CN202267059U - Pressure gasification burner nozzle - Google Patents
Pressure gasification burner nozzle Download PDFInfo
- Publication number
- CN202267059U CN202267059U CN2011202599828U CN201120259982U CN202267059U CN 202267059 U CN202267059 U CN 202267059U CN 2011202599828 U CN2011202599828 U CN 2011202599828U CN 201120259982 U CN201120259982 U CN 201120259982U CN 202267059 U CN202267059 U CN 202267059U
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- fin
- coal
- water
- gasification burner
- slurry
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Abstract
The utility model relates to a pressure gasification burner nozzle, which is specially characterized in that a fin is arranged at a spout of a pressure gasification burner nozzle for water-coal-slurry, so as to eliminate the weak link of the conventional spout. Moreover, the fin structure facilitates releasing the stress generated by temperature difference. The pressure gasification burner nozzle has the advantages that the performance of a stress releasing ring (i.e. the fin) to release stress on a sharp edge of a surface exposed to the fire is brought into full play; and cracks at the head part of the nozzle are remarkably reduced; in particular, the key problem that the service life is not matched with the regular shut down time for the gasification of the water-coal-slurry is solved.
Description
Technical field
The utility model relates to the burner or the employed shower nozzle of burner of a kind of gasification furnace or reburner, relates in particular to a kind of water coal slurry pressure gasification burner shower nozzle.
Background technology
In the existing coal water slurry gasification technology, with the technology comparative maturity of Texaco and 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; 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; 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, but the deficiency of self is also arranged:
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; Wearing and tearing have been increased to second layer passage water coal slurry pressure gasification burner shower nozzle; Life-span was generally 30～60 days, therefore must often change;
(2) cooling water pressure is lower; Coolant water temperature is lower, causes counter-fire face thermal (temperature difference) stress bigger, has easy weak link in the outermost layer channel outlet; In use be prone to the radial cracking of circumferential distribution here; Finally cause the counter-fire face to be revealed, the counter-fire face component life-span was generally 30～60 days, had a strong impact on the long-term operation of gasification furnace.
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; It has solved that high speed oxygen quickens water-coal-slurry and the problem that makes water-coal-slurry shower nozzle easy abrasion; Water-coal-slurry just receives the bump of center oxygen behind the ejection burner; The water-coal-slurry shower nozzle is had protective effect, still do not solve, have a strong impact on the long-term operation of gasification furnace but the counter-fire face produces the problem of circumferential distribution radial cracking.
Summary of the invention
The purpose of the utility model is to provide a kind of pressurized gasification burner shower nozzle, and it has solved the technical problem that water coal slurry pressure gasification burner counter-fire face in the background technology produces circumferential distribution radial cracking.
The technical solution of the utility model is:
A kind of pressurized gasification burner shower nozzle, its special character are that the spout of pressurized gasification burner shower nozzle is provided with fin.Eliminate original spout weak link thereby reach, and fin structure helps discharging the stress that produces because of temperature contrast.
Above-mentioned fin is the conial ring shape fin.
The advantage of the utility model is: given full play to the Stress Release ring, i.e. fin discharges the ability of counter-fire face point limit stress, has significantly reduced the generation of burner head crackle.Especially solved the unmatched key issue of the regular furnace outage time of service life and coal water slurry gasification.
Description of drawings
The structural representation of Fig. 1 the utility model.
The specific embodiment
Specify below in conjunction with accompanying drawing.
A kind of pressurized gasification burner shower nozzle, its special character are that the spout of pressurized gasification burner shower nozzle is provided with fin 1.Eliminate original spout weak link thereby reach, and fin structure helps discharging the stress that produces because of temperature contrast.
In actual use, the fin hull-skin temperature is higher, and internal surface temperature is lower; The cooling water temperature of adding in the cooling water cavity is lower, so thermal (temperature difference) stress is bigger, fin one end is fixed; The other end is in free state, utilizes the high temperature wilfulness of material that thermal (temperature difference) stress is played cushioning effect.
Claims (2)
1. a pressurized gasification burner shower nozzle is characterized in that, the spout of pressurized gasification burner shower nozzle is provided with fin.
2. pressurized gasification burner shower nozzle according to claim 1 is characterized in that said fin is the conial ring shape fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202599828U CN202267059U (en) | 2011-07-21 | 2011-07-21 | Pressure gasification burner nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202599828U CN202267059U (en) | 2011-07-21 | 2011-07-21 | Pressure gasification burner nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267059U true CN202267059U (en) | 2012-06-06 |
Family
ID=46157854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202599828U Expired - Lifetime CN202267059U (en) | 2011-07-21 | 2011-07-21 | Pressure gasification burner nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202267059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332651A (en) * | 2013-06-20 | 2013-10-02 | 中石化宁波工程有限公司 | Method for preventing harp-type converter lower gas collection branch tube from thermal deformation |
-
2011
- 2011-07-21 CN CN2011202599828U patent/CN202267059U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332651A (en) * | 2013-06-20 | 2013-10-02 | 中石化宁波工程有限公司 | Method for preventing harp-type converter lower gas collection branch tube from thermal deformation |
| CN103332651B (en) * | 2013-06-20 | 2015-07-08 | 中石化宁波工程有限公司 | Method for preventing harp-type converter lower gas collection branch tube from thermal deformation |
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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 |
Granted publication date: 20120606 |
|
| CX01 | Expiry of patent term |