CN220454304U - Efficient power generation system for producing superheated steam by converter flue gas waste heat - Google Patents
Efficient power generation system for producing superheated steam by converter flue gas waste heat Download PDFInfo
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- CN220454304U CN220454304U CN202321905704.4U CN202321905704U CN220454304U CN 220454304 U CN220454304 U CN 220454304U CN 202321905704 U CN202321905704 U CN 202321905704U CN 220454304 U CN220454304 U CN 220454304U
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- power generation
- steam
- storage medium
- heat storage
- generation system
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- 238000010248 power generation Methods 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000003546 flue gas Substances 0.000 title claims abstract description 19
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 238000005338 heat storage Methods 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 238000009834 vaporization Methods 0.000 claims abstract description 24
- 230000008016 vaporization Effects 0.000 claims abstract description 23
- 239000000779 smoke Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 150000003839 salts Chemical class 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 229920006395 saturated elastomer Polymers 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a high-efficiency power generation system for producing superheated steam by using waste heat of converter flue gas, which comprises a converter, a movable smoke hood and a boiler barrel, wherein a deoxidization water pipeline is connected to the movable smoke hood and the boiler barrel; the heat storage medium cooling flue is communicated with a high-temperature heat storage medium tank and a low-temperature heat storage medium tank through a medium heating pipeline, and a steam superheater is arranged between the high-temperature heat storage medium tank and the low-temperature heat storage medium tank through a medium circulating pipeline; a steam heat accumulator is arranged between the steam superheater and the boiler barrel, and the steam superheater is also connected with power generation equipment. The utility model aims to provide a power generation system which can ensure the operation safety of a vaporization cooling flue and improve the steam quality so as to improve the power generation capacity of ton steel.
Description
Technical Field
The utility model relates to the technical field of deep utilization of industrial waste heat, in particular to a high-efficiency power generation system for producing superheated steam by using waste heat of converter flue gas.
Background
With the rapid development of smelting technology, oxygen top-blown converter steelmaking has become a main steelmaking method at home and abroad, and a vaporization cooling flue is used as key equipment for recovering and cooling converter flue gas waste heat. The temperature of the flue gas at the outlet of the converter can reach 1200-1600 ℃, the traditional vaporization cooling flue is to recycle the heat of the flue gas and reduce the temperature of the flue gas to 800-900 ℃, and the interior of the vaporization cooling flue pipe is water and the exterior of the vaporization cooling flue pipe is flue gas. The vaporization cooling flue is in a high-temperature, high-pressure and multi-dust environment for a long time, the heat load changes rapidly along with the frequent smelting period, and the accident rate of water leakage of the wall of the vaporization cooling flue is higher in the life cycle. From the aspects of steam production continuity and steam production quality improvement, many manufacturers utilize molten salt to replace water in a vaporization cooling flue, heat accumulation molten salt generates superheated steam through heat exchange again to generate electricity, and although the steam stripping quality can be solved so as to improve the generating capacity and the problem of discontinuous production, the wall of the vaporization cooling flue leaks, and the molten salt leaks into high-temperature flue gas or falls into a converter, so that serious production potential safety hazards can be brought. Therefore, a power generation system capable of ensuring the operation safety of the vaporization cooling flue and improving the steam quality to improve the power generation capacity of ton steel is needed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and aims to provide a power generation system which can ensure the operation safety of a vaporization cooling flue and improve the steam quality so as to improve the power generation capacity of ton steel.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the high-efficiency power generation system for producing superheated steam by using the waste heat of the converter smoke comprises a converter, a movable smoke hood and a boiler barrel, wherein a deoxidization water pipeline is connected to the movable smoke hood and the boiler barrel, one side of the movable smoke hood is used for recovering high-temperature smoke of the converter, the other side of the movable smoke hood is provided with a vaporization cooling flue, and the tail part of the vaporization cooling flue is communicated with the boiler barrel and is provided with a heat storage medium cooling flue; the heat storage medium cooling flue is communicated with a high-temperature heat storage medium tank and a low-temperature heat storage medium tank through a medium heating pipeline, and a steam superheater is arranged between the high-temperature heat storage medium tank and the low-temperature heat storage medium tank through a medium circulating pipeline; a steam heat accumulator is arranged between the steam superheater and the boiler barrel, the steam superheater is also connected with power generation equipment, and the boiler barrel, the steam heat accumulator, the steam superheater and the power generation equipment are communicated through a steam pipeline in sequence; the power generation equipment is provided with condensing equipment in a matching way, and a deaerator is arranged between the condensing equipment and the boiler barrel.
Further, the power generation device is composed of a steam turbine and a generator.
Further, the condensing equipment comprises a condenser and a cooling tower, and a condensate pump is arranged between the condenser and the deaerator.
Furthermore, the heat storage mediums in the high-temperature heat storage medium tank and the low-temperature heat storage medium tank are molten salt or heat conduction oil.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the waste heat of the converter flue gas is utilized, the safety of waste heat recovery is ensured by utilizing the vaporization cooling flue, the heat storage medium is heated by utilizing the heat storage medium cooling flue, and the saturated steam obtained at first is heated by the heated high-temperature heat storage medium to obtain the superheated steam, so that the generating capacity of ton steel is improved, and the utilization efficiency of the converter flue gas waste heat is greatly improved. Meanwhile, a steam heat accumulator is arranged between the boiler barrel and the steam superheater, so that continuity of saturated steam generation is realized, waste heat energy storage is realized through a heat accumulation medium, the saturated steam is taken as superheated steam, and stable and continuous operation of the power generation system is ensured.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Reference numerals:
the device comprises a 1-converter, a 2-movable smoke hood, a 3-vaporization cooling flue, a 4-heat storage medium cooling flue, a 5-drum, a 6-steam heat accumulator, a 7-steam superheater, an 8-high temperature heat storage medium tank, a 9-low temperature heat storage medium tank, a 10-steam turbine, an 11-generator, a 12-condenser, a 13-cooling tower, a 14-condensate pump, a 15-deaerator, a 16-deaeration water pipeline, a 17-medium heating pipeline, a 18-medium circulation pipeline and a 19-steam pipeline.
Detailed Description
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1, the high-efficiency power generation system for producing superheated steam by using the waste heat of converter smoke comprises a converter 1, a movable smoke hood 2 and a boiler barrel 5, wherein a deoxidization water pipeline 16 is connected to the movable smoke hood 2 and the boiler barrel 5, one side of the movable smoke hood 2 is used for recovering high-temperature smoke of the converter 1, the other side of the movable smoke hood 2 is provided with a vaporization cooling flue 3, and the tail part of the vaporization cooling flue 3 is communicated with the boiler barrel 5 and is provided with a heat storage medium cooling flue 4; the heat storage medium cooling flue 4 is communicated with a high-temperature heat storage medium tank 8 and a low-temperature heat storage medium tank 9 through a medium heating pipeline 17, and a steam superheater 7 is arranged between the high-temperature heat storage medium tank 8 and the low-temperature heat storage medium tank 9 through a medium circulating pipeline 18; a steam heat accumulator 6 is arranged between the steam superheater 7 and the boiler barrel 5, the steam superheater 6 is also connected with power generation equipment, and the boiler barrel 5, the steam heat accumulator 6, the steam superheater 7 and the power generation equipment are communicated through a steam pipeline 19 in sequence; the power generation equipment is provided with condensing equipment in a matching way, and a deaerator 15 is arranged between the condensing equipment and the boiler barrel 5.
In the present utility model, the power generation facility is composed of a steam turbine 10 and a generator 11, and generates power by using the finally generated superheated steam. The condensing equipment is composed of a condenser 12 and a cooling tower 13, a condensate pump 14 is arranged between the condenser 12 and a deaerator 15, and the condenser 12 is cooled by circulating cooling water to be sent to the cooling tower 13 for heat dissipation. The heat storage mediums in the high-temperature heat storage medium tank 8 and the low-temperature heat storage medium tank 9 are molten salt or heat conduction oil.
The power generation process of the utility model is as follows: the high-temperature flue gas with the temperature range of 900-1600 ℃ is produced in the steelmaking process of the converter 1, the waste heat of the high-temperature flue gas is recovered through the movable smoke hood 2 and the vaporization cooling flue 3, deoxygenated water is sent into the vaporization cooling flue 3 through the boiler barrel 5 and the deoxygenated water pipeline 16 by the deoxygenator 15, saturated steam is produced, and the pipeline is a rising section. The saturated steam thus produced is fed to the drum 5 again, and the saturated steam is fed to the steam accumulator 6 through the steam pipe 19. The descending section of the vaporization cooling flue 3 is a heat storage medium cooling flue 4, the heat storage medium cooling flue 4 recovers residual flue gas waste heat with the temperature in the range of 800-1000 ℃ and is used for heating low-temperature heat storage medium conveyed by a low-temperature heat storage medium tank 9 through a medium heating pipeline 17, then the heated high-temperature heat storage medium is conveyed into a high-temperature heat storage medium tank 8 through the medium heating pipeline 17, and the high-temperature heat storage medium tank 8 conveys the high-temperature heat storage medium into a steam superheater 7 through a medium circulating pipeline 18. In the steam superheater 7, the high-temperature heat storage medium and the saturated steam are heat-transferred, so that the saturated steam heating body continuously fed from the steam regenerator 6 is superheated steam. The superheated steam enters a steam turbine 10 to drive a generator 11 to generate power, the steam is cooled through a condenser 12 after power generation, condensed water is sent into a deaerator 15 by a condensate pump 14 to deoxidize, and then is sent into a drum 5, and the water enters the next waste heat recovery and recycling.
In the process of generating saturated steam, when oxygen is blown or not blown by the converter 1, deoxygenated water of the power generation system is continuously fed into the movable hood 2 and the vaporization cooling flue 3, and is used for generating saturated steam when oxygen is blown, and the movable hood 2 and the vaporization cooling flue 3 can be protected when oxygen is not blown. The steam accumulator 6 is provided between the drum 5 and the steam superheater 7 to continuously and stably generate saturated steam due to the discontinuity of the saturated steam.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (4)
1. The utility model provides a high-efficient power generation system of superheated steam is produced to converter flue gas waste heat, includes converter (1), activity petticoat pipe (2) and drum (5), its characterized in that: the movable smoke hood (2) and the boiler barrel (5) are connected with a deoxidizing water pipeline (16), one side of the movable smoke hood (2) is used for recycling high-temperature smoke of the converter (1), the other side of the movable smoke hood (2) is provided with a vaporization cooling flue (3), and the tail part of the vaporization cooling flue (3) is communicated with the boiler barrel (5) and is provided with a heat storage medium cooling flue (4); the heat storage medium cooling flue (4) is communicated with a high-temperature heat storage medium tank (8) and a low-temperature heat storage medium tank (9) through a medium heating pipeline (17), and a steam superheater (7) is arranged between the high-temperature heat storage medium tank (8) and the low-temperature heat storage medium tank (9) through a medium circulating pipeline (18); a steam heat accumulator (6) is arranged between the steam superheater (7) and the boiler barrel (5), the steam superheater (7) is also connected with power generation equipment, and the boiler barrel (5), the steam heat accumulator (6), the steam superheater (7) and the power generation equipment are communicated through a steam pipeline (19) in sequence; the power generation equipment is provided with condensing equipment in a matching way, and a deaerator (15) is arranged between the condensing equipment and the boiler barrel (5).
2. The efficient power generation system for producing superheated steam by using waste heat of converter flue gas according to claim 1, wherein the efficient power generation system comprises the following components: the power generation device is composed of a steam turbine (10) and a generator (11).
3. The efficient power generation system for producing superheated steam by using waste heat of converter flue gas according to claim 1, wherein the efficient power generation system comprises the following components: the condensing equipment is composed of a condenser (12) and a cooling tower (13), and a condensate pump (14) is arranged between the condenser (12) and a deaerator (15).
4. The efficient power generation system for producing superheated steam by using waste heat of converter flue gas according to claim 1, wherein the efficient power generation system comprises the following components: the heat storage mediums in the high-temperature heat storage medium tank (8) and the low-temperature heat storage medium tank (9) are molten salt or heat conduction oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321905704.4U CN220454304U (en) | 2023-07-19 | 2023-07-19 | Efficient power generation system for producing superheated steam by converter flue gas waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321905704.4U CN220454304U (en) | 2023-07-19 | 2023-07-19 | Efficient power generation system for producing superheated steam by converter flue gas waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220454304U true CN220454304U (en) | 2024-02-06 |
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ID=89730661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321905704.4U Active CN220454304U (en) | 2023-07-19 | 2023-07-19 | Efficient power generation system for producing superheated steam by converter flue gas waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220454304U (en) |
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2023
- 2023-07-19 CN CN202321905704.4U patent/CN220454304U/en active Active
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