CN211011346U - Novel combustion device with blowout prevention port slagging function - Google Patents
Novel combustion device with blowout prevention port slagging function Download PDFInfo
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- CN211011346U CN211011346U CN201922074769.9U CN201922074769U CN211011346U CN 211011346 U CN211011346 U CN 211011346U CN 201922074769 U CN201922074769 U CN 201922074769U CN 211011346 U CN211011346 U CN 211011346U
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Abstract
The utility model relates to a novel burner with prevent spouting mouthful slagging scorification function, including wind powder passageway, by the wind powder spout that middle spout and perimeter high-speed wind spout constitute and by the spacing bonding area that high temperature resistant heat preservation cotton fills to be qualified. The peripheral high-speed air nozzles are arranged around the middle nozzle, and are supplied with air by a boiler bellows, so that a high-speed airflow ring with the functions of blocking ash in the boiler and avoiding nozzle slagging can be formed at the periphery of the nozzle, smooth supply of air-powder airflow and combustion stability of the boiler are ensured, and the boiler is free from restriction of coal varieties during operation; the refractory pouring material which is formed by traditional easy-to-stick slag blocks is replaced by the heat-resistant heat-preservation cotton which is not easy to stick slag, the heat insulation and the normal service life of the nozzle are guaranteed, meanwhile, the slagging phenomenon of the surface near the nozzle is avoided, the furnace is favorable for the unobstructed channeling of combustion flue gas in the furnace, the occurrence probability of furnace wall coking, heating surface abrasion or corrosion is reduced, the workload and the cost of daily shutdown maintenance are reduced, the boiler is guaranteed not to be restricted by coal types, and the practicability is high.
Description
Technical Field
The utility model relates to a boiler combustion component technical field, especially a novel burner with prevent spouting mouthful slagging scorification function, help reducing the boiler and choose for use the requirement to the coal goods kind.
Background
Based on the present distribution situation of coal resources in China, product differences and mining and transportation conditions, a plurality of boilers cannot be limited to a specific coal as a main fuel. However, in the existing boilers with different structures, the action effect of different coal types is greatly different, for example, in the power boilers in the electric power industry which are currently running, consume a large amount of coal and have a large market share, the inferior coal with low thermal efficiency, difficult ignition and poor combustion stability is mostly used as the main fuel. The inferior coal is easy to produce molten ash during the combustion process, is easy to adhere to a nozzle of a combustor and a furnace wall, leads to the blockage of the nozzle, leads the unsmooth circulation of pulverized coal airflow, influences the combustion stability of a boiler, also leads to the conditions of coking of a water-cooled wall of a hearth, abrasion or corrosion of a heated surface of the furnace wall and the like, influences the operation safety, the working stability and the normal working life of the boiler, leads to high daily outage rate of the boiler, large maintenance workload and high cost, influences the production and economic benefits of an electric power enterprise, and is not ideal from the aspects of economy and practicability. Therefore, the uncertainty of different application effects generated by different coal on the boiler results in the troubles that the boiler cannot be used freely and enterprises cannot purchase coal randomly, which has become a big problem in the industry at present. Therefore, how to start from improving the structure of the boiler burner, develop a novel combustion device which can effectively reduce or overcome the easy slagging phenomenon in the combustion process of the inferior coal and ensure that the normal operation and the reliable service life of the boiler are not limited by the variety of the fire coal, and the device has practical significance no matter from the aspects of improving the production efficiency of enterprises, saving energy, protecting environment and fully considering resources.
Disclosure of Invention
The utility model discloses a spout slagging scorification that exists is serious when overcoming current power boiler and burning and use the inferior coal kind, harm the not enough of the normal safe operation of boiler, provide one kind enable the boiler operation avoid coal-fired variety restriction, ensure safety in production, have prevent spouting novel burner of mouthful slagging scorification function.
The utility model discloses a novel burner with prevent spouting mouthful slagging scorification function mainly includes wind powder passageway, wind powder spout and spacing bonding area, characterized in that:
the air powder nozzle has the functions of preventing the nozzle from slagging and ensuring smooth air injection, and comprises a middle nozzle and a peripheral high-speed air nozzle arranged on the periphery of the middle nozzle;
the limiting adhesive tape has the functions of preventing the surface of the adhesive tape from adhering and accumulating ash slag and ensuring that airflow sprayed out of the nozzle is diffused into the furnace cavity without resistance, and is formed by high-temperature-resistant heat-preservation cotton filled in a gap between the wind powder nozzle and the furnace wall;
the air powder channel is coaxially and fixedly connected with the air powder nozzle, the air path is communicated, the air outlet end of the air powder channel is in a closed-up shape, is matched and connected with the port of the middle nozzle, and the inner surface of the air powder channel is in smooth and natural transition;
the air powder channel and the air powder nozzle are formed by casting wear-resistant heat-resistant cast iron;
the limiting bonding belt is integrally wrapped at the periphery of the wind powder nozzle and the outer surface joint of the wind powder channel and the wind powder nozzle and filled in a gap between the periphery of the wind powder nozzle and the furnace wall, and has an isolation function of fixing the limiting wind powder nozzle on the furnace wall, preventing heat in the furnace chamber from being transferred to the wind powder nozzle and ensuring that the wind powder nozzle cannot be overheated to influence the normal service life;
in addition, the peripheral high-speed air nozzles are arranged in the peripheral walls of the middle nozzle in a close manner, the high-speed air is supplied by a boiler bellows, the rated air speed is more than 35m/s, the formed high-speed jet flow directly irradiates the furnace chamber, and isolated airflow is formed at the periphery of the middle nozzle, so that molten ash in the furnace is impacted and prevented from being adhered to the end surface of the main air powder nozzle, and the normal work of the middle nozzle is ensured;
when the boiler works, air-powder airflow formed by mixing coal powder and combustion-supporting air is fed from the air-powder channel and is sprayed into the hearth through the middle nozzle, the combustion-supporting air fed from the boiler air box is sprayed out through the peripheral high-speed air nozzle to form a high-speed airflow ring surrounding the periphery of the middle nozzle to be sprayed into the hearth, molten ash in the boiler is prevented from invading and adhering to the air-powder nozzle, and the fact that slag is not bonded on the opening part and the end face of the air-powder nozzle is ensured, so that the normal work of the boiler is not influenced by the change of coal varieties is ensured.
Based on the above conception, the utility model discloses novel burner with prevent spout slagging scorification function, because set up a perimeter high-speed wind spout with construct high-speed perimeter air current circle function in burner's wind powder passway mouth periphery, can effectively block and avoid the in-furnace melting lime-ash to adhere to on the spout, prevent the spout slagging scorification, ensure the unblocked supply of wind powder air current, make the boiler operation avoid coal-fired variety restriction, ensure combustion stability; meanwhile, as the heat-resistant heat-preservation cotton with the surface not easy to stick slag is adopted in the gap between the wind powder nozzle and the furnace wall to replace the traditional refractory pouring material filling with the surface easy to stick slag and the formed larger slag block, the heat insulation and the normal working life of the wind powder nozzle are ensured, and simultaneously, the defect that the slag block is formed larger due to the fact that the fused ash slag in the furnace is adhered to the surface near the nozzle is effectively avoided, the occurrence probability of unimpeded channeling of combustion flue gas flow in the hearth is facilitated, coking of a water cooling wall of the hearth, abrasion or corrosion of a heating surface of the furnace wall and the like is reduced, and the frequency of boiler shutdown maintenance, and the workload and the cost of daily maintenance are greatly reduced. It is visible, adopt the utility model discloses the boiler burner of technical scheme development, the spout slagging scorification that exists when obviously having overcome current power boiler and having burnt with the inferior coal kind is serious, harm boiler normal safe operation's not enough, brought and enabled the boiler operation and avoided the restriction of coal-fired variety, and ensured boiler daily operating stability, fail safe nature and normal operating life, and still do benefit to the make full use of resource, reduce enterprise manufacturing cost, improve enterprise economic benefits's positive technological effect, simple structure and scientific and reasonable, job stabilization and reliable, it is the big innovation of boiler manufacturing industry really, has very strong practicality and valuable market perspective.
Drawings
Fig. 1 is a schematic diagram of the basic structure of the embodiment of the present invention;
fig. 2 is a sectional view a-a of fig. 1.
In the figure:
1. wind powder channel 11, air outlet end 2, wind powder nozzle 21 and middle nozzle
22. Perimeter high-speed air nozzle 3. limit adhesive tape
Detailed Description
The invention will be further described with reference to the accompanying drawings and exemplary embodiments.
In fig. 1 and 2, the utility model discloses a novel burner with prevent spouting mouthful slagging scorification function mainly includes wind powder passageway 1, wind powder spout 2 and spacing bonding area 3, characterized in that:
the air powder nozzle 2 has the functions of preventing nozzle slagging and ensuring smooth air injection, and comprises a middle nozzle 21 and a peripheral high-speed air nozzle 22 arranged on the periphery of the middle nozzle 21;
the limiting adhesive tape 3 has the functions of preventing the surface of the adhesive tape from adhering and accumulating ash slag and ensuring that airflow sprayed out of the nozzle is diffused into the furnace cavity without resistance, and is formed by high-temperature-resistant heat-preservation cotton filled in a gap between the air powder nozzle 2 and the furnace wall;
the air powder channel 1 is coaxially and fixedly connected with the air powder nozzle 2 and is communicated with the air path, the air outlet end 11 is in a closed shape and is matched and connected with the port of the middle nozzle 21, and the inner surface of the middle nozzle is in smooth and natural transition;
the air powder channel 1 and the air powder nozzle 2 are formed by casting wear-resistant heat-resistant cast iron;
the limiting bonding belt 3 is integrally wrapped and arranged at the periphery of the wind powder nozzle 2 and the outer surface joint of the wind powder channel 1 and the wind powder nozzle 2 and filled in a gap between the periphery of the wind powder nozzle 2 and the furnace wall, and has an isolation function of fixing the limiting wind powder nozzle 2 on the furnace wall, preventing heat in the furnace chamber from being transferred to the wind powder nozzle 2 and ensuring that the wind powder nozzle 2 cannot be overheated to influence the normal service life;
in addition, the peripheral high-speed air nozzles 22 are arranged in the peripheral walls of the middle nozzle 21, the high-speed air is supplied by a boiler wind box, the rated wind speed is more than 35m/s, the formed high-speed jet flow is directly irradiated into the furnace chamber, and isolated airflow is formed at the periphery of the middle nozzle 21, so that molten ash in the furnace is impacted and prevented from being adhered to the end surface of the main air powder nozzle 2, and the normal operation of the middle nozzle 21 is ensured;
when the boiler works, air-powder airflow formed by mixing coal powder and combustion-supporting air is fed from the air-powder channel 1 and is sprayed into a hearth through the middle nozzle 21, the combustion-supporting air fed from a boiler air box is sprayed out through the peripheral high-speed air nozzle 22 to form a high-speed airflow ring surrounding the periphery of the middle nozzle 21 and is sprayed into the hearth, molten ash in the boiler is prevented from invading and adhering to the air-powder nozzle 2, and the end part and the end surface of the air-powder nozzle 2 are prevented from slagging, so that the normal work of the boiler is not influenced by the change of coal varieties.
Claims (2)
1. The utility model provides a novel burner with prevent spouting mouthful slagging scorification function, mainly includes wind powder passageway (1), wind powder spout (2) and spacing bonding area (3), its characterized in that:
the wind powder nozzles (2) comprise a middle nozzle (21) and a peripheral high-speed wind nozzle (22) which is arranged on the periphery of the middle nozzle (21) and communicated with a boiler air box gas path;
the limiting adhesive tape (3) is formed by high-temperature-resistant heat-preservation cotton filled in a gap between the wind powder nozzle (2) and the furnace wall;
the air powder channel (1) is coaxially and fixedly connected with the air powder nozzle (2) and is communicated with the air path, the air outlet end (11) is in a closed-up shape and is matched and connected with the port of the middle nozzle (21), and the inner surface is smooth and naturally transited;
the air powder channel (1) and the air powder nozzle (2) are formed by casting wear-resistant heat-resistant cast iron;
the limiting bonding belt (3) is integrally wrapped at the periphery of the wind powder nozzle (2) and the appearance joint of the wind powder channel (1) and the wind powder nozzle (2) and is filled in a gap between the periphery of the wind powder nozzle (2) and the furnace wall.
2. The new type combustion device with blowout prevention and slag bonding function according to claim 1 is characterized in that the peripheral high-speed wind jet nozzles (22) are arranged in the peripheral wall of the middle jet nozzle (21) in the side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922074769.9U CN211011346U (en) | 2019-11-27 | 2019-11-27 | Novel combustion device with blowout prevention port slagging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922074769.9U CN211011346U (en) | 2019-11-27 | 2019-11-27 | Novel combustion device with blowout prevention port slagging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211011346U true CN211011346U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922074769.9U Expired - Fee Related CN211011346U (en) | 2019-11-27 | 2019-11-27 | Novel combustion device with blowout prevention port slagging function |
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| CN (1) | CN211011346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822419A (en) * | 2019-11-27 | 2020-02-21 | 上海交通大学 | Novel combustion device with blowout prevention port slagging function |
-
2019
- 2019-11-27 CN CN201922074769.9U patent/CN211011346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822419A (en) * | 2019-11-27 | 2020-02-21 | 上海交通大学 | Novel combustion device with blowout prevention port slagging function |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20201127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |