CN203099786U - Horizontal single-furnace pulverized coal boiler - Google Patents
Horizontal single-furnace pulverized coal boiler Download PDFInfo
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- CN203099786U CN203099786U CN 201220685034 CN201220685034U CN203099786U CN 203099786 U CN203099786 U CN 203099786U CN 201220685034 CN201220685034 CN 201220685034 CN 201220685034 U CN201220685034 U CN 201220685034U CN 203099786 U CN203099786 U CN 203099786U
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- collection case
- cylindrical shell
- horizontal
- flue
- membrane wall
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Abstract
The utility model discloses a horizontal single-furnace pulverized coal boiler which comprises a shell barrel and an outer hang barrel. A single furnace, a front tube plate, a rear tube plate, a front smoke box, a rotary combustor with a membrane wall, an outer wrapping plate and a second return smoke tube are arranged in the shell barrel, and the second return smoke tube is arranged below the single furnace; a third return smoke tube is arranged in the outer hang barrel and is communicated with the front smoke box via a flue; a smoke outlet is further arranged on the outer hang barrel; and the outer hang barrel is communicated with a water channel in the shell barrel via an extraction tube. The horizontal single-furnace pulverized coal boiler has the advantages that a horizontal single-furnace structural arrangement mode is adopted, and the single furnace is arranged on the upper side of the horizontal single-furnace pulverized coal boiler while the smoke tubes are arranged on the lower side of the horizontal single-furnace pulverized coal boiler, so that smoke can be circulated smoothly, and the horizontal single-furnace pulverized coal boiler is compact in integral structure, simple in appearance and arrangement, small in occupied area and low in steel consumption, and can be integrally transported.
Description
Technical field
The utility model belongs to the coal-burned industrial boiler field, and being specifically related to a kind of is fuel with the coal dust, is used to produce the horizontal internal combustion pulverized-coal fired boiler of steam.
Background technology
The energy resource structure of China is based on coal, and in the following long duration, coal-burned industrial boiler will be the leading products of Industrial Boiler.
Traditional industry coal-boiler is based on grate firing boiler, and shortcoming is that efficiency of combustion is low, and is seriously polluted, is difficult to satisfy energy-saving and emission-reduction and pollutant emission requirement.
Coal dust firing is one of high performance clean burning mode of coal, and its efficiency of combustion can reach more than 96%, is the combustion technology of a maturation.Yet, the boiler that is exclusively used in coal dust firing is not arranged at present as yet.
Existing burning is oil-burning gas-fired boiler normally, is example with the WNS type, is horizontal fast-assembling internal combustion three backhaul multitubular boilers, adopts biasing flue wetting back-type structure, and high-temperature flue gas washes away second and third backhaul smoke pipe successively, enters atmosphere by rear smoke chamber through chimney then.
See figures.1.and.2, its structure comprises shell cylindrical shell 1 ' and boiler foundation 11 ', be provided with corrugated internal furnace 2 ' in the described shell cylindrical shell 1 ', the chamber 3 ' of strile-bacing, front tube sheet 4 ', back tube sheet 5 ', the second backhaul smoke pipe 6 ', the 3rd backhaul smoke pipe 7 ', front smoke box 8 ' and back smoke box 9 ', the two ends of described corrugated internal furnace 2 ', the second backhaul smoke pipe 6 ' and the 3rd backhaul smoke pipe 7 ' are fixed in the described boiler barrel 1 ' with back tube sheet 5 ' by described front tube sheet 4 '; The rear end of described corrugated internal furnace 2 ' is by described chamber 3 ' and the described second backhaul smoke pipe 6 ' UNICOM of strile-bacing; Described second backhaul smoke pipe 6 ' and the 3rd backhaul smoke pipe 7 ' are arranged on the upside of described corrugated internal furnace 2 ', and by described front smoke box 8 ' UNICOM; Described front smoke box 8 ' and back smoke box 9 ' are separately positioned on 1 ' front and back end of described boiler barrel, and described back smoke box 9 ' is provided with outlet flue 10 '; Described boiler foundation 11 ' is arranged on the bottom of shell cylindrical shell 1 '.
Can there be following problem in the oil-burning gas-fired boiler of said structure when carrying out coal dust firing:
1, rated power undercapacity: because the furnace cavity deficiency, the heat exchange effect is bad, and actual power can only reach half of rated power usually.
2, easily coking: when coal dust firing, in carbonisation, can be converted into tar.A large amount of tar is bonded on the furnace wall, can reduce the capacity of flue, thereby reduces the generating capacity of steam, and then reduces heat exchange efficiency.
3 if increase steam production, then must increase the capacity of flue, can increase the volume of boiler thus.Yet when the volume of boiler was increased to a certain degree, difficulty of processing can significantly increase, and can cause and can't transport.
4, collection ash: no soot blower in the drum, produced behind the coal dust firing that a large amount of flying dusts is deposited in flue, strile-back chamber and smoke pipe inside, can cause the flue gas short circuit.
5, wearing and tearing: because of there not being flying dust in the flue gas substantially, velocity of flue gas is very fast, and smoke pipe is not had wearing and tearing during the oil gas boiler design, but produce a large amount of flue gases behind the coal-fired powder, contain flying dust in the flue gas, too soon to the tube interior serious wear, the smoke pipe import will add Antiwear casing as velocity of flue gas.
Summary of the invention
The problems referred to above that prior art to be solved in the utility model exists aim to provide a kind of novel horizontal single flue pulverized-coal fired boiler.
For solving the problems of the technologies described above, the utility model is by the following technical solutions: a kind of horizontal single flue pulverized-coal fired boiler, comprise shell cylindrical shell and plug-in cylindrical shell, be provided with single flue, front tube sheet, back tube sheet, front smoke box, membrane wall strile-back chamber, skin plating and the second backhaul smoke pipe in the described shell cylindrical shell, the described single flue and the second backhaul smoke pipe are fixed in the described shell cylindrical shell by described front tube sheet and back tube sheet; Described front smoke box is arranged on described boiler barrel front end; The front end of the described second backhaul smoke pipe and described front smoke box UNICOM, the rear end is by described membrane wall strile-back chamber and described single flue UNICOM; It is characterized in that:
The described chamber of strile-bacing is the membrane wall chamber of strile-bacing, comprise vertical collection case, go up horizontal collection case, left and right sides membrane wall, back membrane wall, horizontal collection case and vertical down collection case down, described vertical collection case is connected with the boiler back tube sheet respectively with the following vertical case that collects, described horizontal collection case is connected with last vertical collection case and conducting, described horizontal collection case down is connected and conducting with down vertical collection case, vertical collection case and vertical down collection case in the membrane wall UNICOM of the described left and right sides, horizontal collection case and horizontal collection case down in the membrane wall UNICOM of described back, described water route UNICOM of vertical collection case and shell cylindrical shell;
Described two return smoke pipe is arranged on the downside of described single flue; Be provided with the 3rd backhaul smoke pipe in the described plug-in cylindrical shell, described the 3rd backhaul smoke pipe is by flue and described front smoke box UNICOM; Also be provided with outlet flue on the plug-in cylindrical shell; Described plug-in cylindrical shell is by the water route UNICOM of fairlead and shell cylindrical shell.
Horizontal single flue pulverized-coal fired boiler of the present utility model, coal dust borrow a wind to spray in single flue by burner, and simultaneously, tertiary air is spirt list flue in proportion, have guaranteed that single flue has sufficient oxygen and fuel reaction burning.High-temperature flue gas after the heat exchange of single flue internal combustion enters the membrane wall chamber of strile-bacing and transfers 180 ° again and enter the second backhaul smoke pipe downwards and carry out heat convection, and flue gas is undertaken entering flue gas purification system from outlet flue behind the heat convection by the 3rd backhaul smoke pipe that flue enters the outside again.Solid particle in the flue gas is eliminated, and discharge index meets national standard.
Water route of the present utility model operation principle is as follows: the water in the shell cylindrical shell at first enters down vertical collection case, the water of vertical down collection case enters left and right sides membrane wall and following horizontal collection case respectively, horizontal Ji Xiangshui enters horizontal collection case by the back membrane wall down, the water of going up horizontal collection case flows into goes up vertical collection case, simultaneously left and right sides membrane wall waterborne is raised to the vertical case that collects and converges, the water of going up vertical collection case at last flows in the drum, has finished whole water circulation.
The utlity model has following advantage:
1) the horizontal single flue tube structure layout of employing in the boiler barrel, and single flue is last, and smoke pipe makes the flue gas circulation smooth and easy down, and compact overall structure, profile are arranged simply, floor space is little, and steel consumes low, can realize whole Transporting.
2) membrane wall structure is adopted in the chamber of strile-bacing, and so-called membrane wall is the water-cooling wall that connects into a sealing with pipe and band steel, so furnace wall only needs insulation material, and integral sealing, good heat insulating are leaked out less.
3) volume of boiler barrel part is less, and the production cycle is short, and is easy for installation, easy to operate and accumulating.
As further improvement of the utility model, described second backhaul smoke pipe and the 3rd backhaul smoke pipe adopt the threaded flue structure.Convection heating surface adopts threaded flue, the heating surface abundance, and sweep of gases is smooth and easy, is difficult for dust stratification, prolonged boiler service life.
Further improve as of the present utility model, the described membrane wall bottom, chamber of strile-bacing also is provided with ash port, easy cleaning dust stratification again.
Further improve as of the present utility model, the strile-back rear end of chamber of described membrane wall also is provided with explosion proof door, makes the utility model safer again.
Further improve as of the present utility model, the strile-back rear end of chamber of described membrane wall also is provided with and blows ash mouthful again.
Further improve as of the present utility model, described plug-in cylindrical shell is set in parallel in the outside of described shell cylindrical shell again.
Further improve as of the present utility model, adopt grading combustion technology, send into tertiary air in the burner hearth successively, whole temperature field is even, can effectively stop the generation of burner hearth coking and reduction nitrogen oxide.
Description of drawings
Fig. 1 is the structural representation of existing WNS type oil-burning gas-fired boiler.
Fig. 2 be Fig. 1 A to B-B to view, wherein a left side half view of Fig. 2 be the A of Fig. 1 to view, the right side half view of Fig. 2 is that the B-B of Fig. 1 is to cutaway view.
Fig. 3 is horizontal single flue pulverized-coal fired boiler structure chart of the present utility model.
Fig. 4 is that the C of Fig. 3 is to view.
Fig. 5 is that the D of Fig. 3 is to view.
Fig. 6 is the vertical view of Fig. 3.
Fig. 7 is the strile-back structural representation of chamber of the utility model membrane wall.
Fig. 8 is the right view of Fig. 7.
Among the figure, the single flue of 1-shell cylindrical shell, 2-, 3-front tube sheet, 4-back tube sheet, 5-front smoke box, 6-membrane wall strile-back chamber, 7-skin plating, 8-ash port, the 9-second backhaul smoke pipe, 10-flue, the plug-in cylindrical shell of 11-, 12-the 3rd backhaul smoke pipe, 13-outlet flue, 14-front tube sheet, 15-back tube sheet, 16-fairlead, behind the last vertical collection case of 61-, the last horizontal collection case of 62-, 63-left and right sides membrane wall, the 64-under membrane wall, the 65-horizontal collection case, the vertical down collection case of 66-, the explosion-proof doorway of 67-, 68-blow grey mouth.
The specific embodiment
Referring to figs. 1 through Fig. 6, a kind of horizontal single flue pulverized-coal fired boiler of the present utility model, comprise shell cylindrical shell 1 and plug-in cylindrical shell 11, be provided with single flue 2, front tube sheet 3, back tube sheet 4, front smoke box 5, membrane wall strile-back chamber 6, skin plating and the second backhaul smoke pipe 9 in the described shell cylindrical shell 1, the described single flue 2 and the second backhaul smoke pipe 9 are fixed in the described shell cylindrical shell 1 by described front tube sheet 3 and back tube sheet 4; Described front smoke box 5 and skin plating 7 are separately positioned on described boiler barrel 1 front and back end; The front end of the described second backhaul smoke pipe 9 and described front smoke box 5 UNICOMs, the rear end is by described membrane wall strile-back chamber 6 and described single flue 2 UNICOMs; Described two return smoke pipe 9 is arranged on the downside of described single flue 2; Described membrane wall 6 bottoms, chamber of strile-bacing also are provided with ash port 8.
With reference to Fig. 7 and Fig. 8, the described membrane wall chamber 6 of strile-bacing comprises vertical collection case 61, go up horizontal collection case 62, left and right sides membrane wall 63, back membrane wall 64, down horizontal collection case 65 and down vertical collection case 66, described vertical collection case 61 is connected with boiler back tube sheet 4 respectively with the following vertical case 66 that collects, described horizontal collection case 62 is connected with last vertical collection case 61 and conducting, described horizontal collection case 65 down is connected and conducting with down vertical collection case 66, vertical collection case 61 and down vertical collection case 66 in membrane wall 63 UNICOMs of the described left and right sides, horizontal collection case 62 and horizontal collection case 65 down in the membrane wall UNICOM of described back, described water route UNICOM of vertical collection case 61 and shell cylindrical shell 1.The strile-back rear end of chamber 6 of described membrane wall also is provided with explosion proof door 7 and blows ash mouthfuls 8.
Be provided with the 3rd backhaul smoke pipe 12 in the described plug-in cylindrical shell 11, described the 3rd backhaul smoke pipe 12 is by flue 10 and described front smoke box 5 UNICOMs.Described the 3rd backhaul smoke pipe 12 can be fixed in the plug-in cylindrical shell 11 by front tube sheet 14 and back tube sheet 15.Water-injecting cavity between the tube bank of the barrel of plug-in cylindrical shell 11 and the 3rd backhaul smoke pipe 12 is by the water route UNICOM of fairlead 16 with shell cylindrical shell 1.Also be provided with outlet flue 13 on the plug-in cylindrical shell 11.Described plug-in cylindrical shell 11 is set in parallel in the outside of described shell cylindrical shell 1.
Described second backhaul smoke pipe 9 and the 3rd backhaul smoke pipe 12 are made of a plurality of convection banks, and the threaded flue structure is adopted in described convection bank.
Operation principle of the present utility model is as follows:
Horizontal single flue pulverized-coal fired boiler of the present utility model, coal dust borrow a wind to spray in single flue 2 by burner, and simultaneously, tertiary air is spirt list flue 2 in proportion, have guaranteed that single flue 2 has sufficient oxygen and fuel reaction burning.High-temperature flue gas after single flue 2 internal combustion heat exchange enters membrane wall chamber 6 convection bank that enters the second backhaul smoke pipe 9 downwards of transferring again 180 ° of strile-bacing and carries out heat convection, heat convection is carried out in the convection bank that enters the 3rd backhaul smoke pipe 12 in the plug-in cylindrical shell 11 by flue 10 flue gases again, enters flue gas purification system from outlet flue 13 at last.
Shell cylindrical shell 1, membrane wall chamber 6 and the plug-in cylindrical shell 11 that strile-back constitutes the water system of sealing.Water injects earlier in the plug-in cylindrical shell 11, is connected to shell cylindrical shell 1 through heat convection through fairlead 16, and the part steam water interface enters from the membrane wall chamber 6 next part casees that strile-back, and is pooled to upper collecting chamber along membrane wall, enters shell cylindrical shell 1 again.Steam is drawn boiler and was advanced carbonated drink separation, has improved the quality of steam greatly.
Membrane wall strile-backs, and to follow process as follows for water routes in the chamber 6: the water in the shell cylindrical shell 1 at first enters down the vertical case 66 that collects, the water of vertical down collection case 66 enters left and right sides membrane wall 33 and following horizontal collection case 65 respectively, horizontal collection case 65 water enter horizontal collection case 62 by back membrane wall 64 down, the water of going up horizontal collection case 62 flows into goes up vertical collection case 61, simultaneously left and right sides membrane wall 63 waterborne is raised to the vertical case 61 that collects and converges, the water of going up vertical collection case 61 at last flows in the drum, has finished whole water circulation.
What should be understood that is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection domain of the present utility model.
Claims (6)
1. horizontal single flue pulverized-coal fired boiler, comprise shell cylindrical shell (1) and plug-in cylindrical shell (11), be provided with single flue (2), front tube sheet (3), back tube sheet (4), front smoke box (5), the chamber of strile-bacing (6), skin plating (7) and the second backhaul smoke pipe (9) in the described shell cylindrical shell (1), the described single flue (2) and the second backhaul smoke pipe (9) are fixed in the described shell cylindrical shell (1) by described front tube sheet (3) and back tube sheet (4); Described front smoke box (5) and skin plating (7) are separately positioned on described boiler barrel (1) front and back end; The front end of the described second backhaul smoke pipe (9) and described front smoke box (5) UNICOM, the rear end is by the described chamber of strile-bacing (6) and described single flue (2) UNICOM; It is characterized in that:
The described chamber of strile-bacing (6) is the membrane wall chamber of strile-bacing, comprise vertical collection case (61), go up horizontal collection case (62), left and right sides membrane wall (63), back membrane wall (64), horizontal collection case (65) and following indulging collect case (66) down, the described vertical collection case (61) of is connected with boiler back tube sheet (4) respectively with following vertical collection case (66), the described horizontal collection case (62) of is connected also conducting with last vertical collection case (61), described horizontal collection case (65) down is connected and conducting with following vertical collection case (66), vertical collection case (61) and down vertical collection case (66) in described left and right sides membrane wall (63) UNICOM, horizontal collection case (62) and horizontal collection case (65) down in the membrane wall UNICOM of described back, described water route UNICOM of vertical collection case (61) and shell cylindrical shell (1);
Described two return smoke pipe (9) is arranged on the downside of described single flue (2); Be provided with the 3rd backhaul smoke pipe (12) in the described plug-in cylindrical shell (11), described the 3rd backhaul smoke pipe (12) is by flue (10) and described front smoke box (5) UNICOM; Also be provided with outlet flue (13) on the described plug-in cylindrical shell (11); Described plug-in cylindrical shell (11) is by the water route UNICOM of fairlead (16) with shell cylindrical shell (1).
2. a kind of horizontal single flue pulverized-coal fired boiler as claimed in claim 1 is characterized in that described second backhaul smoke pipe (9) and the 3rd backhaul smoke pipe (12) adopt the threaded flue structure.
3. a kind of horizontal single flue pulverized-coal fired boiler as claimed in claim 1 is characterized in that strile-back chamber (6) bottom of described membrane wall also is provided with ash port.
4. a kind of horizontal single flue pulverized-coal fired boiler as claimed in claim 1 is characterized in that the strile-back rear end of chamber (6) of described membrane wall also is provided with explosion proof door (67).
5. a kind of horizontal single flue pulverized-coal fired boiler as claimed in claim 1 is characterized in that the strile-back rear end of chamber (6) of described membrane wall also is provided with and blows ash mouthful (68).
6. as any one described a kind of horizontal single flue pulverized-coal fired boiler of claim 1-5, it is characterized in that described plug-in cylindrical shell (11) is set in parallel in the outside of described shell cylindrical shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220685034 CN203099786U (en) | 2012-12-12 | 2012-12-12 | Horizontal single-furnace pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220685034 CN203099786U (en) | 2012-12-12 | 2012-12-12 | Horizontal single-furnace pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203099786U true CN203099786U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220685034 Withdrawn - After Issue CN203099786U (en) | 2012-12-12 | 2012-12-12 | Horizontal single-furnace pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203099786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062746A (en) * | 2012-12-12 | 2013-04-24 | 杭州燃油锅炉有限公司 | Horizontal type pulverized coal boiler with single furnace pipe |
| CN103836611A (en) * | 2013-12-11 | 2014-06-04 | 杭州华源前线能源设备有限公司 | Shell type high-temperature superheated steam structure |
-
2012
- 2012-12-12 CN CN 201220685034 patent/CN203099786U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062746A (en) * | 2012-12-12 | 2013-04-24 | 杭州燃油锅炉有限公司 | Horizontal type pulverized coal boiler with single furnace pipe |
| CN103062746B (en) * | 2012-12-12 | 2014-11-12 | 杭州燃油锅炉有限公司 | Horizontal type pulverized coal boiler with single furnace pipe |
| CN103836611A (en) * | 2013-12-11 | 2014-06-04 | 杭州华源前线能源设备有限公司 | Shell type high-temperature superheated steam structure |
| CN103836611B (en) * | 2013-12-11 | 2015-09-09 | 杭州华源前线能源设备有限公司 | Pot-type high-temperature superheated steam structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20141112 |
|
| RGAV | Abandon patent right to avoid regrant |