CN1570466A - Gas diverting type boiler - Google Patents
Gas diverting type boiler Download PDFInfo
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- CN1570466A CN1570466A CN 03146403 CN03146403A CN1570466A CN 1570466 A CN1570466 A CN 1570466A CN 03146403 CN03146403 CN 03146403 CN 03146403 A CN03146403 A CN 03146403A CN 1570466 A CN1570466 A CN 1570466A
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- destructive distillation
- boiler
- coal
- pipe
- dry distillation
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Abstract
The invention relates to a gas bypass type boiler. It includes main body, funneled bunker set on top of main body, taper dry distillation tube which communicates with discharge hatch and closes to combustion layer of hearth. There is a dry distillation prick in dry distillation tube between which dry distillation room is formed. There is a rotate coke-pushing ram below dry distillation prick and an air chamber below coke-pushing ram. The air chamber has an airway with an air cap. The stove can decoke and denitride effectively to reduce atmospheric pollution made by coal combustion in boiler. And acid rain is avoided. At the same time, the collected sulfur and nitrogen is used as resource, which can both save expense of fathering air pollution and create fortune. Enormous social and economic benefit can be made. Cokes fallen from dry distillation room diffuse around. There are carbon, fire and ash from the top down. The ash will not be coking because there is no reducing gas in it. So it can be very easily discharged from ash expeller. The invention can be applied in kinds of boilers and kiln hoods in various tons.
Description
Technical field
The present invention relates to a kind of boiler, specifically, relate to a kind of the forward and backward two kinds of boilers that the gas shunting is discharged that produce of coal combustion.
Background technology
The boiler of current use is made up of two parts, and the top is a pot, and the bottom is a stove.Its coal combustion process is horizontal stoking, directly coal is interpolated the burner hearth burning, causes coal will experience for three stages in burner hearth: to prepare combustion phases, combustion phases and after-flame stage.This combustion method causes in the burner hearth of any one burning, always has two kinds of gases to exist simultaneously.A kind of is that coal is being prepared the volatile matter gas that combustion phases is separated out, and another kind is the gas of carbon burning discharging.Though these two kinds of gases exist in burner hearth simultaneously, the time that they produce is different with the space.A kind of preparation combustion phases at coal produces, and the volatile matter gas of separating out is hydrogen, oxygen, nitrogen, sulphur complex element.A kind of is to produce in the burning of coal stage, and the gas of carbon burning discharging is carbon dioxide.Although burnt a part when volatile matter gas that coal preparation combustion phases is separated out enters combustion phases, sulphur burns endless, and nitrogen does not burn.It is to cause the air-polluting root that two kinds of gas mixing enter atmosphere.
Summary of the invention
The objective of the invention is to overcome two kinds of gases and mix the defective that lift-off causes atmosphere pollution, the gas shunting boiler that provides a kind of gas that produces during with the fugitive constituent hydrogen in the coal, oxygen, nitrogen, sulphur gas and coal combustion to discharge respectively.
Gas shunting boiler of the present invention.Comprise boiler body, be provided with funnel shaped coal bunker at the top of main body, communicate with the discharging opening of coal bunker, lower end and the close taper destructive distillation pipe of burner hearth burning zone, be provided with the fractionation awl in the destructive distillation pipe, space between the two forms the destructive distillation chamber, and its outer periphery is equipped with water-cooling wall, below fractionation awl, be provided with the coke-pushing ram of rotation and be arranged on air compartment below the coke-pushing ram, this air compartment has the air vent of band blast cap, also is provided with fire door on the described main body, is positioned at the top of destructive distillation pipe bottom.
Described water-cooling wall comprises the annular lower linked box that is positioned at destructive distillation pipe bottom, and with the vertical water pipe that belt lower linked box vertically is communicated with, its quantity determines that according to the size of stove the upper end of this vertical water pipe is connected with the water jacket of main body or upper header.
The lower end of described infundibulate coal bunker has the passage of taper.
The tapering of described destructive distillation pipe, fractionation awl and passage is identical, and the upper end of destructive distillation pipe is sleeved on the periphery of passage, joins with funnel, and its lower end is placed on the annular lower collecting box, forms gas channel between destructive distillation inside pipe wall and the passage outer wall.
The part that described infundibulate coal bunker and gas channel join is provided with the wireway of the hydrogen of separating out in the transporting retort process, oxygen, nitrogen, sulphur gas.
Described air compartment is connected with blower fan, and the quantity of the air vent on it is determined according to boiler size and coal consumption.
Be provided with the coal supply above coal bunker, this supply is the auger conveyor of conveying continuously or the conveying device of fluid pressure type.
Described coke-pushing ram is a cone, and the diameter of its upper surface should be equal to or less than the lower end diameter of fractionation awl, and the external diameter of the diameter of lower surface and destructive distillation pipe lower surface adapts.
Vertically be provided with pull bar in the water pipe, this pull bar is by fixed head and bolt, and an end is connected with main wall, and the other end is connected with lower collecting box.
Gas shunting boiler of the present invention is that the coal carbonization principle is applied in the boiler combustion, makes full use of the characteristic and the burning of coal rule of coal element, has the following advantages and benefit:
1. in the mode of gas shunting, make coal desulfurization simultaneously, denitrogenation before burning.Minimizing even elimination boiler fired coal have been avoided the generation of acid rain to the pollution of atmosphere; Collect sulphur simultaneously and nitrogen changes into resource.Both saved expense, created wealth again, had great social benefit and economic benefit air pollution treatment;
2. popular in the world high-temperature air burning is to add hot-air, can not remove sulphur, nitrogen.The present invention adds hot coal, can remove sulphur, nitrogen simultaneously, is better than high-temperature air burning, for the research of Challenging the Limits temperature lays the first stone;
3. burning velocity will increase more than 10 times than raw coal, the coal that existing boiler was burnt in 10 minutes, and boiler of the present invention can be burnt in 1 minute.Exerting oneself or efficient of temperature, combustible loss and the boiler of the burning velocity decision burner hearth in boiler combustion district.The variation of burning time brings the variation of combustion space, and the science of body of heater changes, for save a large amount of iron and steel, coal creates conditions;
4. destructive distillation pipe and fractionation tapered sleeve in the boiler of the present invention are fitted together, and can enlarge synchronously and dwindle, and have both made the coal seam thickness unanimity of destructive distillation, are heated evenly, and destructive distillation is successful, can increase the quantity of destructive distillation coal again, satisfy the needs of different tonnage boilers;
The coke that falls from the destructive distillation chamber to around diffusion, be charcoal, fire, ash order from the top down, do not have the reducibility gas can coking in the ash, very easily discharge by soot blower.
6. boiler, the various kiln of applicable each tonnage of gas shunting structure of boiler of the present invention.
Below in conjunction with accompanying drawing, gas shunting boiler of the present invention is described further.
Description of drawings
Fig. 1 is the schematic diagram of gas shunting boiler of the present invention.
The specific embodiment
Referring to Fig. 1, gas shunting boiler of the present invention comprises boiler body 4, be provided with funnel shaped coal bunker 2 at the top of main body 4, communicate with the discharging opening of coal bunker 2, the taper destructive distillation pipe 5 that lower end and burner hearth burning zone are close, in destructive distillation pipe 5, be provided with fractionation awl 6, space between the two forms the destructive distillation chamber, at the coke-pushing ram 8 that is provided with rotation below the fractionation awl 6 be arranged on air compartment 9 below the coke-pushing ram 8, this air compartment 9 has the air vent of band blast cap, also be provided with fire door on the described main body 4, its position is positioned at the top of destructive distillation pipe 5 bottoms, for the usefulness of situation in igniting or the inspection stove.
In order to control the temperature of destructive distillation pipe 5, outer periphery at destructive distillation pipe 5 is equipped with the water-cooling wall 7 that is used for thermal resistance and heat absorption, this water-cooling wall comprises the annular lower linked box 11 that is positioned at destructive distillation pipe 5 bottoms, the vertical water pipe 12 that vertically is communicated with belt lower linked box, its quantity is determined according to the size of stove, be generally the 20-30 root, the upper end of this vertical water pipe is connected with the water jacket of main body 4.The inner round wall of described annular lower linked box 11 is provided with bearing, so that support destructive distillation pipe 5.
The lower end of described infundibulate coal bunker 2 has the passage 14 of taper, and is up-small and down-big, and coal charge can not stop up during by this pipe.
Described destructive distillation pipe 5, fractionation awl 6 is identical with the tapering of passage 14, the upper end of destructive distillation pipe 5 is sleeved on the periphery of passage 14, join with funnel, its lower end is placed on the bearing of annular lower collecting box 11, form gas channel between destructive distillation pipe 5 inwalls and passage 14 outer walls, the hydrogen that coal produces in retort process, oxygen, nitrogen, sulphur are upwards discharged thus.
Described coke-pushing ram 8 is a cone, and the diameter of its upper surface should be equal to or less than the lower end diameter of fractionation awl 6, and the external diameter of the diameter of lower surface and destructive distillation pipe 5 lower surfaces adapts.This coke-pushing ram 8 is sleeved on the support column that supports fractionation awl 6, is driven by gearbox by motor (not looking out).
In order to gain in strength, vertically be provided with pull bar 13 in the water pipe 12, this pull bar is connected with main body 4 by fixed head and bolt 18, one ends, and the other end is connected with lower collecting box 11.
Described infundibulate coal bunker 3 is positioned at the gas channel part, and promptly the top of the gas channel that forms between destructive distillation pipe 5 and the passage 14 is provided with wireway 3, with gases such as the hydrogen of separating out in the transporting retort process, oxygen, nitrogen, sulphur.
Described air compartment 9 is connected with air blast (not looking out), air blast in it.The quantity of the air vent on it is determined according to boiler size and coal consumption.
Be provided with coal supply 1 above coal bunker 2, this coal supply can be auger or fluid pressure type conveying device.
Gas shunting boiler of the present invention has adopted dry distillation of coal principle, has utilized coal through destructive distillation, and the hydrogen in the coal, oxygen, nitrogen, element sulphur are heated and promptly turn to gas and separate out, and carbon is under secluding air, though the characteristic that also can not separate out through high temperature.Coal adds from boiler top, enter in the destructive distillation chamber that forms between destructive distillation pipe 5 and the fractionation awl 6, this destructive distillation chamber be feed track to the burner hearth stoking be again the heating road that heats time of utilizing coal in the destructive distillation chamber, to store, pass through for coal.The destructive distillation chamber is suitable for reading is sealed not make by coal seam thick in the coal bunker 2 and enters air, the air of its end opening is again by the flame after-flame in the burner hearth, and upper and lower opening all can not enter air and promptly form the dry distillation area that secluding air adds heat-flash.Entered burner hearth by the coke after the destructive distillation and since the effect of the coke-pushing ram 8 that rotates to around diffusion, be charcoal, fire, ash order from the top down, do not have the reducibility gas can coking in the ash, very easily discharge by soot blower 10.
During work, coal low temperature distillation in the destructive distillation chamber, when temperature below 100 ℃ the time, coal is in drying stage, and when being heated to 200 ℃, fugitive constituent begins to separate out, begin when being heated to 350 ℃ to soften, bond, temperature rises to 550 ℃ and begins to solidify, and solidifies to make the coal line of bonding be cleaved into fritter, becomes coke and/or semicoke state.The hydrogen of separating out, oxygen, nitrogen, sulphur gas rise along locular wall, introduce by gas channel and wireway 3 and clean tower, collect sulphur, nitrogen comprehensive utilization.Other gas both can be collected, and also can melt down burning.Sulphur and nitrogen do not enter in the atmosphere, have reduced the factor that forms acid rain.
Claims (9)
1. gas shunting boiler, comprise boiler body (4), it is characterized in that being provided with funnel shaped coal bunker (2) at the top of main body (4), communicate with the discharging opening of coal bunker (2), the taper destructive distillation pipe (5) that lower end and burner hearth burning zone are close, in destructive distillation pipe (5), be provided with fractionation awl (6), space between the two forms the destructive distillation chamber, its outer periphery is equipped with water-cooling wall (7), bore the air compartment (9) that (6) below is provided with the coke-pushing ram (8) of rotation and is arranged on coke-pushing ram (8) below in fractionation, this air compartment (9) has the air vent of band blast cap, described main body also is provided with fire door on (4), is positioned at the top of destructive distillation pipe (5) bottom.
2. boiler according to claim 1, it is characterized in that described water-cooling wall (7) comprises the annular lower linked box (11) that is positioned at destructive distillation pipe (5) bottom, the vertical water pipe (12) that vertically is communicated with belt lower linked box, its quantity determines that according to the size of stove the upper end of this vertical water pipe is connected with the water jacket or the upper header of main body (4).
3. boiler according to claim 1 and 2 is characterized in that the lower end of described infundibulate coal bunker (2) has the passage (14) of taper, and is up-small and down-big.
4. boiler according to claim 3, it is characterized in that described destructive distillation pipe (5), fractionation awl (6) is identical with the tapering of passage (14), the upper end of destructive distillation pipe (5) is sleeved on the periphery of passage (14), join with funnel, its lower end is placed on the annular lower collecting box (11), forms gas channel between destructive distillation pipe (5) inwall and passage (14) outer wall.
5. boiler according to claim 4 is characterized in that the part that described infundibulate coal bunker (2) and gas channel join, and is provided with the wireway (2) of the hydrogen of separating out in the transporting retort process, oxygen, nitrogen, sulphur gas.
6. boiler according to claim 5 is characterized in that described coke-pushing ram (8) is a cone, and the diameter of its upper surface should be equal to or less than the lower end diameter of fractionation awl (6), and the external diameter of the diameter of lower surface and destructive distillation pipe (5) lower surface adapts.
7. boiler according to claim 6 is characterized in that being provided with coal supply (1) in the top of coal bunker (2), and this supply is the auger conveyor of conveying continuously or the conveying device of fluid pressure type.
8. boiler according to claim 7 is characterized in that described air compartment (12) is connected with blower fan, and the quantity of the air vent on it is determined according to boiler size and coal consumption.
9. boiler according to claim 8 is characterized in that vertically being provided with pull bar (13) in the water pipe (12), and this pull bar is by fixed head and bolt, and an end is connected with main wall, and the other end is connected with lower collecting box (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146403 CN1268872C (en) | 2003-07-11 | 2003-07-11 | Gas diverting type boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146403 CN1268872C (en) | 2003-07-11 | 2003-07-11 | Gas diverting type boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1570466A true CN1570466A (en) | 2005-01-26 |
| CN1268872C CN1268872C (en) | 2006-08-09 |
Family
ID=34471703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03146403 Expired - Fee Related CN1268872C (en) | 2003-07-11 | 2003-07-11 | Gas diverting type boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1268872C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786976A (en) * | 2012-08-06 | 2012-11-21 | 山西鑫立能源科技有限公司 | Firing coal cooling device of coal pyrolyzing furnace |
| CN107022675A (en) * | 2017-05-18 | 2017-08-08 | 刘慧南 | A kind of roasting/Distallation systm and its application |
-
2003
- 2003-07-11 CN CN 03146403 patent/CN1268872C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786976A (en) * | 2012-08-06 | 2012-11-21 | 山西鑫立能源科技有限公司 | Firing coal cooling device of coal pyrolyzing furnace |
| CN107022675A (en) * | 2017-05-18 | 2017-08-08 | 刘慧南 | A kind of roasting/Distallation systm and its application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1268872C (en) | 2006-08-09 |
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Granted publication date: 20060809 Termination date: 20160711 |