CN201106842Y - Lustration combustion boiler - Google Patents
Lustration combustion boiler Download PDFInfo
- Publication number
- CN201106842Y CN201106842Y CNU2007200282893U CN200720028289U CN201106842Y CN 201106842 Y CN201106842 Y CN 201106842Y CN U2007200282893 U CNU2007200282893 U CN U2007200282893U CN 200720028289 U CN200720028289 U CN 200720028289U CN 201106842 Y CN201106842 Y CN 201106842Y
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- Prior art keywords
- combustion chamber
- burning
- jet
- flue
- chamber
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Abstract
The utility model discloses a cleanly-burning boiler, which includes a shell body, a base, an end enclosure and an inlet mechanism. A flame flue is arranged in the shell body, a fixed fire grate is installed at the bottom of the flame flue; the slag-removing chamber is arranged in the base beneath the fire grate; the water pipe is arranged upon the flame flue; the outward pipe connecting with the chimney is arranged on the top of the flame flue; the cleanly-burning boiler is characterized in that a positive pressure laminate burning chamber, a rotational flow burning chamber and a stream flow burning chamber are orderly arranged from the fixed fire grate to the next transverse water pipe inside the flame flue of the hearth; the primary inlet pipe of the inlet mechanism is communicated with the slag-removing chamber, and the secondary inlet pipe is connected to the rotational flow burning chamber. The utility model ingeniously combines the fixed fire grate positive pressure laminate burning, secondary air rotational flow burning and flame jetting burning, solves the problems of the lack of the air in the previous period of burning and fixed fire grate positive laminate burning, the large loss of chemical incomplete combustion, the surplus of air in the burning later period and evident periodicity of large heat loss with the smoke discharge, and have a prominent quality of saving energy and reducing exhaust.
Description
Technical field
The utility model relates to a kind of cleaning combustion boiler, belongs to field of boilers.
Background technology
China produces and uses coal-burned industrial boiler and the maximum country of domestic boiler in the world, and annual boiler fired coal accounts for 1/3 of national raw coal output.Wherein, the following boiler of 1T/h adopts fixed grate layer combustion mode more, no desulfation dust-extraction device, there is not reliable smoke elimination measure again, the atmosphere emissions of boiler is in atmosphere, this equipment all is based on bituminous coal, and the problem of over-emitting black exhaust is quite outstanding, and environmental pollution and energy waste are very serious.
The utility model content
According to above deficiency of the prior art, technical problem to be solved in the utility model provides a kind of cleaning combustion boiler, energy-saving and environmental protection.
The scheme that its technical problem that solves the utility model adopts is: cleaning combustion boiler, comprise housing, base, end socket and air inlet mechanism, enclosure interior is provided with flue, the flue bottom installs and fixes fire grate, be to remove the grit chamber in the base of fire grate below, flue top is provided with horizontal water tube, the flue top is provided with impact tube and is connected with chimney, it is characterized in that in the burner hearth of flue being malleation layer combustion chamber to setting gradually next horizontal row water pipe from fixed grate, swirl combustion chamber and jet bore in combustion chamber, a blast pipe of air inlet mechanism communicates with removing the grit chamber, and secondary wind inleting tube connects swirl combustion chamber.
The utility model mainly is that malleation layer combustion, swirl flow combustion and jet combustion are organically combined, are interconnected, and its effect can reduce the emissions of boiler significantly, can obviously improve the thermal efficiency of boiler.
The concrete preferred structure mode of the utility model is:
Described flue is made up of upper furnace and lower furnace, upper furnace top is provided with horizontal water tube, the top connects impact tube, swirl combustion chamber and jet bore in combustion chamber are set in the upper furnace, in the lower furnace is malleation layer combustion chamber, the lower furnace top is a dome, middle aditus laryngis fireworks channel communicates with swirl combustion chamber, described swirl combustion chamber is a toroidal combustion chamber, toroidal combustion chamber top is provided with the heat accumulation plate of flame jet, toroidal combustion chamber is surrounded by refractory material, refractory material is outward an annular bellows, and annular bellows is communicated with the secondary wind inleting tube of outside air inlet mechanism, is fixed with two or more secondary wind jet nozzle in the annular firing locular wall refractory material, the outlet of secondary wind jet nozzle is evenly distributed on the internal diameter tangent line of toroidal combustion chamber, and secondary wind jet nozzle communicates with annular bellows.
The outlet downtilt angles of described secondary wind jet nozzle is 0 °-30 °.
It is more than one or 1 that the heat accumulation plate of described band flame jet is provided with flame jet quantity.Heat accumulation plate is communicated with swirl combustion chamber with jet bore in combustion chamber, the top of jet bore in combustion chamber is provided with arc heat accumulation plate, have several flue gas openings on the arc heat accumulation plate, arc heat accumulation plate is assembled in the upper position of next horizontal row water pipe, and the following space of arc heat accumulation plate is a jet bore in combustion chamber.The top of jet bore in combustion chamber is the convection section smoke-box, in the convection section smoke-box horizontal water tube is set.
The operation principle of the utility model cleaning combustion boiler and the beneficial effect that is had are:
1, the utility model fixed grate malleation grate firing, secondary wind momentum of impinging jet swirl flow combustion, flame jet jet combustion, three kinds of clean combustion technology that combustion system organically combines, solved fixed grate malleation grate firing, burning air in early stage is big for quantity not sufficient, loss of the inadequacy burning for chemistry mechanics reason, and burning later stage air supplies the tangible problem of periodicity that amount is superfluous, heat loss due to exhaust gas is big.Its purpose is to design the novel energy-saving emission-reducing vertical steam boiler, supply water temperature is lower than 120 ℃ vertical shell hot-water boiler and normal-pressure hot-water boiler.The utlity model has the energy-saving and emission-reduction outstanding feature.And have than remarkable social benefit and environmental benefit.
2, the momentum of impinging jet of secondary wind is along toroidal combustion chamber internal diameter tangential direction high-speed rotational, secondary wind momentum of impinging jet and high-speed rotational burning, strong turbulent flow and the stirring of thermal-flame, prolonged fuel gas, duff grain and flying dust in the swirl flow combustion indoor flow process and the time of staying, helped fully mixing and burning.Reduce Fuel Consumption, improved boiler efficiency.
3, under secondary wind momentum of impinging jet eddy flow action of centrifugal force, unburnt duff grain and flying dust are deposited in burning once more on the burning zone in the burner hearth, have reduced the boiler smoke dust exhausting concentration.
4, the draft that produces of secondary wind momentum of impinging jet and swirl flow combustion thermal-flame from the flame column of heat accumulation plate flame jet jet combustion ejection, enters jet combustion in the jet bore in combustion chamber, jet combustion further refinement the burning and the after-flame of fuel gas.
5, blast pipe and secondary wind inleting tube all are equipped with valve, can regulate wind supply quantity on demand according to the operating load of boiler, and be easy to operate, uses simple.
Description of drawings
Fig. 1 is a structural representation of the present utility model,
Fig. 2 is the structural representation of air inlet structure of the present utility model,
Fig. 3 is the A-A view of Fig. 1,
Fig. 4 is the B-B view of Fig. 2.
Fig. 1-the 4th, most preferred embodiment of the present utility model is among Fig. 1-4: 1, base 2, skimming door 3, the U type is got a foothold and is enclosed 4, lower furnace 5, elliposoidal dome 6, tube sheet 7, swirl combustion chamber 8, heat accumulation plate 9, flame-observing hole 10, upper furnace 11, horizontal water tube 12, upper furnace top 13, impact tube 14, housing 15, end socket 16, Pressure gauge 17, chimney 18, safety valve 19, jet bore in combustion chamber 20, refractory material 21, coal-feeding door 22, fixed grate 23, blowoff valve 24, ventilation blower 25, a blast pipe 26, valve 27, secondary wind inleting tube 28, annular bellows 29, outlet valve 30, water level meter 31, water intaking valve 32, secondary wind jet nozzle 33, arc heat accumulation plate 34 access doors malleation layer combustion chambers 35 36 flue gas openings
The specific embodiment
As shown in the figure, cleaning combustion boiler, comprise housing 14, base 1, end socket 15 and air inlet mechanism, enclosure interior is provided with upper furnace 10 and lower furnace 4, lower furnace 4 is connected with U-shaped leftover bits and pieces circle 3, the bottom installs and fixes fire grate 22, be to remove the grit chamber in the base 1 of fire grate below, upper furnace 10 tops are provided with horizontal water tube 11, the top connects impact tube 13 and is connected with chimney 17, swirl combustion chamber 7 and jet bore in combustion chamber 19 are set in the upper furnace 10, in the lower furnace 4 is malleation layer combustion chamber 35, lower furnace 4 tops are elliposoidal dome 5, middle aditus laryngis fireworks channel communicates with swirl combustion chamber 7, described swirl combustion chamber 7 is a toroidal combustion chamber, toroidal combustion chamber top is provided with the heat accumulation plate 8 of flame jet, the annular firing locular wall is surrounded by refractory material 20, outside the refractory material 20 is annular bellows 28, annular bellows 28 is communicated with the secondary wind inleting tube 27 of outside air inlet mechanism, be fixed with two or more secondary wind jet nozzle 32 in the annular firing locular wall refractory material 21, the outlet of secondary wind jet nozzle is evenly distributed on the internal diameter tangent line of toroidal combustion chamber, and outlet downtilt angles α is 0 °-30 °, and secondary wind jet nozzle 32 communicates with annular bellows 28.
It is more than one or 1 that the heat accumulation plate 8 of band flame jet is provided with flame jet quantity.Heat accumulation plate 8 is communicated with swirl combustion chamber 7 with jet bore in combustion chamber 19, the top of jet bore in combustion chamber 19 is provided with arc heat accumulation plate 33, have several flue gas openings 36 on the arc heat accumulation plate 33, arc heat accumulation plate 33 is assembled in the upper position of next horizontal row water pipe 11, and the following space of arc heat accumulation plate is a jet bore in combustion chamber.The top of jet bore in combustion chamber is the convection section smoke-box, and horizontal water tube 11 is set in the convection section smoke-box.
Assemblies such as Pressure gauge 16, safety valve 18, coal-feeding door 21, skimming door 2, flame-observing hole 9, water intaking valve 31, outlet valve 29, blowoff valve 23, hand hole, access door 34 also are installed on the cleaning combustion boiler.
The course of work: 1, new coal is dropped into by coal-feeding door 21, falls on the fuel bed of the malleation layer combustion chamber 6 of burning.Just the new coal bottom of dropping into is subjected to the heating of combustion fuel layer, and top is subjected to the hyperthermia radiation of thermal-flame and refractory material 20 and heat accumulation plate 8 in the burner hearth, catches fire, burning condition is very superior.New coal is owing to upper and lower being heated, and temperature raises, and the moisture in the coal is dried because of oven dry, volatile matter fuel gas such as destructive distillation effusion methane, hydrogen in the while coal, and this one deck is the drying and carbonization layer.When ignition temperature is enough high, the furnace cavity internal combustion of volatile matter fuel gas more than fuel bed, and send clear flame.
2, along with the fuel bed burning is fallen gradually, become lime-ash during near fixed grate 22, this one deck is an ash bed.
3, ventilation blower 24 air that will burn and need is through blast pipe 25 and secondary wind inleting tube 27 air feeds respectively.Wind is indoor through the slagging-off that blast pipe 25 enters base 1, pass fixed grate 22 and ash bed from bottom to top, see through the heated air of ash bed and rise, meet with the coke of red heat, airborne oxygen carburet generates carbon dioxide, and this one deck is an oxide layer.
4, carbon dioxide continues to rise, and with top hot coke effect reduction reaction takes place, and makes carbon dioxide reduction become carbon monoxide, and this one deck is a reducing zone.Volatile matter fuel gas such as the methane that destructive distillation is overflowed in carbon monoxide that reduction generates and the coal, hydrogen, rising with thermal-flame enters that swirl flow combustion is indoor to burn away.
When 5, new coal has just been put on the fixed grate 22, the coal seam is the thickest, the flowing resistance maximum, the air capacity that burning needs is also maximum, at this moment air will appear for the quantity not sufficient phenomenon, incomplete combustion and over-emitting black exhaust, the fuel gas of incomplete combustion such as methane, hydrogen, carbon monoxide etc., the flame of with high-temp combustion is common to rise and compiles that to enter swirl flow combustion indoor.
6, be accompanied by the continuous burning of fuel, the coal seam is attenuate gradually, and flowing resistance reduces, and the needed air that burns also reduces gradually, and this is the air capacity excess phenomenon to occur, and superfluous air also rises and assembles that to enter swirl flow combustion indoor.
7, put into coal seam on the fixed grate 22 when inhomogeneous, the place of balk or pine, its flowing resistance is little, and the air capacity of passing through is many, and burn rate is fast, " burner " phenomenon at this moment will occur.Under the effect of an air intake blast of burner hearth, duff grain and flying dust are blown afloat, and to enter swirl flow combustion indoor along with the thermal-flame that rises also suspends.
8, swirl combustion chamber 7 and heat accumulation plate 8 are subjected to the radiation of thermal-flame, have put aside a large amount of thermal energy.The thermal energy of swirl combustion chamber 7 savings conducts the interior ring inwall to annular bellows, the heat flow density of the interior ring inwall of annular bellows 28, and by the heat absorption of the secondary air in annular bellows 28 runners, the secondary wind after the heat absorption has improved wind-warm syndrome again.Secondary wind enters in the air flow channel of annular bellows 28 through secondary wind inleting tube 27, respectively from the jet orifice high-speed jet of secondary wind jet nozzle 32.The momentum of impinging jet of secondary wind is along swirl combustion chamber internal diameter tangential direction high-speed rotational.Secondary wind momentum of impinging jet and high-speed rotational burning, strong turbulent flow and the stirring of thermal-flame, prolong fuel gas, duff grain and flying dust in the swirl flow combustion indoor flow process and the time of staying, strengthened the mixing and the burning of oxygen, duff grain and flying dust in fuel gas and the excess air.Under secondary wind momentum of impinging jet eddy flow action of centrifugal force, unburnt duff grain and flying dust are deposited in burning once more on the interior burning zone of burner hearth.Meanwhile, the flow velocity of the rising flue gas of swirl combustion chamber porch is the 1/20-1/30 of secondary wind jet velocity, and the momentum of rising flue gas is relative static pressure, and the center of the above swirl combustion chamber of jet orifice of secondary wind jet nozzle 32 produces low-pressure bubble.The draft that the thermal-flame of secondary wind momentum of impinging jet and swirl flow combustion produces from the flame column of heat accumulation plate 8 flame jet jet combustions ejection, enters jet combustion in the jet bore in combustion chamber, jet combustion further refinement the burning and the after-flame of fuel gas.When the flame column of jet combustion is flowed through exhanst gas outlet, heat conducted given arc heat accumulation plate 33.Its temperature is improved carry out accumulation of heat, carry out heat release after the convection heating surface heat absorption, the flue gas behind the heat release enters the convection section smoke-box, and convection section smoke-box heating surface heat absorption back flue-gas temperature reduces, and enters atmosphere by boiler chimney 17.
9, the flue-gas temperature of being discharged by boiler chimney 17 is lower than 150 ℃, and the thermal efficiency is higher than 79%, and thermal power reaches more than 110%, and blackness of exhaustion is less than 1 lingemann grade, and smoke dust discharge concentration is less than 150mg/Nm
3
Claims (4)
1, a kind of cleaning combustion boiler, comprise housing, base (1), end socket (15) and air inlet mechanism, enclosure interior is provided with flue, the flue bottom installs and fixes fire grate (22), be to remove the grit chamber in the base of fire grate below, flue top is provided with horizontal water tube (11), the flue top is provided with impact tube (13) and is connected with chimney (17), it is characterized in that in the burner hearth of flue being malleation layer combustion chamber (35) to setting gradually next horizontal row water pipe (11) from fixed grate (22), swirl combustion chamber (7) and jet bore in combustion chamber (19), a blast pipe (25) of air inlet mechanism communicates with removing the grit chamber, and secondary wind inleting tube (27) connects swirl combustion chamber.
2, cleaning combustion boiler according to claim 1, it is characterized in that described flue is made up of upper furnace (10) and lower furnace (4), upper furnace (10) top is provided with horizontal water tube (11), the top connects impact tube (13), swirl combustion chamber (7) and jet bore in combustion chamber (19) are set in the upper furnace, in the lower furnace (4) is malleation layer combustion chamber (35), the lower furnace top is a dome, middle aditus laryngis fireworks channel communicates with swirl combustion chamber, described swirl combustion chamber (7) is a toroidal combustion chamber, toroidal combustion chamber top is provided with the heat accumulation plate (8) of flame jet, the annular firing locular wall is surrounded by refractory material (20), refractory material is outward an annular bellows (28), annular bellows (28) is communicated with the secondary wind inleting tube (27) of outside air inlet mechanism, be fixed with two or more secondary wind jet nozzle (32) in the annular firing locular wall refractory material (20), the outlet of secondary wind jet nozzle is evenly distributed on the internal diameter tangent line of toroidal combustion chamber, and secondary wind jet nozzle (32) communicates with annular bellows (28).
3, cleaning combustion boiler according to claim 2, the outlet downtilt angles that it is characterized in that described secondary wind jet nozzle (32) are 0 °-30 °.
4, cleaning combustion boiler according to claim 2, it is characterized in that the described heat accumulation plate (8) that has flame jet is communicated with swirl combustion chamber (7) with jet bore in combustion chamber (19), the top of jet bore in combustion chamber is provided with arc heat accumulation plate (33), have several flue gas openings (36) on the arc heat accumulation plate, arc heat accumulation plate is assembled in the upper position of next horizontal row water pipe, and the following space of arc heat accumulation plate is jet bore in combustion chamber (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200282893U CN201106842Y (en) | 2007-10-09 | 2007-10-09 | Lustration combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200282893U CN201106842Y (en) | 2007-10-09 | 2007-10-09 | Lustration combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106842Y true CN201106842Y (en) | 2008-08-27 |
Family
ID=39958649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200282893U Expired - Fee Related CN201106842Y (en) | 2007-10-09 | 2007-10-09 | Lustration combustion boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106842Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588998A (en) * | 2012-02-29 | 2012-07-18 | 山东圣威新能源有限公司 | Smoke eliminating and energy saving combustion equipment of boiler with fixed fire grates |
| CN106918049A (en) * | 2017-05-05 | 2017-07-04 | 郑州大学 | Gas fired-boiler air stage feeding device |
-
2007
- 2007-10-09 CN CNU2007200282893U patent/CN201106842Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588998A (en) * | 2012-02-29 | 2012-07-18 | 山东圣威新能源有限公司 | Smoke eliminating and energy saving combustion equipment of boiler with fixed fire grates |
| CN106918049A (en) * | 2017-05-05 | 2017-07-04 | 郑州大学 | Gas fired-boiler air stage feeding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20111009 |