CN218565401U - Multi-steam-source energy utilization system for efficiency improvement power generation and coupled heat supply by using sintering waste heat - Google Patents
Multi-steam-source energy utilization system for efficiency improvement power generation and coupled heat supply by using sintering waste heat Download PDFInfo
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- 239000002918 waste heat Substances 0.000 title claims abstract description 172
- 238000005245 sintering Methods 0.000 title claims abstract description 67
- 238000010248 power generation Methods 0.000 title claims abstract description 29
- 230000006872 improvement Effects 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
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- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims description 73
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 11
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- 239000013589 supplement Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 abstract description 3
- 230000001502 supplementing effect Effects 0.000 description 14
- 238000003860 storage Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 238000009628 steelmaking Methods 0.000 description 2
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- 238000001816 cooling Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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Abstract
The utility model discloses an energy utilization system for multi-steam source utilization of sintering waste heat to raise effect for power generation and coupling heat supply, which belongs to the technical field of waste heat power generation of iron and steel enterprises, and aims to utilize waste heat steam sources of different qualities in the iron and steel enterprises for power generation, the energy utilization system for multi-steam source utilization of sintering waste heat to raise effect for power generation and coupling heat supply comprises an electric furnace waste heat system (1), a converter waste heat system (2), a sintering waste heat system (3), a steel rolling heating furnace waste heat system (4), a steam energy storage tank (5), a heat exchange device (6), a power generation system (7) and a hot water energy storage tank (8); the energy utilization system with the multiple steam sources for generating power by utilizing sintering waste heat and coupling heat supply can integrate waste heat steam sources with various parameter qualities in a steel plant and apply the integrated waste heat steam sources to generate power, can also recover the heat of circulating cooling water of a generating set, supplies hot water outwards and further improves the waste heat utilization rate.
Description
Technical Field
The utility model relates to a steel enterprise waste heat power generation technical field, it is specific that a many vapour sources utilize sintering waste heat to carry the energy utilization system of effect electricity generation and coupling heat supply.
Background
In industrial enterprises, particularly iron and steel enterprises, a plurality of waste heat resources can be utilized, and steam is generated and conveyed outwards. Such as: sintering waste heat steam, converter waste heat steam, electric furnace waste heat steam, steel rolling heating furnace waste heat steam and the like. The sintering waste heat steam is generally applied to a power generation system due to the high temperature of the sintering waste heat steam. However, in systems such as converter steelmaking, electric furnace steelmaking, and steel rolling heating furnaces, a large amount of saturated steam generated by evaporative cooling is generated due to the quality of the steam and the discontinuity of the converter and electric furnace process production. The produced steam cannot be widely applied to industrial users, and can only be used as low-quality users for life or heating and the like mostly through a low-pressure steam pipe network in a plant area. And because the user's quantity is little and the continuity is poor, still can have a large amount of waste heat saturated steam to be discharged in the atmosphere, not only reduced enterprise's comprehensive economic benefits, also caused the pollution to the environment simultaneously.
Therefore, combining different quality steam sources and then delivering the combined steam sources to industrial users or generating electricity to increase the use efficiency is an accepted technical method which is advocated in recent years. The conventional combined gas source only sends the steam with different qualities to the user side, and the difference between the steam sources is absorbed by the user, so that the effect of combined use is achieved. However, the mode usually has higher requirements on users, the parameter range of steam which needs to be used by the users is large, the system is complex, auxiliary equipment facilities can be independently arranged aiming at the steam with different qualities, and the investment and maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
In order to utilize the waste heat vapour source electricity generation of different qualities among the iron and steel enterprise, the utility model provides a many vapour sources utilize sintering waste heat to carry out effect electricity generation and the energy utilization system of coupling heat supply, many vapour sources utilize sintering waste heat to carry out effect electricity generation and the energy utilization system of coupling heat supply not only can be applied to the electricity generation after the waste heat vapour source integration of multiple parameter quality in the iron and steel factory, can also retrieve the heat of generating set recirculated cooling water to outside supply hot water, further improve waste heat utilization.
The utility model provides a technical scheme that its technical problem adopted is:
a multi-steam-source energy utilization system for efficiency improvement and power generation and coupled heat supply by using sintering waste heat comprises an electric furnace waste heat system, a converter waste heat system, a sintering waste heat system, a steel rolling heating furnace waste heat system, a steam energy storage tank, a heat exchange device, a power generation system and a hot water energy storage tank; the electric furnace waste heat steam in the electric furnace waste heat system can enter the heat exchange device to absorb heat or enter the steam energy storage tank to be stored, the converter waste heat steam in the converter waste heat system can enter the heat exchange device to absorb heat or enter the steam energy storage tank to store, the steam in the steam energy storage tank can enter the heat exchange device to absorb heat, the steel rolling heating furnace waste heat steam in the steel rolling heating furnace waste heat system can enter the heat exchange device to absorb heat, the sintering waste heat steam in the sintering waste heat system can enter the heat exchange device to release heat, the power generation system comprises a steam turbine and a condenser, the steam discharged by the heat exchange device can enter the steam turbine of the power generation system, the steam discharged by the steam turbine can enter the condenser to release heat, and the water in the hot water energy storage tank can enter the condenser to absorb heat.
The heat exchange device comprises a first steam heat absorption inlet, a first steam heat absorption outlet, a first steam heat release inlet, a first steam heat release outlet, a second steam heat absorption inlet, a second steam heat absorption outlet, a second steam heat release inlet and a second steam heat release outlet.
The electric furnace waste heat system comprises an electric furnace waste heat steam supply pipeline, the converter waste heat system comprises a converter waste heat steam supply pipeline, the electric furnace waste heat steam supply pipeline and the converter waste heat steam supply pipeline are connected with a first steam heat absorption inlet of the heat exchange device through a steam mixing main pipe, and the steel rolling heating furnace waste heat system is connected with a second steam heat absorption inlet of the heat exchange device through a steel rolling heating furnace waste heat steam supply pipeline.
The sintering waste heat system comprises a sintering high-pressure steam production conveying pipeline and a sintering low-pressure steam production conveying pipeline, the sintering high-pressure steam production conveying pipeline is connected with the first steam heat release inlet, and the sintering low-pressure steam production conveying pipeline is connected with the second steam heat release inlet.
The energy utilization system for multi-steam source utilization of sintering waste heat to improve efficiency and generate electricity and supply heat in a coupling mode comprises two steam energy storage tanks, one steam energy storage tank is connected with an electric furnace waste heat steam supply pipeline through a first steam inlet and outlet pipe, and the other steam energy storage tank is connected with a converter waste heat steam supply pipeline through a second steam inlet and outlet pipe.
The heat exchange device is a waste heat boiler, the heat exchange device is internally provided with an inner chamber, and a first heat absorption pipe, a first heat release pipe, a second heat absorption pipe and a second heat release pipe are arranged in the inner chamber.
The first steam heat absorption inlet and the first steam heat absorption outlet are respectively positioned at two ends of the first heat absorption pipe, the first steam heat release inlet and the first steam heat release outlet are respectively positioned at two ends of the first heat release pipe, the second steam heat absorption inlet and the second steam heat absorption outlet are respectively positioned at two ends of the second heat absorption pipe, and the second steam heat release inlet and the second steam heat release outlet are respectively positioned at two ends of the second heat release pipe.
The steam turbine is a steam-supplementing and condensing steam turbine, the steam-supplementing and condensing steam turbine comprises a high-medium pressure cylinder and a low-vacuum low-pressure cylinder which are sequentially connected, a main steam inlet of the high-medium pressure cylinder is externally connected with a main steam input pipeline, and a steam-supplementing inlet of the high-medium pressure cylinder is externally connected with a steam-supplementing input pipeline; the first steam heat absorption outlet is connected with the main steam input pipeline through a first branch pipe, the first steam heat release outlet is connected with the main steam input pipeline through a second branch pipe, the second steam heat absorption outlet is connected with the steam supplementing input pipeline through a third branch pipe, and the second steam heat release outlet is connected with the steam supplementing input pipeline through a fourth branch pipe.
The steam outlet of the high-medium pressure cylinder is communicated with the steam inlet of the low-vacuum low-pressure cylinder, the condenser comprises a heat release working medium inlet, a heat release working medium outlet, a heat absorption working medium inlet and a heat absorption working medium outlet, the steam outlet of the low-vacuum low-pressure cylinder is communicated with the heat release working medium inlet of the condenser, and the heat release working medium outlet of the condenser is externally connected with a water replenishing pipe.
The outlet of the hot water energy storage tank is connected with the heat absorption working medium inlet of the condenser through a water supply pipe, the inlet of the hot water energy storage tank is connected with the heat absorption working medium outlet of the condenser through a water return pipe, the water supply pipe is connected with a water supply pipe line of a terminal user heat supply network, and the water return pipe is connected with a water return pipe line of the terminal user heat supply network.
The utility model has the advantages that:
1. after being integrated, the waste heat steam sources with various parameter qualities in the steel plant are applied to a power generation system, so that the utilization rate of the waste heat steam is improved.
2. The intermittent waste heat resources such as the electric furnace, the converter and the like are subjected to peak clipping and valley filling, the delivery is stable, and the steam parameter quality is improved.
3. When improving different parameter saturated steam quality, all utilize sintering exhaust-heat boiler evaporimeter, and can combine the use scene, adopt integral or split type structure, improve the efficiency with different quality waste heat resources, and all incorporate into power generation system.
4. By adopting the low-vacuum low-pressure cylinder and the low-vacuum condenser, the heat of the circulating cooling water of the generator set is recovered, and hot water is supplied to the outside, so that the waste heat utilization rate is further improved.
5. The energy storage body is utilized in the external hot water supply pipe network, the abundant heat in the circulating water of the generator set is temporarily stored, and the external hot water supply pipe network can be applied to end users who intermittently take heat so as to increase the energy supply area of the users who intermittently take heat.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a heat exchange device of an energy utilization system with multiple steam sources utilizing sintering waste heat to raise efficiency, generate electricity and supply heat in a coupling mode, wherein the heat exchange device is of a split structure.
FIG. 2 is a schematic diagram of the heat exchange device of the energy utilization system with multiple steam sources utilizing sintering waste heat to enhance efficiency and generate power and coupled to supply heat.
The reference numerals are explained below:
1. an electric furnace waste heat system; 2. a converter waste heat system; 3. a sintering waste heat system; 4. a waste heat system of a steel rolling heating furnace; 5. a steam energy storage tank; 6. a heat exchange device; 7. a power generation system; 8. a hot water energy storage tank;
11. an electric furnace waste heat steam supply pipeline;
21. a converter waste heat steam supply pipeline;
31. sintering the high-pressure steam production conveying pipeline; 32. sintering the low-pressure steam production conveying pipeline;
41. a waste heat steam supply pipeline of the steel rolling heating furnace;
51. a first steam inlet pipe and a first steam outlet pipe; 52. a second steam inlet pipe and a second steam outlet pipe;
61. a first steam heat absorption inlet; 62. a first steam heat absorption outlet; 63. a first steam heat release inlet; 64. a first steam heat release outlet; 65. a second steam heat absorption inlet; 66. a second steam heat absorption outlet; 67. a second steam exothermic inlet; 68. a second steam heat release outlet; 69. a steam mixing main pipe; 610. an inner chamber; 611. a first heat absorption pipe; 612. a first heat-releasing pipe; 613. a second heat absorption pipe; 614. a second heat radiation pipe; 615. a valve;
71. a condenser; 72. a high and medium pressure cylinder; 73. a low vacuum low pressure cylinder; 74. a primary steam input line; 75. a steam supply input pipeline; 76. a water replenishing pipe;
81. a water supply pipe; 82. a water return pipe; 83. a water supply line of the end user heat supply network; 84. a water return pipeline of the end user heat supply network;
621. a first branch pipe;
641. a second branch pipe;
661. a third branch pipe;
681. a fourth branch pipe.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A multi-steam-source energy utilization system for efficiency improvement power generation and coupling heat supply by utilizing sintering waste heat comprises an electric furnace waste heat system 1, a converter waste heat system 2, a sintering waste heat system 3, a steel rolling heating furnace waste heat system 4, a steam energy storage tank 5, a heat exchange device 6, a power generation system 7 and a hot water energy storage tank 8; electric furnace waste heat steam in the electric furnace waste heat system 1 can enter the heat exchange device 6 to absorb heat or enter the steam energy storage tank 5 to store, converter waste heat steam in the converter waste heat system 2 can enter the heat exchange device 6 to absorb heat or enter the steam energy storage tank 5 to store, steam in the steam energy storage tank 5 can enter the heat exchange device 6 to absorb heat, steel rolling heating furnace waste heat steam in the steel rolling heating furnace waste heat system 4 can enter the heat exchange device 6 to absorb heat, sintering waste heat steam in the sintering waste heat system 3 can enter the heat exchange device 6 to release heat, the power generation system 7 comprises a steam turbine and a steam condenser 71, steam discharged from the heat exchange device 6 can enter the steam turbine of the power generation system 7 (drives the steam turbine to do work and generate power), steam discharged from the steam turbine can enter the steam condenser 71 to release heat, and water in the hot water energy storage tank 8 can enter the steam condenser 71 to absorb heat, as shown in fig. 1.
In this embodiment, the heat exchange device 6 has a first steam heat absorption inlet 61, a first steam heat absorption outlet 62, a first steam heat release inlet 63, a first steam heat release outlet 64, a second steam heat absorption inlet 65, a second steam heat absorption outlet 66, a second steam heat release inlet 67 and a second steam heat release outlet 68.
The steam entering from the first steam heat absorption inlet 61 absorbs heat in the heat exchange device 6 and then is discharged from the first steam heat absorption outlet 62, the steam entering from the first steam heat release inlet 63 releases heat in the heat exchange device 6 and then is discharged from the first steam heat release outlet 64, the steam entering from the second steam heat absorption inlet 65 absorbs heat in the heat exchange device 6 and then is discharged from the second steam heat absorption outlet 66, and the steam entering from the second steam heat release inlet 67 releases heat in the heat exchange device 6 and then is discharged from the second steam heat release outlet 68.
In this embodiment, the electric furnace waste heat system 1 includes an electric furnace waste heat steam supply line 11, the electric furnace waste heat steam generated by the electric furnace waste heat system 1 enters the electric furnace waste heat steam supply line 11, the converter waste heat system 2 includes a converter waste heat steam supply line 21, the converter waste heat steam generated by the converter waste heat system 2 enters the converter waste heat steam supply line 21, and the steel rolling heating furnace waste heat system 4 is connected to the second steam heat absorption inlet 65 of the heat exchange device 6 through the steel rolling heating furnace waste heat steam supply line 41.
In this embodiment, the electric furnace waste heat steam supply line 11 and the converter waste heat steam supply line 21 are connected to the first steam heat absorption inlet 61 of the heat exchange device 6 through a steam mixing main pipe 69, the sintering waste heat system 3 includes a sintering high-pressure steam production conveying line 31 and a sintering low-pressure steam production conveying line 32, the sintering high-pressure steam production conveying line 31 is connected to the first steam heat release inlet 63, and the sintering low-pressure steam production conveying line 32 is connected to the second steam heat release inlet 67. High-pressure waste heat steam generated by the sintering machine enters a sintering high-pressure steam production conveying pipeline 31, and low-pressure waste heat steam generated by the sintering machine enters a sintering low-pressure steam production conveying pipeline 32.
In this embodiment, a valve 615 is disposed on the steam mixing main pipe 69, and the valve 615 can adjust a gas flow rate of the steam mixing main pipe 69. The energy utilization system for multi-steam source efficiency improvement power generation and coupled heat supply by using sintering waste heat can comprise two steam energy storage tanks 5, wherein one steam energy storage tank 5 is connected with an electric furnace waste heat steam supply pipeline 11 through a first steam inlet and outlet pipe 51, and the other steam energy storage tank 5 is connected with a converter waste heat steam supply pipeline 21 through a second steam inlet and outlet pipe 52. The structure of the steam energy storage tank 5 is approximately the same as that of a common sealed gas storage tank or a liquid storage tank, and a good heat insulation layer is arranged on the outer side of the steam energy storage tank 5 to store heat energy in steam, as shown in fig. 1.
When the steam flow in the electric furnace waste heat steam supply pipeline 11 is large, the electric furnace waste heat steam in the electric furnace waste heat system 1 can enter the steam energy storage tank 5 and the heat exchange device 6, and when the steam flow in the electric furnace waste heat steam supply pipeline 11 is small, the steam stored in the steam energy storage tank 5 can enter the heat exchange device 6. When the steam flow in the converter waste heat steam supply pipeline 21 is large, the converter waste heat steam in the converter waste heat system 2 can enter the steam energy storage tank 5 and the heat exchange device 6, and when the steam flow in the converter waste heat steam supply pipeline 21 is small, the steam stored in the steam energy storage tank 5 can enter the heat exchange device 6. The steam energy storage tank 5 and the valve 615 are matched for use, so that the peak clipping and valley filling of intermittent waste heat resources such as an electric furnace, a converter and the like can be realized, the delivery is stable, and the quality of steam parameters is improved. In addition, a valve 615 may be provided on each of the other lines.
In this embodiment, the heat exchanger 6 is a waste heat boiler, and the heat source of the waste heat boiler is from a sintering machine, so the waste heat boiler can also be called a sintering waste heat boiler. The heat exchange device 6 may be a split structure, and the heat exchange device 6 includes two inner chambers 610, one inner chamber 610 is provided with a first heat absorption pipe 611 and a first heat release pipe 612, and the other inner chamber 610 is provided with a second heat absorption pipe 613 and a second heat release pipe 614. The first heat absorption pipe 611 and the second heat absorption pipe 613 may be evaporators of a waste heat boiler, as shown in fig. 1. Alternatively, the heat exchanging device 6 may also be an integrated structure, the heat exchanging device 6 includes an inner chamber 610, and the first heat absorbing pipe 611, the first heat releasing pipe 612, the second heat absorbing pipe 613, and the second heat releasing pipe 614 are disposed in the inner chamber 610, as shown in fig. 2.
In the present embodiment, the first steam heat absorption inlet 61 and the first steam heat absorption outlet 62 are respectively located at both ends of the first heat absorption pipe 611, the first steam heat release inlet 63 and the first steam heat release outlet 64 are respectively located at both ends of the first heat release pipe 612, the second steam heat absorption inlet 65 and the second steam heat absorption outlet 66 are respectively located at both ends of the second heat absorption pipe 613, and the second steam heat release inlet 67 and the second steam heat release outlet 68 are respectively located at both ends of the second heat release pipe 614. The waste heat system 4 of the steel rolling heating furnace is connected with the second steam heat absorption inlet 65 of the heat exchange device 6 through the waste heat steam supply pipeline 41 of the steel rolling heating furnace, and the waste heat steam of the steel rolling heating furnace generated by the waste heat system 4 of the steel rolling heating furnace enters the waste heat steam supply pipeline 41 of the steel rolling heating furnace.
In this embodiment, the steam turbine is an existing steam supplementing and condensing steam turbine, the steam supplementing and condensing steam turbine includes a high and medium pressure cylinder 72 and a low vacuum and low pressure cylinder 73 which are connected in sequence, a main steam input pipeline 74 is connected to the outside of a main steam inlet of the high and medium pressure cylinder 72, and a steam supplementing input pipeline 75 is connected to the outside of a steam supplementing inlet of the high and medium pressure cylinder 72; the first steam heat absorption outlet 62 is connected to the main steam input line 74 through a first branch pipe 621, the first steam heat release outlet 64 is connected to the main steam input line 74 through a second branch pipe 641, the second steam heat absorption outlet 66 is connected to the steam supply input line 75 through a third branch pipe 661, and the second steam heat release outlet 68 is connected to the steam supply input line 75 through a fourth branch pipe 681.
In this embodiment, the steam outlet of the high and medium pressure cylinder 72 is communicated with the steam inlet of the low and medium pressure cylinder 73, the condenser 71 comprises a heat releasing working medium inlet, a heat releasing working medium outlet, a heat absorbing working medium inlet and a heat absorbing working medium outlet, the steam outlet of the low and medium pressure cylinder 73 is communicated with the heat releasing working medium inlet of the condenser 71, and the heat releasing working medium outlet of the condenser 71 is externally connected with a water replenishing pipe 76. The condenser 71 can convert steam discharged from a steam outlet of the steam-supplementing and condensing turbine into water to be supplied to the exhaust-heat boiler for water supplement.
An outlet of the hot water energy storage tank 8 is connected with a heat absorption working medium inlet of the condenser 71 through a water supply pipe 81, an inlet of the hot water energy storage tank 8 is connected with a heat absorption working medium outlet of the condenser 71 through a water return pipe 82, the water supply pipe 81 is connected with a water supply pipeline 83 of a heat supply network of a tail end user, and the water return pipe 82 is connected with a water return pipeline 84 of the heat supply network of the tail end user. Utilize hot water energy storage tank 8 among the external supply hot water pipe network, temporarily store the abundant heat in the generating set circulating water, can be applied to the end user who discontinuously gets heat to increase the energy supply area that discontinuously gets heat user. The construction of the hot water accumulator tank 8 may be the same as that of the steam accumulator tank 5.
The working process of the energy utilization system with multiple steam sources for efficiency improvement and power generation and coupled heat supply by using sintering waste heat is described below.
When the steam flow in the electric furnace waste heat steam supply pipeline 11 is large, the electric furnace waste heat steam in the electric furnace waste heat system 1 enters the steam energy storage tank 5 for storage and the heat exchange device 6 for heat absorption, and when the steam flow in the electric furnace waste heat steam supply pipeline 11 is small, the steam stored in the steam energy storage tank 5 enters the heat exchange device 6 for heat absorption. When the steam flow in the converter waste heat steam supply pipeline 21 is large, the converter waste heat steam in the converter waste heat system 2 enters the steam energy storage tank 5 for storage and the heat exchange device 6 for heat absorption, and when the steam flow in the converter waste heat steam supply pipeline 21 is small, the steam stored in the steam energy storage tank 5 enters the heat exchange device 6 for heat absorption. The electric furnace waste heat steam and the converter waste heat steam which absorb heat in the heat exchange device 6 enter a main steam inlet of a high and medium pressure cylinder 72 of the steam-supplementing and condensing type steam turbine through a main steam input pipeline 74 to drive the steam-supplementing and condensing type steam turbine to do work and generate electricity.
The waste heat steam of the steel rolling heating furnace in the waste heat system 4 of the steel rolling heating furnace enters the heat exchange device 6 to absorb heat, and the waste heat steam of the steel rolling heating furnace after absorbing heat enters a steam supplementing inlet of a high and medium pressure cylinder 72 of the steam supplementing and condensing type steam turbine through a steam supplementing input pipeline 75 to drive the steam supplementing and condensing type steam turbine to do work and generate power.
High-pressure superheated steam (the pressure of the steam is about 1.6-2.6 MPa) generated by the sintering waste heat system 3 firstly enters the heat exchange device 6 through the sintering high-pressure steam-generating conveying pipeline 31 to release heat, and then enters a main steam inlet 72 of a high and medium pressure cylinder 72 of the steam-supplementing and condensing type steam turbine through a main steam input pipeline 74 to drive the steam-supplementing and condensing type steam turbine to do work and generate power. The low-pressure superheated steam (the pressure of the steam is about 0.3-0.8 MPa) generated by the sintering waste heat system 3 firstly enters the heat exchange device 6 for heat release, and then enters a steam supplementing inlet of a high and medium pressure cylinder 72 of the steam supplementing and condensing type steam turbine through a steam supplementing input pipeline 75 to drive the steam supplementing and condensing type steam turbine 71 to do work and generate power.
Steam discharged from the high and medium pressure cylinders 72 of the steam-supplementing and condensing steam turbine enters the low vacuum low pressure cylinder 73 of the steam-supplementing and condensing steam turbine to drive the steam-supplementing and condensing steam turbine 71 to do work and generate power, and the steam discharged from the low vacuum low pressure cylinder 73 of the steam-supplementing and condensing steam turbine enters the condenser 71 to release heat and then is discharged as condensed water.
The water in the hot water energy storage tank 8 can enter the condenser 71 to absorb heat and then returns to the hot water energy storage tank 8, the water in the hot water energy storage tank 8 can enter the water supply pipeline 83 of the heat supply network of the end user for heating of the end user as required, and the water in the water return pipeline 84 of the heat supply network of the end user can enter the hot water energy storage tank 8 to supply the hot water energy storage tank 8. Or the water in the end user heat supply network water return line 84 enters the condenser 71 to absorb heat and then returns to the end user heat supply network water supply line 83 for heating of end users.
The above description is only for the specific embodiments of the present invention, and the scope of the present invention can not be limited by the embodiments, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should still belong to the scope covered by the present patent. In addition, the utility model provides an between technical feature and the technical feature, between technical feature and technical scheme, technical scheme and technical scheme, embodiment and the embodiment all can the independent assortment use.
Claims (10)
1. The energy utilization system is characterized in that the energy utilization system for multi-steam source utilization of sintering waste heat to raise efficiency, generate power and supply heat in a coupling mode comprises an electric furnace waste heat system (1), a converter waste heat system (2), a sintering waste heat system (3), a steel rolling heating furnace waste heat system (4), a steam energy storage tank (5), a heat exchange device (6), a power generation system (7) and a hot water energy storage tank (8);
electric furnace waste heat steam in the electric furnace waste heat system (1) can enter a heat exchange device (6) to absorb heat or enter a steam energy storage tank (5) to be stored, converter waste heat steam in the converter waste heat system (2) can enter the heat exchange device (6) to absorb heat or enter the steam energy storage tank (5) to be stored, steam in the steam energy storage tank (5) can enter the heat exchange device (6) to absorb heat, steel rolling heating furnace waste heat steam in the steel rolling heating furnace waste heat system (4) can enter the heat exchange device (6) to absorb heat, sintering waste heat steam in the sintering waste heat system (3) can enter the heat exchange device (6) to release heat, a power generation system (7) comprises a steam turbine and a condenser (71), steam discharged by the heat exchange device (6) can enter the steam turbine of the power generation system (7), steam discharged by the steam turbine can enter the condenser (71) to release heat, and water in the hot water energy storage tank (8) can enter the condenser (71) to absorb heat.
2. The energy utilization system with multiple steam sources for generating electricity by using sintering waste heat and coupling to supply heat according to claim 1, characterized in that the heat exchange device (6) comprises a first steam heat absorption inlet (61), a first steam heat absorption outlet (62), a first steam heat release inlet (63), a first steam heat release outlet (64), a second steam heat absorption inlet (65), a second steam heat absorption outlet (66), a second steam heat release inlet (67) and a second steam heat release outlet (68).
3. The energy utilization system for power generation by utilizing sintering waste heat and coupled heat supply by utilizing multiple steam sources as claimed in claim 2 is characterized in that the electric furnace waste heat system (1) comprises an electric furnace waste heat steam supply pipeline (11), the converter waste heat system (2) comprises a converter waste heat steam supply pipeline (21), the electric furnace waste heat steam supply pipeline (11) and the converter waste heat steam supply pipeline (21) are connected with a first steam heat absorption inlet (61) of the heat exchange device (6) through a steam mixing main pipe (69), and the steel rolling heating furnace waste heat system (4) is connected with a second steam heat absorption inlet (65) of the heat exchange device (6) through a steel rolling heating furnace waste heat steam supply pipeline (41).
4. The energy utilization system for generating power by utilizing sintering waste heat through efficiency improvement and coupling heat supply by utilizing multiple steam sources as claimed in claim 2, wherein the sintering waste heat system (3) comprises a sintering high-pressure steam production conveying pipeline (31) and a sintering low-pressure steam production conveying pipeline (32), the sintering high-pressure steam production conveying pipeline (31) is connected with the first steam heat release inlet (63), and the sintering low-pressure steam production conveying pipeline (32) is connected with the second steam heat release inlet (67).
5. The energy utilization system for multi-steam source efficiency improvement power generation and coupled heat supply by using sintering waste heat according to claim 3, characterized in that the energy utilization system for multi-steam source efficiency improvement power generation and coupled heat supply by using sintering waste heat comprises two steam energy storage tanks (5), one steam energy storage tank (5) is connected with an electric furnace waste heat steam supply pipeline (11) through a first steam inlet and outlet pipe (51), and the other steam energy storage tank (5) is connected with a converter waste heat steam supply pipeline (21) through a second steam inlet and outlet pipe (52).
6. The energy utilization system for generating power by using sintering waste heat and supplying heat in a coupling manner according to claim 2, wherein the heat exchange device (6) is a waste heat boiler, an inner chamber (610) is arranged in the heat exchange device (6), and a first heat absorption pipe (611), a first heat release pipe (612), a second heat absorption pipe (613) and a second heat release pipe (614) are arranged in the inner chamber (610).
7. The energy utilization system for generating electricity by using sintering waste heat through multi-steam source and coupling heat supply according to claim 6, wherein a first steam heat absorption inlet (61) and a first steam heat absorption outlet (62) are respectively located at two ends of a first heat absorption pipe (611), a first steam heat release inlet (63) and a first steam heat release outlet (64) are respectively located at two ends of a first heat release pipe (612), a second steam heat absorption inlet (65) and a second steam heat absorption outlet (66) are respectively located at two ends of a second heat absorption pipe (613), and a second steam heat release inlet (67) and a second steam heat release outlet (68) are respectively located at two ends of a second heat release pipe (614).
8. The energy utilization system for generating power by using sintering waste heat through multiple steam sources and supplying heat in a coupling mode according to claim 2, wherein the steam turbine is a steam-supplementing and condensing type steam turbine, the steam-supplementing and condensing type steam turbine comprises a high-medium pressure cylinder (72) and a low-vacuum low-pressure cylinder (73) which are sequentially connected, a main steam input pipeline (74) is connected to the outside of a main steam inlet of the high-medium pressure cylinder (72), and a steam-supplementing input pipeline (75) is connected to the outside of a steam-supplementing inlet of the high-medium pressure cylinder (72); the first steam heat absorption outlet (62) is connected with the main steam input pipeline (74) through a first branch pipe (621), the first steam heat release outlet (64) is connected with the main steam input pipeline (74) through a second branch pipe (641), the second steam heat absorption outlet (66) is connected with the steam supplement input pipeline (75) through a third branch pipe (661), and the second steam heat release outlet (68) is connected with the steam supplement input pipeline (75) through a fourth branch pipe (681).
9. The energy utilization system for power generation by using multiple steam sources and coupled heat supply by using sintering waste heat through efficiency improvement according to claim 8, characterized in that a steam outlet of a high-medium pressure cylinder (72) is communicated with a steam inlet of a low-vacuum low-pressure cylinder (73), a condenser (71) comprises a heat-releasing working medium inlet, a heat-releasing working medium outlet, a heat-absorbing working medium inlet and a heat-absorbing working medium outlet, the steam outlet of the low-vacuum low-pressure cylinder (73) is communicated with the heat-releasing working medium inlet of the condenser (71), and a water replenishing pipe (76) is connected to the heat-releasing working medium outlet of the condenser (71).
10. The energy utilization system for generating power by utilizing sintering waste heat and supplying heat in a coupling manner according to claim 9, wherein an outlet of the hot water energy storage tank (8) is connected with an inlet of a heat absorption working medium of the condenser (71) through a water supply pipe (81), an inlet of the hot water energy storage tank (8) is connected with an outlet of the heat absorption working medium of the condenser (71) through a water return pipe (82), the water supply pipe (81) is connected with a water supply pipeline (83) of an end user heat supply network, and the water return pipe (82) is connected with a water return pipeline (84) of the end user heat supply network.
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