CN109929595A - A kind of modified coal dust gasification burner - Google Patents
A kind of modified coal dust gasification burner Download PDFInfo
- Publication number
- CN109929595A CN109929595A CN201910369279.3A CN201910369279A CN109929595A CN 109929595 A CN109929595 A CN 109929595A CN 201910369279 A CN201910369279 A CN 201910369279A CN 109929595 A CN109929595 A CN 109929595A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- coal dust
- pipe
- cooling water
- sealing block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002817 coal dust Substances 0.000 title claims abstract description 65
- 238000002309 gasification Methods 0.000 title claims abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 72
- 239000001301 oxygen Substances 0.000 claims abstract description 72
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000003245 coal Substances 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 23
- 241001149930 Protura <class> Species 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims description 43
- 238000001816 cooling Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims 1
- 239000010432 diamond Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical compound [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The invention discloses a kind of modified coal dust gasification burners, including oxygen channel pipe and coal dust channel pipe, oxygen central passage pipe one end is set as sealing block, the coal dust channel pipe is provided on the outside of the oxygen central passage pipe, oxygen outer passage pipe is provided on the outside of the coal dust channel pipe, the oxygen outer passage pipe is connected to the oxygen central passage pipe, the sealing block is set as pyramidal structure, and the corresponding coal powder entrance of conehead, the cone bottom position of the corresponding sealing block of coal dust channel inside pipe wall is provided with arc groove, the sealing block top is provided with screw thread, the sealing block surface, DLC film is provided on arc groove.The present invention, which has, to be avoided burner broken, reduces pipe wear, directly directly can replace upgrading with existing shell technology coal dust burner, without changing the advantages of fire door is piped, is mainly used for replacing upgrading to existing shell technology coal dust burner.
Description
Technical field
The present invention relates to technical field of combustion equipment, specifically a kind of modified coal dust gasification burner.
Background technique
Country's shell dry coal powder gasification burner is two channel water-cooling jacket type gasification burner tips at present, as shown in figure 3, its center
Channel is coal dust transfer passage (102), is disposed with annular oxygen channel (101), in actual use, gasification furnace around its outside
Temperature can achieve 1600 degrees Celsius, since oxygen wraps up coal dust on the outside after oxygen and coal dust ejection, so oxygen can be with gas
Fuel gas is the problem of burner outlet port burns, burner is caused to be easy scaling loss in change furnace.
Use the burner of the patent No. 200710193983.5 mostly absolutely on the market at present, and for reducing doing for burner broken
Method be mostly carry out burner transformation, in this way for burn furnace it is original everywhere in fire door piping position will certainly make a change, in this way burning
The replacement of mouth is just inconvenient.
Summary of the invention
Aiming at the defects existing in the prior art, it is an object of the present invention to provide one kind to avoid burner broken, subtracts
Few pipe wear directly directly can replace upgrading with existing shell technology coal dust burner, without changing fire door piping.
Present invention technical solution used for the above purpose is: a kind of modified coal dust gasification burner, including oxygen
Gas tube channel and coal dust channel pipe, the oxygen channel pipe include oxygen outer passage pipe and oxygen central passage pipe, the oxygen
Gas central passage pipe one end is set as sealing block, is provided with the coal dust channel pipe on the outside of the oxygen central passage pipe, described
The oxygen outer passage pipe, the oxygen outer passage pipe and the oxygen central passage are provided on the outside of coal dust channel pipe
Pipe connection, the burner end are provided with distributor, and the center inlet of the distributor is connected to the coal dust channel pipe, described
The outlet of distributor is fixedly connected with coal nozzle, and the oxygen central passage pipe passes through the distributor and is fixedly connected with oxygen spray
Mouth is communicated with oxygen intake on the oxygen outer passage pipe, coal powder entrance, the coal dust is communicated on the coal dust channel pipe
Entrance and the oxygen central passage pipe are coaxially disposed, and the coal powder entrance is close to the sealing block, the sealing block setting
For pyramidal structure, and the corresponding coal powder entrance of conehead, the cone bottom of the corresponding sealing block of coal dust channel inside pipe wall
Position is provided with arc groove, and DLC film is provided in the arc groove inner wall surface, and the sealing block top is set
It is equipped with screw thread, is also equipped with the DLC film on the sealing block surface.
It is provided with cooling duct pipe on the outside of the oxygen outer passage pipe, is provided with cooling in the cooling duct pipe
Water intake tunnel and cooling water exhalant canal, the cooling water intake tunnel is connected to the cooling water exhalant canal, described cold
But it is communicated with cooling water inlet on water intake tunnel, is communicated with cooling water outlet on the cooling water exhalant canal.
Cooling duct, and the cooling duct and the cooling water intake tunnel and cooling water are provided in the distributor
Exhalant canal is connected.
The oxygen intake, cooling water inlet, is provided with control valve, the control on cooling water outlet at coal powder entrance
Valve is using manually controlling or one of Electronic control or a variety of.
The oxygen intake, cooling water inlet, is provided with connecting flange on cooling water outlet at coal powder entrance, described cold
But large flange is provided on the outside of tube channel.
The DLC film uses hydrogenated diamond-like carbon film.
The DLC film on the closing block surface uses 8-12 μm, the diamond-like of the arc groove inner wall surface
Film uses 18-30 μm.
The present invention has the following beneficial effects:
1. the present apparatus is different from the prior art, central passage is oxygen channel, and outer passage is coal dust channel, so that oxygen
Oxygen is internally positioned after gas is sprayed with coal dust, and coal dust is located at outside, in this way the coal dust meeting rapid dispersion in outside, to avoid
The burning of burner end point, causes burner broken；
2. the present apparatus is provided with sealing block in oxygen central passage pipe one end, and sealing block is arranged using pyramidal structure, makes
Coal dust circulation is more smooth, and coal dust channel inside pipe wall is provided with arc groove so that from sealing block drainage and on
Coal dust can be buffered by arc groove, to reduce the abrasion of coal dust channel inside pipe wall, further be set on sealing block
It is equipped with screw thread, so that coal dust forms spiral status after entering, to more preferably import coal dust channel pipe, and can also be reduced to sealing
The direct impact wear of block；
3. the present apparatus has not been changed the position of the extraneous each connecting pipe of existing shell technology coal dust burner when being improved
It sets, to can directly replace original device using the present invention, avoids the occurrence of the case where replacement is misfitted.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is detailed structure schematic diagram at A0 in Fig. 1；
Fig. 3 is existing apparatus structure diagram.
In figure: 1 coal dust channel pipe, 2 oxygen outer passage pipes, 3 oxygen central passage pipes, 4 sealing blocks, 5 distributors, 6 coals
Powder nozzle, 7 oxygen jets, 8 oxygen intakes, 9 coal powder entrances, 10 arc grooves, 11 screw threads, 12 cooling ducts pipe, 13 cooling waters
Import, 14 cooling water outlets, 15 connecting flanges, 16 large flanges.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1, Fig. 2, a kind of modified coal dust gasification burner, including oxygen channel pipe and coal dust channel pipe 1, oxygen
Tube channel includes oxygen outer passage pipe 2 and oxygen central passage pipe 3, and 3 one end of oxygen central passage pipe is set as sealing block 4,
Coal dust channel pipe 1 is provided on the outside of oxygen central passage pipe 3, the outside of coal dust channel pipe 1 is provided with oxygen outer passage pipe 2,
Oxygen outer passage pipe 2 is connected to oxygen central passage pipe 3, and burner end is provided with distributor 5, the center inlet of distributor 5
It is connected to coal dust channel pipe 1, the outlet of distributor 5 is fixedly connected with coal nozzle 6, and oxygen central passage pipe 3 is solid across distributor 5
Surely oxygen jet 7 is connected, oxygen intake 8 is communicated on oxygen outer passage pipe 2, is communicated with coal powder entrance on coal dust channel pipe 1
9, coal powder entrance 9 and oxygen central passage pipe 3 are coaxially disposed, and coal powder entrance 9, close to sealing block 4, sealing block 4 is set as taper
Structure, and the corresponding coal powder entrance 9 of conehead, it is recessed that the cone bottom position of the corresponding sealing block 4 of 1 inner wall of coal dust channel pipe is provided with arc
Slot 10 is provided with DLC film in 10 inner wall surface of arc groove, and 4 top of sealing block is provided with screw thread 11,4 table of sealing block
It is also equipped with DLC film on face, and DLC film uses hydrogenated diamond-like carbon film, and closing block surface
DLC film uses 8-12 μm, and the DLC film of 10 inner wall surface of arc groove uses 18-30 μm.
In the present invention, it is provided with cooling duct pipe 12 on the outside of oxygen outer passage pipe 2, is provided in cooling duct pipe 12 cold
But water intake tunnel and cooling water exhalant canal, cooling water intake tunnel are connected to cooling water exhalant canal, and cooling water water inlet is logical
It is communicated with cooling water inlet 13 on road, cooling water outlet 14 is communicated on cooling water exhalant canal, is provided with cooling in distributor 5
Channel, and cooling duct is connected with cooling water intake tunnel and cooling water exhalant canal, realizes and carries out effective temperature-reducing to burner；
Oxygen intake 8, cooling water inlet 13, is provided with control valve, control valve on cooling water outlet 14 at coal powder entrance 9
Using manually controlling or one of Electronic control or a variety of, with the flow rate for regulating and controlling oxygen, coal dust, cooling water on site；
Oxygen intake 8, cooling water inlet 13, is provided with connecting flange 15 on cooling water outlet 14 at coal powder entrance 9, uses
In being separately connected oxygen conveying pipe, power transportation pipe, cooling water inlet pipe road, cooling water outlet pipe road, cooling duct is managed
12 outsides are provided with large flange 16, burn furnace for device to be integrally attached to.
The working principle of the invention is: in use, oxygen sequentially enters oxygen outer passage pipe 2, oxygen by oxygen intake 8
Gas central passage pipe 3, coal dust enter coal dust channel pipe 1 by coal powder entrance 9, and later, oxygen passes through oxygen jet 7 from device
Middle part sprays, and coal dust is sprayed after distributor 5 is uniformly distributed from the coal nozzle 6 at device edge, such oxygen
Oxygen is internally positioned after spraying with coal dust, and coal dust is located at outside, the coal dust in outside then can rapid dispersion, to avoid in burner
End point burning causes burner broken, and the sealing block 4 of pyramidal structure makes coal dust circulation more smooth, and draws from sealing block 4
Stream and on coal dust can be buffered by arc groove 10, to reduce the abrasion of 1 inner wall of coal dust channel pipe, further exist
Screw thread 11 is provided on sealing block 4, so that coal dust forms spiral status after entering, so that coal dust channel pipe 1 is more preferably imported, and
The direct impact wear to sealing block 4 can also be reduced.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of modified coal dust gasification burner, including oxygen channel pipe and coal dust channel pipe (1), it is characterised in that: the oxygen
Gas tube channel includes oxygen outer passage pipe (2) and oxygen central passage pipe (3), and described oxygen central passage pipe (3) one end is set
It is set to sealing block (4), is provided with the coal dust channel pipe (1), the coal dust channel pipe on the outside of the oxygen central passage pipe (3)
(1) the oxygen outer passage pipe (2), the oxygen outer passage pipe (2) and the oxygen central passage are provided on the outside of
(3) connection is managed, the burner end is provided with distributor (5), the center inlet of the distributor (5) and the coal dust channel pipe
(1) it is connected to, the outlet of the distributor (5) is fixedly connected coal nozzle (6), and the oxygen central passage pipe (3) passes through described
Distributor (5) is fixedly connected oxygen jet (7), is communicated with oxygen intake (8), the coal on the oxygen outer passage pipe (2)
Be communicated in powder tube channel (1) coal powder entrance (9), the coal powder entrance (9) with the oxygen central passage pipe (3) is coaxial sets
It sets, and the coal powder entrance (9), close to the sealing block (4), the sealing block (4) is set as pyramidal structure, and conehead is opposite
It answers the coal powder entrance (9), the cone bottom position of the corresponding sealing block (4) of coal dust channel pipe (1) inner wall is provided with arc
Connected in star (10) is provided with DLC film, sealing block (4) the top setting in arc groove (10) inner wall surface
Have screw thread (11), is also equipped with the DLC film on sealing block (4) surface.
2. a kind of modified coal dust gasification burner according to claim 1, it is characterised in that: logical on the outside of the oxygen
It is provided with cooling duct pipe (12) on the outside of deferent (2), cooling water intake tunnel and cold is provided in the cooling duct pipe (12)
But water exhalant canal, the cooling water intake tunnel are connected to the cooling water exhalant canal, on the cooling water intake tunnel
It is communicated with cooling water inlet (13), cooling water outlet (14) is communicated on the cooling water exhalant canal.
3. a kind of modified coal dust gasification burner according to claim 1 or 2, it is characterised in that: in the distributor (5)
It is provided with cooling duct, and the cooling duct is connected with the cooling water intake tunnel and cooling water exhalant canal.
4. a kind of modified coal dust gasification burner according to claim 1, it is characterised in that: the oxygen intake (8), coal
Powder entrance (9), cooling water inlet (13) are provided with control valve on cooling water outlet (14), and the control valve is using control manually
One of system or Electronic control are a variety of.
5. a kind of modified coal dust gasification burner according to claim 1 or 2, it is characterised in that: the oxygen intake
(8), coal powder entrance (9), cooling water inlet (13), be provided with connecting flange (15), the cooling on cooling water outlet (14)
Large flange (16) are provided on the outside of tube channel (12).
6. a kind of modified coal dust gasification burner according to claim 1, it is characterised in that: the DLC film is adopted
With hydrogenated diamond-like carbon film.
7. a kind of modified coal dust gasification burner according to claim 1, it is characterised in that: the class on the closing block surface
Diamond thin uses 8-12 μm, and the DLC film of arc groove (10) inner wall surface uses 18-30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369279.3A CN109929595A (en) | 2019-05-05 | 2019-05-05 | A kind of modified coal dust gasification burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369279.3A CN109929595A (en) | 2019-05-05 | 2019-05-05 | A kind of modified coal dust gasification burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109929595A true CN109929595A (en) | 2019-06-25 |
Family
ID=66991273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910369279.3A Pending CN109929595A (en) | 2019-05-05 | 2019-05-05 | A kind of modified coal dust gasification burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109929595A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014101214U1 (en) * | 2014-03-17 | 2014-03-31 | Choren Industrietechnik GmbH | Burner for an air flow gasifier |
| WO2014082373A1 (en) * | 2012-11-28 | 2014-06-05 | 华东理工大学 | Hot oxygen jet and use thereof in gasifier |
| CN107541299A (en) * | 2017-09-14 | 2018-01-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of four-way process burner for double-section dry coal powder pressure gasifying technology |
| CN108485710A (en) * | 2018-05-30 | 2018-09-04 | 科林未来能源技术(北京)有限公司 | It is a kind of cooperation-gasified can dispose waste liquid, the gasification furnace and method of slurry and coal dust |
| WO2019029458A1 (en) * | 2017-08-08 | 2019-02-14 | 山东大学 | Pulverized coal gasification device and process for producing high calorific value gas with low residual carbon amount |
| CN109575997A (en) * | 2019-01-31 | 2019-04-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-effective gas burner and its application method with fine coal premix |
| CN109575995A (en) * | 2017-09-29 | 2019-04-05 | 天津征鑫热能设备制造有限公司 | A kind of preparation method of coal gasifier burner |
| CN109609195A (en) * | 2019-01-30 | 2019-04-12 | 陕西宏远燃烧设备有限公司 | Fine coal burner and mounting means |
| CN210765188U (en) * | 2019-05-05 | 2020-06-16 | 西安沃尔德能动科技有限公司 | Improved pulverized coal gasification burner |
-
2019
- 2019-05-05 CN CN201910369279.3A patent/CN109929595A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082373A1 (en) * | 2012-11-28 | 2014-06-05 | 华东理工大学 | Hot oxygen jet and use thereof in gasifier |
| DE202014101214U1 (en) * | 2014-03-17 | 2014-03-31 | Choren Industrietechnik GmbH | Burner for an air flow gasifier |
| WO2019029458A1 (en) * | 2017-08-08 | 2019-02-14 | 山东大学 | Pulverized coal gasification device and process for producing high calorific value gas with low residual carbon amount |
| CN107541299A (en) * | 2017-09-14 | 2018-01-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of four-way process burner for double-section dry coal powder pressure gasifying technology |
| CN109575995A (en) * | 2017-09-29 | 2019-04-05 | 天津征鑫热能设备制造有限公司 | A kind of preparation method of coal gasifier burner |
| CN108485710A (en) * | 2018-05-30 | 2018-09-04 | 科林未来能源技术(北京)有限公司 | It is a kind of cooperation-gasified can dispose waste liquid, the gasification furnace and method of slurry and coal dust |
| CN109609195A (en) * | 2019-01-30 | 2019-04-12 | 陕西宏远燃烧设备有限公司 | Fine coal burner and mounting means |
| CN109575997A (en) * | 2019-01-31 | 2019-04-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of high-effective gas burner and its application method with fine coal premix |
| CN210765188U (en) * | 2019-05-05 | 2020-06-16 | 西安沃尔德能动科技有限公司 | Improved pulverized coal gasification burner |
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