CN101876447B - Soot blower - Google Patents
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- CN101876447B CN101876447B CN201010219844A CN201010219844A CN101876447B CN 101876447 B CN101876447 B CN 101876447B CN 201010219844 A CN201010219844 A CN 201010219844A CN 201010219844 A CN201010219844 A CN 201010219844A CN 101876447 B CN101876447 B CN 101876447B
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- blowing pipe
- tube
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Abstract
The invention discloses a soot blower. The invention aims to solve the problem that the existing soot blower and soot remover spray system can not well clean adhesive soot deposited on furnace tubes in a convection section of a tube heating furnace and heat exchange tubes in an air preheater. The soot blower of the invention is provided with an air intake system, a transmission system, a soot blowing tube (93) and a bracket (5), wherein the soot blowing tube is provided with two rows of soot blowing nozzles (94) in the axial direction, and a soot remover spray tube (91) is coaxially arranged in the soot blowing tube; the soot remover spray tube is axially provided with two rows of soot remover nozzles (92), and the upper part of each soot remover nozzle extends out of the wall of the soot blowing tube; each soot remover nozzle row and the corresponding soot blowing nozzle row are in the same row, and the soot blowing nozzles and soot remover nozzles in each row are alternately arranged; and the air inlet section of the soot blowing tube is provided with an air inlet (95). The invention is mainly used in tube heating furnaces in the fields of petroleum refining and petrochemical industry.
Description
Technical field
The present invention relates to a kind of soot blower, relate to the soot blower of the dust stratification on the heat exchanger tube in a kind of boiler tube that is used for removing the tubular heater convection section and the air preheater specifically.
Background technology
At petroleum refining and petrochemical industry, along with increasing of the variation of oil property, sulfur content, the ash deposit and slag buildup problem in boiler tube in the tubular heater convection section and the air preheater on the heat exchanger tube is on the rise, and has influenced heat-transfer effect.Under the dust stratification serious situation, the heat-transfer capability of boiler tube and heat exchanger tube approximately reduces by 30%～50%; This will make the thermal efficiency of tubular heater reduce more than 5%, and the fuel consumption of tubular heater accounts for 30%～40% of petroleum refining and petrochemical enterprise total energy consumption.How reducing the dust stratification on boiler tube and the heat exchanger tube effectively, guarantee that the heat transfer efficiency of boiler tube and heat exchanger tube remains on the higher level, is vital for the on-stream time, the fuel savings consumption that prolong tubular heater.
The domestic soot blower that generally adopts is removed the dust stratification on boiler tube and the heat exchanger tube at present.The disclosed synchronous power save high-efficiency steam of Chinese patent CN201103913Y soot blower is secondary by motor-driven gear, and gear pair drives blowing pipe through tube connector, makes it rotation.Motor is driving cam simultaneously, and cam matches with the valve rod system of steam conducting valve, and the valve rod system is worked asynchronously with blowing pipe.Water vapour is removed the dust stratification on boiler tube and the heat exchanger tube by the ejection of the nozzle on the blowing pipe.The DG-III type steam sootblower that domestic use is more, the described soot blower of structure and working method and CN201103913Y is close, and the main distinction is to use worm and gear rather than uses gear pair.CN2639727Y discloses a kind of steam sootblower, is provided with two groups of blowing pipe roads, soot-blowing valve door and T-shaped shower nozzle.T-shaped shower nozzle first is used to remove the dust stratification in the superheater, and T-shaped shower nozzle second is used to remove the dust stratification in the economizer.When above-mentioned soot blower was used for removing in boiler tube and the air preheater of tubular heater convection section the dust stratification on the heat exchanger tube, the common problem of existence was the purging poor effect to the caking property dust stratification.The caking property dust stratification is that the laxity dust stratification that forms after the fuel combustion absorbs the SO in the flue gas
3With the compactness dust stratification that in the high-temperature flue gas environment, forms behind the steam, it produces when tubular heater fuel burning oil or sulfurous fuels gas usually.On the boiler tube and the heat exchanger tube in the air preheater in the tubular heater convection section, all exist the caking property dust stratification to some extent.The caking property dust stratification sticks on the tube wall of boiler tube and heat exchanger tube securely, and quite hard, is difficult for purging clean with water vapour.
For addressing the above problem, normally adopt a cover deashing agent sprinkling system to remove the caking property dust stratification.The deashing agent sprinkling system is utilized its jet-action through a duct injection water vapour, with deashing agent sucking-off in the bucket, and together sprays to boiler tube or heat exchanger tube through a pipeline that links to each other with the bucket that deashing agent is housed.(main component is Na to caking property dust stratification on boiler tube or the heat exchanger tube
2S
2O
7) (main component is NaBO with deashing agent
2, Na
2O, Na
2CO
3, NaCl) merge, chemical reaction takes place, (main component is Na to form the laxity dust stratification
2SO
4, B
2O
3); The typical reaction process is shown below:
2NaBO
2+Na
2S
2O
7→2Na
2SO
4+B
2O
3
Na
2O+Na
2S
2O
7→2Na
2SO
4
Na
2CO
3+Na
2S
2O
7→2Na
2SO
4+CO
2↑
Then, utilize the draft of flue gas in tubular heater convection section and the air preheater, the laxity dust stratification is taken away.The problem that this method exists is that flue gas can only be taken away a part of laxity dust stratification, still can retain some laxity dust stratification on boiler tube or the heat exchanger tube, makes dedusting effect not ideal enough.In addition, the deashing agent sprinkling system does not have fixture, and each parts all leans on a dead lift during use, and spraying deashing agent also all is to lean on manually-operated; Workload is big, operates loaded down with trivial detailsly, and automaticity is low.
Because prior art can not be removed boiler tube and the caking property dust stratification on the heat exchanger tube in the air preheater in the tubular heater convection section well; Thereby long period, the safe operation of tubular heater have seriously been influenced; Restricted carrying out of industry energy conservation reduction of discharging work, demanded improving solving urgently.
Summary of the invention
The purpose of this invention is to provide a kind of soot blower, can not remove boiler tube and the problem of the caking property dust stratification on the heat exchanger tube in the air preheater in the tubular heater convection section well to solve existing soot blower and deashing agent sprinkling system.
For addressing the above problem; The technical scheme that the present invention adopts is: a kind of soot blower, be provided with gas handling system, transmission system, blowing pipe and support, and transmission system comprises motor, decelerator; The blowing pipe upper edge is axially arranged with two rows and blows grey nozzle; The angle that two rows blow between the grey nozzle is 180 degree, it is characterized in that: be coaxially arranged with the deashing agent spray line with it in the described blowing pipe, deashing agent spray line upper edge is axially arranged with two row's deashing agent nozzles; The top of deashing agent nozzle is stretched out by the tube wall of blowing pipe; Every row's deashing agent nozzle correspondingly blows grey nozzle with every row respectively and is in same row, each row blow in grey nozzle and the deashing agent nozzle blow grey nozzle and the deashing agent nozzle is alternately arranged, the air inlet section of blowing pipe is provided with air admission hole; Be provided with preceding shrouding between the end of blowing pipe air inlet section and deashing agent spray line feed zone, the end of blowing pipe and deashing agent spray line is provided with the back shrouding.
The present invention is used for removing the dust stratification on the heat exchanger tube in boiler tube and the air preheater of tubular heater convection section; Has following beneficial effect: in (1) operating process; At first spray deashing agent, make the caking property dust stratification on boiler tube or the heat exchanger tube become the laxity dust stratification, then blow ash with blowing ash gas to boiler tube or heat exchanger tube; Just can at an easy rate the laxity dust stratification on boiler tube or the heat exchanger tube be removed totally, obtain good effect.Spray deashing agent to boiler tube or heat exchanger tube once more at last, chemical reaction can take place rapidly with the soot particle that arrives on boiler tube or the heat exchanger tube in deashing agent, impels soot particle to form the laxity dust stratification, alleviates the degree that soot particle forms the caking property dust stratification; And carry out circulation next time blow ash manipulation the time; Behind boiler tube or heat exchanger tube sprinkling deashing agent; Formed caking property dust stratification just will be among the two sides parcel of deashing agent on boiler tube or the heat exchanger tube, become the laxity dust stratification more easily, and purge clean with blowing ash gas.The ash-blowing method that the present invention is detailed is seen the explanation of this specification specific embodiment part.It is (2) of the present invention that what blow that ash gas purges is laxity dust stratification rather than caking property dust stratification; The black dirt of laxity dust stratification is easy to peel off, thereby makes the present invention can use more a spot of ash gas and lower ash gas pressure that blows of blowing, and just can boiler tube or heat exchanger tube be purged totally, blows the grey frequency and also can reduce in a large number.Like this, can practice thrift a large amount of ash gas and electric energy of blowing.(3) the present invention purges the laxity dust stratification on boiler tube or the heat exchanger tube with blowing ash gas; Rather than the draft that utilizes flue gas in tubular heater convection section and the air preheater takes away a part of laxity dust stratification, thereby the present invention can remove the laxity dust stratification on boiler tube or the heat exchanger tube clean.(4) soot blower of the present invention has the deashing agent of sprinkling and blows ash gas and blow two kinds of functions of ash, compact conformation.Be installed on during use on the sidewall of tubular heater convection section or air preheater, do not need the relevant parts of a dead lift.Can adopt its operation of electric control system controls, workload is little, and is easy and simple to handle, and automaticity is high.
The present invention is mainly used in the tubular heater of petroleum refining and petrochemical industry, efficiently removes the caking property dust stratification on the heat exchanger tube in boiler tube and the air preheater in the tubular heater convection section, make tubular heater can long period, safe operation; The heat transfer efficiency of boiler tube and heat exchanger tube can remain on the higher level, thereby can fuel savings consumption.The removing of the water cooling tube tube wall surface caking property dust stratification in thermal power plant also can be adopted the present invention.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.The accompanying drawing and the specific embodiment do not limit the present invention and require the scope protected.
Description of drawings
Fig. 1 is the structural representation of soot blower of the present invention; Shown in soot blower be installed on the sidewall of tubular heater convection section or air preheater.
Fig. 2 is the enlarged diagram that soot blower shown in Figure 1 blows grey nozzle and deashing agent nozzle.
Fig. 3 is the A-A profile among Fig. 2.
Among Fig. 1 to Fig. 3, same reference numerals is represented identical technical characterictic.
The specific embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, soot blower of the present invention is provided with gas handling system, transmission system, blowing pipe 93 and support 5.Transmission system comprises motor 1, decelerator 2, also is provided with chain and sprocket driving device.Chain and sprocket driving device is made up of drive sprocket 31, driven sprocket 32 and chain 33.Drive sprocket 31 links to each other with the output shaft of decelerator 2, and driven sprocket 32 links to each other with blowing pipe 93, all can adopt modes such as flat key connection to connect; Driven sprocket 32 can also be welded on the blowing pipe 93.The diameter of driven sprocket 32 is generally greater than the diameter of drive sprocket 31.The decelerator 2 of said soot blower is the cycloidal-pin wheel decelerator, and it can be that various types commonly used are gone up in industry.The present invention adopts the cycloidal-pin wheel decelerator, and reason is its speed reducing ratio big (can reach 700～1500).
Blowing pipe 93 upper edges are axially arranged with two rows, and to blow the angle that grey nozzle 94, two rows blow between the grey nozzle 94 be 180 degree.Be coaxially arranged with deashing agent spray line 91 with it in the blowing pipe 93, form annular space between the two.Deashing agent spray line 91 upper edges are axially arranged with two row's deashing agent nozzles 92, and the top of deashing agent nozzle 92 is stretched out by the tube wall of blowing pipe 93.Every row's deashing agent nozzle 92 correspondingly blows grey nozzle 94 with every row respectively and is in same row, and each row blows grey nozzle 94 and alternately arranges with deashing agent nozzle 92 with the grey nozzle 94 that blows in the deashing agent nozzle 92.Referring to Fig. 2, Fig. 3 and Fig. 1, blowing pipe 93 is provided with perforate, and the top of deashing agent nozzle 92 is stretched out by the perforate of correspondence, and sealing welding between the perforate.Also sealing welding between the corresponding perforate on the bottom of blowing grey nozzle 94 and the blowing pipe 93.Blowing grey nozzle 94 generally is on the diametric(al) of blowing pipe 93 and deashing agent spray line 91, relatively to be provided with in pairs with deashing agent nozzle 92.
The air inlet section of blowing pipe 93 is provided with air admission hole 95.Shrouding 96 before being provided with between the end of blowing pipe 93 air inlet sections and deashing agent spray line 91 feed zones, the end of blowing pipe 93 and deashing agent spray line 91 is provided with back shrouding 97.Preceding shrouding 96 is connected together with blowing pipe 93 and 91 seal welds of deashing agent spray line respectively in described position with back shrouding 97.Blowing pipe 93, blow grey nozzle 94, deashing agent spray line 91, deashing agent nozzle 92, preceding shrouding 96 and back shrouding 97, the parts of the structure that forms a whole.
The gas handling system of said soot blower is provided with air induction mast 81 around the air inlet section of blowing pipe 93.The middle part of air induction mast 81 is an inlet chamber 86, and air admission hole 95 set on inlet chamber 86 and the blowing pipe 93 air inlet sections communicates with air inlet pipe 7.Be respectively equipped with air induction mast airtight and watertight padding 82 and gland between the two ends of air induction mast 81 and the blowing pipe 93, leak to prevent the ash gas that blows in the inlet chamber 86.Air inlet pipe 7 is provided with air inlet pipe magnetic valve 71.Among Fig. 1, air induction mast airtight and watertight padding 82 is located in two stuffing boxes between air induction mast 81 two ends and the blowing pipe 93, uses respectively with the two ends of air induction mast 81 and compresses sealing through the preceding gland 831 that flange is connected with rear pressing cover 832.As shown in Figure 1, an end of air inlet pipe 7 is welded in the middle part of air induction mast 81, the other end (not shown in figure 1) that links to each other with the air supply manifold who blows ash gas.
End at deashing agent spray line 91 feed zones is provided with hybrid chamber 85.Hybrid chamber 85 communicates with the end of deashing agent spray line 91 feed zones and an end of deashing agent suction line 6.Among Fig. 1, hybrid chamber 85 is made up of the inner chamber of one section tube connector 84 that is welded to connect with preceding gland 831; In the other end of tube connector 84 and the deashing agent suction line 6 with and a end that hybrid chamber 85 communicates link to each other through flange.The other end of deashing agent suction line 6 (not shown in figure 1) that links to each other with the deashing agent storage tank is connected in dress in the deashing agent storage tank and receives the part of deashing agent; The top of deashing agent material level is a normal pressure in the deashing agent storage tank.
Be connected with induction tunnel 61 on the deashing agent suction line 6, induction tunnel 61 is provided with induction tunnel magnetic valve 62.Referring to Fig. 1, induction tunnel 61 is made up of one section inclined tube and one section horizontal tube.One end of inclined tube (port of export of induction tunnel 61) is welded to connect on deashing agent suction line 6, and the other end links to each other with an end of horizontal tube; The other end of the horizontal tube (not shown in figure 1) that links to each other with the air supply manifold of injection gas.Induction tunnel magnetic valve 62 is located on the horizontal tube.Angle between inclined tube and the deashing agent suction line 6 is generally 30～40 degree.
When blowing ash gas and injection gas and be steam (the described steam of specification of the present invention all refers to water vapour) or air, on the air inlet pipe 7 on set air inlet pipe magnetic valve 71, the induction tunnel 61 set induction tunnel magnetic valve 62 can correspondingly adopt steam electromagnetic valve or air magnetic valve.Steam electromagnetic valve and air magnetic valve can adopt in the industry to be used always.
Fig. 1, Fig. 2 and shown in Figure 3 blows the various nozzles that grey nozzle 94 can adopt existing soot blower to use always, and the axial line of its axial line and blowing pipe 93 is perpendicular.Blow grey nozzle 94 and preferably adopt Laval nozzle structure (being collapsible tube-convergent divergent channel structure), its throat diameter is generally 4～7 millimeters.The purpose that adopts the Laval nozzle structure is to blow ash gas and can dispose the dust stratification on boiler tube or the heat exchanger tube fast with great kinetic energy by blowing (1～2 overtone speed) ejection at a high speed of grey nozzle 94 in order to make.Deashing agent nozzle 92 is a circular tube structure, and the axial line of its axial line and deashing agent spray line 91 is perpendicular, and interior diameter is generally 5～8 millimeters.The bottom of deashing agent nozzle 92 is the section of being threaded, and links to each other through screw thread between the deashing agent spray line 91.Preferably link to each other through taper pipe thread; Because the good airproof performance of taper pipe thread, deashing agent and injection gas when soot blower is worked in the deashing agent spray line 91 can not leak through the threaded connection place.
Soot blower of the present invention, blowing pipe 93, deashing agent spray line 91, air induction mast 81, tube connector 4 and deashing agent suction line 6 generally are round tube, coaxial setting; Air inlet pipe 7 generally also is round tube with induction tunnel 61.Wherein, the overall diameter of blowing pipe 93 is generally 50～60 millimeters, and wall thickness is generally 4～5.5 millimeters.Set air admission hole 95 is generally circular port on the blowing pipe 93 air inlet sections, and diameter is generally 15～20 millimeters, and quantity is generally 4～6.The overall diameter of deashing agent spray line 91 is generally 32～40 millimeters, and wall thickness is generally 3.5～4.5 millimeters.In grey nozzle 94 of blowing of same row and deashing agent nozzle 92, the adjacent spacing t that blows between grey nozzle 94 and the deashing agent nozzle 92 is generally 70～160 millimeters.Spacing t confirms (horizontally-arranged boiler tube or heat exchanger tube are meant boiler tube or heat exchanger tube pipe row in the horizontal direction) according to the tube pitch of horizontally-arranged boiler tube in the tubular heater convection section or according to the tube pitch of horizontally-arranged heat exchanger tube in the air preheater.
Referring to Fig. 1, soot blower of the present invention is installed on the sidewall of tubular heater convection section or air preheater, and blowing pipe 93 is horizontally disposed with deashing agent spray line 91, is passed by the supported hole on the front side wall 11.Be provided with between front side wall 11 outsides and the blowing pipe 93 front side wall sealing 4 (by the stuffing box that is welded in front side wall 11 outsides with in the airtight and watertight padding of establishing forms), with prevent air get in the tubular heater convection section or the entering air preheater in.In the supported hole of the end support of blowing pipe 93 on rear wall 12; The supported hole outside on the rear wall 12 is provided with rear wall shrouding 14.All be preset with sleeve pipe in the supported hole on front side wall 11 and the rear wall 12.Motor 1 is supported on the support 5 with decelerator 2, and air induction mast 81 is connected on the support 5 through connector 10.Support 5 is a steel construction piece, is welded on the outside of front side wall 11.
The length of blowing pipe 93 and deashing agent spray line 91 is mainly confirmed according to the spacing of front side wall 11 and rear wall 12.Soot blower is installed many at the sidewall of tubular heater convection section or air preheater along short transverse, generally is whenever at a distance from 5～7 horizontal row grate furnace pipes or heat exchanger tube 13 soot blower to be installed.
The transmission system of the present invention's soot blower shown in Figure 1 is made up of motor 1, decelerator 2, chain and sprocket driving device (comprising drive sprocket 31, driven sprocket 32 and chain 33).Gas handling system mainly is made up of air induction mast 81, seal (comprising air induction mast airtight and watertight padding 82, preceding gland 831 and rear pressing cover 832), inlet chamber 86, air inlet pipe 7, air inlet pipe magnetic valve 71.Deashing agent suction line 6, induction tunnel 61 and induction tunnel magnetic valve 62, the deashing agent ejection system of formation soot blower of the present invention.When blowing pipe 93 rotated with deashing agent spray line 91, it is motionless that gas handling system and deashing agent ejection system keep.
Soot blower of the present invention, blowing pipe 93, the material that blows grey nozzle 94, deashing agent spray line 91, deashing agent nozzle 92, preceding shrouding 96 and back shrouding 97 are generally heat-resistance stainless steel (like 1Cr18Ni9Ti); The material of parts such as air induction mast 81, air inlet pipe 7, deashing agent suction line 6, induction tunnel 61 is generally carbon steel.
Explain that below in conjunction with Fig. 1 to Fig. 3 the soot blower that adopts the invention described above blows the method for ash, said ash-blowing method is made up of following steps:
A. motor 1 starts; The rotating speed of motor 1 output shaft is generally about 1500 rev/mins, through decelerator 2 decelerations, chain and sprocket driving device transmission, is driven blowing pipes 93 and is driven the 91 whole rotations of deashing agent spray line thus by driven sprocket 32.
Induction tunnel magnetic valve 62 is opened, and air inlet pipe magnetic valve 71 cuts out.Injection gas among the injection gas air supply manifold sprays into deashing agent suction line 6 through induction tunnel 61, and the jet-action (injection gas forms negative pressure in the exit of induction tunnel 61) through injection gas is drawn into deashing agent suction line 6 with deashing agent from the deashing agent storage tank.Deashing agent and injection gas get into hybrid chamber 85 by deashing agent suction line 6 afterwards, mix the back and get into deashing agent spray line 91, are sprayed onto on boiler tube or the heat exchanger tube 13 by deashing agent nozzle 92 at last.Caking property dust stratification and deashing agent on boiler tube or the heat exchanger tube 13 merge, and chemical reaction takes place, and form the laxity dust stratification; Reaction equation is referring to the background technology part of this specification.
B. induction tunnel magnetic valve 62 cuts out, and air inlet pipe magnetic valve 71 is opened.The ash gas that blows that blows among the ash gas air supply manifold gets into inlet chamber 86 through air inlet pipe 7, the annular space that is got between blowing pipe 93 and the deashing agent spray line 91 by air admission hole 95 again.At last, be sprayed onto on boiler tube or the heat exchanger tube 13, boiler tube or heat exchanger tube 13 are blown ash, dispose the laxity dust stratification on boiler tube or the heat exchanger tube 13 by blowing grey nozzle 94.
C. induction tunnel magnetic valve 62 is opened, and air inlet pipe magnetic valve 71 cuts out.Injection gas among the injection gas air supply manifold sprays into deashing agent suction line 6 through induction tunnel 61, through the jet-action of injection gas, deashing agent is drawn into deashing agent suction line 6 from the deashing agent storage tank.Deashing agent and injection gas get into hybrid chamber 85 by deashing agent suction line 6 afterwards, mix the back and get into deashing agent spray line 91, are sprayed onto on boiler tube or the heat exchanger tube 13 by deashing agent nozzle 92 at last.
After step C operation was accomplished, induction tunnel magnetic valve 62 cut out, and motor 1 shuts down simultaneously, accomplished the grey process of once blowing.
In step C, (main component is NaBO to be sprayed onto deashing agent on boiler tube or the heat exchanger tube 13
2, Na
2O, Na
2CO
3, NaCl) can [main component be Fe with arriving soot particle on boiler tube or the heat exchanger tube 13
2(SO
4)
3, Al
2(SO
4)
3] chemical reaction takes place rapidly, impel soot particle to form the laxity dust stratification, alleviate the degree that soot particle forms the caking property dust stratification; The typical reaction process is shown below:
6NaCl+Fe
2(SO
4)
3→3Na
2SO
4+2FeCl
3
6NaCl+Al
2(SO
4)
3→3Na
2SO
4+2AlCl
3
React formed FeCl
3, AlCl
3Distillation rapidly, the main component of laxity dust stratification is Na
2SO
4And carry out circulation next time blow ash manipulation the time; Behind boiler tube or heat exchanger tube sprinkling deashing agent; Formed caking property dust stratification just will be among the two sides parcel of deashing agent on boiler tube or the heat exchanger tube, become the laxity dust stratification more easily, and purge clean with blowing ash gas.So step C can think in order to carry out the preparation process that ash manipulation is taked that blows of circulation next time.When the dust stratification on boiler tube or heat exchanger tube 13 reaches the degree that needs removing, promptly carry out the operation of above-mentioned steps A, step B, step C once more.
Above-mentioned by steps A, whole blowing in the ash manipulation process that step B, step C formed, injection gas with blow ash gas and all can adopt overheated medium pressure steam; The bleed pressure of injection gas is generally 0.4～0.7MPa, and the bleed pressure that blows ash gas is generally 0.7～1.2MPa.Injection gas with blow ash gas and also all can adopt normal temperature compressed air; The bleed pressure of injection gas is 0.4～0.7MPa also generally, and the bleed pressure that blows ash gas generally also is 0.7～1.2MPa.All pressure are gauge pressure.
By steps A, whole blowing in the ash manipulation process that step B, step C formed, blowing pipe 93 is generally 1～2 rev/min with deashing agent spray line 91 integrally rotated rotating speeds above-mentioned.The present invention relies on decelerator 2 to slow down; Chain and sprocket driving device (drive sprocket 31, driven sprocket 32 and chain 33) mainly only plays gearing, can further slow down on a small quantity simultaneously.In steps A, step B and step C, blowing pipe 93 and 91 general equal whole 1～2 weeks of rotation of deashing agent spray line.Test shows that under above-mentioned rotating speed and rotating cycle, the deashing agent of deashing agent nozzle 92 ejections can be distributed to the surface of boiler tube or heat exchanger tube 13 fully, blows the surface that ash gas can purge boiler tube or heat exchanger tube 13 fully of grey nozzle 94 ejections.
The mixture of deashing agent and injection gas is not high by the rate request of deashing agent nozzle 92 ejections, as long as can make deashing agent be sprayed onto the surface of boiler tube or heat exchanger tube 13 equably.Deashing agent nozzle 92 can adopt circular tube structure for this reason, and the bleed pressure of injection gas is also lower.The mixture of deashing agent and injection gas is generally 150～200 meter per seconds by the speed of deashing agent nozzle 92 ejections.It is higher by the rate request that blows 94 ejections of grey nozzle to blow ash gas, and purpose is to make to blow ash gas and can dispose the dust stratification (comprising laxity dust stratification and residual caking property dust stratification) on boiler tube or the heat exchanger tube 13 fast with great kinetic energy.Blow grey nozzle 94 for this reason and preferably adopt the Laval nozzle structure, the bleed pressure that blows ash gas is also higher.Blow ash gas and be generally 1～2 overtone speed (340～680 meter per second) by the speed of blowing grey nozzle 94 ejections.
Soot blower of the present invention is in operating process, and the keying of the startup of motor 1 and stall, induction tunnel magnetic valve 62 and air inlet pipe magnetic valve 71 all can be adopted conventional electric-control system (for example programmable logic controller (PLC) PLC) control, and accompanying drawing and detailed description are omitted.Blow the needs of grey occasion according to difference; Electric-control system can also control motor 1 just changeing, reversing, at 180 degree or in 360 degree scopes, rotate; Make the unitary rotation of blowing pipe 93 and deashing agent spray line 91 generation corresponding manners, to reach best deashing agent spray effect and to blow ash gas and blow grey effect.
Claims (4)
1. soot blower; Be provided with gas handling system, transmission system, blowing pipe (93) and support (5); Transmission system comprises motor (1), decelerator (2), and blowing pipe (93) upper edge is axially arranged with two rows and blows grey nozzle (94), and the angle that two rows blow between the grey nozzle (94) is 180 degree; It is characterized in that: the interior deashing agent spray line (91) that is coaxially arranged with it of described blowing pipe (93); Deashing agent spray line (91) upper edge is axially arranged with two row's deashing agent nozzles (92), and the top of deashing agent nozzle (92) is stretched out by the tube wall of blowing pipe (93), and every row's deashing agent nozzle (92) correspondingly blows grey nozzle (94) with every row respectively and is in same row; Each row blow in grey nozzle (94) and the deashing agent nozzle (92) blow grey nozzle (94) and deashing agent nozzle (92) is alternately arranged; The air inlet section of blowing pipe (93) is provided with air admission hole (95), is provided with preceding shrouding (96) between the end of blowing pipe (93) air inlet section and deashing agent spray line (91) feed zone, and the end of blowing pipe (93) and deashing agent spray line (91) is provided with back shrouding (97).
2. soot blower according to claim 1; It is characterized in that: described decelerator (2) is the cycloidal-pin wheel decelerator; The transmission system of soot blower is provided with chain and sprocket driving device, and chain and sprocket driving device is made up of drive sprocket (31), driven sprocket (32) and chain (33), and drive sprocket (31) links to each other with the output shaft of decelerator (2); Driven sprocket (32) links to each other with blowing pipe (93); The gas handling system of said soot blower is provided with air induction mast (81) around the air inlet section of blowing pipe (93), and the middle part of air induction mast (81) is inlet chamber (86), and set air admission hole (95) and air inlet pipe (7) communicates on inlet chamber (86) and blowing pipe (93) the air inlet section; Be respectively equipped with air induction mast airtight and watertight padding (82) and gland between the two ends of air induction mast (81) and the blowing pipe (93); Air inlet pipe (7) is provided with air inlet pipe magnetic valve (71), is provided with hybrid chamber (85) in the end of deashing agent spray line (91) feed zone, and hybrid chamber (85) communicates with the end of deashing agent spray line (91) feed zone and an end of deashing agent suction line (6); Be connected with induction tunnel (61) on the deashing agent suction line (6), induction tunnel (61) is provided with induction tunnel magnetic valve (62).
3. soot blower according to claim 1 and 2; It is characterized in that: blow grey nozzle (94) and be the Laval nozzle structure; Its throat diameter is 4～7 millimeters, and deashing agent nozzle (92) is a circular tube structure, and its interior diameter is 5～8 millimeters; The bottom of deashing agent nozzle (92) is the section of being threaded, and links to each other through taper pipe thread between the deashing agent spray line (91).
4. soot blower according to claim 1 and 2; It is characterized in that: the overall diameter of blowing pipe (93) is 50～60 millimeters, and wall thickness is 4～5.5 millimeters, and air admission hole (95) set on blowing pipe (93) the air inlet section is a circular port; Diameter is 15～20 millimeters; Quantity is 4～6, and the overall diameter of deashing agent spray line (91) is 32～40 millimeters, and wall thickness is 3.5～4.5 millimeters; In grey nozzle of blowing of same row (94) and deashing agent nozzle (92), the adjacent spacing (t) of blowing between grey nozzle (94) and the deashing agent nozzle (92) is 70～160 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010219844A CN101876447B (en) | 2010-07-01 | 2010-07-01 | Soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010219844A CN101876447B (en) | 2010-07-01 | 2010-07-01 | Soot blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101876447A CN101876447A (en) | 2010-11-03 |
| CN101876447B true CN101876447B (en) | 2012-10-10 |
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| CN201010219844A Active CN101876447B (en) | 2010-07-01 | 2010-07-01 | Soot blower |
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Families Citing this family (15)
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| CN102748766A (en) * | 2011-04-22 | 2012-10-24 | 中国石油化工股份有限公司 | Air soot blower |
| CN102221214A (en) * | 2011-07-20 | 2011-10-19 | 北京市旭广厦暖通节能设备有限责任公司 | Boiler ash cleaning system with high efficiency and energy saving |
| CN102853439A (en) * | 2012-09-20 | 2013-01-02 | 扬州埃克森能源发展有限公司 | Intelligent-control non-retractable synchronous soot blower system |
| CN103642531B (en) * | 2013-11-29 | 2015-03-25 | 柳州化工股份有限公司 | Cross blowback device of shell coal gasifier and fabrication method thereof |
| CN105241298B (en) * | 2014-07-11 | 2019-03-19 | 优力沃思（北京）科技股份有限公司 | Air preheater rinse-system |
| CN104235863B (en) * | 2014-09-29 | 2016-08-17 | 天津春辉兴科技有限责任公司 | A kind of ash-blowing method |
| CN105485653B (en) * | 2014-10-07 | 2018-02-02 | 宁夏天纵泓光余热发电技术有限公司 | Membrane wall heat-exchanging component with mechanical airflow formula deashing function |
| CN104406177B (en) * | 2014-11-28 | 2016-08-24 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Tubular air preheater impulse dust remover |
| KR102376670B1 (en) * | 2015-09-22 | 2022-03-22 | 한국전력공사 | Soot blower apparatus |
| CN107300185B (en) * | 2017-05-27 | 2019-04-02 | 中国神华能源股份有限公司 | Spray head and soot blower |
| CN107289456B (en) * | 2017-08-17 | 2023-06-02 | 富技腾流体科技（天津)有限公司 | Soot blower for rotary air preheater |
| JP6869162B2 (en) * | 2017-10-12 | 2021-05-12 | 日立造船株式会社 | Cleaning mechanism |
| CN108435717A (en) * | 2018-05-14 | 2018-08-24 | 江苏康大联合节能科技有限公司 | A kind of vapour gas combined highly effective cleaning system being exclusively used in nonmetallic heat exchanger |
| CN110595260B (en) * | 2019-10-08 | 2021-03-23 | 广东石油化工学院 | On-line cleaning method for dirt of shell-and-tube heat exchanger |
| CN113551247B (en) * | 2021-07-27 | 2023-07-21 | 浙江莱梦德电力设备有限公司 | Soot blower based on sound wave and chemical soot removal and soot removal method thereof |
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| CN101876447A (en) | 2010-11-03 |
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Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: Sinopec Corp. Co-applicant after: Luoyang Petrochemical Engineering Corporation /SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant before: Sinopec Corp. Co-applicant before: Luoyang Petrochemical Engineering Co., China Petrochemical Group |
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