CN202109475U - Burner for coal water slurry pressurized gasified furnace - Google Patents
Burner for coal water slurry pressurized gasified furnace Download PDFInfo
- Publication number
- CN202109475U CN202109475U CN2011202042212U CN201120204221U CN202109475U CN 202109475 U CN202109475 U CN 202109475U CN 2011202042212 U CN2011202042212 U CN 2011202042212U CN 201120204221 U CN201120204221 U CN 201120204221U CN 202109475 U CN202109475 U CN 202109475U
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- coal
- water
- slurry
- oxygen
- annular space
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Abstract
The utility model relates to a combined burner for a coal water slurry pressurized gasified furnace. The burner comprises a central oxygen passage positioned in the center of the burner, a coal water slurry passage encircling the central oxygen passage, an annular space oxygen passage encircling the coal water slurry passage, an air interlayer encircling the annular space oxygen passage, a protective steam passage encircling the air interlayer, and a cooling system encircling the protective steam passage; and the cooling system comprises a cooling cavity, a cooling water delivery pipeline and a cooling water mounting flange. The burner is characterized in that: the cooling water delivery pipeline is a spiral cooling water delivery pipeline, and the reflux pipeline is a spiral reflux pipeline. The burner solves the technical problems that a coal water slurry nozzle is easily abraded, radial cracks are distributed in the circumferential direction of the counter-fire surface and the gasified furnace has short service life in the background technology. The coal water slurry nozzle is made of hard alloy, and the hard alloy has high-temperature abrasion resistance, so abrasion of the coal water slurry nozzle is reduced.
Description
Technical field
The utility model relates to a kind of burner, relates in particular to a kind of coal water slurry pressurized gasifier cell burner that is used for.
Background technology
In the existing coal water slurry gasification technology, with the technology comparative maturity of Texaco Oil (Texaco) with East China University of Science, application is comparatively extensive at home, and both have their own characteristics each aspect burner design.
The Texaco gasification furnace burner is fuel with the water-coal-slurry, and this burner is divided into three layers of passage, and the central passage medium is an oxygen, and second layer channel media is a water-coal-slurry, and the outermost layer channel media is an oxygen.Wherein central passage is shunk 50～150mm in burner, and every gasification furnace uses a burner, is positioned at top of gasification furnace.The burner of this structure is very ripe,
Its defective is following:
The bump of the oxygen that the water-coal-slurry center that receives that (1) low speed flows in the pipe sprays at a high speed; Cause water-coal-slurry and central oxygen gas mixture flowing velocity to increase substantially; Increased wearing and tearing, therefore must often change easy-abrasion part (the wearing terrain life-span was generally 30～60 days) second layer channel water coal slurry shower nozzle;
(2) cooling water pressure is lower; Coolant water temperature is lower; Cause counter-fire face thermal (temperature difference) stress bigger; There is sharp limit weak link in the outermost layer channel outlet, in use is prone to the radial cracking of circumferential distribution here, finally cause the counter-fire face to reveal the service life of (the counter-fire face component life-span was generally 30～60 days) adversely affecting its combustion device.
East China University of Science's gasification furnace burner is fuel with the water-coal-slurry, and this burner is divided into three layers of passage, and the central passage medium is an oxygen; Second layer channel media is a water-coal-slurry; The outermost layer channel media is an oxygen, and every gasification furnace uses four burners, is positioned at gasification furnace middle part symmetric arrangement.
The burner of this structure is ripe more, and it has solved that high speed oxygen quickens water-coal-slurry and the problem that makes water-coal-slurry shower nozzle easy abrasion, and water-coal-slurry just receives the bump of center oxygen behind the ejection burner, the water-coal-slurry shower nozzle is had protective effect.But the counter-fire face produces the problem of circumferential distribution radial cracking and does not still solve, and has a strong impact on the service life of gasification furnace.
Summary of the invention
The purpose of the utility model is to provide a kind of coal water slurry pressurized gasifier burner, and it has solved the technical problem that the water-coal-slurry shower nozzle is easy to wear in the background technology, the counter-fire face circumferentially distributes radial cracking, gasification furnace weak point in service life.
The technical solution of the utility model is:
A kind of coal water slurry pressurized gasifier burner comprises: be positioned at the center oxygen channel at burner center,
Water-coal-slurry passage around the setting of said center oxygen channel; Annular space oxygen channel around said water-coal-slurry passage setting; Air blanketing around said annular space oxygen channel setting; The protection steam channel that is provided with around said air blanketing, and around the cooling system of said protection steam channel;
Said center oxygen channel comprises central oxygen gas jets, center oxygen mounting flange and is communicated with said central oxygen gas jets and the center oxygen conveying pipe of said center oxygen mounting flange;
Said water-coal-slurry passage comprises coal-water slurry nozzle, water-coal-slurry mounting flange and is communicated with said coal-water slurry nozzle and the water-coal-slurry conveyance conduit of said water-coal-slurry mounting flange;
Said annular space oxygen channel comprises annular space oxygen jet, annular space oxygen mounting flange and is connected said annular space oxygen jet and the annular space oxygen conveying pipe of said annular space oxygen mounting flange;
Said protection steam channel comprises protection steam jet, protection steam mounting flange and the steam conveying pipe that is connected said protection steam jet and said protection steam mounting flange;
Said cooling system comprise be positioned at the cooling chamber that is provided with around the outlet of said protection steam jet, around the setting of said protection steam channel and be communicated in the cooling water conveyance conduit of said cooling chamber initiating terminal, around the setting of said protection steam channel and connection reflux line and the cooling water mounting flange that is connected said cooling water conveyance conduit and said reflux line with said cooling chamber terminal; The water vapour of protection steam channel ejection can effectively reduce the temperature contrast of said cooling chamber surfaces externally and internally, reduces thermal (temperature difference) stress, has effectively protected burner;
Its special character is, said cooling water conveyance conduit is a screw type cooling water conveyance conduit, and said reflux line is the screw type reflux line.
The utility model improvement further is: said center oxygen conveying pipe is provided with center oxygen adpting flange., can the part that need repairing be dismantled individually and keeped in repair, and can not exert an influence during oxygen conveying pipe in the maintenance center other parts.
The utility model improvement further is: said water-coal-slurry conveyance conduit is provided with the water-coal-slurry adpting flange.
The utility model improvement further is: said annular space oxygen conveying pipe is provided with annular space oxygen adpting flange.
The utility model improvement further is: said coal-water slurry nozzle inner surface and exit can significantly improve the anti-wear performance of water-coal-slurry shower nozzle with hard alloy layer.
The utility model improvement further is: on the said protection steam channel burner mounting flange is installed.
The utility model improvement further is: said cooling water mounting flange is 2.
The utility model has the advantages that:
1. the utility model coal-water slurry nozzle has adopted carbide alloy, and carbide alloy has wear resistance at elevated temperature, has reduced the wearing and tearing of coal-water slurry nozzle.
2. the utility model has been avoided reformed gas burning at the burner nozzle place of backflow in annular space oxygen and the stove, has reduced counter-fire face surfaces externally and internally temperature difference, and the temperature difference that the counter-fire face is received has been answered little, has improved the service life of cooling water cavity.
3. carbide alloy has good refrigerating function in the utility model, and counter-fire face thermal (temperature difference) stress is less, makes prolong the service life of gasification furnace, above 4000 hours.
4. the regular furnace outage time of the service life of burner and coal water slurry gasification is complementary.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the head partial schematic diagram of the utility model;
The specific embodiment
A kind of coal water slurry pressurized gasifier burner comprises: be positioned at the center oxygen channel 1 at burner center,
Water-coal-slurry passage 2 around 1 setting of said center oxygen channel; Annular space oxygen channel 3 around said water-coal-slurry passage 2 settings; Air blanketing 4 around said annular space oxygen channel 3 settings; The protection steam channel 5 that is provided with around said air blanketing 4, and around the cooling system 6 of said protection steam channel 5; Said center oxygen channel 1 comprises central oxygen gas jets 101, center oxygen mounting flange 102 and is communicated with the center oxygen conveying pipe 103 of said central oxygen gas jets 101 and said center oxygen mounting flange 102; Center oxygen conveying pipe 103 is provided with center oxygen adpting flange 104., can the part that need repairing be dismantled individually and keeped in repair, and can not exert an influence during oxygen conveying pipe in the maintenance center other parts.Said water-coal-slurry passage 2 comprises coal-water slurry nozzle 201, water-coal-slurry mounting flange 202 and is communicated with the water-coal-slurry conveyance conduit 203 of said coal-water slurry nozzle 201 and said water-coal-slurry mounting flange 202; Said coal-water slurry nozzle 201 inner surfaces and exit can significantly improve the anti-wear performance of water-coal-slurry shower nozzle with the carbide alloy wear-resistant material layer.Said water-coal-slurry conveyance conduit 203 is provided with water-coal-slurry adpting flange 204.Said annular space oxygen channel 3 comprises annular space oxygen jet 301, annular space oxygen mounting flange 302 and is connected the annular space oxygen conveying pipe 303 of said annular space oxygen jet 301 and said annular space oxygen mounting flange 302; Said annular space oxygen conveying pipe 303 is provided with annular space oxygen adpting flange 304.Said protection steam channel 5 comprises protection steam jet 501, protection steam mounting flange 502 and is connected the steam conveying pipe 503 of said protection steam jet 501 with said protection steam mounting flange 502; On the said protection steam channel 5 burner mounting flange 504 is installed.Said cooling system 6 comprise be positioned at the cooling chamber 601 that is provided with around 501 outlets of said protection steam jet, around said protection steam channel 5 be provided with and be communicated in the cooling water conveyance conduit 602 of said cooling chamber 6 initiating terminals, around the reflux line 603 at said protection steam channel 5 settings and connection and said cooling chamber 601 terminals be connected the cooling water mounting flange 604 of said cooling water conveyance conduit 602 and said reflux line 603; Cooling water mounting flange 604 is 2.The water vapour 505 of protection steam channel 5 ejections can effectively reduce the temperature contrast of said cooling chamber 6 surfaces externally and internallies, reduces thermal (temperature difference) stress, has effectively protected burner; Its special character is, said cooling water conveyance conduit 602 is screw type cooling water conveyance conduits, and said reflux line 603 is screw type reflux lines.
In use; Center oxygen is sprayed by center oxygen nozzle 101 through center oxygen channel 1; And with mix earlier at burner head through water-coal-slurry passage 2 and by the water-coal-slurry of water-coal-slurry shower nozzle 201 ejection; Again with through annular space oxygen channel 3 and by the annular space oxygen mix of annular space oxygen nozzle 301 ejection, spray into burner hearth and burning with the mode of high-speed jet.
Claims (7)
1. coal water slurry pressurized gasifier burner comprises: be positioned at the center oxygen channel at burner center,
Water-coal-slurry passage around the setting of said center oxygen channel; Annular space oxygen channel around said water-coal-slurry passage setting; Air blanketing around said annular space oxygen channel setting; The protection steam channel that is provided with around said air blanketing, and around the cooling system of said protection steam channel;
Said center oxygen channel comprises central oxygen gas jets, center oxygen mounting flange and is communicated with said central oxygen gas jets and the center oxygen conveying pipe of said center oxygen mounting flange;
Said water-coal-slurry passage comprises coal-water slurry nozzle, water-coal-slurry mounting flange and is communicated with said coal-water slurry nozzle and the water-coal-slurry conveyance conduit of said water-coal-slurry mounting flange;
Said annular space oxygen channel comprises annular space oxygen jet, annular space oxygen mounting flange and is connected said annular space oxygen jet and the annular space oxygen conveying pipe of said annular space oxygen mounting flange;
Said protection steam channel comprises protection steam jet, protection steam mounting flange and the steam conveying pipe that is connected said protection steam jet and said protection steam mounting flange;
Said cooling system comprise be positioned at the cooling chamber that is provided with around the outlet of said protection steam jet, around the setting of said protection steam channel and be communicated in the cooling water conveyance conduit of said cooling chamber initiating terminal, around the setting of said protection steam channel and connection reflux line and the cooling water mounting flange that is connected said cooling water conveyance conduit and said reflux line with said cooling chamber terminal;
Its special character is, said cooling water conveyance conduit is a screw type cooling water conveyance conduit, and said reflux line is the screw type reflux line.
2. coal water slurry pressurized gasifier burner according to claim 1 is characterized in that: said center oxygen conveying pipe is provided with center oxygen adpting flange.
3. coal water slurry pressurized gasifier burner according to claim 1 and 2 is characterized in that: said water-coal-slurry conveyance conduit is provided with the water-coal-slurry adpting flange.
4. coal water slurry pressurized gasifier burner according to claim 3 is characterized in that: said annular space oxygen conveying pipe is provided with annular space oxygen adpting flange.
5. coal water slurry pressurized gasifier burner according to claim 4 is characterized in that: said coal-water slurry nozzle inner surface and exit are with hard alloy layer.
6. coal water slurry pressurized gasifier burner according to claim 5 is characterized in that: on the said protection steam channel burner mounting flange is installed.
7. coal water slurry pressurized gasifier burner according to claim 6 is characterized in that: said cooling water mounting flange is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202042212U CN202109475U (en) | 2011-06-16 | 2011-06-16 | Burner for coal water slurry pressurized gasified furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202042212U CN202109475U (en) | 2011-06-16 | 2011-06-16 | Burner for coal water slurry pressurized gasified furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202109475U true CN202109475U (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202042212U Expired - Lifetime CN202109475U (en) | 2011-06-16 | 2011-06-16 | Burner for coal water slurry pressurized gasified furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202109475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278753A (en) * | 2011-06-16 | 2011-12-14 | 西安拓沃能动科技有限公司 | Combustor for water-coal-slurry pressurized gasifier |
-
2011
- 2011-06-16 CN CN2011202042212U patent/CN202109475U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278753A (en) * | 2011-06-16 | 2011-12-14 | 西安拓沃能动科技有限公司 | Combustor for water-coal-slurry pressurized gasifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |