of axial fuel passage.
In some preferred embodiments, what the width of each axial fuel passage was consistent with, constitute spiral fuel channel
Adjoining spiral element side wall between spacing be consistent；And/or between each axial fuel passage is uniform in circular passage
Every arrangement；And/or each axial fuel passage has approximate rectangular cross sectional shape；And/or each spiral fuel channel
Entrance is located at same level；And/or the distributor includes several funnel-shaped recesses, the funnel-shaped recesses are circumferentially distributed
In in circular passage, funnel-shaped recesses are equipped with the outlet of the distributor.
In some preferred embodiments, corresponding to the radial cross-section side in the circular passage space for being equipped with screw element
Upwards, remaining circular passage space except each screw element enclosing coil fuel channel；
And/or it is identical and interchangeable between multiple screw elements, screw element has the shape of similar triangle, spiral
The side wall of element has curve shape compatible with circular passage inner surface.
In some preferred embodiments, the screw element is mounted on central tube, the central tube and outer tube it
Between be detachably connected.
In some preferred embodiments, the axial fuel passage include a spaced walls, the spaced walls with correspond to
Radial direction between the respective center pipe outer wall part of axial fuel passage in circular passage is arranged for interval；
And/or the central passage lower part is equipped with cyclone, so that the oxidant of central passage lower part is entering burner head
Tangential stream part or rotation stream part are generated before portion.
In a kind of preferred embodiment, it is equipped in the circular passage described for being mutually enclosed with the spaced walls
The wall of axial fuel passage.
In some preferred embodiments, annular gap, the ring are formed between the outer wall and inner wall of the outer tube
Shape gap is connected on the outer tube and is used for along axially parallel direction extends and extend to nozzle head with outer tube
Into annular gap the first cooling water connecting pipe for water of cooling water supply and for by annular gap cooling water discharge second
Cooling water connecting pipe for water.
In some preferred embodiments, it is additionally provided with partition wall in the annular gap, the partition wall is by annular gap
It is divided into the internal annular gap close to outer sleeve inner wall side and the outer annular gap close to housing pipe outer wall side；It is described
Internal annular gap is connected to outer annular gap in the position close to burner head, first cooling water connecting pipe for water and inside
Annular gap is connected to cooling water supply thereto, and second cooling water connecting pipe for water is connected to will wherein with outer annular gap
Cooling water discharge；
The hollow shim of annular, the bottom end of the partition wall and the annular are equipped in the annular gap on burner head
Hollow shim connection, the hollow shim of annular keep the annular gap inner space on burner head thinning so that cooling water exists
The flow velocity on burner head becomes faster；
The hollow shim of annular offers circumferential aperture in internal annular gap side.
Preferably, the circumferential aperture is located at the position for the upstream that fluid flows in burner head；
And/or reinforcing rib is equipped in the hollow shim of annular.
Preferably, multiple reinforcing ribs being evenly spaced on, multiple reinforcements are equipped in the hollow shim of annular
A circle is integrally formed between muscle；
And/or the reinforcing rib extend to the annular gap positioned at burner head inner and outer wall and respectively with the two
Connection.
The utility model provides a kind of prepares synthesis gas by dusty fuel partial oxidation process in airflow bed gasification furnace
Burner,
Burner (1), comprising:
Outer tube (6), certain radial distance has a central tube (5) inside it, thus forms one for defeated
Send oxidant central passage (11) and one for conveying the circular passage (12) of fuel to burner head；
One is used to supply a kind of connecting tube (2) of fuel, and connecting tube (2) is installed on outer tube (6), connecting tube (2)
Fuel peripheral jet can be made into the import of circular passage (12) including one；
One is used to supply the connecting tube (3) of the oxidant including oxygen and steam, and connecting tube (3) is installed on central tube
(5) on；
There are the distributor (14) that fuel is conveyed by several funnel-shaped recesses, the funnel below connecting tube (2)
Connected in star is circumferentially distributed to have outlet in annular section and in circular passage, each outlet enters one and is located at circular passage
(12) in, there is the axially vertical fuel channel (15) in approximate rectangular section, wherein the sum of sectional area of fuel channel (15) phase
When the sectional area at fuel inlet,
Each axial fuel passage (15) enters a spiral fuel channel before burner head with identical section
(19), wherein
Helical duct (19) be by multiple identical, triangles and it is interchangeable, be located at axial fuel passage (15)
The screw element (16) of lower section forms, and screw element (16) is arranged in circular passage (12) and from each other with fuel channel
(15) width is that distance is arranged in circumferential direction,
Screw element (16) is completely enclosed by the space on circular passage (12) radial cross-section direction,
Each screw element (16) is fixed upwardly by level, and by two consecutive fuels in circular passage (12)
Gap closing between the outlet in channel (15)；
The side wall (17,18) of screw element (16) and the inner surface of circular passage (12) have identical curve shape, structure
At the side wall of spiral fuel channel (19), the distance of each side wall (17,18) is the same.
Preferably, each fuel channel (15) has an additional double wall (20), with central tube (5) with it is certain,
Continuous distance arrangement.
Preferably, outer tube (6) is designed as including the annular gap (7) cooling for inside, and passes in and out for cooling water
Connecting tube (4.1,4.2) double-tube structure.
Preferably, outer tube (6) includes the concentric partition wall (21) being located in annular gap (7), is separated in one
Portion annular gap (7.1) is sent into burner head for cooling water and an outer annular gap (7.2) is used for burner head
Cooling water returns, and
The bottom end of the partition wall (21) in burner head in the annular gap (7) of outer tube (6) annular it is hollow
Shim (9) is connected, and the effect of shim (9) is to keep annular gap (7) inner space on burner head thinning to obtain more
The flow velocity of fast cooling water on shim (9), has circumferential aperture (10) in internal annular gap (7.1) side.
Preferably, in central passage (11), equipped with modular, interchangeable a cyclone (8), cyclone
(8) it is located at the front on burner head, for axially producing one oxidant slipstream；
And/or central tube (5) is removably installed on outer tube (6).
The present invention also provides the airflow bed gasification furnaces of burner described above, in an airflow bed gasification furnace, 3 or more
More burners (1) is around a center startup burner by circumferentially in airflow bed gasification furnace top, each burner and gasification
Furnace axis is parallel or angled.
Technical solution provided by the utility model has the following beneficial effects:
Burner provided by the utility model branches to each axial direction after fuel medium flows into circular passage by connecting tube
In fuel channel, it is logical to continue to branch to each spiral fuel positioned at front end of burner corresponding with each axial fuel passage later
In road, there is compensating action to the fluctuation of fuel conveying, play buffering effect；And spiral fuel channel and axial fuel passage exist
The two junction is connected with identical section, so that fuel medium its flow velocity on transport path is maintained at one more one
Cause and compared with low abrasion speed, largely avoid that common segregation effect and discontinuity in fuel dense-phase flow occurs, into
And the wearability of burner can be improved；Simultaneously use the utility model burner, be additionally favorable for fuel and oxidant uniformly mix from
And obtain uniform burner flame.
Detailed description of the invention
Fig. 1: the burner schematic cross-sectional view with screw element；
Fig. 2 a: first example of one spaced walls of axial fuel passage band；
Fig. 2 b: second example of one spaced walls of axial fuel passage band；
Fig. 3: 3 dimension schematic diagrames of screw element；
Fig. 4 a: the burner head schematic cross-sectional view of hollow shim is had in cooling annular gap；
Fig. 4 b: burner head local overlooking schematic diagram, cross sectional portion therein are the burner head part at lower position
Sectional view.
Description of symbols:
1- burner, the first connecting tube of 2- (or fuel connecting tube), the second connecting tube of 3- (or oxidant connecting tube), 4-
Cooling water connecting pipe for water (the first cooling water connecting pipe for water of 4.1-, the second cooling water connecting pipe for water of 4.2-), 5- central tube, 6- outer tube, 7-
Annular gap, 7.1- internal annular gap, 7.2- outer annular gap, the inner wall of the annular gap 7.3-, the annular gap 7.4-
Outer wall, 8- cyclone, the hollow shim of 9-, 9s- reinforcing rib, 10- aperture, 11- central passage, the circular passage 12-, the broken rotation of 13-
Device, 14- distributor, 15- axial fuel passage, 16- screw element, 17- side wall, 18- side wall, 19- spiral fuel channel, between 20
Next door (or double wall), 21- partition wall, 22- pipe, 23- flange, 24- wall, 25- burner head.
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.
The position relations such as "upper" involved in text, "lower", "inner", "outside", " bowing ", " facing upward " are with position relation shown in Fig. 1
On the basis of." first " described in the text, " second " are not the meaning of sequence or quantity, and are only easy for describing and distinguishing.
Burner provided by the utility model for airflow bed gasification furnace, referring to Fig. 1.The burner 1 includes central tube 5, outer
Casing 6, the first connecting tube 2 and the second connecting tube 3.Wherein central tube 5 is set in outer tube 6, i.e., outer tube 6 is set in central tube
Outside 5, and there are radial distances between the opposite wall surface of the two, that is, there is spacing in the radial direction in the two, so that outer tube 6
Space between central tube 5 forms circular passage 12.5 inner cavity of central tube is cavity, for for conveying oxidant (including oxygen
And water vapour) to the central passage 11 on burner head 25.First connecting tube 2 is mounted on outer tube 6, is specially mounted on housing
It on the fuel inlet of pipe 6, and is connected to circular passage 12, the first connecting tube 2 is for inputting fuel into circular passage 12.First
Connecting tube 2, which is equipped with, can make fuel peripheral jet into the import in circular passage 12；Specifically, the first connecting tube 2 is to burner head
In the inclination of 25 direction of portion and the closed fuel inlet for being connected to outer tube 6, fuel is made to enter circular passage 12 in tangential direction.
Second connecting tube 3 is mounted on central tube 5, is specifically located at 5 top of central tube, and be connected to central passage 11, the second connecting tube 3
For inputting oxidant into central passage 11；Second connecting tube 3 and central tube 5 can specifically be arranged with coaxial form.In annular
Be equipped with axial fuel passage 15 in channel 12, the number of axial fuel passage 15 can be it is two or more, preferably three or more,
Axial fuel passage 15 is specially the vertical channel extended along the direction parallel with the axial direction of outer tube 6, axial fuel
Channel 15 is used to deliver into the fuel in circular passage 12 along the direction axially towards burner head 25.
Distributor 14 is equipped in circular passage 12, specifically, distributor 14 is located at the position below the first connecting tube, tool
Body is below the fuel inlet of outer tube 6, and distributor 14 is equipped with the outlet to match with 15 number of axial fuel passage,
Distributor 14 will be for that will enter in the downward flow guide distribution of fuel to each axial fuel passage 15 in circular passage 12, distributor
14 specifically have several circumferential directions using the distributor 14 for material diversion distribution commonly used in the art, such as distributor 14
The funnel-shaped recesses structure being distributed in circular passage is provided with outlet in the position for corresponding to axial fuel passage 15, and being used for will
Fuel is guided to corresponding axial fuel passage 15.Specifically as in some embodiments, there are three leak using band for distributor 14
Bucket shape and bottom open that there are three the groove exported, three outlets interval hexagonal angle circumferential arrays；The outlet of three distributors 14,
Each enters in a straight axial fuel passage 15 parallel to each other.It can certainly be other specific constructive forms, it is right
This is not repeated.
Screw assembly 26 is additionally provided in circular passage 12, the screw assembly 26 be particularly located at below axial fuel passage and
The position of burner above-head, specifically, the position between 15 bottom of axial fuel passage and burner head, the spiral
Component 26 completely encloses the gap between the outlet at bottom of adjacent axial fuel passage 15.On screw assembly 26, correspond to
Each axial fuel passage 15, which is accordingly formed with, is attached thereto logical spiral fuel channel 19.Moreover, spiral fuel channel
Entrance is connected with the outlet at bottom of axial fuel passage with identical cross sectional shape therebetween, and specifically such as, the two is in housing
The cross sectional shape of pipe in the radial direction is identical and is connected with this identical cross sectional shape.Each axial fuel passage 15 is in bottom
It exports with identical section into linking into a corresponding spiral fuel channel 19.
In the utility model circular passage 12, the lower section of each axial fuel passage 15 connects a spiral fuel channel
19, it realizes fuel and oxidant medium preferably mixes, to ensure that more uniform burner flame.The utility model is burnt
Another advantage of mouth is the buffering effect by being mounted on front end of burner helical shunt corresponding with axial fuel passage 15 channel,
The fluctuation of fuel conveying is compensated.With set there are three axial fuel passage 15 and corresponding three spiral fuel channels 19 as
Example, during the work time, three strands of fuel will enter spiral fuel channel 19 in a manner of spiral flow to burner from axial fuel passage 15
Flowing is ejected into circular passage 12 below screw element later and forms a united annular fuel medium flow field.
In a specific embodiment, referring to Fig. 1, on burner head 25, central passage 11 and circular passage 12 form one
The discharge canalis spinalis (canalis spinalis is discharged centered on or) of back taper, oxidant medium and fuel medium are by discharge canalis spinalis on burner head
It sprays.
By the way that fuel conveying is divided into the parallel channel of several axial directions (axial fuel passage 15) conveying, the combustion inside burner
Material delivered length has accomplished to minimize.Additionally, it is preferred that axial fuel passage 15 has approximate rectangular cross sectional shape, can make
Have the utilization of the sectional area of circular passage 12 than whole cylindrical fuel transfer passage technology in the past conveying effect more preferably.
In preferred embodiments, the section of each axial fuel passage 15 (refers specifically to cutting in outer tube radial direction
Face) the sum of area is equivalent to the area of section at the fuel inlet of outer tube 6, that is, the area of section of the fuel inlet of outer tube 6
It is consistent with each axial fuel passage 15 in radial the sum of area of section；So that flow velocity is consistent substantially in burner,
The segregation effect generated in fuel dense-phase flow is prevented to a considerable extent.
3 or more axial fuel passages 15 are set and spiral fuel channel 19 is possible to, but therefore
Obtain the export volume for correspondingly increasing distributor 14.
Referring to Fig. 1, Fig. 3, screw assembly 26 is specifically to be made of screw element 16, the specific number of screw element 16 according to
Depending on the number of spiral fuel channel 19.Multiple screw elements 16 are installed on 15 lower section of axial fuel passage and are circumferentially arranged, and
And screw element 16 closes the gap between the outlet at bottom of adjacent axial fuel passage 15, such as the top envelope of screw element 16
Close the gap.Referring to Fig. 3, spacing arrangement is between adjoining spiral element 16 to form spiral fuel channel；Specially adjacent spiral shell
It revolves and there is the opposite side wall 17,18 in a pair of of position between element 16, be illustrated in figure 3 curved surface sidewall, the opposite side wall 17,18
Between there are spacing so that between the opposing sidewalls formed spiral fuel channel 19；Spacing between the opposite side wall 17,18
The width D (see Fig. 2 b) of the corresponding axial fuel passage 15 in position is consistent therewith.It is each in preferred embodiment
The width of axial fuel passage 15 is consistent, so that the spacing between each opposite side wall 17,18 is also consistent, spiral shell
The side wall 17,18 of rotation element 16 constitutes the side of spiral fuel channel 19, from each other by identical distance arrangement.Using excellent
Select scheme, entire coal dust path all has an essentially identical channel cross-section for fuel conveying in burner, fuel medium from
Flow velocity on entrance to the entire burner path in burner head is held at a speed essentially identical, compared with low abrasion, can keep away
Exempt from that segregation effect and discontinuity common in fuel dense-phase flow occurs.
The curvature of the side wall 17,18 of screw element 16 increases with flow direction, and when installation can first be directed at burner length axis
It is then bent along circumferential direction with an angle increased continuously again to direction.By the curvature or reduction that change side wall 17,18
The exit angle that the length of already made screw element 16 sprays fuel medium to reach optimization is feasible.Screw element 16 can
To be milling part, but it is also contemplated that the other dimension of manufacturing method such as 3 printings or laser melting technology obtain.
In some preferred embodiments, screw element 16 can be carried out installation by spot welding and is positioned on central tube 5；Into
One step, the installation of central tube 5 and outer tube 6 is also removably, specifically such as, it is removable that central tube and outer tube to be passed through flange
The connection unloaded；So, the replacement that screw element 16 can be convenient, because they can be quick by releasing central tube 5
It takes out, it is very convenient when screw element 16 occurs abrasion or needs replacing shape and size in this way.Screw element 16 is installed on
On central tube 5, axial fuel passage 15 similarly can be replaced or be transformed by simple step.Due to screw element 16
The characteristic being detachably connected between multiple units package assembly and central tube 5 and outer tube 6, burner are easy to repair maintenance.
Central tube 5 and outer tube 6 are to be tightly connected from each other, as shown in Figure 1, on the top of central tube 5 and outer tube 6
Portion is equipped with flange 23 (Fig. 1 from top to bottom second flange of number), and the two is tightly connected by the flange.
In some embodiments, the entrance of each screw element 16 is located at same level, and is fixed on central tube 5.
Preferably, corresponding in the circular passage 12 equipped with screw assembly 26, on its radial cross-section direction, screw element 16 is complete
Remaining 12 space of circular passage except totally-enclosed spiral fuel channel 19,16 curve of screw element extends to end, so that diameter
It is covered to the open cross-sections in direction.Screw element 16 fills the radial open cross-sections of circular passage 12, thus its circumferential direction
Curve matches with the inside and outside diameter of circular passage 12.
Preferably, it can be interchanged between each screw element 16, each screw element 16 is identical, and screw element 16
Body has curve form compatible with circular passage 12, so as to remaining except good enclosing coil fuel channel 19
12 space of circular passage.Referring to Fig. 3, the side of screw element 16 and 12 inner surface of circular passage have identical curve shape,
In some embodiments, the concrete shape of screw element 16 is similar to the shape of triangle.Screw element 16 is placed in
In circular passage 12, it is circumferentially arranged from each other with the width D interval of axial fuel passage 15.
Screw element 16 preferably uses the abrasion-resistance screw element 16 of high allowance material, to can further improve burner head
The wearability of fuel channel component.In some preferred embodiments, by using hard metal or ceramic material in screw element 16,
Or wear-resistant ceramic protective layer is used on its side wall, the maintenance period interval of burner will further be extended.
Preferably, axial fuel passage 15 has approximate rectangular cross sectional shape, which refers specifically to outer tube radial direction side
To section, a-2b referring to fig. 2.And the outlet at bottom of axial fuel passage and both the entrance of spiral fuel channel are with identical
Cross sectional shape be connected.Each axial fuel passage 15 is located at the outside of central tube 5, in some embodiments, axis
It is made of to fuel channel 15 U-shaped or C-shaped, forms axial fuel passage 15, U-lag or C-channel by U-lag or C-channel
Opening face directly against central tube 5, and weldering is opened up on central tube 5, or is connected on central tube 5 with other airtight modes；For
The close curvature for adapting to circular passage 12, the external surface shape of axial fuel passage 15 may may require that additional bending,
As shown in Fig. 2 a, 2b.
In preferred embodiment, axial fuel passage 15 includes a spaced walls (or for an additional outer wall or straight
Connect and call it as double wall, such as 20 in Fig. 2 a-2b), the spaced walls 20 and the respective center for corresponding to axial fuel passage 15
Between 5 outer wall section of pipe, circular passage 12 be in the radial direction it is spaced apart, between 5 outer wall of spaced walls and central tube
With certain continuous distance arrangement, gap is formed, so that forming double wall between axial fuel passage 15 and central passage 11
Structure is spaced apart between axial fuel passage 15 and central passage 11 by the gap between 5 outer wall of spaced walls and central tube.
Having the advantages that one of the burner of this double-wall structure is, firstly, the double-wall structure with gap is axial fuel passage
15 provide hot decoupling function with the central passage 11 for conveying preheated oxidant, stress caused by reducing because of heat differential；Second, it burns
The stability of mouth is improved because maloperation cause to wear so as to cause the cutout of fuel medium can be first in axial direction
Occur in gap between fuel channel 15, when have it is serious destroy from double wall to conveying oxidant central passage 11 occur
When be observed that.It is greater than the wall thickness of other outer walls (such as wall) of axial fuel passage 15 preferably by the wall thickness of wall.
In some preferred embodiments, it is equipped in circular passage 12 for being enclosed axial fuel jointly with spaced walls
The wall 24 in channel 15, the wall is that is, the U-lag or C-channel being hereinbefore previously mentioned.
In a kind of specific embodiment, as shown in Figure 2 a, each axial fuel passage 15 has an independence to add outer wall
As spaced walls 20, independent additional outer wall is connected on wall 24, the spaced walls 20 be bar shaped, be limited to single axial combustion
Expect that the additional outer wall in channel 15 is constituted.Specifically, by using closed square piece and can be soldered to certain away from central tube 5
Distance and little higher position.
In another specific embodiment, as shown in Figure 2 b, by one be located at being sheathed in circular passage 12
Additional pipe 22 outside heart pipe 5 provides spaced walls 20, in radial direction there are radial spacing between the pipe 22 and central tube 5,
The wall of each axial fuel passage 15 is both connected on the outer wall of the pipe 22 and surrounds axial fuel passage 15 jointly, corresponds to
The corresponding outer wall section of pipe 22 of each axial fuel passage 15 constitutes spaced walls.Gap between the pipe and central tube 5
For playing hot decoupling function.
Additional outer wall or pipe 22 in axial fuel passage 15, on the one hand can protect the central tube 5 containing oxygen, prevent from firing
Material enters in oxygen because of worn out wall causes fire or explosion, the central tube 5 and cold coal on the other hand flowed through in preheated oxidant
An additional heat insulation layer is formd in the circular passage 12 of powder flowing.Therefore, central tube 5 can keep one in its circumferential direction
Uniform temperature, and the secondary thermal stress in conduit wall can also be reduced.
The double-wall structure as shown in Fig. 2 a or Fig. 2 b ensure that abrasion fuel powder exists when coal channel wall side is worn out
Into before central passage 11, it is introduced into circular passage 12.In both cases, mill can be removed before destroying expansion
The channel of damage, prevents it from endangering equipment safety.
In preferred embodiment, outer tube 6 is double-tube structure (or being double-wall structure), specifically, outer tube 6
Annular gap 7 is formed between outer wall and inner wall, which extends simultaneously along with the axial parallel direction of outer tube 6
Nozzle head is extended to, for providing preferably internal cooling effect to burner cooling water channel.First is connected on outer tube 6
Cooling water connecting pipe for water 4.1 and the second cooling water connecting pipe for water 4.2, the first cooling water connecting pipe for water 4.1 into annular gap 7 for supplying
Cooling water, the second cooling water connecting pipe for water 4.2 are used to for the cooling water in annular gap 7 being discharged.
The better cooling increased on burner head is such as additionally provided with partition wall 21 by following measures in annular gap 7, should
Partition wall 21 is divided into internal annular gap 7.1 and outer annular gap 7.2 for 7 entirety of annular gap, and the partition wall 21 is excellent
It is selected as a partition wall 21 concentric with outer tube 6.Wherein, internal annular gap 7.1 is in close 6 inner wall side of outer tube, i.e.,
Burner head 25 is sent into for cooling water (or coolant) in annular gap between 6 inner wall of partition wall 21 and outer tube；External rings
Shape gap 7.2 is close to 6 outer wall side of outer tube, that is, the annular gap between 6 outer wall of partition wall 21 and outer tube, being used for will
The coolant on burner head returns.Internal annular gap 7.1 and outer annular gap 7.2 connect in the position on the head close to burner
It is logical.First cooling water connecting pipe for water 4.1 is connected to internal annular gap 7.1 with cooling water supply thereto, and cooling water is by inner loop
Shape gap 7.1 flows to burner head；Second cooling water connecting pipe for water 4.2 is connected to will be therein cold with outer annular gap 7.2
But water is discharged.Cooling water flows to burner head by internal annular gap 7.1, subsequently flows into outer annular gap 7.2.In burner
The hollow shim 9 of annular is additionally provided in the annular gap 7 on head, the bottom end of partition wall 21 is connected with the hollow shim 9 of annular,
Narrow slit is formed between the outer wall of the hollow shim 9 of annular and 7 wall surface of annular gap on burner head, so that annular gap 7 is being burnt
The inner space in mouth portion is thinning, so that flow velocity of the cooling water on burner head becomes faster, obtains cooling water flow velocity faster.This is excellent
The burner of choosing has another advantage that in the annular gap of burner head zone 7 using hollow shim 9, passes through the separation
Piece reaches the flow velocity for improving the cooling water near burner head, to strengthen heat dissipation.Using hollow shim 9, because its wall is
Thin-walled reduces thermal stress, from burner head so that heating and cooling around burner head zone be made to have identical rate
Heating power behavior on for compared to using solid shim advantageously.Hollow shim 9 is towards internal annular gap 7.1
Side circumferential direction aperture 10 can keep pressure balance, the inside sky channel of hollow shim 9 in shim channel and cooling gap
It is to there is fluid to be connected with internal annular gap 7.1.
The setting of the above hollow shim 9 of annular, can extend the service life of burner, optimize cooling effect.By annular empty
The effect of heart shim 9 improves the heat exchange of cooling water so that the flow velocity of burner head coolant increases.This is practical new
Type uses hollow shim 9 rather than solid shim, to greatly reduce its cross section.In burner head zone,
It is different with a solid shim, hollow shim 9 and circular outer tube 6 at a same speed with temperature and
Become, so as to avoid because of stress deformation caused by different heat expansion.Hollow shim 9 can also use patent WO 2014/
Structure in 090481A2.Hollow shim 9 in the utility model is not top opening but in inside, therefore can give ring
The cooling fluid flowed mostly in shape gap 7 as axial, support heat dissipation and reduction temperature peak adds running through for a circumferential direction
Stream part.
The circumferential aperture 10 of a referring to fig. 4, hollow shim 9 are located at 7.1 side of internal annular gap on burner head, preferably
It is provided with the position of the upstream of fluid (cooling water) flow direction on corresponding burner head.The open interior space of shim 9 also acts as
For collecting unnecessary solid particle, to avoid the blocking of the flow clearance on burner head.Coolant is through burning
After mouth portion surrounds hollow 9 radial circulation of shim, coolant travels up to outer annular gap on the outside of hollow shim 9
7.2, coolant treatment system is returned to from burner by the second cooling water connecting pipe for water 4.2.
For raising burner mechanical stability and burner head is able to bear the pressure difference of 100bar outside coolant and burner,
Reinforcing rib 9s is additionally provided with inside the hollow shim 9 of annular.B referring to fig. 4, Fig. 4 b are the nozzle head at two different height positions
The overlapping figure of local overlooking schematic diagram is wherein the vertical view office of the nozzle head of lower position in Fig. 4 b corresponding to cross sectional portion
Portion's diagrammatic cross-section.Preferably, these reinforcing ribs 9s is that uniform be spaced apart is enclosed in the inside of shim one, and is played
From the effect of the hollow shim 9 of internal stability annular.Preferably, the circumference at 11 place reinforcing rib 9s and central passage is tangent row
Cloth, possess than simple radial gusset longer length, thus by solid frame heat transfer to the effect of the heat dissipation on burner head
Fruit is more preferable.It is furthermore preferred that these reinforcing ribs 9s extend to positioned at the annular gap 7 on burner head inner wall 7.4 and outer wall 7.3 simultaneously
It is connect respectively with the two, so, reinforcing rib 9s is extended out in the flow channel of coolant, the inner wall with burner head
It is interconnected with outer wall.The elongation of reinforcing rib 9s also forms guide face along the hollow shim 9 of annular in annular gap 7,
Radial flow is increased to the flowing composition an of slipstream.Compared to radial flow, this flow path lengthened is flowed through burner
The coolant on head brings better heat dissipation effect.In this way, effective manufacturing method of burner head construction can pass through by
Hollow shim 9 and burner head others pass element increasing material manufacturing method made in one piece.A kind of increasing material manufacturing method
It can permit and be used to prevent from containing using additional support construction between the inner wall, outer wall of hollow shim 9 and circular passage 12
The deformation for having the position of coolant to generate by heat can use thinner tube wall, thus right simultaneously because stability increases
The heat transfer effect on burner head is more preferable.Fig. 4 a, 4b illustrate a rounding end wall in hollow shim 9 and outer tube 6 it
Between have the example of extra support ailhead.
In addition, the end of annular made of high-performance high temperature resistant ferroalloy can will be used for the wearability of burner cooling position
Extremity piece is welded to the central tube 5 of circular passage 12 and outer tube 6 is located at the region that burner head especially has high temperature stress, without
Be using with for the common heatproof steel as the other positions of burner 1.
In addition, can be on burner head directly facing the position of high temperature in reaction chamber and corrosive environment, central tube 5 and outer tube
Lining one layer of refractory material or ceramic protective layer on 6.For the adhesive strength for improving refractory protection, additional reinforcement can be welded
Part such as ailhead are on pipe.Preferable ceramic protective layer construction method is plasma spraying or laser sintered.
In some specific embodiments, it is equipped with cyclone 8 in 11 lower part of central passage, so that the oxygen of 11 lower part of central passage
Agent generates the flowing part of a tangential flowing part or rotation before entering burner head；The cyclone 8 is preferably solid
Surely it is installed on inside the central tube 5 on burner head.Cyclone 8 can be inclined finned guide surface or curved guide
Piece, such as the structure shown in 20 2,014 105 403 U1 of patent DE.The distortion angle of the guide surface of cyclone 8 is root
It is determined according to actual specific needs.The guide surface of cyclone 8 also can be processed into the song that angle is gradually increased with axial flowing
Rate shape.Cyclone 8 can equally have a central through hole, for providing a part of irrotational oxidant medium to burner head
Portion.
In some embodiments, above distributor 14, it is additionally provided with the broken spigot 13 of annular, can be equipped with thereon
Structure is hindered similar to the eddy flow of sprocket shape, for hindering fuel to enter the rotation of fuel dense-phase flow, it is specific to break spigot 13
Corresponding construction known in the art can be used, this is not repeated.
In some embodiments of the utility model, burner be by dusty fuel partial oxidation process in airflow bed gasification furnace
The burner for preparing synthesis gas, referring to Fig. 1, Fig. 2 a-2b, Fig. 3, Fig. 4 a-4b:
Burner 1, including,
Outer tube 6, certain radial distance has a central tube 5 inside it, thus forms one for conveying oxygen
The central passage 11 of agent and one are for conveying the circular passage 12 of fuel to burner head；
One is used to supply a kind of connecting tube (2) of fuel, and connecting tube (2) is installed on outer tube 6, and connecting tube 2 includes
One can make fuel peripheral jet into the import of circular passage 12；
One is used to supply the connecting tube 3 of the oxidant including oxygen and steam, and connecting tube 3 is installed on central tube 5；
There is the distributor 14 that fuel is conveyed by several funnel-shaped recesses below connecting tube 2, the infundibulate is recessed
Slot is circumferentially distributed to have in annular section and in circular passage outlet, each outlet enter one be located in circular passage 12,
There is the axially vertical fuel channel 15 in approximate rectangular section, wherein the sum of the sectional area of fuel channel 15 is equivalent to fuel inlet
The sectional area at place,
Each axial fuel passage 15 enters a spiral fuel channel 19 before burner head with identical section,
Wherein
Helical duct 19 be it is by multiple identical, triangles (being approximately triangle) and interchangeable, be located at axial combustion
Expect that the screw element 16 of the lower section in channel 15 forms, screw element 16 is arranged in circular passage 12 and is led to from each other with fuel
The width in road 15 is that distance is arranged in circumferential direction.Screw element 16 is complete by the space on 12 radial cross-section direction of circular passage
Totally-enclosed, each screw element 16 is fixed upwardly by level, and by two consecutive fuel channels in circular passage 12
Gap closing between 15 outlet；The side wall 17,18 of screw element 16 and the inner surface of circular passage 12 have identical song
Wire shaped constitutes the side wall of spiral fuel channel 19, and the distance of each side wall 17,18 is the same.
In preferred some schemes, each fuel channel 15 has an additional double wall 20, with central tube 5 with certain
, continuous distance arrangement.
In preferred some schemes, outer tube 6 is designed as including the annular gap 7 cooling for inside, and for cooling down
The double-tube structure of the connecting tube 4 (4.1,4.2) of water disengaging.
In preferred some schemes, outer tube 6 includes the concentric partition wall 21 being located in annular gap 7, separates one
A internal annular gap 7.1 is sent into burner head and an outer annular gap 7.2 for cooling water and is used for burner head
Cooling water returns, and hollow point of the annular in the bottom end of the partition wall 21 in burner head and the annular gap 7 of outer tube 6
Partition 9 is connected, and the effect of shim 9 is to keep 7 inner space of annular gap on burner head thinning to obtain cooling faster
The flow velocity of water on shim 9, has circumferential aperture 10 in 7.1 side of internal annular gap.
In preferred some schemes, in central passage 11, equipped with modular, interchangeable a cyclone 8, rotation
Stream device 8 is located at the front on burner head, for axially producing one oxidant slipstream；
In preferred some schemes, central tube 5 is removably installed on outer tube 6.
The above-mentioned burner 1 of the utility model, uses especially suitable for being mounted in airflow bed gasification furnace, to dusting to dust
Size particles shape carbon-containing fuel carries out partial oxidation and prepares synthesis gas, which is preferably mounted at the top of gasification reactor chamber, from
And medium should be conveyed from top, flame is straight down.The specific structure of airflow bed gasification furnace is well known in the art, no longer superfluous
It states.The design of burner described in the utility model, the powder carry being applicable in any gasification furnace.Such as suitable for gasifying
The burner of the center arrangement of furnace, or as the burner on gasification furnace circumferentially.Preferably, it is equipped at the top of airflow bed gasification furnace
Startup burner is equipped with the burner of multiple the utility model around the startup burner, these burners are distributed on same circumference, and are opened
Work burner is located at the center point of the circumference.Each burner can be parallel or angled with the axial direction of gasification furnace；It is excellent
Selecting multiple burners to surround a startup burner is centrosymmetric arrangement, can generate a balanced reacting field in this way, fill out
Full of entire reaction chamber cross-section and can efficient generation synthesis gas.More recommend, burner arrangement is based on a center
Startup burner and three burners 1 are with hexagonal angle interval central symmetry circumferentially around the arrangement of center startup burner.Startup burner hangs down
Straight is installed on reaction chamber axis, and burner 1 can be parallel with reaction chamber axis or has certain inclination angle.Startup burner can also be whole
It closes in burner 1.
Burner 1 and startup burner recommend to be arranged in top of gasification furnace, have external water-cooling wall protection cylindrical burner seat it
In, usual burner seat is detachably accepted on an airflow bed gasification furnace reaction ceiling flange and above by reaction chamber
Water-cooling wall space closure.Burner casing can be also set on the mounting flange of burner seat, tieed up for being inserted into burner and in maintenance
Burner is extracted when repairing.It is protection burner from being influenced by high temperature, full heat-insulating material can be filled in burner inside pipe casing and guaranteed continuously
Gap, or use inert gas purge.A kind of advanced protection burner is using external cold from the method that is influenced by hot synthesis gas
But burner seat.According to said method, to have cooling liquid be usually the pipe that cooling water flows through, the helical burner seat that is installed on
Bottom.These pipes can coat one layer of thermal-protective coating.
Citing further illustrates below, is merely illustrative below, the technical solution of the utility model is not limited only to
This:
Startup burner is installed in a top center, the air-flow of the utility model burner is circumferentially installed around startup burner
In bed gasification furnace, fuel is mixed with oxygen and steam, is converted into crude synthesis gas, and gasification temperature is more than 1200 DEG C, and vapor pressure is extremely
Reach 40bar less.
The pressure rise of gasification reactor chamber is to the operating pressure that can light burner.It is a kind of by fuel and conveying gas mixing
The carbon-containing fuel of dense-phase flow form is delivered in burner 1 by the first connecting tube 2, and oxidant is delivered to burning by the second connecting tube 3
In mouth.In burner 1, fuel enters circular passage 12, and oxidant enters central passage 11, is finally delivered to burner head
25, after the release of burner head, fuel and oxidant mix and carry out partial oxidation combustion reaction.
In central passage 11, eddy flow occurs at cyclone 8 for oxidant.The form and length of flame can pass through eddy flow
The different angle of the surfaces of revolution of device 8 is adjusted.Due to the eddy flow of oxidant, free jet broadens；With from spiral fuel channel
19 fuel medium is more fully mixed, thus the available uniform oxidation reaction process in reaction zone.
Fuel then by the first fuel inlet of the connecting tube 2 through outer tube 6 it is tangential enter circular passage 12, through breaking spigot 13
It flows downward under the action of its eddy current damping effect.It is flat with hexagonal angle interval mutually there are three specially setting in this embodiment
The axial fuel passage 15 of row arrangement, sets that there are three funnel grooves and three to go out in the embodiment on distributor 14 accordingly
Mouthful；The hand of spiral of spiral fuel channel 19 is set as identical with the eddy flow direction of cyclone 8 in the embodiment.Fuel flows through brokenly rotation
Entered in three axial fuel passages 15 after device 13 by the outlet of distributor 14, fuel is in axial direction, vertical towards burning
The direction in mouth portion conveys.The fuel of each axial fuel passage 15 is directly entered corresponding spiral by the bottom of the channel outlet and fires
Expect in channel 19, since two channels are connected in junction with identical cross sectional shape, thus fuel passes through low pressure drop and minimum
Abrasion, which turns to, becomes screw fluid, later on burner head with the ejection of eddy flow shape, in combustion zone and the oxygen rotated with the same direction
Agent is sufficiently mixed.Since fuel is branched to during transportation in several assignment channels, there is buffer function, fuel is situated between
The uneven variable that matter generates during transportation can be compensated in a certain range.
It is branched to each after fuel medium flows into circular passage 12 by the first connecting tube 2 using the burner of the utility model
In axial fuel passage 15, continue to branch in corresponding each spiral fuel channel 19 later, have to the fluctuation of fuel conveying
There is compensating action, plays buffering effect；And spiral fuel channel 19 and axial fuel passage 15 in junction with identical section
Shape linking, can largely avoid the segregation effect and discontinuity in fuel delivery event；It is furthermore preferred that spiral is fired
The width in material channel is set as consistent with the width D of axial fuel passage, and sets the width of each axial fuel passage to
It unanimously, can be with from regardless of still flowed into spiral fuel channel 19 by axial fuel passage 15 in axial fuel passage 15
Substantially roughly the same channel cross-section conveys fuel, so that fuel medium its flow velocity on transport path is maintained at one
Almost the same and more low abrasion speed avoids that segregation effect and discontinuity common in fuel dense-phase flow occurs, can be into one
Step improves the wearability of burner.
Air flow bed gas of the burner of the utility model especially suitable for preparing synthesis gas by dusty fuel partial oxidation process
Change in furnace and uses.Dusty fuel is, for example, the solid fuel of different degrees of coalification, is such as formed and is ground by different Organic Ingredients
It is less than the coke powder of particle etc. of 2mm at diameter.
It will be understood by those skilled in the art that some repair can be made to the utility model under the introduction of this specification
Change or adjusts.These modifications or adjustment should also be as within the utility model claims limited range.
Claims (18)
1. a kind of burner for airflow bed gasification furnace, the burner includes outer tube, the central tube in outer tube, first
Connecting tube and the second connecting tube；It is logical to form annular that there are radial distances between the opposite wall surface of both outer tube and central tube
Road, the center tube cavity are formed with the central passage for oxidant to be delivered to burner head；The first connecting tube peace
Loaded on being connected on outer tube and with the circular passage, the first connecting tube, which is equipped with, can make fuel peripheral jet into circular passage
Import；Second connecting tube is installed on central tube and is connected to the central passage, for inputting into central passage
Oxidant；The axial fuel passage for conveying fuel is equipped in the circular passage；It is located at first in the circular passage to connect
The position of adapter tube lower section is equipped with distributor, corresponds to each axial fuel passage on the distributor and is equipped with outlet, and being used for will
It distributes into the fuel in circular passage to each axial fuel passage；It is characterized in that,
It is located at below axial fuel passage in the circular passage and is additionally provided with the multiple screw elements being circumferentially arranged, and by adjacent axis
It is closed to the gap between the outlet at bottom of fuel channel；It is logical to form spiral fuel that there are spacing between adjoining spiral element
Road, the equivalent width of the spacing and axial fuel passage, each axial fuel passage connect with a spiral fuel channel respectively
It connects, and the two is connected in junction with identical cross sectional shape.
2. the burner according to claim 1 for airflow bed gasification furnace, which is characterized in that each axial fuel passage is cut
The sum of area is equivalent to the area of section at the fuel inlet of outer tube.
3. the burner according to claim 2 for airflow bed gasification furnace, which is characterized in that deposited between adjoining spiral element
In a pair of opposite curved surface sidewall, and there are spacing between the opposite curved surface sidewall to form the spiral fuel channel, should
The equivalent width of spacing and the axial fuel passage between opposite curved surface sidewall.
4. the burner according to claim 1 for airflow bed gasification furnace, which is characterized in that constitute spiral fuel channel
Spacing between the side wall of adjoining spiral element is consistent；
And/or each axial fuel passage evenly spaced arrangement in circular passage；
And/or each axial fuel passage has approximate rectangular cross sectional shape；
And/or the entrance of each spiral fuel channel is located at same level；
And/or the distributor includes several funnel-shaped recesses, the funnel-shaped recesses are circumferentially distributed in circular passage, leak
Bucket shape groove is equipped with the outlet of the distributor.
5. the burner according to claim 1 for airflow bed gasification furnace, which is characterized in that correspond to and be equipped with screw element
Circular passage space in radial cross-section direction on, remaining annular except each screw element enclosing coil fuel channel is logical
Road space；
And/or it is identical and interchangeable between multiple screw elements, screw element has the shape of similar triangle, screw element
Side wall have curve shape compatible with circular passage inner surface.
6. the burner according to claim 5 for airflow bed gasification furnace, which is characterized in that the screw element is mounted on
On central tube, it is detachably connected between the central tube and outer tube.
7. the burner according to claim 1-6 for airflow bed gasification furnace, which is characterized in that the axial combustion
Expect channel include a spaced walls, the spaced walls and corresponding between the respective center pipe outer wall part of axial fuel passage in ring
The radial direction in shape channel is arranged for interval；
And/or the central passage lower part be equipped with cyclone so that the oxidant of central passage lower part enter burner head it
It is preceding to generate tangential stream part or rotation stream part.
8. the burner according to claim 7 for airflow bed gasification furnace, which is characterized in that be equipped in the circular passage
For being mutually enclosed the wall of the axial fuel passage with the spaced walls.
9. the burner according to claim 1-6 for airflow bed gasification furnace, which is characterized in that the outer tube
Outer wall and inner wall between be formed with annular gap, the annular gap is along axially parallel direction extends simultaneously with outer tube
Nozzle head is extended to, the first cooling water connecting pipe for water for the cooling water supply into annular gap is connected on the outer tube
With the second cooling water connecting pipe for water for the cooling water in annular gap to be discharged.
10. the burner according to claim 9 for airflow bed gasification furnace, which is characterized in that in the annular gap also
Equipped with partition wall, annular gap is divided into close to the internal annular gap of outer sleeve inner wall side and close to outer by the partition wall
The outer annular gap of sleeve outer wall side；The internal annular gap and outer annular gap are in the position close to burner head
Connection, first cooling water connecting pipe for water are connected to cooling water supply thereto, second cooling water with internal annular gap
Connecting tube is connected to so that cooling water therein to be discharged with outer annular gap；
The hollow shim of annular is equipped in the annular gap on burner head, the bottom end of the partition wall and the annular are hollow
Shim connection, the hollow shim of annular make the annular gap inner space on burner head is thinning so that cooling water is in burner
The flow velocity on head becomes faster；
The hollow shim of annular offers circumferential aperture in internal annular gap side.
11. the burner according to claim 10 for airflow bed gasification furnace, which is characterized in that the circumferential direction aperture is located at
The position for the upstream that fluid flows in burner head；
And/or reinforcing rib is equipped in the hollow shim of annular.
12. the burner according to claim 11 for airflow bed gasification furnace, which is characterized in that the hollow separation of annular
It is equipped with multiple reinforcing ribs being evenly spaced in piece, a circle is integrally formed between multiple reinforcing ribs；
And/or the reinforcing rib extends to the inner and outer wall of the annular gap positioned at burner head and connect respectively with the two.
13. the burner of synthesis gas is prepared in airflow bed gasification furnace by dusty fuel partial oxidation process,
Burner (1), comprising:
Outer tube (6), certain radial distance has a central tube (5) inside it, thus forms one for conveying oxygen
The central passage (11) of agent and one are for conveying the circular passage (12) of fuel to burner head；
One is used to supply a kind of connecting tube (2) of fuel, and connecting tube (2) is installed on outer tube (6), and connecting tube (2) includes
One can make fuel peripheral jet into the import of circular passage (12)；
One is used to supply the connecting tube (3) of the oxidant including oxygen and steam, and connecting tube (3) is installed on central tube (5)；
There is the distributor (14) that fuel is conveyed by several funnel-shaped recesses below connecting tube (2), the infundibulate is recessed
Slot is circumferentially distributed to have outlet in annular section and in circular passage, each outlet enters one and is located at circular passage (12)
Axially vertical fuel channel (15) that is interior, having approximate rectangular section, wherein the sum of the sectional area of fuel channel (15) is equivalent to
Sectional area at fuel inlet,
It is characterized in that, each axial fuel passage (15) enters a spiral combustion before burner head with identical section
Expect channel (19), wherein
Helical duct (19) is by multiple identical, triangles and lower section that is interchangeable, being located at axial fuel passage (15)
Screw element (16) composition, screw element (16) is arranged in circular passage (12) and from each other with fuel channel (15)
Width is distance in circumferential direction parallel arrangement,
Screw element (16) is completely enclosed by the space on circular passage (12) radial cross-section direction,
Each screw element (16) is fixed upwardly by level, and by two consecutive fuel channels in circular passage (12)
(15) the gap closing between outlet；
The side wall (17,18) of screw element (16) and the inner surface of circular passage (12) have identical curve shape, constitute
The distance of the side wall of spiral fuel channel (19), each side wall (17,18) is the same.
14. burner according to claim 13, which is characterized in that each fuel channel (15) has an additional double wall
(20), it is arranged with central tube (5) with certain, continuous distance.
15. 3 or 14 burner according to claim 1, which is characterized in that outer tube (6) is designed as including cooling for inside
Annular gap (7), and the double-tube structure of the connecting tube (4.1,4.2) for cooling water disengaging.
16. burner according to claim 15, it is characterised in that
Outer tube (6) includes the concentric partition wall (21) being located in annular gap (7), separates an internal annular gap
(7.1) burner head and an outer annular gap (7.2) are sent into for returning the cooling water on burner head for cooling water
It returns, and
The hollow separation of annular in the bottom end of the partition wall (21) in burner head and the annular gap (7) of outer tube (6)
Piece (9) is connected, and the effect of shim (9) is to keep annular gap (7) inner space on burner head thinning to obtain faster
The flow velocity of cooling water on shim (9), has circumferential aperture (10) in internal annular gap (7.1) side.
17. burner according to claim 13, which is characterized in that in central passage (11), equipped with one it is modular, can hand over
The cyclone (8) of formula is changed, cyclone (8) is located at the front on burner head, for axially producing one oxidant slipstream；
And/or central tube (5) is removably installed on outer tube (6).
18. the airflow bed gasification furnace with any one of claim 1-13 or the described in any item burners of 14-17, feature exist
In, in an airflow bed gasification furnace, 3 or more burners (1) around a center startup burner by circumferentially in
At the top of airflow bed gasification furnace, each burner is parallel or angled with gasification furnace axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202017107808.6 | 2017-12-21 | ||
| DE202017107808.6U DE202017107808U1 (en) | 2017-12-21 | 2017-12-21 | Burner for an air flow gasifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209412158U true CN209412158U (en) | 2019-09-20 |
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ID=61197583
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821087275.3U Active CN209412158U (en) | 2017-12-21 | 2018-07-10 | A kind of burner and airflow bed gasification furnace for airflow bed gasification furnace |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209412158U (en) |
| DE (1) | DE202017107808U1 (en) |
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| CN113048508A (en) * | 2021-03-10 | 2021-06-29 | 宁波连通设备集团有限公司 | Cooling device and combustion equipment |
| CN114151789A (en) * | 2022-02-09 | 2022-03-08 | 杭州宾欧新能源技术有限公司 | Burner protected by inert gas |
| CN114262629A (en) * | 2021-12-16 | 2022-04-01 | 新奥科技发展有限公司 | Nozzle, combined nozzle and coal gasifier |
| CN114877378A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Inner ring detonation combustion chamber |
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| CN110160050B (en) * | 2019-06-05 | 2020-10-30 | 中国矿业大学 | Biomass gasification gas and pulverized coal co-combustion low-nitrogen combustor |
| NL2026450B1 (en) | 2019-09-11 | 2022-02-21 | Cramwinckel Michiel | Process to convert a waste polymer product to a gaseous product |
| EP4112541A1 (en) * | 2021-06-30 | 2023-01-04 | L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Method and apparatus for regulating a flame length in a partial oxidation reactor |
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| DE102014102139A1 (en) | 2013-12-13 | 2015-06-18 | Choren Industrietechnik GmbH | Combustible dust burner and air flow gasifier for the production of synthesis gas |
| DE202014105403U1 (en) | 2014-11-11 | 2014-12-08 | Choren Industrietechnik GmbH | Swirl body and burner with swirl body |
| DE102014223938A1 (en) | 2014-11-25 | 2016-05-25 | Henkel Ag & Co. Kgaa | An agent for coloring keratinic fibers containing at least one dimeric, dicationic azo dye and at least one nonionic surfactant |
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2017
- 2017-12-21 DE DE202017107808.6U patent/DE202017107808U1/en active Active
-
2018
- 2018-07-10 CN CN201821087275.3U patent/CN209412158U/en active Active
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| CN113048508A (en) * | 2021-03-10 | 2021-06-29 | 宁波连通设备集团有限公司 | Cooling device and combustion equipment |
| CN113048508B (en) * | 2021-03-10 | 2021-11-19 | 宁波连通设备集团有限公司 | Cooling device and combustion equipment |
| CN114262629A (en) * | 2021-12-16 | 2022-04-01 | 新奥科技发展有限公司 | Nozzle, combined nozzle and coal gasifier |
| CN114151789A (en) * | 2022-02-09 | 2022-03-08 | 杭州宾欧新能源技术有限公司 | Burner protected by inert gas |
| CN114877378A (en) * | 2022-06-02 | 2022-08-09 | 清航空天(北京)科技有限公司 | Inner ring detonation combustion chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202017107808U1 (en) | 2018-01-26 |
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