CN102278753A - Combustor for water-coal-slurry pressurized gasifier - Google Patents
Combustor for water-coal-slurry pressurized gasifier Download PDFInfo
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- CN102278753A CN102278753A CN201110162920XA CN201110162920A CN102278753A CN 102278753 A CN102278753 A CN 102278753A CN 201110162920X A CN201110162920X A CN 201110162920XA CN 201110162920 A CN201110162920 A CN 201110162920A CN 102278753 A CN102278753 A CN 102278753A
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Abstract
The invention relates to a combined combustor for a water-coal-slurry pressurized gasifier, which comprises a center oxygen channel positioned at the center of the combustor, a water-coal-slurry channel arranged around the center oxygen channel, an annular space oxygen channel arranged around the water-coal-slurry channel, an air interlayer arranged around the annular space oxygen channel, a protection steam channel arranged around the air interlayer, and a cooling system arranged around the protection steam channel, wherein the cooling system comprises a cooling cavity, a cooling water conveying pipeline and a cooling water installing flange. The combined combustor is characterized in that the cooling water conveying pipeline is a helical cooling water conveying pipeline, and a reflow pipeline is a helical reflow pipeline. The invention solves the problems of easiness in abrasion of a water-coal-slurry nozzle, radial cracks circumferentially distributed on a counter firing surface and short service life of the gasifier in the prior art. The water-coal-slurry is made of a hard alloy with a high-temperature wear resistance, thus abrasion of the water-coal-slurry nozzle is reduced.
Description
Technical field
The present invention relates to a kind of burner, relate 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 as follows:
(1) water-coal-slurry that low speed flows in the pipe is subjected to the bump of the oxygen that the center 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 be prone to the radial cracking of circumferential distribution herein, 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 high speed oxygen and has quickened water-coal-slurry and make the easy wear problems of water-coal-slurry shower nozzle, and water-coal-slurry just is subjected to 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 object of the present invention is to provide a kind of coal water slurry pressurized gasifier burner, 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.
Technical solution of the present invention 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 described center oxygen channel, annular space oxygen channel around described water-coal-slurry passage setting, air blanketing around described annular space oxygen channel setting, the protection steam channel that is provided with around described air blanketing, and around the cooling system of described protection steam channel;
Described center oxygen channel comprises central oxygen gas jets, center oxygen mounting flange and is communicated with described central oxygen gas jets and the center oxygen conveying pipe of described center oxygen mounting flange;
Described water-coal-slurry passage comprises coal-water slurry nozzle, water-coal-slurry mounting flange and is communicated with described coal-water slurry nozzle and the water-coal-slurry conveyance conduit of described water-coal-slurry mounting flange;
Described annular space oxygen channel comprises annular space oxygen jet, annular space oxygen mounting flange and is connected described annular space oxygen jet and the annular space oxygen conveying pipe of described annular space oxygen mounting flange;
Described protection steam channel comprises protection steam jet, protection steam mounting flange and the steam conveying pipe that is connected described protection steam jet and described protection steam mounting flange;
Described cooling system comprise be positioned at the cooling chamber that is provided with around the outlet of described protection steam jet, around the setting of described protection steam channel and be communicated in the cooling water conveyance conduit of described cooling chamber initiating terminal, around the setting of described protection steam channel and connection reflux line and the cooling water mounting flange that is connected described cooling water conveyance conduit and described reflux line with described cooling chamber terminal; The water vapour of protection steam channel ejection can effectively reduce the temperature contrast of described cooling chamber surfaces externally and internally, reduces thermal (temperature difference) stress, has effectively protected burner;
Its special character is, described cooling water conveyance conduit is a screw type cooling water conveyance conduit, and described reflux line is the screw type reflux line.
The present invention further improves: described center oxygen conveying pipe is provided with center oxygen adpting flange.When the oxygen conveying pipe of maintenance center, the part that needs repairing can be dismantled individually and keeped in repair, and can not exert an influence other parts.
The present invention further improves: described water-coal-slurry conveyance conduit is provided with the water-coal-slurry adpting flange.
The present invention further improves: described annular space oxygen conveying pipe is provided with annular space oxygen adpting flange.
The present invention further improves: described coal-water slurry nozzle inner surface and exit are with hard alloy layer, and hard alloy layer is to be made by powder metallurgical technique by tungsten carbide powder and cobalt powder.Can significantly improve the anti-wear performance of water-coal-slurry shower nozzle.
The present invention further improves: on the described protection steam channel burner mounting flange is installed.
The present invention further improves: described cooling water mounting flange is 2.
Advantage of the present invention is:
1. coal-water slurry nozzle of the present invention 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 present invention's reformed gas of having avoided refluxing in annular space oxygen and the stove has reduced counter-fire face surfaces externally and internally temperature difference in the burning of burner nozzle place, and the temperature difference that the counter-fire face is subjected to has been answered little, has improved the service life of cooling water cavity.
3. carbide alloy has good refrigerating function among the present invention, 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 a structural representation of the present invention.
Fig. 2 is a head partial schematic diagram of the present invention;
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 described center oxygen channel, annular space oxygen channel 3 around described water-coal-slurry passage 2 settings, air blanketing 4 around described annular space oxygen channel 3 settings, the protection steam channel 5 that is provided with around described air blanketing 4, and around the cooling system 6 of described protection steam channel 5; Described 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 described central oxygen gas jets 101 and described center oxygen mounting flange 102; Center oxygen conveying pipe 103 is provided with center oxygen adpting flange 104.When the oxygen conveying pipe of maintenance center, the part that needs repairing can be dismantled individually and keeped in repair, and can not exert an influence other parts.Described 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 described coal-water slurry nozzle 201 and described water-coal-slurry mounting flange 202; Described 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.Described water-coal-slurry conveyance conduit 203 is provided with water-coal-slurry adpting flange 204.Described 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 described annular space oxygen jet 301 and described annular space oxygen mounting flange 302; Described annular space oxygen conveying pipe 303 is provided with annular space oxygen adpting flange 304.Described protection steam channel 5 comprises protection steam jet 501, protection steam mounting flange 502 and is connected the steam conveying pipe 503 of described protection steam jet 501 with described protection steam mounting flange 502; On the described protection steam channel 5 burner mounting flange 504 is installed.Described cooling system 6 comprise be positioned at the cooling chamber 601 that is provided with around 501 outlets of described protection steam jet, around described protection steam channel 5 be provided with and be communicated in the cooling water conveyance conduit 602 of described cooling chamber 6 initiating terminals, around the reflux line 603 of described protection steam channel 5 settings and connection and described cooling chamber 601 terminals be connected the cooling water mounting flange 604 of described cooling water conveyance conduit 602 and described 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 described cooling chamber 6 surfaces externally and internallies, reduces thermal (temperature difference) stress, has effectively protected burner; Its special character is, described cooling water conveyance conduit 602 is screw type cooling water conveyance conduits, and described reflux line 603 is screw type reflux lines.
In use, center oxygen is sprayed by center oxygen nozzle 101 by center oxygen channel 1, and with mix earlier at burner head by water-coal-slurry passage 2 and by the water-coal-slurry of water-coal-slurry shower nozzle 201 ejection, again with by 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 in 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 described center oxygen channel, annular space oxygen channel around described water-coal-slurry passage setting, air blanketing around described annular space oxygen channel setting, the protection steam channel that is provided with around described air blanketing, and around the cooling system of described protection steam channel;
Described center oxygen channel comprises central oxygen gas jets, center oxygen mounting flange and is communicated with described central oxygen gas jets and the center oxygen conveying pipe of described center oxygen mounting flange;
Described water-coal-slurry passage comprises coal-water slurry nozzle, water-coal-slurry mounting flange and is communicated with described coal-water slurry nozzle and the water-coal-slurry conveyance conduit of described water-coal-slurry mounting flange;
Described annular space oxygen channel comprises annular space oxygen jet, annular space oxygen mounting flange and is connected described annular space oxygen jet and the annular space oxygen conveying pipe of described annular space oxygen mounting flange;
Described protection steam channel comprises protection steam jet, protection steam mounting flange and the steam conveying pipe that is connected described protection steam jet and described protection steam mounting flange;
Described cooling system comprise be positioned at the cooling chamber that is provided with around the outlet of described protection steam jet, around the setting of described protection steam channel and be communicated in the cooling water conveyance conduit of described cooling chamber initiating terminal, around the setting of described protection steam channel and connection reflux line and the cooling water mounting flange that is connected described cooling water conveyance conduit and described reflux line with described cooling chamber terminal;
Its special character is, described cooling water conveyance conduit is a screw type cooling water conveyance conduit, and described reflux line is the screw type reflux line.
2. coal water slurry pressurized gasifier burner according to claim 1 is characterized in that: described 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: described 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: described 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: described 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 described protection steam channel burner mounting flange is installed.
7. coal water slurry pressurized gasifier burner according to claim 6 is characterized in that: described cooling water mounting flange is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110162920XA CN102278753A (en) | 2011-06-16 | 2011-06-16 | Combustor for water-coal-slurry pressurized gasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110162920XA CN102278753A (en) | 2011-06-16 | 2011-06-16 | Combustor for water-coal-slurry pressurized gasifier |
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| Publication Number | Publication Date |
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| CN102278753A true CN102278753A (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110162920XA Pending CN102278753A (en) | 2011-06-16 | 2011-06-16 | Combustor for water-coal-slurry pressurized gasifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343020A (en) * | 2013-06-08 | 2013-10-09 | 北京神雾环境能源科技集团股份有限公司 | Low-pressure pulverized coal gasification burner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479809A (en) * | 1982-12-13 | 1984-10-30 | Texaco Inc. | Apparatus for gasifying coal including a slag trap |
| CN1101113A (en) * | 1993-09-28 | 1995-04-05 | 德士古发展公司 | Partial oxidation prcess and burner with porous tip |
| CN1916493A (en) * | 2006-09-06 | 2007-02-21 | 中国船舶重工集团公司第七一一研究所 | Combustion nozzle of gasification stove of using pressed dry coal powder |
| CN101665724A (en) * | 2008-09-05 | 2010-03-10 | 绿色煤电有限公司 | Water-coal-slurry gasification method and gasification furnace |
| CN201643795U (en) * | 2010-01-06 | 2010-11-24 | 中国石油化工股份有限公司 | Novel gas-water separator for burner cooling water system of coal water slurry gasification equipment |
| CN102003711A (en) * | 2009-09-02 | 2011-04-06 | 西安拓沃能动科技有限公司 | Spout structure used for prolonging service life of reforming burner tip |
| CN202109475U (en) * | 2011-06-16 | 2012-01-11 | 西安拓沃能动科技有限公司 | Burner for coal water slurry pressurized gasified furnace |
-
2011
- 2011-06-16 CN CN201110162920XA patent/CN102278753A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479809A (en) * | 1982-12-13 | 1984-10-30 | Texaco Inc. | Apparatus for gasifying coal including a slag trap |
| CN1101113A (en) * | 1993-09-28 | 1995-04-05 | 德士古发展公司 | Partial oxidation prcess and burner with porous tip |
| CN1916493A (en) * | 2006-09-06 | 2007-02-21 | 中国船舶重工集团公司第七一一研究所 | Combustion nozzle of gasification stove of using pressed dry coal powder |
| CN101665724A (en) * | 2008-09-05 | 2010-03-10 | 绿色煤电有限公司 | Water-coal-slurry gasification method and gasification furnace |
| CN102003711A (en) * | 2009-09-02 | 2011-04-06 | 西安拓沃能动科技有限公司 | Spout structure used for prolonging service life of reforming burner tip |
| CN201643795U (en) * | 2010-01-06 | 2010-11-24 | 中国石油化工股份有限公司 | Novel gas-water separator for burner cooling water system of coal water slurry gasification equipment |
| CN202109475U (en) * | 2011-06-16 | 2012-01-11 | 西安拓沃能动科技有限公司 | Burner for coal water slurry pressurized gasified furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343020A (en) * | 2013-06-08 | 2013-10-09 | 北京神雾环境能源科技集团股份有限公司 | Low-pressure pulverized coal gasification burner |
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