CN214425957U - Clinker waste heat steam boiler - Google Patents
Clinker waste heat steam boiler Download PDFInfo
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- CN214425957U CN214425957U CN202120551571.XU CN202120551571U CN214425957U CN 214425957 U CN214425957 U CN 214425957U CN 202120551571 U CN202120551571 U CN 202120551571U CN 214425957 U CN214425957 U CN 214425957U
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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 provides a clinker waste heat steam boiler, which is arranged at the upper part of one end of a grate cooler; the boiler includes: the bottom of the hearth is provided with a high-temperature air inlet which is communicated with a discharge hole of the rotary kiln; the inner peripheral surface of the hearth is provided with a water-cooled wall, the inside of the hearth is a heating chamber, and a heat exchange tube is arranged in the heating chamber; the heat exchange tube includes: the inlet end and the outlet end respectively penetrate through the water-cooled wall and extend out of the hearth; the lower part of the water-cooled wall is provided with a water inlet which is connected with a water supply device, the upper part of the water-cooled wall is provided with a steam outlet, the steam outlet is connected with the inlet of a steam drum through a first pipeline, a return pipe of the steam drum is connected with the water supply device, and a steam outlet pipe of the steam drum is connected with the inlet end of the heat exchange pipe; the outlet end of the heat exchange tube is connected with the power generation device through a second pipeline; the method has the beneficial effect of effectively improving the energy utilization rate of the high-temperature air, and is suitable for the field of cement production.
Description
Technical Field
The utility model relates to a cement manufacture's technical field, concretely relates to grog waste heat steam boiler.
Background
The cement production line comprises the processes of preparing raw materials, calcining and cooling clinker, grinding cement and the like; the rotary kiln is used as a clinker calcining device, the processes of preheating, decomposing, chemical reaction and the like of raw materials are completed by releasing heat energy through fuel combustion, so that cement clinker is fired, the calcined clinker needs to be rapidly cooled by a grate cooler, and cooling air is heated into high-temperature air.
The traditional kiln hood cover is an intermediate body for connecting equipment such as a rotary kiln, a grate cooler and a tertiary air pipe, high-temperature clinker in the rotary kiln falls into the grate cooler in the operation process, a large amount of high-temperature combustion-supporting air can be sent into the kiln from the grate cooler, so that the kiln hood cover becomes the intersection of high-temperature air, a large amount of heat is usually contained in the high-temperature flue gas, the high-temperature flue gas is directly discharged, the air is polluted, and the heat is wasted.
At present, in the aspect of waste heat utilization of a rotary kiln, combustion supporting of coal powder is mainly focused when coal powder enters the rotary kiln and a decomposing furnace through secondary and tertiary air pipes, and the problems that a large amount of waste heat is not effectively recovered and the heat utilization rate is low exist.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists in the correlation technique, the utility model discloses the technical problem that will solve lies in: the clinker waste heat steam boiler can effectively improve the energy utilization rate of high-temperature air.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a clinker waste heat steam boiler is arranged at the upper part of one end of a grate cooler; the boiler includes: the bottom of the hearth is provided with a high-temperature air inlet which is communicated with a discharge hole of the rotary kiln; the inner peripheral surface of the hearth is provided with a water-cooled wall, the inside of the hearth is provided with a heating chamber, and a heat exchange tube is arranged in the heating chamber; the heat exchange tube includes: the inlet end and the outlet end respectively penetrate through the water-cooled wall and extend out of the hearth; the lower part of the water-cooled wall is provided with a water inlet which is connected with a water supply device, the upper part of the water-cooled wall is provided with a vapor outlet, the vapor outlet is connected with the inlet of a steam drum through a first pipeline, a return pipe of the steam drum is connected with the water supply device, and a vapor outlet pipe of the steam drum is connected with the inlet end of the heat exchange pipe; and the outlet end of the heat exchange tube is connected with the power generation device through a second pipeline.
Preferably, the outer side of the water-cooled wall is provided with an insulating layer.
Preferably, an air pipe connector is arranged on the boiler, and the boiler is communicated with the tertiary air pipe through the air pipe connector.
Preferably, a hot air pipeline is arranged at the top of the hearth.
Preferably, the heat exchange pipe is a disc type heat-resistant pipe.
Preferably, the surface of the heat exchange tube is provided with a high-temperature resistant material.
The utility model has the advantages of:
1. the utility model relates to a clinker waste heat steam boiler, wherein the boiler is arranged at the upper part of one end of a grate cooler; the boiler includes: the bottom of the hearth is provided with a high-temperature air inlet which is communicated with a discharge hole of the rotary kiln;
when the rotary kiln is used, in the process that the high-temperature clinker falls from a clinker outlet of the rotary kiln to the grate cooler, high-temperature air generated by cooling the high-temperature clinker rises into the boiler, wherein a part of the high-temperature air heats water in a water-cooled wall in a convection heat exchange mode and a radiation heat exchange mode to form a water-vapor mixture, the water-vapor mixture is connected with an inlet of a steam drum through a first pipeline, and after water-vapor separation is completed in the steam drum, formed gas is connected with an inlet end of a heat exchange tube through a steam outlet tube of the steam drum; the separated liquid is connected with a water supply device through a return pipe of the steam drum for cyclic utilization;
in the process of gas circulation in the heat exchange tube, the hot gas of the heat exchange tube is further heated by the high-temperature air of the other part, so that the temperature of the gas is increased again, the heated gas is connected with the power generation device at the outlet end of the heat exchange tube through the second pipeline, the cyclic utilization of high-temperature waste gas is realized, the energy utilization rate of high-temperature flue gas can be effectively improved, the energy conservation and emission reduction are realized, and the practicability is high.
2. The utility model discloses in, water in the water-cooling wall is after the temperature of absorption flue gas, the temperature of the steam mixture of its exit end can reach 280 ~ 300 ℃, introduce 280 ~ 300 ℃ hot steam and go on further heating after the heat exchange tube, make the steam temperature of heat exchange tube exit end reach 350 ~ 400 ℃, among the above-mentioned process, further heating is carried out through the steam to the heat exchange tube, can effectively improve the steam temperature of heat exchange tube exit end, the enthalpy value of steam has been improved, and then the generating capacity has been promoted.
3. The utility model discloses in, through the effective utilization to high-temperature gas in the entering boiler, improved high temperature grog's cooling efficiency for the temperature that gets into the high temperature grog of the cold machine of combing descends, and then has reduced the heat dissipation loss of the cold machine of combing.
4. In this embodiment, the heat preservation that sets up can effectively reduce the heat dissipation loss of boiler, has further improved high temperature air energy utilization and has rateed casing surface temperature and equipment body dead weight simultaneously widely.
Drawings
FIG. 1 is a schematic structural diagram of a clinker waste heat steam boiler of the present invention;
in the figure: 1 is a hearth, 2 is a grate cooler, 3 is a rotary kiln, 4 is a water supply device, 5 is a steam drum, and 6 is a power generation device;
101 is a water-cooled wall, 102 is a heating chamber, 103 is a heat exchange tube, 104 is an insulating layer, 105 is an air pipe connector, and 106 is a hot air pipeline;
501 is a return pipe, 502 is a steam outlet pipe;
1011 is a water inlet and 1012 is a water vapor outlet; 1013 is a first pipeline, 1014 is a second pipeline;
1031 is the inlet end, 1032 is the outlet end.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
An embodiment of the present invention is described in detail below with reference to the accompanying drawings.
Example one
FIG. 1 is a schematic structural diagram of a clinker waste heat steam boiler of the present invention; as shown in figure 1, a clinker waste heat steam boiler is arranged at the upper part of one end of a grate cooler 2; the boiler includes: the rotary kiln comprises a hearth 1, wherein a high-temperature air inlet is formed in the bottom of the hearth 1 and communicated with a discharge hole of a rotary kiln 3;
a water-cooled wall 101 is arranged on the inner circumferential surface of the hearth 1, a heating chamber 102 is arranged inside the hearth 1, and a heat exchange pipe 103 is arranged in the heating chamber 102; the heat exchange pipe 103 includes: an inlet end 1031 and an outlet end 1032, wherein the inlet end 1031 and the outlet end 1032 respectively extend out of the furnace 1 through the water-cooled wall 101;
a water inlet 1011 is formed in the lower part of the water-cooled wall 101, the water inlet 1011 is connected with the water supply device 4, a water vapor outlet 1012 is formed in the upper part of the water-cooled wall 101, the water vapor outlet 1012 is connected with an inlet of the steam drum 5 through a first pipeline 1013, the return pipe 501 of the steam drum 5 is connected with the water supply device 4, and the steam outlet pipe 502 of the steam drum 5 is connected with the inlet end 1031 of the heat exchange pipe 103;
the outlet end 1032 of the heat exchange pipe 103 is connected to the power generation device 6 through a second pipeline 1014.
Specifically, an air pipe connector 105 is arranged on the boiler, and the boiler is communicated with a tertiary air pipe through the air pipe connector 105; in this embodiment, the position of the air duct interface 105 can be set according to actual conditions, such as the front surface of the boiler shown in fig. 1, or can be set at the side surface of the boiler (not shown in the figure).
Further, a hot air duct 106 is arranged at the top of the furnace 1.
In this embodiment, the heat exchange pipe 103 is a disc-type heat-resistant pipe; the surface of the heat exchange tube 103 is provided with a high temperature resistant material.
The utility model relates to a clinker waste heat steam boiler, the boiler is arranged at the upper part of one end of a grate cooler 2; the boiler includes: the rotary kiln comprises a hearth 1, wherein a flue gas inlet is formed in the bottom of the hearth 1, and a high-temperature air inlet is communicated with a discharge hole of a rotary kiln 3;
when the rotary kiln is used, in the process that the high-temperature clinker falls from the clinker outlet of the rotary kiln to the grate cooler, high-temperature air generated by cooling the high-temperature clinker rises into the boiler, wherein a part of the high-temperature air heats water in the water-cooled wall 101 in a convection heat exchange and radiation heat exchange mode to form a water-vapor mixture, the water-vapor mixture is connected with the inlet of the steam pocket 5 through the first pipeline 1013, and after water-vapor separation in the steam pocket 5 is completed, formed gas is connected with the inlet 1031 of the heat exchange tube 103 through the steam outlet tube 502 of the steam pocket 5; the separated liquid is connected with the water supply device 4 through a return pipe 501 of the steam drum 5 for recycling;
in the process of gas circulation in the heat exchange tube 103, the hot gas in the heat exchange tube 103 is further heated by the other part of high-temperature air, so that the temperature of the gas is raised again, and the raised gas is connected with the power generation device 6 at the outlet end 1032 of the heat exchange tube 103 through the second pipeline 1014, so that the cyclic utilization of the high-temperature air is realized, the energy utilization rate of high-temperature flue gas can be effectively improved, the energy conservation and emission reduction are realized, and the practicability is high.
Furthermore, the utility model discloses in, water in the water-cooling wall 101 is after the temperature of absorption high temperature air, the temperature of the steam mixture of its exit end can reach 280 ~ 300 ℃, introduce 280 ~ 300 ℃ hot steam and go on further heating after the heat exchange tube 103, make the steam temperature of heat exchange tube 103 exit end reach 350 ~ 400 ℃, among the above-mentioned process, further heating is carried out through the steam to heat exchange tube 103, can effectively improve the steam temperature of heat exchange tube 103 exit end, the enthalpy value of steam has been improved, and then the generating capacity has been promoted.
Furthermore, the utility model discloses in, through the effective utilization to high-temperature gas in the entering boiler, improved high-temperature grog's cooling efficiency for the temperature of the high-temperature grog that gets into the cold machine of comb descends, and then has reduced the heat radiation loss of the cold machine of comb.
Example two
On the basis of the first embodiment, the clinker waste heat steam boiler is characterized in that an insulating layer 104 is arranged on the outer side of the water-cooled wall 101.
In this embodiment, the heat preservation that sets up can effectively reduce the heat dissipation loss of boiler, has further improved high temperature air energy utilization.
To sum up, the utility model discloses in, through replacing original kiln hood cover with the boiler for the boiler can heat the water in the water-cooling wall, and separate the steam and water mixture after the heating, make the gas that forms get into further heating in the heat exchange tube, effectively improved the temperature of gas in the heat exchange tube, realized the utilization ratio of high temperature grog waste gas, can promote the generating capacity simultaneously, reduced the heat dissipation loss of kiln hood casing, reduced the dead weight of equipment body, the practicality is strong.
In the description of the present invention, it should be understood that the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. A clinker waste heat steam boiler is characterized in that: the boiler is arranged at the upper part of one end of the grate cooler (2); the boiler includes: the rotary kiln comprises a hearth (1), wherein a high-temperature air inlet is formed in the bottom of the hearth (1) and communicated with a discharge hole of a rotary kiln (3);
a water-cooled wall (101) is arranged on the inner circumferential surface of the hearth (1), a heating chamber (102) is arranged inside the hearth (1), and a heat exchange pipe (103) is arranged in the heating chamber (102); the heat exchange pipe (103) includes: an inlet end (1031) and an outlet end (1032), wherein the inlet end (1031) and the outlet end (1032) respectively penetrate through the water wall (101) and extend out of the hearth (1);
a water inlet (1011) is formed in the lower portion of the water-cooled wall (101), the water inlet (1011) is connected with a water supply device (4), a water vapor outlet (1012) is formed in the upper portion of the water-cooled wall (101), the water vapor outlet (1012) is connected with an inlet of a steam drum (5) through a first pipeline (1013), a return pipe (501) of the steam drum (5) is connected with the water supply device (4), and a steam outlet pipe (502) of the steam drum (5) is connected with an inlet end (1031) of a heat exchange pipe (103);
the outlet end (1032) of the heat exchange pipe (103) is connected with the power generation device (6) through a second pipeline (1014).
2. A clinker waste heat steam boiler as claimed in claim 1, wherein: and an insulating layer (104) is arranged on the outer side of the water-cooled wall (101).
3. A clinker waste heat steam boiler as claimed in claim 1, wherein: an air pipe connector (105) is arranged on the boiler, and the boiler is communicated with a tertiary air pipe through the air pipe connector (105).
4. A clinker waste heat steam boiler as claimed in claim 1, wherein: the top of the hearth (1) is provided with a hot air pipeline (106).
5. A clinker waste heat steam boiler as claimed in claim 1, wherein: the heat exchange pipe (103) is a disc type heat-resistant pipe.
6. A clinker waste heat steam boiler as claimed in claim 1, wherein: the surface of the heat exchange tube (103) is provided with a high-temperature resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120551571.XU CN214425957U (en) | 2021-03-17 | 2021-03-17 | Clinker waste heat steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120551571.XU CN214425957U (en) | 2021-03-17 | 2021-03-17 | Clinker waste heat steam boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214425957U true CN214425957U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120551571.XU Active CN214425957U (en) | 2021-03-17 | 2021-03-17 | Clinker waste heat steam boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214425957U (en) |
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2021
- 2021-03-17 CN CN202120551571.XU patent/CN214425957U/en active Active
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