CN113404562A - Steam supply system for power generation by waste heat steam of converter in iron and steel plant - Google Patents
Steam supply system for power generation by waste heat steam of converter in iron and steel plant Download PDFInfo
- Publication number
- CN113404562A CN113404562A CN202110781156.8A CN202110781156A CN113404562A CN 113404562 A CN113404562 A CN 113404562A CN 202110781156 A CN202110781156 A CN 202110781156A CN 113404562 A CN113404562 A CN 113404562A
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- Prior art keywords
- steam
- converter
- main pipe
- heating furnace
- furnace
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 239000002918 waste heat Substances 0.000 title claims abstract description 11
- 238000010248 power generation Methods 0.000 title claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 8
- 229910052742 iron Inorganic materials 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000007670 refining Methods 0.000 claims abstract description 13
- 238000005292 vacuum distillation Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- -1 drain trap Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Steel plant converter waste heat steam power generation steam supply system, including converter, concise VD stove or RH stove, heating furnace, catch water, drain trap, gas boiler, turbo generator, drainage pump, the female pipe of converter steam, the female pipe of heating furnace steam, the hydrophobic female pipe of whole factory, its characterized in that: the converter steam outlet is respectively connected with a refining VD furnace or an RH furnace, and the converter steam is connected in parallel to a converter steam main pipe through a valve; a steam outlet of the heating furnace is connected in parallel to a steam main pipe of the heating furnace through a pipeline; the converter steam main pipe and the heating furnace steam main pipe are connected in parallel through pipelines and then connected to a steam inlet of the steam-water separator; the steam outlet of the steam-water separator is connected with a gas boiler through a pipeline, and the outlet of the gas boiler is connected with the inlet of a steam turbine generator; the drain outlet of the steam-water separator is connected with a drain tank through a pipeline, a drain pump is arranged on the drain tank, and the outlet of the drain pump is connected to a drain main pipe of the whole plant. The system can ensure the stable working condition of steam at the inlet of the turbonator and ensure the safe and stable operation of the turbonator.
Description
Technical Field
The invention belongs to the technical field of waste heat steam recycling of iron and steel plants, and particularly relates to a converter waste heat steam power generation steam supply system of an iron and steel plant.
Background
Under the background that the steel plant strongly promotes energy conservation and emission reduction, the steel plant sends steam generated by a converter and a heating furnace into a turbine generator to generate electricity. However, in the operation process, steam generated by a converter and a heating furnace in a steel plant needs to be preferentially supplied to a VD furnace or an RH furnace in a converter refining process in the steel plant, and is influenced by the production rhythm change of the VD furnace or the RH furnace in the steel plant refining process and the periodic steam generation of the converter, so that the working condition of the steam sent into the turbonator is greatly changed, and under the severe condition, the steam carries water to cause the abnormal shutdown of the turbonator, and the safe and stable operation of the turbonator is seriously influenced.
Disclosure of Invention
The invention aims to provide a steam supply system for generating power by using waste heat steam of a converter in a steel plant, which ensures the stable working condition of steam at the inlet of a turbonator and ensures the safe and stable operation of the turbonator.
The technical scheme of the invention is as follows:
a steam supply system for generating power by utilizing waste heat steam of a converter in a steel plant comprises the converter, a refining VD (vacuum distillation) furnace or an RH (relative humidity) furnace, a heating furnace, a steam-water separator, a drain tank, a gas boiler, a steam turbine generator, a drain pump, a converter steam main pipe, a heating furnace steam main pipe and a whole plant drain main pipe; the converter steam outlet is respectively connected with a refining VD furnace or an RH furnace, and the converter steam is connected in parallel to a converter steam main pipe through a valve; a steam outlet of the heating furnace is connected in parallel to a steam main pipe of the heating furnace through a pipeline; the converter steam main pipe and the heating furnace steam main pipe are connected in parallel through pipelines and then connected to a steam inlet of the steam-water separator; the steam outlet of the steam-water separator is connected with a gas boiler through a pipeline, and the outlet of the gas boiler is connected with the inlet of a steam turbine generator; the drain outlet of the steam-water separator is connected with a drain tank through a pipeline, a drain pump is arranged on the drain tank, and the outlet of the drain pump is connected to a drain main pipe of the whole plant.
Preferably, high-power automatic steam traps are additionally arranged on steam pipelines from the converter, the heating furnace to the steam-water separator along the lines.
Preferably, a steam-water separator is additionally arranged before the steam enters the steam turbine generator.
Preferably, a gas boiler is added before the steam enters the turbine generator.
The invention has the advantages that: by arranging the automatic steam trap, the drained water in the steam pipeline in the running process can be exhausted under the general condition; the steam-water separator is arranged, so that a large amount of drained water entering a steam main pipe can be separated from steam-water when the working condition is suddenly changed, particularly when a certain converter is suddenly fed with steam, the drained water enters a drain tank, and the steam enters a gas boiler; the steam is heated by the gas boiler, so that the steam at the inlet of the turbonator can be ensured to be superheated steam, and the safe and stable operation of the turbonator is ensured.
Drawings
FIG. 1 is a diagram of a steam supply system for power generation by waste heat steam of a converter in a steel plant.
In the figure: 1-converter; 4-automatic steam trap; 5-a valve; 6, heating a furnace; 8-steam-water separator; 9-a drain tank; 10-gas boiler; 11-a steam turbine generator; 12-refining VD furnace or RH furnace; 15-a hydrophobic pump; 16-converter steam main pipe; 17-heating furnace steam main pipe; 18-whole plant drainage mother pipe.
Detailed Description
The invention is further illustrated by the following figures and examples.
Examples
A steam supply system for generating power by utilizing waste heat steam of a converter in a steel plant comprises three converters 1, three refining VD (vacuum degassing) furnaces or RH (relative humidity) furnaces 12, two heating furnaces 6, a steam-water separator 8, a drain tank 9, a gas boiler 10, a turbonator 11, a drain pump 15, a converter steam main pipe 16, a heating furnace steam main pipe 17 and a whole plant drain main pipe 18. The steam outlet of the converter 1 is respectively connected with a refining VD furnace or an RH furnace 12, and simultaneously, the steam of the converter 1 is connected in parallel to a converter steam main pipe 16 through a valve 5; a steam outlet of the heating furnace 6 is connected in parallel to a steam main pipe 17 of the heating furnace through a pipeline; a converter steam main 16; the heating furnace steam main pipe 17 is connected in parallel through a pipeline and then is connected to a steam inlet of the steam-water separator 8; the steam outlet of the steam-water separator is connected with a gas boiler 10 through a pipeline, and the outlet of the gas boiler 10 is connected with the inlet of a turbine generator; the water outlet of the water separator is connected with a drain tank 9 through a pipeline, a drain pump 15 is arranged on the drain tank, and the outlet of the drain pump is connected to a whole plant drain main pipe 18.
The high-power automatic steam traps 4 are additionally arranged on steam pipelines along the lines from the converter 1, the heating furnace 6 to the steam-water separator 8 (the specific arrangement mode is led out from the lowest point according to the actual situation on site). A steam-water separator 8 is additionally arranged before steam enters the steam turbine generator. Before steam enters the turbine generator, a gas boiler 10 is additionally arranged.
The working process is as follows: after the converter 1 generates steam, the steam is respectively sent into a refining VD furnace or an RH furnace 12, the production of the refining VD furnace or the RH furnace is preferably met, and simultaneously, the steam of the three converters 1 is connected in parallel to a converter steam main pipe 16 through a valve 5; steam generated by the heating furnace 6 is connected in parallel to a heating furnace steam main pipe 17 through a valve; the converter steam main pipe 16 and the heating furnace steam main pipe 17 are combined and then connected to a steam-water separator 8, steam separated by the steam-water separator enters a gas boiler 10 to be heated, and the steam is sent to a steam turbine generator 11 to generate power after reaching the rated operating parameters of the steam turbine generator; the separated drainage after passing through the steam-water separator 8 is stored in a drainage tank 9, a drainage pump 15 is arranged on the drainage tank, when the water level reaches a high-level set value, the drainage pump 15 is started, the drainage is sent to a whole plant drainage main pipe 18 for other users to use, and when the water level reaches a low-level set value, the drainage pump 15 is closed.
The number of the converters is not limited to three, and can be a plurality of converters; the number of the refining VD furnaces or RH furnaces is not limited to three, and can be a plurality of furnaces; the number of the heating furnaces is not limited to two, and can be a plurality of heating furnaces; the valve can be a manual valve or an electric valve.
Claims (2)
1. A steam supply system for generating power by utilizing waste heat steam of a converter in a steel plant comprises the converter, a refining VD (vacuum distillation) furnace or an RH (relative humidity) furnace, a heating furnace, a steam-water separator, a drain tank, a gas boiler, a steam turbine generator, a drain pump, a converter steam main pipe, a heating furnace steam main pipe and a whole plant drain main pipe; the method is characterized in that: the converter steam outlet is respectively connected with a refining VD furnace or an RH furnace, and the converter steam is connected in parallel to a converter steam main pipe through a valve; a steam outlet of the heating furnace is connected in parallel to a steam main pipe of the heating furnace through a pipeline; the converter steam main pipe and the heating furnace steam main pipe are connected in parallel through pipelines and then connected to a steam inlet of the steam-water separator; the steam outlet of the steam-water separator is connected with a gas boiler through a pipeline, and the outlet of the gas boiler is connected with the inlet of a turbine generator.
2. The steel plant converter waste heat steam power generation steam supply system of claim 1, characterized in that: and high-power automatic steam traps are additionally arranged on steam pipelines from the converter, the heating furnace to the steam-water separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110781156.8A CN113404562A (en) | 2021-07-10 | 2021-07-10 | Steam supply system for power generation by waste heat steam of converter in iron and steel plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110781156.8A CN113404562A (en) | 2021-07-10 | 2021-07-10 | Steam supply system for power generation by waste heat steam of converter in iron and steel plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113404562A true CN113404562A (en) | 2021-09-17 |
Family
ID=77685816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110781156.8A Pending CN113404562A (en) | 2021-07-10 | 2021-07-10 | Steam supply system for power generation by waste heat steam of converter in iron and steel plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113404562A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI799080B (en) * | 2022-01-13 | 2023-04-11 | 中國鋼鐵股份有限公司 | System for generating electricity by using gas and steam and control mthod thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201502411U (en) * | 2009-09-07 | 2010-06-09 | 中冶赛迪工程技术股份有限公司 | Steam power generating system by utilizing residual heat of converter gas |
| JP2011163294A (en) * | 2010-02-12 | 2011-08-25 | Chugoku Electric Power Co Inc:The | Coal-gasified gas supply plant |
| CN102620571A (en) * | 2012-04-10 | 2012-08-01 | 上海瑞恩能源投资有限公司 | Waste-heat power generating system in smelting process of rotary kiln and ore-smelting electric furnace |
| CN108119191A (en) * | 2018-01-31 | 2018-06-05 | 福建省东锅节能科技有限公司 | The new complementary energy exhaust heat recovery power generation reconstruction structure of steel plant and its method of work |
| CN208024416U (en) * | 2018-02-28 | 2018-10-30 | 首钢京唐钢铁联合有限责任公司 | Steam control equipment |
| CN110242373A (en) * | 2019-06-21 | 2019-09-17 | 天津天钢联合特钢有限公司 | Gas system is given in a kind of power generation of converter waste heat steam |
| CN213295416U (en) * | 2020-07-10 | 2021-05-28 | 首钢京唐钢铁联合有限责任公司 | Combined synergy system |
-
2021
- 2021-07-10 CN CN202110781156.8A patent/CN113404562A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201502411U (en) * | 2009-09-07 | 2010-06-09 | 中冶赛迪工程技术股份有限公司 | Steam power generating system by utilizing residual heat of converter gas |
| JP2011163294A (en) * | 2010-02-12 | 2011-08-25 | Chugoku Electric Power Co Inc:The | Coal-gasified gas supply plant |
| CN102620571A (en) * | 2012-04-10 | 2012-08-01 | 上海瑞恩能源投资有限公司 | Waste-heat power generating system in smelting process of rotary kiln and ore-smelting electric furnace |
| CN108119191A (en) * | 2018-01-31 | 2018-06-05 | 福建省东锅节能科技有限公司 | The new complementary energy exhaust heat recovery power generation reconstruction structure of steel plant and its method of work |
| CN208024416U (en) * | 2018-02-28 | 2018-10-30 | 首钢京唐钢铁联合有限责任公司 | Steam control equipment |
| CN110242373A (en) * | 2019-06-21 | 2019-09-17 | 天津天钢联合特钢有限公司 | Gas system is given in a kind of power generation of converter waste heat steam |
| CN213295416U (en) * | 2020-07-10 | 2021-05-28 | 首钢京唐钢铁联合有限责任公司 | Combined synergy system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI799080B (en) * | 2022-01-13 | 2023-04-11 | 中國鋼鐵股份有限公司 | System for generating electricity by using gas and steam and control mthod thereof |
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Application publication date: 20210917 |
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