CN220267791U - Sintering waste heat stepped utilization power generation system - Google Patents
Sintering waste heat stepped utilization power generation system Download PDFInfo
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- CN220267791U CN220267791U CN202321694464.8U CN202321694464U CN220267791U CN 220267791 U CN220267791 U CN 220267791U CN 202321694464 U CN202321694464 U CN 202321694464U CN 220267791 U CN220267791 U CN 220267791U
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- collecting hood
- gas
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- 239000002918 waste heat Substances 0.000 title claims abstract description 51
- 238000005245 sintering Methods 0.000 title claims abstract description 33
- 238000010248 power generation Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 80
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010812 mixed waste Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a sintering waste heat stepped utilization power generation system, which comprises a sintering machine, a circular cooler, a reheater, a waste heat boiler and a steam turbine, wherein the sintering machine is connected with the circular cooler; the circular cooler comprises a first gas collecting hood, a second gas collecting hood, a third gas collecting hood and a fourth gas collecting hood which are sequentially arranged along the advancing direction of materials, an output port of the second gas collecting hood is communicated with an exhaust gas inlet of a waste heat boiler through a third pipeline, one end, close to the exhaust gas inlet of the waste heat boiler, of the third pipeline is provided with a temperature detection device, an emergency exhaust pipe communicated with the third pipeline is arranged beside one end, far away from the waste heat boiler, of the temperature detection device, and the emergency exhaust pipe is sequentially provided with an exhaust valve and a dust removal device along the exhausting direction. When the temperature detection device detects that the temperature is too high, the exhaust valve is started to exhaust through the emergency exhaust pipe, the exhaust-heat boiler is started to protect, and the exhaust of the emergency exhaust pipe is discharged through the dust removing device, so that exhaust gas is prevented from polluting air.
Description
Technical Field
The utility model relates to the technology in the field of sintering waste heat power generation, in particular to a sintering waste heat stepped utilization power generation system.
Background
In recent years, while ensuring the quality of sinter, the iron and steel industry is continuously paying attention to and paying attention to the application and development of sintering energy-saving technology, and at present, in the process of utilizing sintering waste heat resources, a ring cooler waste heat utilization system technology is generally adopted to realize recycling of the sintering waste heat.
In the prior art, a sintering waste heat power generation system for steam reheating exists, a circular cooler comprises a high-temperature section hot waste gas collecting cover, a middle-temperature section hot waste gas collecting cover and a low-temperature section hot waste gas collecting cover, wherein the temperature section hot waste gas collecting cover is directly connected with a waste gas inlet of a waste heat boiler through a pipeline, waste gas output by the temperature section hot waste gas collecting cover is 300 ℃ generally, the temperature range of the waste heat boiler for taking hot gas is basically fixed in actual use, when the sintering temperature fluctuates, the temperature of the hot waste gas of the high-temperature section hot waste gas collecting cover and the temperature of the hot waste gas of the middle-temperature section hot waste gas collecting cover also fluctuates, and the temperature fluctuation of the waste gas inlet of the waste heat boiler is easy to deviate from the temperature range of the waste heat boiler due to the fact that the middle-temperature section hot waste gas collecting cover is directly connected with the waste heat boiler, so that the normal work of the waste heat boiler is affected.
Therefore, a new solution is needed to solve the above problems.
Disclosure of Invention
In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its main objective is to provide a sintering waste heat stepped utilization power generation system, wherein an output port of a second gas collecting hood is communicated with an exhaust gas inlet of a waste heat boiler through a third pipeline, and a temperature detection device is arranged at one end of the third pipeline, which is close to the exhaust gas inlet of the waste heat boiler, and when the temperature detection device detects that the temperature is too high, an exhaust valve is started to exhaust through an emergency exhaust pipe, so that the temperature at the exhaust gas inlet of the waste heat boiler is prevented from being too high, a protection effect is started to the waste heat boiler, and the exhaust gas of the emergency exhaust pipe is discharged through a dust removal device, so that the exhaust gas discharged is prevented from polluting the air; and the output port of the third gas-collecting hood is communicated with the sintering machine through a fourth pipeline, the output port of the fourth gas-collecting hood is communicated with the input port of the third gas-collecting hood through a fifth pipeline, and low-temperature waste gas is reasonably utilized, so that the structure is ingenious.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the sintering waste heat stepped utilization power generation system comprises a sintering machine, a circular cooler, a reheater, a waste heat boiler and a steam turbine, wherein a material output port of the sintering machine is connected with an input end of the circular cooler, the steam turbine comprises a high-pressure cylinder and a low-pressure cylinder, the waste heat boiler comprises a high-pressure steam outlet and a low-pressure steam outlet, and the high-pressure steam outlet is connected with the high-pressure cylinder through a first pipeline;
the annular cooler comprises a first gas collecting hood, a second gas collecting hood, a third gas collecting hood and a fourth gas collecting hood which are sequentially arranged along the advancing direction of materials, an exhaust gas input port of the reheater is communicated with an output port of the first gas collecting hood, and an exhaust gas output port of the reheater is communicated with an exhaust gas inlet of the waste heat boiler through a second pipeline;
the outlet of the second gas collecting hood is communicated with the exhaust gas inlet of the exhaust-heat boiler through a third pipeline, one end, close to the exhaust gas inlet of the exhaust-heat boiler, of the third pipeline is provided with a temperature detection device, an emergency exhaust pipe communicated with the third pipeline is arranged beside one end, far away from the exhaust-heat boiler, of the temperature detection device, the exhaust gas inlet of the exhaust-heat boiler is prevented from being too high, the exhaust-heat boiler is prevented from being started to be protected, the emergency exhaust pipe is sequentially provided with an exhaust valve and a dust removal device along the exhaust direction, the exhaust gas of the emergency exhaust pipe is discharged through the dust removal device, and the discharged exhaust gas is prevented from polluting the air;
the output port of the third gas-collecting hood is communicated with the sintering machine through a fourth pipeline, the output port of the fourth gas-collecting hood is communicated with the input port of the third gas-collecting hood through a fifth pipeline, the input port of the fourth gas-collecting hood is connected with an air pipeline, and the air pipeline is provided with a blower, so that low-temperature waste gas is reasonably utilized, and the structure is ingenious;
the exhaust port of the waste heat boiler is respectively communicated with the input ports of the first gas collecting hood and the second gas collecting hood through a sixth pipeline, and a circulating fan is arranged on the sixth pipeline.
As a preferable scheme, the low-pressure steam outlet and the steam outlet of the high-pressure cylinder are communicated with the steam inlet of the reheater through a seventh pipeline, the steam outlet of the reheater is communicated with the low-pressure cylinder through an eighth pipeline, and the low-pressure steam output by the steam mixed waste heat boiler output by the high-pressure cylinder is reheated by the reheater and then is used by the low-pressure cylinder, so that the step-type utilization of waste heat is realized, and the design is ingenious.
As a preferred scheme, the output end of the steam turbine is connected with a generator.
As a preferred scheme, the steam outlet of the low-pressure cylinder is connected with a condenser, the water outlet of the condenser is connected with a deaerator, the water outlet of the deaerator is connected with a waste heat boiler through a water supply pipeline, the steam exhausted by the low-pressure cylinder is reasonably utilized, and water is supplied to the waste heat boiler, so that the structure design is ingenious.
As a preferable scheme, the water supply pipeline is provided with a water supply pump.
As a preferable scheme, the condenser is connected with a cooling tower through a circulating water pump.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, and in particular, the technical scheme can be as follows:
the exhaust gas outlet of the second gas collecting hood is communicated with an exhaust gas inlet of the exhaust-heat boiler through a third pipeline, a temperature detection device is arranged at one end, close to the exhaust gas inlet of the exhaust-heat boiler, of the third pipeline, when the temperature detection device detects that the temperature is too high, an exhaust valve is started to exhaust through an emergency exhaust pipe, the temperature at the exhaust gas inlet of the exhaust-heat boiler is prevented from being too high, the exhaust gas of the emergency exhaust pipe is prevented from being discharged through a dust removal device, and the discharged exhaust gas is prevented from polluting the air; and the output port of the third gas-collecting hood is communicated with the sintering machine through a fourth pipeline, the output port of the fourth gas-collecting hood is communicated with the input port of the third gas-collecting hood through a fifth pipeline, and low-temperature waste gas is reasonably utilized, so that the structure is ingenious.
In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of the structure of a preferred embodiment of the present utility model;
FIG. 2 is a control schematic diagram of a temperature detecting device according to a preferred embodiment of the utility model.
The attached drawings are used for identifying and describing:
10. sintering machine 20 and circular cooler
21. First gas-collecting channel 22, second gas-collecting channel
221. Third pipeline 23 and third gas-collecting channel
231. Fourth pipeline 24 and fourth gas-collecting channel
241. Fifth pipe 242, air pipe
2421. Blower fan
30. Reheater 31, second pipe
32. Eighth pipeline 40, steam turbine
41. High pressure cylinder 42, low pressure cylinder
50. Waste heat boiler 51, high pressure steam outlet
511. First pipe 52, low pressure steam outlet
521. Seventh pipe 53, sixth pipe
531. Circulation fan 60, generator
70. Temperature detection device 80 and emergency exhaust pipe
81. Exhaust valve 82 and dust removing device
90. Condenser 91 and deaerator
92. Water supply pipeline 921 and water supply pump
93. Circulating water pump 94 and cooling tower
100. And a control system.
Detailed Description
First, it should be noted that, in the description of the present utility model, the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Referring to fig. 1 to 2, specific structures of a preferred embodiment of the present utility model are shown, including a sintering machine 10, a circular cooler 20, a reheater 30, a steam turbine 40, a waste heat boiler 50 and a generator 60.
The material output port of the sintering machine 10 is connected with the input end of the circular cooler 20.
The circular cooler 20 comprises a first gas-collecting hood 21, a second gas-collecting hood 22, a third gas-collecting hood 23 and a fourth gas-collecting hood 24 which are sequentially arranged along the advancing direction of materials; the output port of the first gas collecting hood 21 is communicated with the exhaust gas input port of the reheater 30, and the exhaust gas output port of the reheater 30 is communicated with the exhaust gas inlet of the waste heat boiler 50 through a second pipeline 31;
the output port of the second gas-collecting hood 22 is communicated with the exhaust gas inlet of the exhaust-heat boiler 50 through a third pipeline 221, one end of the third pipeline 221, which is close to the exhaust gas inlet of the exhaust-heat boiler 50, is provided with a temperature detection device 70, an emergency exhaust pipe 80 communicated with the third pipeline 221 is arranged beside one end of the temperature detection device 70, which is far away from the exhaust-heat boiler 50, so that the temperature at the exhaust gas inlet of the exhaust-heat boiler 50 is prevented from being too high, a protection effect is started on the exhaust-heat boiler 50, the emergency exhaust pipe 80 is sequentially provided with an exhaust valve 81 and a dust removal device 82 along the exhaust direction, the exhaust gas of the emergency exhaust pipe 80 is discharged through the dust removal device 82, and the discharged exhaust gas is prevented from polluting the air; wherein, the exhaust valve 81, the dust removing device 82 and the temperature detecting device 70 are all electrically connected to the control system 100, and the control system 100 controls the start of the exhaust valve 81 and the dust removing device 82 according to the high temperature signal of the temperature detecting device 70;
the output port of the third gas-collecting channel 23 is communicated with the sintering machine 10 through a fourth pipeline 231, the output port of the fourth gas-collecting channel 24 is communicated with the input port of the third gas-collecting channel 23 through a fifth pipeline 241, the input port of the fourth gas-collecting channel 24 is connected with an air pipeline 242, and the air pipeline 242 is provided with a blower 2421 to reasonably utilize low-temperature waste gas and has a smart structure.
The steam turbine 40 comprises a high-pressure cylinder 41 and a low-pressure cylinder 42, the waste heat boiler 50 comprises a high-pressure steam outlet 51 and a low-pressure steam outlet 52, the high-pressure steam outlet 51 is connected with the high-pressure cylinder 41 through a first pipeline 511, an exhaust port of the waste heat boiler 50 is respectively communicated with input ports of the first gas collecting hood 21 and the second gas collecting hood 22 through a sixth pipeline 53, and a circulating fan 531 is arranged on the sixth pipeline 53;
specifically, the low-pressure steam outlet 52 is connected to the steam inlet of the reheater 30 together with the steam outlet of the high-pressure cylinder 41 through a seventh pipe 521, the steam outlet of the reheater 30 is connected to the low-pressure cylinder 42 through an eighth pipe 32, and the low-pressure steam output from the steam mixed waste heat boiler 50 output from the high-pressure cylinder 41 is reheated by the reheater 30 and then supplied to the low-pressure cylinder 42, so that the waste heat is utilized in a stepwise manner, and the design is ingenious;
preferably, the steam outlet of the low pressure cylinder 42 is connected with a condenser 90, the water outlet of the condenser 90 is connected with a deaerator 91, the water outlet of the deaerator 91 is connected with the waste heat boiler 50 through a water supply pipeline 92, the steam discharged by the low pressure cylinder 42 is reasonably utilized, water is supplied to the waste heat boiler 50, and the structural design is ingenious; a water supply pump 921 is arranged on the water supply pipeline 92; the condenser 90 is connected to a cooling tower 94 through a circulating water pump 93.
The generator 60 is connected to the output of the turbine 40.
The temperature of the exhaust gas output by the first gas collecting hood 21 is usually 400 degrees, the temperature of the exhaust gas output by the second gas collecting hood 22 is usually 300 degrees, the temperature of the exhaust gas output by the third gas collecting hood 23 is 150-200 degrees, the temperature of the exhaust gas output by the fourth gas collecting hood 24 is usually 100 degrees, and the exhaust gas output by the fourth gas collecting hood 24 and air can be directly used as cooling air to be blown to the third gas collecting hood 23, so that the utilization is ingenious.
The design focus of the utility model is that:
the exhaust gas outlet of the second gas collecting hood is communicated with an exhaust gas inlet of the exhaust-heat boiler through a third pipeline, a temperature detection device is arranged at one end, close to the exhaust gas inlet of the exhaust-heat boiler, of the third pipeline, when the temperature detection device detects that the temperature is too high, an exhaust valve is started to exhaust through an emergency exhaust pipe, the temperature at the exhaust gas inlet of the exhaust-heat boiler is prevented from being too high, the exhaust gas of the emergency exhaust pipe is prevented from being discharged through a dust removal device, and the discharged exhaust gas is prevented from polluting the air; and the output port of the third gas-collecting hood is communicated with the sintering machine through a fourth pipeline, the output port of the fourth gas-collecting hood is communicated with the input port of the third gas-collecting hood through a fifth pipeline, and low-temperature waste gas is reasonably utilized, so that the structure is ingenious.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.
Claims (6)
1. The sintering waste heat stepped utilization power generation system comprises a sintering machine, a circular cooler, a reheater, a waste heat boiler and a steam turbine, wherein a material output port of the sintering machine is connected with an input end of the circular cooler, the steam turbine comprises a high-pressure cylinder and a low-pressure cylinder, the waste heat boiler comprises a high-pressure steam outlet and a low-pressure steam outlet, and the high-pressure steam outlet is connected with the high-pressure cylinder through a first pipeline; the method is characterized in that:
the annular cooler comprises a first gas collecting hood, a second gas collecting hood, a third gas collecting hood and a fourth gas collecting hood which are sequentially arranged along the advancing direction of materials, an exhaust gas input port of the reheater is communicated with an output port of the first gas collecting hood, and an exhaust gas output port of the reheater is communicated with an exhaust gas inlet of the waste heat boiler through a second pipeline;
the outlet of the second gas collecting hood is communicated with the exhaust gas inlet of the exhaust-heat boiler through a third pipeline, one end, close to the exhaust gas inlet of the exhaust-heat boiler, of the third pipeline is provided with a temperature detection device, the side, far away from one end of the exhaust-heat boiler, of the temperature detection device is provided with an emergency exhaust pipe communicated with the third pipeline, and the emergency exhaust pipe is sequentially provided with an exhaust valve and a dust removal device along the exhaust direction;
the output port of the third gas-collecting hood is communicated with the sintering machine through a fourth pipeline, the output port of the fourth gas-collecting hood is communicated with the input port of the third gas-collecting hood through a fifth pipeline, the input port of the fourth gas-collecting hood is connected with an air pipeline, and the air pipeline is provided with a blower;
the exhaust port of the waste heat boiler is respectively communicated with the input ports of the first gas collecting hood and the second gas collecting hood through a sixth pipeline, and a circulating fan is arranged on the sixth pipeline.
2. The sintering waste heat stepped utilization power generation system according to claim 1, wherein: the low-pressure steam outlet and the steam outlet of the high-pressure cylinder are communicated with the steam inlet of the reheater through a seventh pipeline, and the steam outlet of the reheater is communicated with the low-pressure cylinder through an eighth pipeline.
3. The sintering waste heat stepped utilization power generation system according to claim 1, wherein: and the output end of the steam turbine is connected with a generator.
4. The sintering waste heat stepped utilization power generation system according to claim 1, wherein: the steam outlet of the low-pressure cylinder is connected with a condenser, the water outlet of the condenser is connected with a deaerator, and the water outlet of the deaerator is connected with a waste heat boiler through a water supply pipeline.
5. The sintering waste heat stepped utilization power generation system according to claim 4, wherein: and a water supply pump is arranged on the water supply pipeline.
6. The sintering waste heat stepped utilization power generation system according to claim 4, wherein: the condenser is connected with a cooling tower through a circulating water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321694464.8U CN220267791U (en) | 2023-06-30 | 2023-06-30 | Sintering waste heat stepped utilization power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321694464.8U CN220267791U (en) | 2023-06-30 | 2023-06-30 | Sintering waste heat stepped utilization power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220267791U true CN220267791U (en) | 2023-12-29 |
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ID=89316592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321694464.8U Active CN220267791U (en) | 2023-06-30 | 2023-06-30 | Sintering waste heat stepped utilization power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220267791U (en) |
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2023
- 2023-06-30 CN CN202321694464.8U patent/CN220267791U/en active Active
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