CN220583122U - Metallurgical high-temperature slag waste heat boiler - Google Patents
Metallurgical high-temperature slag waste heat boiler Download PDFInfo
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- CN220583122U CN220583122U CN202320105295.3U CN202320105295U CN220583122U CN 220583122 U CN220583122 U CN 220583122U CN 202320105295 U CN202320105295 U CN 202320105295U CN 220583122 U CN220583122 U CN 220583122U
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- 239000002893 slag Substances 0.000 title claims abstract description 43
- 239000002918 waste heat Substances 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000010248 power generation Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 229920006395 saturated elastomer Polymers 0.000 abstract description 4
- 239000005431 greenhouse gas Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000003915 air pollution Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000009467 reduction Effects 0.000 description 7
- 238000004134 energy conservation Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a metallurgical high-temperature slag waste heat boiler, and belongs to the technical field of waste heat recovery. The boiler water supply is input into the water inlet header, the water enters the primary economizer through the water inlet header, the water in the primary economizer enters the water outlet header, the water in the water outlet header enters the secondary economizer, the hot water in the secondary economizer enters the steam drum, the hot water in the steam drum enters the evaporator, the hot water becomes steam-water mixture in the evaporator, the steam-water mixture enters the steam drum, the steam-water mixture is subjected to steam-water separation in the steam drum, and the separated saturated steam is sent to the superheater to generate superheated steam and enters the power generation system. The utility model utilizes intermittent waste heat of high-temperature slag, has high waste heat recovery efficiency, does not need to supplement fuel, solves the problem of greenhouse gas emission, increases the self-power generation of enterprises, saves energy, reduces air pollution, meets the sustainable development requirement, and has obvious economic benefit.
Description
Technical Field
The utility model relates to a metallurgical high-temperature slag waste heat boiler, and belongs to the technical field of waste heat boilers.
Background
In order to prevent the adverse effect of excessive carbon emission on global climate, the national society in the eighteen and five-way of 2015 proposes to implement the action of 'double control' of the total energy consumption and the intensity, and the 75 th united nationality in 2020 proposes the carbon peak before 2030 and the carbon neutralization target before 2060. The steel industry is a large consumer in the industrial field and is one of the industries with the greatest energy saving and emission reduction potential in China. The iron and steel industry becomes the key and difficult field of energy conservation and emission reduction in the whole society, and if the iron and steel industry achieves the effect of energy conservation and emission reduction, the iron and steel industry also makes great contribution to energy conservation and emission reduction in the whole society. The initiative of the energy revolution is mastered, and the development of energy-saving technology and the application of waste heat recovery technology become industry consensus.
The country has issued "standard conditions for production and operation in the iron and steel industry", and has made specific demands on the aspects of environmental protection, energy consumption, resource recycling, process equipment and the like of iron and steel enterprises. It is explicitly proposed that enterprises which do not have standard conditions need to be modified according to the standard conditions, and enterprises which still cannot meet the requirements after modification need to gradually exit steel production.
National environmental protection regulations are stricter, and energy conservation and emission reduction tasks are harder. In the important development direction of the steel industry, the content related to energy conservation and emission reduction occupies most of the fields.
At present, the recovery utilization rate of the waste heat and residual energy in the iron and steel industry is quite low, if the waste heat is reasonably utilized, the waste heat is utilized for heating or generating electricity through effectively recovering the heat loss in production, so that the energy sources can be saved, the running cost is reduced, the enterprise benefit is improved, the environment is protected, and the heat pollution is reduced.
The temperature of the high temperature slag was 1700 ℃. The current state is that the heat of the high-temperature slag is not utilized at all, so that the emission of greenhouse gases and a great amount of energy waste are caused. Aiming at the situation that intermittent waste heat cannot be applied to power generation, the waste heat boiler for power generation by the developed intermittent waste heat makes up the blank of the waste heat boiler.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and further provides a metallurgical high-temperature slag waste heat boiler.
The utility model aims at realizing the following technical scheme:
a metallurgical high-temperature slag waste heat boiler comprises a steam drum, a high Wen Chucang, a superheater, a medium-temperature storage bin, an evaporator, a low-temperature storage bin, a secondary economizer, a hot water tank, a primary economizer, a water inlet header, a water outlet header, a heat conducting medium inlet header, a heat exchange platform, a normal-pressure heat exchange device and a heat conducting medium outlet header,
the boiler water supply is connected to the input of the water inlet header, the three output of the water inlet header are connected to the inlets of the primary economizers in the three hot water tanks respectively, the outlets of the primary economizers in the three hot water tanks are connected to the three input of the water outlet header respectively, the output of the water outlet header is connected to the inlets of the secondary economizers in the low-temperature storage bin, the outlet of the secondary economizers in the low-temperature storage bin is connected to the water supply port of the steam drum, the water outlet of the steam drum is connected to the inlet of the evaporator in the medium-temperature storage bin, the outlet of the evaporator in the medium-temperature storage bin is connected to the steam inlet of the steam drum, the outlet of the steam drum is connected to the inlet of the superheater in the high Wen Chucang, the outlet of the superheater in the high Wen Chucang is connected to the power generation system, the outlets of the high Wen Chucang, the medium-temperature storage bin and the low-temperature storage bin are connected to the input of the heat medium outlet header, the output of the heat transfer medium outlet header is connected to the inlet of the heat transfer platform and the inlet of the normal pressure heat transfer device, the outlet of the heat transfer platform is connected to the input of the slag medium outlet header, the output header is connected to the output 62 of the heat transfer medium outlet header, and the slag medium is placed on the high-temperature storage bin and the normal pressure heat transfer device.
The utility model relates to a metallurgical high-temperature slag waste heat boiler, wherein heating surface pipes of a superheater, a primary economizer and a secondary economizer are provided with tooth-opening type fin pipes.
The utility model relates to a metallurgical high-temperature slag waste heat boiler, wherein a heating surface pipe of an evaporator adopts a spiral fin pipe or an H-shaped fin pipe.
The utility model relates to a metallurgical high-temperature slag waste heat boiler, wherein the normal-pressure heat exchange device is a square normal-pressure heat exchange container.
The utility model relates to a metallurgical high-temperature slag waste heat boiler, the temperature of a high-temperature storage bin is 330-380 ℃, the temperature of a medium-temperature storage bin is 330-210 ℃, and the temperature of a low-temperature storage bin is 210-150 ℃.
The metallurgical high-temperature slag waste heat boiler disclosed by the utility model has the advantages that the utilized resources are intermittent waste heat of high-temperature slag, the waste heat recovery efficiency is high, the supplementation of fuel is not needed, the emission of greenhouse gases is solved, the self-electricity-generating capacity of enterprises is increased, the energy is saved, the atmospheric pollution is reduced, the scheme accords with the national industrial policy, the metallurgical high-temperature slag waste heat boiler is environment-friendly, the energy is saved, the carbon emission is reduced, the sustainable development requirement is met, the economic benefit is very remarkable, and the national requirements on energy conservation and emission reduction of the steel industry are met.
Drawings
FIG. 1 is a schematic diagram of a metallurgical high temperature slag waste heat boiler according to the present utility model.
Reference numerals in the drawings: 1 is a steam drum; 2 is high Wen Chucang; 3 is a superheater; 4 is a medium-temperature storage bin; 5 is an evaporator; 6 is low Wen Chucang; 7 is a secondary economizer; 8 is a hot water tank; 9 is a primary economizer; 10 is a water inlet header; 11 is a water outlet header; 12 is a heat-conducting medium inlet header; 13 is a heat exchange platform; 14 is a normal pressure heat exchange device; 15 is a heat-conducting medium outlet header; 16 is high temperature slag.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present utility model, and a detailed implementation is given, but the scope of protection of the present utility model is not limited to the following embodiments.
Embodiment one: as shown in fig. 1, a metallurgical high-temperature slag waste heat boiler according to the present embodiment includes:
the medium flow comprises the following steps:
the flow of water in the waste heat boiler is as follows:
boiler feed water is input into a water inlet header 10, enters a primary economizer 9 through the water inlet header 10, water in the primary economizer 9 enters a water outlet header 11, water in the water outlet header 11 enters a secondary economizer 7, hot water in the secondary economizer 7 enters a steam drum 1, hot water in the steam drum 1 enters an evaporator 5, hot water becomes steam-water mixture in the evaporator 5, the steam-water mixture enters the steam drum 1, and after the steam-water mixture is separated in the steam drum 1, the separated saturated steam is sent to a superheater 3 to generate superheated steam to enter a power generation system.
The flow of the heat conducting medium is as follows:
the high-temperature slag 16 is conveyed to the heat exchange platform 13, the normal pressure heat conduction device 14 is placed on the high-temperature slag 16, the heat conduction medium in the normal pressure heat conduction device 14 extracts high-temperature heat and then is sent to the high-temperature storage tank 2 for storage, and saturated steam in the superheater 3 is added into the high-temperature storage tank 2 by the heat conduction medium. When the slag temperature is reduced and the requirement of the high-temperature storage tank 2 cannot be met, the heat conducting medium in the normal pressure heat exchange device 14 extracts the medium-temperature heat and then sends the medium-temperature heat to the medium-temperature storage tank 4 for storage, and the heat conducting medium heats water into saturated steam in the medium-temperature storage tank 4. With the extraction of heat, the temperature of the slag is further reduced, and when the temperature cannot meet the requirement of the medium-temperature storage tank 4, the heat extracted by the heat conducting medium in the normal-pressure heat exchange device 14 is sent into the low-temperature storage tank 6, and the heat conducting medium heats the water in the secondary economizer 7 in the low-temperature storage tank 6. When the temperature of the slag reaches below 280 ℃, the slag is put into a hot water tank 8, and water in a primary economizer 9 is heated. And (3) introducing water in the pond into other ponds until the temperature of the slag reaches 60 ℃, and carrying away the slag after the water is dried.
Benefit analysis
a) Calculation of waste heat recovery power generation amount of slag
The following parameters are calculated
The temperature of the slag is 1500 DEG C
Daily output of 2575t/d
The heat released by the slag at 1500-150 deg.c (specific heat of slag at 1500 deg.c is 0.71 and specific heat of slag at 150 deg.c is 0.488)
Q＝0.71*2575*1000*1500-0.488*2575*1000*150＝2.55*109KJ
P=1.6mpa t=330 ℃ 185 DEG electricity generation per ton of superheated steam
Superheated steam enthalpy i=3100 KJ/Kg
Slag generated 2.55 x 109KJ/3100 KJ/kg= 823.8t/d
823 x 185=1.5 x 105 degree electric/d
b) The daily power generation amount of the high-temperature slag is 1.5 x 105 DEG electricity/d
Annual production time is calculated as 330 days per year
Annual energy production: 330 days x 1.5 x 105 degree electric/d
=4.95×107 degree electricity/year
In the foregoing, the present utility model is merely preferred embodiments, which are based on different implementations of the overall concept of the utility model, and the protection scope of the utility model is not limited thereto, and any changes or substitutions easily come within the technical scope of the present utility model as those skilled in the art should not fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (5)
1. A metallurgical high-temperature slag waste heat boiler is characterized by comprising a steam drum (1), a high Wen Chucang (2), a superheater (3), a middle Wen Chucang (4), an evaporator (5), a low Wen Chucang (6), a secondary economizer (7), a hot water tank (8), a primary economizer (9), a water inlet header (10), a water outlet header (11), a heat conducting medium inlet header (12), a heat exchange platform (13), a normal pressure heat exchange device (14) and a heat conducting medium outlet header (15),
the input end of the water inlet header (10) is connected with boiler water supply, the three output ends of the water inlet header (10) are respectively connected with the inlets of the first-stage economizers (9) in the three hot water tanks (8), the outlets of the first-stage economizers (9) in the three hot water tanks (8) are respectively connected with the three input ends of the water outlet header (11), the output end of the water outlet header (11) is connected with the inlet of the second-stage economizers (7) in the low Wen Chucang (6), the outlet of the second-stage economizers (7) in the low Wen Chucang (6) is connected with the water supply mouth of the steam drum (1), the water outlet of the steam drum (1) is connected with the inlet of the evaporator (5) in the medium temperature storage bin (4), the outlet of the evaporator (5) in the medium Wen Chucang (4) is connected with the steam inlet of the steam drum (1), the steam outlet of the steam drum (1) is connected with the inlet of the superheater (3) in the high Wen Chucang (2), the outlet of the superheater (3) in the high Wen Chucang (2) is connected with the power generation system, the outlets of the high Wen Chucang (2), the medium Wen Chucang (4) and the low Wen Chucang (6) are connected with the input end of the heat conducting medium outlet header (15), the output end of the heat conducting medium outlet header (15) is connected with the inlet of the heat exchange platform (13) and the inlet of the normal pressure heat exchange device (14), the outlet of the heat exchange platform (13) and the outlet of the normal pressure heat exchange device (14) are connected to the input end of the heat conducting medium outlet header (15), the output end of the heat conducting medium outlet header (15) is respectively connected to the inlets of the high Wen Chucang (2), the middle Wen Chucang (4) and the low Wen Chucang (6) through pumps, the high temperature furnace slag (16) is placed on the upper portion of the heat exchange platform (13), and the normal pressure heat exchange device (14) is arranged on the high temperature furnace slag (16).
2. The metallurgical high-temperature slag waste heat boiler according to claim 1, wherein the heating surface pipes of the superheater (3), the primary economizer (9) and the secondary economizer (7) are toothed fin pipes.
3. A metallurgical high temperature slag waste heat boiler according to claim 1, characterized in that the heating surface tube of the evaporator (5) is a spiral fin tube or an H-type fin tube.
4. The metallurgical high-temperature slag waste heat boiler according to claim 1, wherein the normal pressure heat exchanging device (14) is a square normal pressure heat exchanging container.
5. The metallurgical high temperature slag waste heat boiler of claim 1, wherein the temperature of the high temperature storage bin (2) is 330 ℃ to 380 ℃, the temperature of the intermediate Wen Chucang (4) is 330 ℃ to 210 ℃, and the temperature of the low Wen Chucang (6) is 210 ℃ to 150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320105295.3U CN220583122U (en) | 2023-02-03 | 2023-02-03 | Metallurgical high-temperature slag waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320105295.3U CN220583122U (en) | 2023-02-03 | 2023-02-03 | Metallurgical high-temperature slag waste heat boiler |
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| Publication Number | Publication Date |
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| CN220583122U true CN220583122U (en) | 2024-03-12 |
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|---|---|---|---|
| CN202320105295.3U Active CN220583122U (en) | 2023-02-03 | 2023-02-03 | Metallurgical high-temperature slag waste heat boiler |
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| Country | Link |
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| CN (1) | CN220583122U (en) |
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2023
- 2023-02-03 CN CN202320105295.3U patent/CN220583122U/en active Active
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