CN209960522U - Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions - Google Patents
Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions Download PDFInfo
- Publication number
- CN209960522U CN209960522U CN201920763386.XU CN201920763386U CN209960522U CN 209960522 U CN209960522 U CN 209960522U CN 201920763386 U CN201920763386 U CN 201920763386U CN 209960522 U CN209960522 U CN 209960522U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- shock wave
- long
- nozzle
- pipeline
- 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.)
- Active
Links
Images
Landscapes
- Chimneys And Flues (AREA)
Abstract
A long-nozzle shock-wave soot blower with cooling and soot deposition preventing functions belongs to the technical field of boiler soot blowing and comprises a distribution ignition device, an ignition pipeline, a shock wave generator, a long nozzle, a furnace wall, a flue gas pipeline, a flue gas dedusting and purifying system, an induced draft fan, a chimney, a clean flue gas pipeline, a clean flue gas control valve and a clean flue gas one-way valve. In the utility model, the long spray pipe penetrates through the furnace wall and is arranged in the flue, and the bottom of the long spray pipe is symmetrically provided with a plurality of nozzles with gradually changed sizes, so that the whole area coverage of soot blowing and the uniform distribution of shock wave energy can be realized; the clean flue gas pipeline can introduce the clean flue gas after purification treatment into the shock wave generator, continuous air inlet flow is formed in the shock wave generator and the long spray pipe by utilizing negative pressure in a flue and micro-positive pressure at an outlet of the induced draft fan, dust-containing flue gas is prevented from entering the long spray pipe and the shock wave generator, the problems of dust deposition, coking, blockage and the like are prevented, and meanwhile, the clean flue gas with lower temperature plays a certain cooling role on the long spray pipe in the high-temperature flue.
Description
Technical Field
The utility model relates to a boiler blows grey technical field's soot blower, especially a can prevent that dusty flue gas gets into the long spray tube, pipeline and the long spray tube shock wave soot blower who possesses the cooling and prevent the deposition function in the shock generator.
Background
In the field of energy and environmental protection, various industrial boilers are widely applied, such as pulverized coal boilers, circulating fluidized bed boilers, waste heat furnaces, process furnaces, biomass boilers, garbage incinerators and the like. During the operation of the boilers, the heating surfaces of convection banks of the boilers are generally easy to generate dust deposition, so that the smoke resistance is increased, the smoke exhaust temperature is increased, the heat efficiency of the boilers is reduced, and the normal operation of the boilers is seriously influenced.
The shock wave soot blower, also called as gas pulse soot blower, is produced by using acetylene (coal gas, natural gas, liquefied gas) and other common combustible gas and air, and through respective flow rate measuring and controlling system, mixing in certain proportion and burning in a combustor. Different from the conventional combustion process and combustion mode, the gas pulse combustion utilizes unstable combustion gas to generate compression waves in a high turbulence state to form kinetic energy, sound energy and heat energy. The combustion speed is high, the pressure of gas generated by combustion is limited within a certain range, and the shock wave energy emitted at the nozzle of the output pipe is adapted to the ash deposition condition. The dust on the heated surface is fallen off by the action of the shock wave, and dust particles, loose objects, adhesive objects and deposits on the polluted heated surface are removed.
The traditional shock wave soot blower spray pipe is a short spray pipe, only a single nozzle is generally arranged, the soot deposition area is covered by the cutting of the nozzle and the adjustment of the direction, the high-speed jet flow generated by the shock wave soot blower is conical, the corresponding coverage area of the single nozzle is limited, the energy of the area close to the nozzle is high, the energy of the area far away from the nozzle is low, the soot blowing effect of the position far away from the nozzle is reduced, and a certain dead-angle soot blowing dead zone exists.
In addition, because the shock wave soot blower runs discontinuously, when the shock wave soot blower stops working, smoke containing dust enters the long spray pipe and the shock wave generator, a certain amount of hardened soot is generated in the long spray pipe, the external conveying pipeline and the shock wave generator, and when the soot is seriously accumulated, a mixed gas pipeline, a mixer and the like can be blocked, so that the shock wave soot blower cannot work normally; meanwhile, because the flue gas contains water vapor, the external conveying pipeline and the shock wave generator are positioned in the atmospheric environment, the dust-containing water-containing flue gas in the flue gas is condensed on the inner wall to form accumulated water after being cooled by the environment, and because the flue gas also contains SO2 and SO3 which are very soluble in water, the accumulated water generally has strong acidity and can generate serious corrosion on the inner wall of the soot blower.
Particularly, when the spray pipe in the flue is not cooled in a high-temperature environment of more than 500 ℃ for a long time, the service life of the spray pipe can be reduced even if the high-temperature resistant stainless steel is selected. Especially, under the atmosphere that flue gas dust contains corrosive elements such as a garbage incinerator, a process boiler, a waste heat boiler and the like, accumulated dust in a spray pipe pipeline cannot be removed, and the high-temperature environment accelerates the high-temperature corrosion of the spray pipe, so that the service life is greatly shortened.
Aiming at the phenomenon of dust deposition in a shock wave soot blower, the prior proposal of introducing air for removing the dust is that the oxygen content in the air is high, and the soot blowing of a long spray pipe needs more air, if the carbon content in the soot is higher, the soot can be ignited in a high-temperature environment, the soot can be secondarily combusted in a flue, so that the heat exchange tube bundle can be secondarily damaged, and on the other hand, the air temperature is lower, and particularly in winter in northern areas, the introduction of more air can directly influence the heat exchange of the convection heat exchange tube bundle.
Disclosure of Invention
The utility model provides a long spray pipe shock wave soot blower with cooling and dust deposition preventing functions, aiming at the defects of the prior art, not only solving the problem that the soot blowing coverage area of the short spray pipe is limited and dead angles and dead zones exist, but also solving the problems of dust deposition, coking and blockage in the long spray pipe, the conveying pipeline and the generator of the shock wave soot blower; meanwhile, the problems that the long spray pipe in the high-temperature flue cannot be cooled, the service life is shortened, air is introduced to ignite dust, the heat exchange is influenced and the like can be solved.
The utility model is realized by the following technical proposal, the utility model comprises a distribution ignition device, an ignition pipeline, a shock wave generator, a long spray pipe, a furnace wall, a convection heat exchange tube bundle, a flue gas pipeline, a flue gas dust removal and purification system, a draught fan, a chimney, a clean flue gas pipeline, a clean flue gas control valve and a clean flue gas check valve, wherein the distribution ignition device is connected with the shock wave generator through the ignition pipeline, and the two shock wave generators are symmetrically arranged; the gas outlet of the shock wave generator is connected with the gas inlet of the long spray pipe, the long spray pipe penetrates through the furnace wall and is arranged in the flue, the long spray pipe is formed by welding a left spray pipe, a right spray pipe and rigid connecting columns which are symmetrical left and right, and the bottoms of the spray pipes at the left end and the right end of the long spray pipe are symmetrically provided with a plurality of nozzles; the convection heat exchange tube bundle is arranged in the flue between the furnace walls and is positioned below the long spray pipe; a flue gas inlet of the flue gas pipeline is connected with a flue gas outlet at the bottom of the furnace wall, a flue gas outlet of the flue gas pipeline is connected with a flue gas inlet of the chimney, and the flue gas dedusting and purifying system and the induced draft fan are sequentially connected on the flue gas pipeline in series; the clean flue gas pipeline is the tee bend structure, and the entry end of clean flue gas pipeline is connected with the flue gas pipeline between draught fan, the chimney, and the exit end of clean flue gas pipeline is connected with two ignition tube ways respectively, all concatenates clean flue gas control valve, clean flue gas check valve in proper order on every clean flue gas pipeline's the outlet pipeline.
Furthermore, in the utility model, the diameter of the nozzle on the long spray pipe is increased from the furnace wall to the middle in sequence, and a chamfer is arranged at the nozzle; the length and diameter of the spray pipe and the size of the spray nozzle are determined according to the size of the flue and the dust deposition condition of the heat exchange pipe bundle.
Further, the utility model discloses in, clean flue gas is connected with ignition pipeline through clean flue gas pipeline, clean flue gas control valve and clean flue gas check valve, utilizes the negative pressure in the boiler flue and the pressure-fired that the clean flue gas of draught fan export, forms the air current that lasts in sharp wave generator and long spray tube, need not extra power equipment.
Further, the utility model discloses in, two distribution ignition, two sharp wave generators and two clean gas control valve insert same control system.
Furthermore, in the present invention, the clean flue gas control valve is an electromagnetic valve.
Furthermore, the utility model discloses in, the anticorrosive stainless steel material of high temperature resistant is chooseed for use to the long spray tube.
Compared with the prior art, the utility model discloses have following beneficial effect and do: the long spray pipe multi-nozzle structure of the utility model can realize the whole area coverage of soot blowing of the heat exchange pipe bundle without dead angles and dead zones; multiple nozzles with gradually changed sizes are distributed on the spray pipe, so that the uniform distribution of shock wave energy can be realized, and a heat exchange pipe bundle close to a furnace wall is prevented from bearing larger energy; the left and right shock wave generators work simultaneously, and the impact force during soot blowing can be effectively resisted due to the symmetrical design and rigid connection of the long spray pipes; meanwhile, the problem of dust deposition in the long spray pipe, the conveying pipeline and the shock wave generator can be effectively prevented, a certain cooling effect is particularly realized on the long spray pipe in a high-temperature environment, and the service life of the spray pipe is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the middle-long nozzle of the present invention;
FIG. 3 is an enlarged cross-sectional view taken at A in FIG. 1;
wherein: 1. the device comprises a gas distribution ignition device, 2, an ignition pipeline, 3, a shock wave generator, 4, a long spray pipe, 41, a left spray pipe, 42, a right spray pipe, 43, a rigid connecting column, 5, a furnace wall, 6, a convection heat exchange pipe bundle, 7, a flue gas pipeline, 8, a flue gas dedusting and purifying system, 9, an induced draft fan, 10, a flue pipe, 11, a clean flue gas pipeline, 12, a clean flue gas control valve, 13 and a clean flue gas one-way valve.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes, but the scope of the present invention is not limited to the following embodiments.
Examples
Fig. 1 to 3 show the specific embodiment, the utility model comprises a distribution ignition device 1, an ignition pipeline 2, a shock wave generator 3, a long spray pipe 4, a furnace wall 5, a convection heat exchange tube bundle 6, a flue gas pipeline 7, a flue gas dedusting and purifying system 8, a draught fan 9, a chimney 10, a clean flue gas pipeline 11, a clean flue gas control valve 12 and a clean flue gas check valve 13, wherein the distribution ignition device 1 is connected with the shock wave generator 3 through the ignition pipeline 2, and the two shock wave generators 3 are symmetrically arranged; the gas outlet of the shock wave generator 3 is connected with the gas inlet of the long spray pipe 4, the long spray pipe 4 penetrates through the furnace wall 5 and is arranged in the flue, the long spray pipe 4 is formed by welding a left spray pipe 41, a right spray pipe 42 and a rigid connecting column 43 which are symmetrical left and right, and a plurality of nozzles are symmetrically arranged at the bottoms of the left end and the right end of the long spray pipe 4; the convection heat exchange tube bundle 6 is arranged in the flue between the furnace walls 5 and is positioned below the long spray pipe 4; a flue gas inlet of a flue gas pipeline 7 is connected with a flue gas outlet at the bottom of the furnace wall 5, a flue gas outlet of the flue gas pipeline 7 is connected with a flue gas inlet of a chimney 10, and a flue gas dedusting and purifying system 8 and an induced draft fan 9 are sequentially connected on the flue gas pipeline 7 in series; the clean flue gas pipeline 11 is of a three-way structure, the inlet end of the clean flue gas pipeline 11 is connected with the flue gas pipeline 7 between the induced draft fan 9 and the chimney 10, the outlet end of the clean flue gas pipeline 11 is respectively connected with the two ignition pipelines 2, and a clean flue gas control valve 12 and a clean flue gas check valve 13 are sequentially connected on the outlet pipeline of each clean flue gas pipeline 11 in series.
The utility model discloses in, long spray tube 4 is by bilateral symmetry's left spray tube 41, right spray tube 42 and rigidity hookup post 43 welding are constituteed, a plurality of spouts are seted up to the bottom symmetry at both ends about long spray tube 4, the spout diameter increases in proper order from the oven to the centre, select long spray tube size and spout diameter size according to the flue size, can realize that heat exchanger tube bundle blows the whole regional cover of blowing, do not keep dead angle and blind spot, the many spouts of the big or small gradual change that distributes on the spray tube can realize shock wave energy evenly distributed, avoid bearing great energy apart from the nearer heat exchanger tube bundle of furnace wall. Furthermore, the nozzle is provided with a chamfer, which is beneficial to enlarging the coverage area of the jet airflow.
When the shock wave generator 3 stops working, the cleaning smoke control valve 12 is opened, the cleaning smoke after purification treatment is led to an ignition pipeline in front of the shock wave generator 3 through a pipeline, a circulation loop is formed by utilizing the negative pressure of a flue in the furnace wall 5 and the micro-positive pressure of the smoke at the rear end of the induced draft fan 9, the cleaning smoke with certain temperature can form a continuous air inlet flow in the shock wave generator 3 and the long spray pipe 4 without additional power equipment, and therefore the dust-containing smoke is prevented from entering the long spray pipe 4 and the shock wave generator 3, and dust accumulation is prevented. Further, when the shock wave generator 3 works, the cleaning flue gas check valve 13 can prevent the shock wave from reversely entering the cleaning flue 11, and the cleaning flue gas control valve is protected.
The left and right shock wave generators 3 are connected into the same control system and are simultaneously opened and closed, and the impact force acting on the two sides of the rigid connecting shaft 43 in the middle of the long spray pipe 4 can be counteracted.
Because the introduced clean flue gas also has a certain temperature which is generally between 120 and 160 ℃, the heat preservation effect is realized on the external conveying pipeline and the shock wave generator 3, and the influence on the heat exchange of the convection heat exchange tube bundle at the lower part of the long spray pipe 4 can be reduced.
The long spray pipe 4 is made of high-temperature-resistant anticorrosive stainless steel materials such as 310S or TP347H, and can work in an environment below 670 ℃ for a long time, so that the service life of the spray pipe is prolonged.
Because the temperature of the boiler flue gas is higher, generally between 500-.
The clean flue gas has basically the same composition as the dust-containing flue gas, and the clean flue gas has low oxygen content, and can not cause ash deposition secondary combustion or other unpredictable reactions.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (5)
1. The long-nozzle shock wave soot blower with the functions of cooling and preventing soot deposition is characterized by comprising a gas distribution ignition device (1), an ignition pipeline (2), a shock wave generator (3), a long nozzle (4), a furnace wall (5), a convection heat exchange tube bundle (6), a flue gas pipeline (7), a flue gas dedusting and purifying system (8), a draught fan (9), a chimney (10), a clean flue gas pipeline (11), a clean flue gas control valve (12) and a clean flue gas one-way valve (13), wherein the ignition device (1) is connected with a gas inlet of the shock wave generator (3) through the ignition pipeline (2), a gas outlet of the shock wave generator (3) is connected with a gas inlet of the long nozzle (4), the two shock wave generators (3) are symmetrically arranged, the long nozzle (4) penetrates through the furnace wall (5) and is arranged in a flue, and the long nozzle (4) is composed of a left nozzle (41) and a right nozzle (41) which are symmetrical, The right spray pipe (42) and the rigid connecting column (43) are welded, and a plurality of nozzles are symmetrically arranged at the bottoms of the spray pipes at the left end and the right end of the long spray pipe (4); the convection heat exchange tube bundle (6) is arranged in a flue between the furnace walls (5) and is positioned below the long spray pipe (4), a flue gas inlet of a flue gas pipeline (7) is connected with a flue gas outlet at the bottom of the furnace walls (5), a flue gas outlet of the flue gas pipeline (7) is connected with a flue gas inlet of a flue pipe (10), and a flue gas dedusting and purifying system (8) and an induced draft fan (9) are sequentially connected on the flue gas pipeline (7) in series; clean flue gas pipeline (11) are three way structure, and the entry end of clean flue gas pipeline (11) is connected with flue gas pipeline (7) between draught fan (9), chimney (10), and the exit end of clean flue gas pipeline (11) is connected with two ignition pipe way (2) respectively, all concatenates clean flue gas control valve (12), clean flue gas check valve (13) in proper order on the outlet pipeline of every clean flue gas pipeline (11).
2. The long-nozzle shock wave soot blower with the functions of cooling and preventing soot deposition as claimed in claim 1, wherein the nozzle diameter of the long nozzle (4) is increased from the furnace wall to the middle in sequence, and a chamfer is arranged at the nozzle; the length and the diameter of the long spray pipe (4) and the size of the spray opening are determined according to the size of the flue and the dust deposition condition of the convection heat exchange pipe bundle (6).
3. The long nozzle shock wave soot blower with cooling and soot deposition preventing functions as claimed in claim 1, characterized in that the two distribution ignition devices (1), the two shock wave generators (3) and the two cleaning flue gas control valves (12) are connected to the same control system.
4. The long nozzle shock wave soot blower having cooling and soot deposition preventing functions as claimed in claim 1, wherein said cleaning flue gas control valve (12) is an electromagnetic valve.
5. The long-nozzle shock wave soot blower with the functions of cooling and preventing soot deposition as claimed in claim 1, wherein the long nozzle (4) is made of high temperature resistant and corrosion resistant stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920763386.XU CN209960522U (en) | 2019-05-26 | 2019-05-26 | Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920763386.XU CN209960522U (en) | 2019-05-26 | 2019-05-26 | Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209960522U true CN209960522U (en) | 2020-01-17 |
Family
ID=69246603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920763386.XU Active CN209960522U (en) | 2019-05-26 | 2019-05-26 | Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209960522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068021A (en) * | 2019-05-26 | 2019-07-30 | 中船重工（上海）新能源有限公司 | Has long jet pipe shock wave soot blower that is cooling and preventing dust stratification function |
| CN111483663A (en) * | 2020-04-28 | 2020-08-04 | 沈阳初通次商贸有限公司 | Laboratory culture medium split charging equipment |
-
2019
- 2019-05-26 CN CN201920763386.XU patent/CN209960522U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068021A (en) * | 2019-05-26 | 2019-07-30 | 中船重工（上海）新能源有限公司 | Has long jet pipe shock wave soot blower that is cooling and preventing dust stratification function |
| CN110068021B (en) * | 2019-05-26 | 2024-04-30 | 中船重工（上海）新能源有限公司 | Long jet tube shock wave soot blower with cooling and soot deposition preventing functions |
| CN111483663A (en) * | 2020-04-28 | 2020-08-04 | 沈阳初通次商贸有限公司 | Laboratory culture medium split charging equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102537975A (en) | Circulating fluidized bed garbage incineration boiler and pollution control system with same | |
| CN209960522U (en) | Long-nozzle shock wave soot blower with cooling and soot deposition preventing functions | |
| US8234985B2 (en) | Boiler producing steam from flue gases under optimized conditions | |
| CN206771420U (en) | A kind of block-resistant type air preheater step-by-step arrangement system | |
| CN202938321U (en) | Soot blower system of pulverized coal fired boiler | |
| CN111981473A (en) | Slag burnout system and method of biomass boiler | |
| CN202074532U (en) | High concentration salt bearing organic waste liquid incinerator | |
| CN208546969U (en) | A kind of chain-grate boiler system of capacity-increasing transformation | |
| CN110068021B (en) | Long jet tube shock wave soot blower with cooling and soot deposition preventing functions | |
| CN100441952C (en) | Composite circulating fluidized bed system for high performance clean burning of urban domestic garbage | |
| CN102644930A (en) | Deashing device and method for waste incineration boiler and biomass boiler | |
| JP5498434B2 (en) | Biomass fired boiler | |
| CN202581356U (en) | Dust cleaning device for waste incineration boiler and biomass boiler | |
| RU2635947C2 (en) | Boiler and method of its operation | |
| CN219120566U (en) | Circulating fluidized bed boiler capable of burning sludge purely | |
| CN215637210U (en) | Pulverized coal fired boiler and grate furnace combined waste incineration power generation system | |
| KR101496298B1 (en) | Vertical type thermal oil boiler for refuse derived fuel | |
| CN214664476U (en) | Waste heat type solid waste treatment device | |
| CN217274133U (en) | Garbage grate furnace with smoke recirculation | |
| CN117231987B (en) | Deep low-nitrogen combustion air distribution system suitable for garbage incinerator | |
| RU120750U1 (en) | WATER BOILER | |
| CN207455915U (en) | Water-coal-slurry organic heat carrier accumulatingdust convection tube structure | |
| CN205227363U (en) | Dust removal heat absorber | |
| CN108645025B (en) | Gas hot-blast stove | |
| Vijay et al. | Optimization of soot blower operation in boiler to improve efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |