CN219433762U - Water-cooling secondary combustion chamber for rotary furnace - Google Patents
Water-cooling secondary combustion chamber for rotary furnace Download PDFInfo
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- CN219433762U CN219433762U CN202320009191.2U CN202320009191U CN219433762U CN 219433762 U CN219433762 U CN 219433762U CN 202320009191 U CN202320009191 U CN 202320009191U CN 219433762 U CN219433762 U CN 219433762U
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- combustion chamber
- inner housing
- water
- secondary combustion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model proposes a water-cooled secondary combustion chamber for a rotary kiln, comprising: the combustion chamber comprises a combustion chamber body, refractory mortar and a cooling assembly. The combustion chamber body comprises an inner shell and an outer shell, the outer shell is provided with a cavity, the inner shell is connected with the outer shell and is arranged in the cavity, a cooling cavity is defined between the outer peripheral wall of the inner shell and the inner peripheral wall of the outer shell, the refractory mortar is paved on the outer peripheral wall of the inner shell, the cooling assembly comprises at least one cooling pipeline, the cooling pipeline is arranged on the peripheral wall of the refractory mortar, and cooling liquid is suitable for being introduced into the cooling pipeline so as to cool the refractory mortar. The water-cooling secondary combustion chamber for the rotary furnace has the advantages of small overall weight and good cooling effect.
Description
Technical Field
The utility model relates to the technical field of mechanical rotary combustion equipment, in particular to a water-cooling secondary combustion chamber for a rotary furnace.
Background
The rotary furnace is a complex mechanical rotary combustion device, the secondary combustion chamber (the post combustion chamber) is an important device component, the highest flame of the secondary combustion chamber reaches 1200-1300 ℃, in order to ensure the surface temperature of the secondary combustion chamber, the technical measures adopted in the related art are that the fire clay is additionally arranged on the inner wall surface of the secondary combustion chamber, the thickness is required to be more than 50mm, the fire clay is generally silicate, the density is high, and the secondary combustion chamber has great bearing capacity; in addition, because the process of paving the refractory clay is complex, the site construction environment is blocked, and the construction quality is difficult to ensure, thereby influencing the combustion performance of the rotary furnace.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the utility model provides a water-cooling secondary combustion chamber for a rotary furnace, which has the advantages of small overall weight and good cooling effect.
The water-cooling secondary combustion chamber for the rotary furnace comprises:
the combustion chamber comprises a combustion chamber body, wherein the combustion chamber body comprises an inner shell and an outer shell, the outer shell is provided with a cavity, the inner shell is connected with the outer shell and is arranged in the cavity, and a cooling cavity is defined between the outer peripheral wall of the inner shell and the inner peripheral wall of the outer shell;
the refractory clay is paved on the outer peripheral wall of the inner shell;
the cooling assembly comprises at least one cooling pipeline, wherein the cooling pipeline is arranged on the peripheral wall of the refractory mortar, and cooling liquid is suitable for being introduced into the cooling pipeline so as to cool the refractory mortar.
The water-cooling secondary combustion chamber for the rotary furnace can replace a part of the refractory mortar with the cooling component, so that the consumption of the refractory mortar is reduced, and the overall weight of the combustion chamber body is further reduced.
In addition, can also let in coolant liquid to wanting the cooling pipe of cooling module to the cooling function to the combustion chamber body.
Therefore, the water-cooling secondary combustion chamber for the rotary furnace has the advantages of small overall weight and good cooling effect.
In some embodiments, the plurality of cooling pipes are arranged at intervals along the circumferential direction of the inner housing, and the extending direction of the cooling pipes is consistent with the extending direction of the inner housing.
In some embodiments, the cooling duct is helical, the cooling duct being disposed around the inner housing.
In some embodiments, the cooling duct is one, the inner housing has a first end and a second end in its direction of extension, one end of the cooling duct is adjacent the first end of the inner housing, the other end of the cooling duct is adjacent the second end of the inner housing,
the first end and the second end of the cooling duct are located at different sides in the circumferential direction of the inner housing.
In some embodiments, the plurality of cooling pipes are arranged at intervals along the extending direction of the inner housing, the inner housing has a first end and a second end in the extending direction thereof, one end of at least one cooling pipe of the plurality of cooling pipes is adjacent to the first end of the inner housing, and the other end of at least one cooling pipe of the plurality of cooling pipes is adjacent to the second end of the inner housing.
In some embodiments, the ratio of the pitch of the cooling conduit to the pipe diameter of the cooling conduit is 1 or more and 2 or less.
In some embodiments, the cooling duct has a liquid inlet and a liquid outlet, and the delivery assembly is configured to be coupled to the liquid inlet for introducing a cooling liquid into the cooling duct.
In some embodiments, the delivery assembly includes a delivery pump for connecting to the liquid inlet for introducing the cooling liquid into the cooling conduit through the liquid inlet, the delivery pump being capable of controlling a flow rate of the cooling liquid in the cooling conduit to be greater than or equal to 1m/s and less than or equal to 10m/s.
In some embodiments, a secondary air box is further included for communicating with the inner housing for ventilation into the inner housing.
Drawings
FIG. 1 is a schematic diagram of a water-cooled secondary combustion chamber for a rotary kiln according to an embodiment of the utility model.
Fig. 2 is a schematic cross-sectional view of view A-A of fig. 1.
Reference numerals:
a combustion chamber body 1; an inner housing 11; a first end 111; a second end 112; an outer housing 12; a cavity 13; a cooling chamber 131;
refractory mortar 2;
a cooling assembly 3; a cooling pipe 31; a liquid inlet 32;
and a secondary air box 4.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
As shown in fig. 1 and 2, the water-cooled secondary combustion chamber for a rotary kiln according to an embodiment of the present utility model includes: a combustion chamber body 1, refractory mortar 2 and a cooling assembly 3.
The combustion chamber body 1 includes an inner case 11 and an outer case 12, the outer case 12 having a cavity 13, the inner case 11 being connected to the outer case 12 and disposed in the cavity 13, a cooling chamber 131 being defined between an outer peripheral wall of the inner case 11 and an inner peripheral wall of the outer case 12. The refractory mortar 2 is laid on the outer peripheral wall of the inner casing 11. The cooling assembly 3 comprises at least one cooling duct 32, the cooling duct 32 being provided on the peripheral wall of the refractory mortar 2, and the cooling duct 32 being adapted to be fed with a cooling liquid for cooling the refractory mortar 2.
Specifically, as shown in fig. 1, the outer case 12 is provided in the cavity 13 of the inner case 11, and a portion of the cavity 13 forms a cooling chamber 131, and the cooling chamber 131 is located between the outer peripheral wall of the inner case 11 and the inner peripheral wall of the outer case 12. The refractory mortar 2 can be uniformly laid on the outer peripheral wall of the inner casing 11 to avoid the excessive temperature of the combustion chamber body 1.
It will be appreciated that the cooling duct 32 is provided on the outer peripheral wall of the refractory mortar 2, and that the cooling effect on the circumference of the inner casing 11 can be achieved when the cooling duct 32 is supplied with cooling liquid.
Alternatively, the cooling duct 32 is plural, the extending direction of the cooling duct 32 coincides with the extending direction of the inner housing 11 (up-down direction in fig. 2), and the plural cooling ducts 32 are arranged at intervals along the circumferential direction of the inner housing 11.
It will be appreciated that the extending direction of the inner housing 11 coincides with the extending direction of the combustion chamber body 1, and preferably the cooling duct 32 may be S-shaped, i.e. the extending direction of the cooling duct 32 as a whole coincides with the extending direction of the inner housing 11, and the S-shape of the cooling duct 32 can increase the flow path of the cooling liquid in the cooling duct 32, so as to improve the heat exchange efficiency.
Optionally, the cooling duct 32 is in the form of a spiral, the cooling duct 32 being arranged around the inner housing 11.
Specifically, as shown in fig. 1 and 2, the cooling duct 32 is one, the cooling duct 32 is formed in a spiral shape as a whole, and the cooling duct 32 is fitted to the outer peripheral surface of the inner casing 11, that is, the space profile surrounded by the cooling duct 32 is similar to the outer peripheral profile of the inner casing 11, so that the cooling duct 32 is more closely disposed in the circumferential direction of the refractory mortar 2.
Preferably, the inner case 11 has a first end 111 and a second end 112 in the extending direction thereof, one end of the cooling duct 32 is adjacent to the first end 111 of the inner case 11, the other end of the cooling duct 32 is adjacent to the second end 112 of the inner case 11, and the first end 111 and the second end 112 of the cooling duct 32 are located on different sides in the circumferential direction of the inner case 11.
Specifically, as shown in fig. 2, the upper end of the inner housing 11 is a first end 111, the lower end of the inner housing 11 is a second end 112, the first end 111 of the cooling duct 32 (i.e., the end of the cooling duct 32 located below) is located on the right side of the inner housing 11, and the second end 112 of the cooling duct 32 (i.e., the end of the cooling duct 32 located above) is located on the left side of the inner housing 11.
In other embodiments, the plurality of cooling ducts 32 are provided, the plurality of cooling ducts 32 are spaced apart along the extending direction of the inner housing 11, the inner housing 11 has a first end 111 and a second end 112 along the extending direction thereof, one end of at least one cooling duct 32 of the plurality of cooling ducts 32 (i.e., the liquid inlet 32 end of the cooling duct 32) is adjacent to the first end 111 of the inner housing 11, and the other end of at least one cooling duct 32 of the plurality of cooling ducts 32 (i.e., the liquid outlet end of the cooling duct 32) is adjacent to the second end 112 of the inner housing 11.
It is understood that each of the cooling pipes 32 is spiral, the direction of extension of the cooling pipes 32 substantially coincides with the direction of extension of the inner housing 11, and a plurality of cooling pipes 32 are stacked in the direction of extension of the inner housing 11 so as to be fitted to the outer peripheral surface of the inner housing 11.
It should be noted that the liquid inlet 32 ends of the plurality of cooling pipes 32 may be adjacent to the lower end of the inner housing 11, and the liquid outlet ends of the plurality of cooling pipes 32 may be adjacent to the upper end of the inner housing 11, so as to facilitate introducing cooling liquid into the cooling pipes 32. Wherein the cooling liquid can be water, cooling oil, etc.
That is, the water-cooled secondary combustion chamber for a rotary furnace according to the embodiment of the present utility model can replace a part of the refractory mortar 2 with the cooling assembly 3, so that the amount of the refractory mortar 2 is reduced, and the overall weight of the combustion chamber body 1 is further reduced.
In addition, it is also possible to introduce a cooling liquid into the cooling duct 32 of the cooling module 3 in order to cool down the combustion chamber body 1.
Therefore, the water-cooling secondary combustion chamber for the rotary furnace has the advantages of small overall weight and good cooling effect.
In some embodiments, the ratio of the pitch of the cooling duct 32 to the pipe diameter of the cooling duct 32 is 1 or more and 2 or less.
It will be appreciated that the cooling duct 32 is spiral, and that the ratio of the pitch of the cooling duct 32 to the diameter of the cooling duct 32 is inversely related to the cooling effect of the inner housing 11, i.e. the greater the ratio of the pitch of the cooling duct 32 to the diameter of the cooling duct 32, the greater the density with which the cooling duct 32 is laid, so that the smaller the amount of cooling fluid introduced into the cooling duct 32, the weaker the cooling effect on the inner housing 11.
Furthermore, the selection of the cooling duct 32 is associated with the thickness of the refractory mortar 2, i.e., the thickness of the refractory mortar 2 is increased, so that the pipe diameter of the cooling duct 32 can be reduced or the pitch of the cooling duct 32 can be increased.
In some embodiments, the water-cooled secondary combustion chamber for a rotary kiln according to the embodiments of the present utility model further includes a delivery assembly (not shown) having a liquid inlet 32 and a liquid outlet 32, the delivery assembly being adapted to be coupled to the liquid inlet 32 for introducing a cooling liquid into the cooling conduit 32.
Preferably, the delivery assembly includes a delivery pump for connecting with the liquid inlet 32 so as to introduce the cooling liquid into the cooling pipe 32 through the liquid inlet 32, the delivery pump being capable of controlling the flow rate of the cooling liquid in the cooling pipe 32 to be 1m/s or more and 10m/s or less.
It will be appreciated that the transfer pump has an outlet, which may be connected to the inlet 32 by a conduit so that when the transfer pump is activated, cooling fluid may be transferred into the cooling conduit 32. Preferably, the inlet of the delivery pump can be connected with a soft water tank of a boiler room matched with the combustion chamber body 1, so that water in the soft water tank can be used as cooling liquid, the recycling of the cooling liquid is realized, and the waste of the water is reduced.
In addition, the inventors found that, in the related art, since the flame temperature of the fire side of the combustion chamber body 1 can reach 1200-1300 ℃, if the cooling liquid is water, in the cooling process, the water is easily vaporized in the cooling pipe 32 due to the higher temperature, reducing the heat exchange efficiency, thereby reducing the cooling effect. Therefore, the flow rate of the cooling liquid in the cooling pipeline 32 is controlled to be more than or equal to 1m/s and less than or equal to 10m/s by utilizing the conveying pump so as to prevent the vaporization of water, thereby achieving better heat exchange effect and improving the cooling effect on the combustion chamber body 1.
In some embodiments, the water-cooled secondary combustion chamber for a rotary kiln of the inventive embodiment further comprises a secondary air box 4, the secondary air box 4 being adapted to communicate with the inner housing 11 for ventilation into the inner housing 11.
Specifically, as shown in fig. 1, the overgrate air box 4 may be connected to the inner casing 11 through a duct. It will be appreciated that the inner casing 11 can also have a certain cooling effect when the secondary air box 4 is used to blow air into the inner casing 11.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.
Claims (9)
1. A water cooled secondary combustion chamber for a rotary kiln comprising:
the combustion chamber comprises a combustion chamber body, wherein the combustion chamber body comprises an inner shell and an outer shell, the outer shell is provided with a cavity, the inner shell is connected with the outer shell and is arranged in the cavity, and a cooling cavity is defined between the outer peripheral wall of the inner shell and the inner peripheral wall of the outer shell;
the refractory clay is paved on the outer peripheral wall of the inner shell;
the cooling assembly comprises at least one cooling pipeline, wherein the cooling pipeline is arranged on the peripheral wall of the refractory mortar, and cooling liquid is suitable for being introduced into the cooling pipeline so as to cool the refractory mortar.
2. The water-cooled secondary combustion chamber for a rotary kiln according to claim 1, wherein the number of the cooling pipes is plural, the extending direction of the cooling pipes is identical to the extending direction of the inner housing, and the plural cooling pipes are arranged at intervals along the circumferential direction of the inner housing.
3. The water-cooled secondary combustion chamber for a rotary kiln according to claim 1, characterized in that the cooling duct is in the form of a spiral, which is arranged around the inner housing.
4. A water-cooled secondary combustion chamber for a rotary kiln according to claim 3 wherein the cooling conduit is one, the inner housing has a first end and a second end in its direction of extension, one end of the cooling conduit is adjacent the first end of the inner housing, the other end of the cooling conduit is adjacent the second end of the inner housing,
the first end and the second end of the cooling duct are located at different sides in the circumferential direction of the inner housing.
5. A water cooled secondary combustion chamber for a rotary kiln according to claim 3 wherein the cooling conduits are a plurality, the plurality of cooling conduits being spaced apart along the direction of extension of the inner housing, the inner housing having a first end and a second end in the direction of extension thereof, one end of at least one of the plurality of cooling conduits being adjacent the first end of the inner housing and the other end of at least one of the plurality of cooling conduits being adjacent the second end of the inner housing.
6. A water-cooled secondary combustion chamber for a rotary kiln according to claim 3, wherein the ratio of the pitch of the cooling pipe to the pipe diameter of the cooling pipe is 1 or more and 2 or less.
7. The water cooled two-burner for a rotary kiln according to any of claims 1 to 6, further comprising a delivery assembly, the cooling conduit having a liquid inlet and a liquid outlet, the delivery assembly being adapted to be connected to the liquid inlet for introducing a cooling liquid into the cooling conduit.
8. The water-cooled secondary combustion chamber for a rotary kiln according to claim 7, characterized in that the transport assembly comprises a transport pump for connecting with the liquid inlet so as to introduce the cooling liquid into the cooling pipe through the liquid inlet, the transport pump being capable of controlling the flow rate of the cooling liquid in the cooling pipe to 1m/s or more and 10m/s or less.
9. The water-cooled secondary combustion chamber for a rotary kiln according to any one of claims 1 to 6, further comprising a secondary air box for communicating with the inner housing so as to ventilate into the inner housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320009191.2U CN219433762U (en) | 2023-01-03 | 2023-01-03 | Water-cooling secondary combustion chamber for rotary furnace |
| PCT/CN2023/138014 WO2024125475A1 (en) | 2022-12-12 | 2023-12-12 | Burner, gasification device and waste incineration treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320009191.2U CN219433762U (en) | 2023-01-03 | 2023-01-03 | Water-cooling secondary combustion chamber for rotary furnace |
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| Publication Number | Publication Date |
|---|---|
| CN219433762U true CN219433762U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320009191.2U Active CN219433762U (en) | 2022-12-12 | 2023-01-03 | Water-cooling secondary combustion chamber for rotary furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024125475A1 (en) * | 2022-12-12 | 2024-06-20 | 北京天地融创科技股份有限公司 | Burner, gasification device and waste incineration treatment system |
-
2023
- 2023-01-03 CN CN202320009191.2U patent/CN219433762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024125475A1 (en) * | 2022-12-12 | 2024-06-20 | 北京天地融创科技股份有限公司 | Burner, gasification device and waste incineration treatment system |
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