CN109441576B - Saturated steam power generation system - Google Patents
Saturated steam power generation system Download PDFInfo
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- CN109441576B CN109441576B CN201811341906.4A CN201811341906A CN109441576B CN 109441576 B CN109441576 B CN 109441576B CN 201811341906 A CN201811341906 A CN 201811341906A CN 109441576 B CN109441576 B CN 109441576B
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- steam
- heat accumulator
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- generation system
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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
- F01K13/00—General layout or general methods of operation of complete plants
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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
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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
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/003—Arrangements for measuring or testing
-
- 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
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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
- F01K21/00—Steam engine plants not otherwise provided for
-
- 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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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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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- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a saturated steam power generation system which comprises a first flue gas pipeline connected with a gas turbine and a first steam pipeline connected with a steam outlet of a converter, wherein the first flue gas pipeline is connected with a first heat accumulator group; the first heat accumulator group with the second heat accumulator group is connected to the steam mixer, the steam mixer is connected with the steam turbine, and the saturated steam power generation system disclosed by the application can avoid the influence of unstable steam flow on the steam turbine, and effectively utilizes superheated steam and unsaturated steam generated in the production process of iron and steel enterprises.
Description
Technical Field
The invention relates to the field of steam waste heat utilization of iron and steel enterprises, in particular to a saturated steam power generation system.
Background
In the steel rolling and iron making process of steel enterprises, a large amount of steam can be generated, the flow and temperature fluctuation of the steam is large, the steam cannot be directly applied to a steam turbine, the frequent shutdown of a unit is easily caused by the interruption of a heat source, the economic benefit loss is caused, and the service life of equipment is shortened. Therefore, the steam is generally applied to a domestic heat source in a steel enterprise, 90% of the steam is diffused, and serious energy waste is caused.
Disclosure of Invention
In view of this, the present application provides a saturated steam power generation system, which can avoid the influence of unstable steam flow on a steam turbine, and effectively utilize superheated steam and unsaturated steam generated in the production process of a steel enterprise.
In order to solve the technical problems, the technical scheme provided by the invention is a saturated steam power generation system which comprises a first flue gas pipeline connected with a gas turbine and a first steam pipeline connected with a steam outlet of a converter, wherein the first flue gas pipeline is connected with a first heat accumulator group, and the first steam pipeline is connected with a second heat accumulator group; the first heat accumulator set and the second heat accumulator set are connected to a steam mixer, and the steam mixer is connected with a steam turbine.
Preferably, the first heat accumulator group is further connected with a diffusion steam pipe, and the diffusion steam pipe is used for introducing low-pressure and low-temperature unsaturated steam.
Preferably, a saturated steam outlet is arranged on the first heat accumulator group, and the saturated steam outlet is connected to the steam mixer.
Preferably, be provided with first steam inlet and second steam inlet on the steam mixer, first steam inlet connects first heat accumulator group, second steam inlet connects second heat accumulator group, first steam inlet is provided with first flow control valve, second steam inlet is provided with first flow control valve, be provided with detection module in the steam mixer, detection module connects first flow control valve and first flow control valve for adjust the flow of first flow control valve and first flow control valve, make steam pressure and temperature keep unanimous in the steam mixer.
Preferably, the detection module comprises a temperature detection module and a steam pressure detection module.
Preferably, a condensed water outlet of the steam turbine is connected with a condensed water storage device, the condensed water storage device is connected with an oxygen removing machine through an electric control pump, and the oxygen removing machine is connected with a water return port of the converter.
Preferably, the condensed water storage device is further connected with a backwashing pipeline, and the backwashing pipeline is connected to the first heat storage group through a booster pump.
Compared with the prior art, the detailed description of the application is as follows:
the application discloses saturated steam power generation system can utilize the flue gas that contains a large amount of heats that gas turbine burning produced and converter exhaust saturated steam, makes its heat exchange respectively produce and mixes into the saturated steam of steady pressure and heat after the steam, sends into and generates electricity in the steam turbine. Compared with the prior art, the method can avoid the influence of the flow and temperature fluctuation of the steam generated by enterprises on the steam turbine, comprehensively utilize the waste heat generated by different boilers, effectively utilize the superheated steam and unsaturated steam generated in the production process of the iron and steel enterprises, save energy and reduce energy consumption.
This application can also utilize the diffuse steam, makes the superheated steam who diffuses steam and heat entropy value higher mix, even diffuse steam flow is lower, the temperature is lower, still can regard as supplementary heat source to use.
The flow of the first flow regulating valve and the flow of the first flow regulating valve are regulated by detecting the temperature and the steam pressure of the steam in the steam mixer, and when the temperature or the steam pressure of the steam in the steam mixer is detected to be lower, the flow of the first flow regulating valve is increased, so that the steam pressure of the steam mixer is kept stable, and the working requirement of the steam turbine is met.
Condensed water is sent into the first heat accumulator group after being pressurized by the booster pump and is used for backwashing particles formed by heat exchange and adhesion of flue gas in the first heat accumulator group. This application utilizes the comdenstion water to carry out the back flush, therefore the flue gas can directly let in first heat accumulator group, and the heat of make full use of flue gas need not earlier through filtering separation, consequently can avoid losing because of the heat that filtering separation leads to. Therefore, compared with the prior art, the heat utilization rate is higher.
Drawings
Fig. 1 is a schematic structural diagram of the system of the present application.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a saturated steam power generation system includes a first flue gas pipeline 2 and a first steam pipeline 4, the first flue gas pipeline 2 is connected with a first heat accumulator group 5, the first steam pipeline 4 is connected with a second heat accumulator group 6, the first heat accumulator group 5 and the second heat accumulator group 6 are connected to a steam mixer 7, and the steam mixer 7 is connected to a steam turbine 8.
The first flue gas pipeline 2 is connected with a gas turbine 1, superheated flue gas discharged by combustion in the gas turbine 1 is introduced into a first heat accumulator group 5 through the first flue gas pipeline 2, and water in the first heat accumulator group 5 and the superheated flue gas generate heat exchange to form first saturated steam;
the first steam pipeline 4 is connected with the converter 3, saturated steam discharged from a steam outlet of the converter 3 is introduced into the second heat accumulator group 6 through the first steam pipeline 4, and water in the second heat accumulator group 6 and superheated flue gas generate heat exchange to form second saturated steam.
The heat of the superheated flue gas is high, the formed first saturated steam pressure is high, the steam flow is high, the heat of the saturated steam in the converter 3 is low, the flow fluctuation is high, the formed second saturated steam pressure is low, and the steam flow is low.
The first saturated steam and the second saturated steam are mixed in a steam mixer 7, and are introduced into a steam turbine 8 to generate power after the temperature and the pressure are adjusted.
The first heat accumulator group 5 is also connected with a diffusion steam pipe 9, and the diffusion steam pipe 9 is used for introducing low-pressure and low-temperature unsaturated steam for diffusion in the iron and steel enterprises. Unsaturated steam is sent into the first heat accumulator group 5 and is used as an auxiliary heat source to be additionally sent into the first heat accumulator group 5.
The first heat accumulator group 5 is provided with a saturated steam outlet 10 and a superheated steam outlet 11, and the saturated steam outlet 10 is connected to the steam mixer 7; the superheated steam outlet 11 is connected to the first steam pipeline 4, when the flow rate of the unsaturated steam is low, the superheated steam is generated in the first heat accumulator group 5 after the superheated flue gas in the first heat accumulator group 5 is mixed with the unsaturated steam, and when the flow rate of the unsaturated steam is high, the superheated flue gas in the first heat accumulator group 5 is mixed with the unsaturated steam, the saturated steam is generated in the first heat accumulator group 5. Both superheated steam and saturated steam can be mixed in a steam mixer 7 with the saturated steam fed in from the second heat accumulator bank 6.
The steam mixer 7 is provided with a first steam inlet 13 and a second steam inlet 14, the first steam inlet 13 is connected with the first heat accumulator group 5, the second steam inlet 14 is connected with the second heat accumulator group 6, the first steam inlet 13 is provided with a first flow regulating valve 15, the second steam inlet 14 is provided with a first flow regulating valve 16, the steam mixer 7 is provided with a detection module 17, the detection module 17 is connected with the first flow regulating valve 15 and the first flow regulating valve 16 and used for regulating the flow of the first flow regulating valve 15 and the first flow regulating valve 16, so that the steam pressure and the temperature in the steam mixer 7 are kept consistent. The detection module 17 includes a temperature detection module 17 and a steam pressure detection module 17. The flow rates of the first flow regulating valve 15 and the first flow regulating valve 16 are regulated by detecting the temperature and the steam pressure of the steam in the steam mixer 7, and when the temperature or the steam pressure of the steam in the steam mixer 7 is detected to be lower, the flow rate of the first flow regulating valve 15 is increased, so that the steam pressure of the steam mixer 7 is kept stable, and the working requirement of the steam turbine 8 is met.
A condensate water outlet of the steam turbine 8 is connected with a condensate water storage 18, the condensate water storage 18 is connected with an oxygen removing machine 20 through an electric control pump 19, and the oxygen removing machine 20 is connected with a water return port of the converter 3. The condensed water can be used as make-up water for the converter 3.
The condensate storage 18 is also connected with a backwash pipeline 11, and the backwash pipeline 11 is connected to the first heat storage group 5 through a booster pump 12. The condensed water is pressurized by the booster pump and then sent into the first heat accumulator group 5 for backwashing the particles formed in the first heat accumulator group 5 due to heat exchange and adhesion of the flue gas.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (5)
1. A saturated steam power generation system is characterized by comprising a first flue gas pipeline (2) connected with a gas turbine (1) and a first steam pipeline (4) connected with a steam outlet of a converter (3), wherein the first flue gas pipeline (2) is connected with a first heat accumulator set (5), and the first steam pipeline (4) is connected with a second heat accumulator set (6); the first heat accumulator set (5) and the second heat accumulator set (6) are connected to a steam mixer (7), and the steam mixer (7) is connected with a steam turbine (8);
a condensed water outlet of the steam turbine (8) is connected with a condensed water storage (18), the condensed water storage (18) is connected with an oxygen removing machine (20) through an electric control pump (19), and the oxygen removing machine (20) is connected with a water return port of the converter (3);
the condensed water storage device (18) is also connected with a backwashing pipeline (11), and the backwashing pipeline (11) is connected to the first heat storage group (5) through a booster pump (12).
2. A saturated steam power generation system according to claim 1, characterized in that a diffusion steam pipe (9) is further connected to the first heat accumulator set (5), and the diffusion steam pipe (9) is used for introducing low-pressure and low-temperature unsaturated steam.
3. A saturated steam power generation system according to claim 2, characterised in that the first accumulator bank (5) is provided with a saturated steam outlet (10), the saturated steam outlet (10) being connected to the steam mixer (7).
4. A saturated steam power generation system according to claim 1, characterized in that the steam mixer (7) is provided with a first steam inlet (13) and a second steam inlet (14), the first steam inlet (13) is connected with the first heat accumulator group (5), the second steam inlet (14) is connected with the second heat accumulator group (6), the first steam inlet (13) is provided with a first flow regulating valve (15), the second steam inlet (14) is provided with a first flow regulating valve (16), a detection module (17) is arranged in the steam mixer (7), the detection module (17) is connected with a first flow regulating valve (15) and a first flow regulating valve (16), the flow rate of the first flow regulating valve (15) and the flow rate of the first flow regulating valve (16) are regulated, so that the steam pressure and the temperature in the steam mixer (7) are kept consistent.
5. A saturated steam power generation system according to claim 4, characterized in that said detection module (17) comprises a temperature detection module and a steam pressure detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341906.4A CN109441576B (en) | 2018-11-12 | 2018-11-12 | Saturated steam power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341906.4A CN109441576B (en) | 2018-11-12 | 2018-11-12 | Saturated steam power generation system |
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| CN109441576A CN109441576A (en) | 2019-03-08 |
| CN109441576B true CN109441576B (en) | 2021-08-10 |
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| CN201811341906.4A Active CN109441576B (en) | 2018-11-12 | 2018-11-12 | Saturated steam power generation system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562189A (en) * | 2012-03-14 | 2012-07-11 | 思安新能源股份有限公司 | Low-pressure saturated steam recycling equipment |
| JP2014092158A (en) * | 2012-11-05 | 2014-05-19 | General Electric Co <Ge> | Combined cycle power plant with absorption heat transformer |
| CN204002957U (en) * | 2014-08-13 | 2014-12-10 | 昆明钢铁集团有限责任公司 | A kind of Waste Energy In Iron & Steel Enterprises comprehensive high-efficiency power generation system |
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2018
- 2018-11-12 CN CN201811341906.4A patent/CN109441576B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562189A (en) * | 2012-03-14 | 2012-07-11 | 思安新能源股份有限公司 | Low-pressure saturated steam recycling equipment |
| JP2014092158A (en) * | 2012-11-05 | 2014-05-19 | General Electric Co <Ge> | Combined cycle power plant with absorption heat transformer |
| CN204002957U (en) * | 2014-08-13 | 2014-12-10 | 昆明钢铁集团有限责任公司 | A kind of Waste Energy In Iron & Steel Enterprises comprehensive high-efficiency power generation system |
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| CN109441576A (en) | 2019-03-08 |
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