CN209926363U - Hearth of garbage incinerator - Google Patents
Hearth of garbage incinerator Download PDFInfo
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- CN209926363U CN209926363U CN201920138595.5U CN201920138595U CN209926363U CN 209926363 U CN209926363 U CN 209926363U CN 201920138595 U CN201920138595 U CN 201920138595U CN 209926363 U CN209926363 U CN 209926363U
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- arch
- ceiling
- hearth
- flue gas
- furnace
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Abstract
The utility model provides a waste incinerator furnace, waste incinerator furnace includes the counter-flow type combustion chamber, the counter-flow type combustion chamber is including burning the grate, preceding arch, back arch, ceiling, burn the grate setting in the front arch, the back arch and the below of ceiling, preceding arch and back arch relative separation set up, form the export of furnace flue gas between the two, the furnace flue gas flows from the export after carrying out heat convection between the ceiling and burning the grate, the counter-flow type combustion chamber still includes the arc connecting portion that arch and ceiling behind the smooth ground connection. The utility model discloses a waste incinerator furnace changes the camber arch into big chamfer after, burns burning furnace outlet width and increases, and flue gas flow area increases, has guaranteed the dwell time of flue gas in burning furnace. Meanwhile, the structural form of the large chamfer angle is beneficial to the automatic sliding of the coke blocks formed in the initial stage, and the coking speed is slowed down.
Description
Technical Field
The utility model relates to a waste incineration technology, in particular to waste incinerator furnace.
Background
The front arch of the combustion chamber of the existing incinerator adopts an inclined plane type arch, so that smoke is promoted to flow to the front of the incinerator, and newly-entered garbage is heated and dried by utilizing radiant heat; the rear arch and the ceiling are used for guiding high-temperature flue gas above the fire grate to the front arch area, enhancing radiant heat and convective heat transfer of an ignition area and a combustion area, and mostly adopting long and low inclined arch. For high-moisture and low-calorific-value garbage, a counter-flow combustion chamber is mostly adopted, and a camber arch is often arranged between a rear arch and a hearth ceiling for increasing the radiation heat exchange area and strengthening the flue gas disturbance.
As shown in fig. 1, a conventional incinerator 100 includes a counter-flow type combustion chamber 110, the counter-flow type combustion chamber 110 includes an incineration grate 111, a front arch 112, a rear arch 113, and a ceiling 114, and a curved arch 115 is provided between the rear arch and a furnace ceiling. One end of the incineration grate 111 is connected with the feed inlet a, and the other end is connected with the slag falling port b.
In northern areas, particularly in medium and small cities, the ash content in garbage is high, a large amount of fly ash particles generated during garbage combustion flow along with flue gas, the speed is reduced when high-temperature flue gas flows through a camber arch, the speed is reduced to the lowest when the high-temperature flue gas bypasses the camber arch, at the moment, the ash particles in a viscous molten state are easy to deposit and adhere to a rear arch before being cooled to a solid state, coking is caused, once the coking is started, the speed is increased, and front and rear arch coke blocks are connected together when the coking is serious, so that the normal operation of an incinerator is influenced.
Therefore, there is a need to provide a waste incinerator furnace to at least partially solve the above problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a garbage incinerator furnace which is characterized in that the garbage incinerator furnace comprises a counter-flow type combustion chamber,
the counter-flow combustion chamber comprises an incineration grate, a front arch, a rear arch and a ceiling,
the incineration grate is arranged below the front arch, the rear arch and the ceiling, the front arch and the rear arch are opposite and spaced, a hearth flue gas outlet is formed between the front arch and the rear arch, the hearth flue gas flows out from the outlet after the convection heat exchange is carried out between the ceiling and the incineration grate,
wherein the reverse flow combustor further comprises an arc-shaped connecting portion smoothly connecting the rear arch and the ceiling.
In one example, the arc-shaped connection portion forms an arc having a central angle of no greater than 60 degrees.
In one example, one end of the incineration grate is connected with the feeding hole, and the other end of the incineration grate is connected with the slag falling hole.
In one example, the incineration grate extends downwards from one end close to the feeding hole to one end close to the slag falling hole in an inclined mode.
In one example, the front arch includes a ramp arch.
In one example, the rear arch includes a beveled arch.
In one example, the canopy includes a ramp arch.
The utility model provides a novel garbage incinerator furnace, garbage incinerator furnace include the counter-flow type combustion chamber, and the counter-flow type combustion chamber encircles the arc connecting portion of ceiling after encircleing after burning grate, preceding arch, back arch, ceiling and level and smooth connection. The arc-shaped connecting part comprises a large chamfer structure.
The utility model discloses with the connected mode between arch and the ceiling behind by the camber change into the structural style of big chamfer, the steel sheet meets with the ceiling after bending. When high-temperature flue gas generated after garbage is incinerated on a grate flows to an incinerator outlet along a ceiling, the high-temperature flue gas directly flows upwards along a rear arch around a chamfer angle due to no winding arch, the flow velocity of the flue gas is increased when flowing around the winding arch oppositely, the deposition amount of fly ash particles in the flue gas on the rear arch is reduced, and meanwhile, the structural form of a large chamfer angle is beneficial to the automatic falling of a coke block formed in the initial stage, and the coking speed is reduced. After the camber arch is changed into the large chamfer, the width of the outlet of the incinerator is increased, the smoke circulation area is increased, and the retention time of smoke in the incinerator is ensured.
In addition, after the camber arch is removed, the hearth pouring process is simplified, and the pouring cost is saved. Because only the form of the rear arch is changed, the change amount is small, and the method is also suitable for the technical transformation of the running old unit.
The utility model provides a novel waste incinerator furnace, this furnace have the anti coking can be good, be convenient for pour and advantages such as installation, both have been applicable to the project of newly-building, also are applicable to old unit transformation.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
FIG. 1 is a schematic structural view of a conventional garbage incinerator furnace; and
fig. 2 is a schematic structural diagram of a furnace chamber of a garbage incinerator according to an embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, specific method steps and/or structures are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The front arch of the combustion chamber of the existing incinerator adopts an inclined plane type arch, so that smoke is promoted to flow to the front of the incinerator, and newly-entered garbage is heated and dried by utilizing radiant heat; the rear arch and the ceiling are used for guiding high-temperature flue gas above the fire grate to the front arch area, enhancing radiant heat and convective heat transfer of an ignition area and a combustion area, and mostly adopting long and low inclined arch. For high-moisture and low-calorific-value garbage, a counter-flow combustion chamber is mostly adopted, and a camber arch is often arranged between a rear arch and a hearth ceiling for increasing the radiation heat exchange area and strengthening the flue gas disturbance.
In northern areas, particularly in medium and small cities, the ash content in garbage is high, a large amount of fly ash particles generated during garbage combustion flow along with flue gas, the speed is reduced when high-temperature flue gas flows through a camber arch, the speed is reduced to the lowest when the high-temperature flue gas bypasses the camber arch, at the moment, the ash particles in a viscous molten state are easy to deposit and adhere to a rear arch before being cooled to a solid state, coking is caused, once the coking is started, the speed is increased, and front and rear arch coke blocks are connected together when the coking is serious, so that the normal operation of an incinerator is influenced.
As shown in fig. 2, the utility model provides a novel garbage incinerator furnace 200 that is arranged in the garbage incineration technology, garbage incinerator furnace 200 include counterflow burning chamber 210, and counterflow burning chamber 210 is including burning grate 211, front arch 212, back arch 213, ceiling 214 and the smooth arc connecting portion 215 who connects back arch 213 and ceiling 214. The arc-shaped connection portion 215 includes a large chamfered structure.
In one example, the arc-shaped connection 215 forms an arc having a central angle of no greater than 60 degrees. In one example, the arc-shaped connection 215 forms an arc having a central angle of no greater than 45 degrees.
The utility model discloses with the connected mode between back arch 213 and ceiling 214 change into the structural style of big chamfer by the camber arch, the steel sheet meets with ceiling 214 after bending. When high-temperature flue gas generated after garbage is incinerated on a grate flows to an incinerator outlet along a ceiling 214, the high-temperature flue gas directly flows upwards along a rear arch 213 around a chamfer angle due to no winding arch, the flow velocity of the flue gas is increased when the flue gas flows around the winding arch relatively, the deposition amount of fly ash particles in the flue gas on the rear arch 213 is reduced, and meanwhile, the structural form of a large chamfer angle is beneficial to automatic sliding of a coke block formed at the initial stage, and the coking speed is reduced. After the camber arch is changed into the large chamfer, the width of the outlet of the incinerator is increased, the smoke circulation area is increased, and the retention time of smoke in the incinerator is ensured.
In addition, after the camber arch is removed, the hearth pouring process is simplified, and the pouring cost is saved. Because only the form of the rear arch 213 is changed, the change amount is small, and the method is also suitable for the technical transformation of the running old machine set.
In one example, the incineration grate 211 is located below the front arch 212, the rear arch 213, the ceiling 214. In one example, one end of the incineration grate 211 is connected to the feed port a 'and the other end is connected to the slag drop port b'. Garbage enters the garbage incinerator hearth 200 through the feeding hole a ', is combusted on the incineration grate 211, and combusted slag is discharged out of the incinerator through a slag falling hole b ' of the incineration grate 211 far away from the feeding hole a '.
In one example, the incineration grate 211 extends obliquely downwards from the end close to the feed inlet a 'to the end close to the slag outlet b'.
In one example, the front arch 212 comprises a ramp arch. In one example, the rear arch 213 comprises a ramp arch. In one example, the front and rear arches 212, 213 are spaced apart in opposition, i.e., the planes of the front and rear arches 212, 213 are opposed, and the front and rear arches 212, 213 are spaced apart a predetermined distance to form an outlet for the furnace gases, through which the furnace gases are discharged, with the opening of the outlet facing upward. The furnace flue gas flows out from the outlet after the convection heat exchange is carried out between the ceiling 214 and the incineration grate 211.
In one example, the front arch 212 and the rear arch 213 are disposed at an end near the feed port a.
In one example, the front arch 212 and the rear arch 213 lie in planes that are substantially perpendicular to the plane of the incineration grate 211.
In one example, the ceiling 214 includes a ramp arch. In one example, the plane of the ceiling 214 is substantially parallel to the plane of the incineration grate 211.
In one example, the ceiling 214 is disposed at an end proximate the slag chute b.
The utility model discloses a key point is: the connection mode between the rear arch and the ceiling adopts a structural form of a large chamfer.
The utility model has the advantages that:
1. the coking resistance is good, and the coking current situation when high-ash garbage is combusted is improved.
2. The pouring process is simplified, and the pouring cost is saved.
3. The improvement amount is less, and the method is suitable for technical improvement of old units.
The utility model provides a novel garbage incinerator furnace, garbage incinerator furnace include the counter-flow type combustion chamber, and the counter-flow type combustion chamber encircles the arc connecting portion of ceiling after encircleing after burning grate, preceding arch, back arch, ceiling and level and smooth connection. The arc-shaped connecting part comprises a large chamfer structure.
The utility model discloses with the connected mode between arch and the ceiling behind by the camber change into the structural style of big chamfer, the steel sheet meets with the ceiling after bending. When high-temperature flue gas generated after garbage is incinerated on a grate flows to an incinerator outlet along a ceiling, the high-temperature flue gas directly flows upwards along a rear arch around a chamfer angle due to no winding arch, the flow velocity of the flue gas is increased when flowing around the winding arch oppositely, the deposition amount of fly ash particles in the flue gas on the rear arch is reduced, and meanwhile, the structural form of a large chamfer angle is beneficial to the automatic falling of a coke block formed in the initial stage, and the coking speed is reduced. After the camber arch is changed into the large chamfer, the width of the outlet of the incinerator is increased, the smoke circulation area is increased, and the retention time of smoke in the incinerator is ensured.
In addition, after the camber arch is removed, the hearth pouring process is simplified, and the pouring cost is saved. Because only the form of the rear arch is changed, the change amount is small, and the method is also suitable for the technical transformation of the running old unit.
The utility model provides a novel waste incinerator furnace, this furnace have the anti coking can be good, be convenient for pour and advantages such as installation, both have been applicable to the project of newly-building, also are applicable to old unit transformation.
The utility model discloses a similar replacement or the deformation of individual part or component in the waste incinerator furnace all fall into within the protection scope of the utility model.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A hearth of a garbage incinerator is characterized in that the hearth of the garbage incinerator comprises a counter-flow type combustion chamber,
the counter-flow combustion chamber comprises an incineration grate, a front arch, a rear arch and a ceiling,
the incineration grate is arranged below the front arch, the rear arch and the ceiling, the front arch and the rear arch are opposite and spaced, a hearth flue gas outlet is formed between the front arch and the rear arch, the hearth flue gas flows out from the outlet after the convection heat exchange is carried out between the ceiling and the incineration grate,
wherein the reverse flow combustor further comprises an arc-shaped connecting portion smoothly connecting the rear arch and the ceiling.
2. The waste incinerator hearth according to claim 1, characterized in that the central angle of the arc formed by said arc-shaped connecting portions is not more than 60 degrees.
3. The waste incinerator hearth according to claim 1, characterized in that said incinerator grate is connected to the feed inlet at one end and to the slag drop port at the other end.
4. The waste incinerator hearth according to claim 3, characterized in that said incinerator grate extends obliquely downward from an end near said feed port to an end near said slag discharge port.
5. The waste incinerator hearth of claim 1, wherein said front arch comprises a beveled arch.
6. The waste incinerator hearth of claim 1, wherein said rear arch comprises a beveled arch.
7. The waste incinerator hearth of claim 1, wherein said ceiling comprises a beveled arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920138595.5U CN209926363U (en) | 2019-01-25 | 2019-01-25 | Hearth of garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920138595.5U CN209926363U (en) | 2019-01-25 | 2019-01-25 | Hearth of garbage incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209926363U true CN209926363U (en) | 2020-01-10 |
Family
ID=69067482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920138595.5U Active CN209926363U (en) | 2019-01-25 | 2019-01-25 | Hearth of garbage incinerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209926363U (en) |
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2019
- 2019-01-25 CN CN201920138595.5U patent/CN209926363U/en active Active
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