CN220398257U - Shaft furnace type sintering waste heat recovery coupling solar power generation system - Google Patents
Shaft furnace type sintering waste heat recovery coupling solar power generation system Download PDFInfo
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- CN220398257U CN220398257U CN202321954605.5U CN202321954605U CN220398257U CN 220398257 U CN220398257 U CN 220398257U CN 202321954605 U CN202321954605 U CN 202321954605U CN 220398257 U CN220398257 U CN 220398257U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 50
- 238000011084 recovery Methods 0.000 title claims abstract description 26
- 238000005245 sintering Methods 0.000 title claims abstract description 26
- 238000010248 power generation Methods 0.000 title claims abstract description 23
- 230000008878 coupling Effects 0.000 title claims abstract description 14
- 238000010168 coupling process Methods 0.000 title claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 14
- 230000001502 supplementing effect Effects 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000005338 heat storage Methods 0.000 claims abstract description 27
- 238000005286 illumination Methods 0.000 claims abstract description 9
- 239000013589 supplement Substances 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a shaft furnace sintering waste heat recovery coupling solar power generation system, which comprises a shaft furnace, a waste heat boiler, a steam supplementing preheater, a steam supplementing heater, a heat storage tank, a solar heat collecting device and a solar heat exchanger; air is heated by the shaft furnace and then is sent to the waste heat boiler to heat the feed water, the feed water is heated to steam and then is sent to the steam turbine to do work, and part of the feed water is sent to the steam turbine steam supplementing port to supplement steam after being heated by the steam supplementing preheater, the steam supplementing heater and the solar heat exchanger; when illumination exists, the solar heat collecting device is respectively communicated with the solar heat exchanger and the heat storage tank, a part of heat heats and supplements steam, and a part of heat is stored in the heat storage tank; when no illumination exists, the heat of the heat storage tank is utilized to heat the steam supplementing, so that the steam supplementing temperature of the steam turbine can be effectively improved, the work efficiency of the steam turbine is improved, and the power generation efficiency of the system is improved.
Description
Technical Field
The utility model belongs to the technical field of waste heat utilization, and particularly relates to a sintering waste heat coupling solar power generation system.
Background
The iron and steel industry is an important basic industry in China, a large amount of waste heat resources are generated in the production process, sintering is the second energy consumption process of iron making, and the heat brought by the sintered ore accounts for about 65% -71% of the total waste heat of the sintering process, so that the efficient recycling of the waste heat of the sintering process has important significance for effectively reducing the energy consumption of the iron and steel industry and improving the utilization rate of energy sources. At present, most of sintering waste heat recovery modes adopt a belt cooler or a ring cooler, but the belt cooler and the ring cooler have the problems of high air leakage rate, incomplete waste heat recovery and the like when waste heat is recovered, in order to solve the problems, a shaft furnace type waste heat recovery system for the sintering mine waste heat is developed by domestic research teams, the shaft furnace structure overcomes the problems of high air leakage rate and incomplete waste heat recovery of the traditional ring cooler, and the shaft furnace type waste heat recovery system has a better energy-saving effect.
At present, a sinter shaft furnace waste heat recovery system mainly comprises a flash evaporation system and a double-pressure system; but the vapor supplementing pressure and temperature of the flash evaporation system and the double-pressure system are low, the temperature and pressure of main vapor are reduced, and the power generation efficiency is low; in addition, the solar energy has the excellent characteristics of wide distribution, abundant reserves, cleanness, regeneration and the like, and is regarded as one of the most promising green energy sources. Therefore, solar energy can be coupled into the sintering waste heat recovery system, and the power generation efficiency of the system is improved.
Based on the above, the utility model provides a shaft furnace type sintering waste heat recovery coupling solar power generation system which is used for improving the power generation rate of a sintering ore shaft furnace waste heat recovery system.
Disclosure of Invention
The utility model aims to provide a shaft furnace type sintering waste heat recovery coupling solar power generation system, which is used for recovering and using sintering waste heat resources in a cascade utilization mode according to the temperature of energy sources, and is used for solving the technical problem of low power generation efficiency of the sintering waste heat recovery system.
Based on the above, the technical scheme of the utility model provides a shaft furnace type sintering waste heat recovery coupling solar power generation system, which comprises a shaft furnace, a primary dust remover, a waste heat boiler, a steam turbine, a condenser, a condensate pump, a deaerator, a water supply pump, a water supply preheater, a draught fan, a secondary dust remover, an economizer, an evaporator, a steam drum, a superheater, a steam supplementing preheater, a steam supplementing heater, a heat storage tank, a solar heat collector, a solar heat exchanger, a first three-way valve and a second three-way valve; the air outlet of the shaft furnace is sequentially connected with the primary dust collector and the air inlet of the waste heat boiler through pipelines, and the air outlet of the waste heat boiler is sequentially connected with the secondary dust collector, the induced draft fan, the water supply preheater and the air inlet of the shaft furnace through pipelines; the connection of the water supply and steam pipelines for recovering the waste heat is as follows: the exhaust steam outlet of the steam turbine is connected with the inlet of a condenser, the outlet of the condenser is connected with the water supply inlet of a deaerator through a condensate pump, the water supply outlet of the deaerator is connected with the water supply inlet of a water supply preheater through a water supply pump, the water supply outlet of the water supply preheater is divided into two paths through a three-way valve, one path is connected with the inlet of an economizer, the other path is connected with the inlet of a steam supplementing preheater, the outlet of the economizer is connected with the water supply inlet of a steam drum, the steam drum is connected with the inlet of an evaporator through a downcomer, the outlet of the evaporator is connected with the steam inlet of the steam drum, the steam outlet of the steam drum is connected with the inlet of a superheater, and the outlet of the superheater is connected with the main inlet of the steam turbine; the outlet of the steam supplementing preheater is connected with the inlet of the steam supplementing heater, the outlet of the steam supplementing heater is connected with the inlet of the solar heat exchanger, and the outlet of the solar heat exchanger is connected with the steam supplementing port of the steam turbine; the steam turbine is provided with two stages of steam extraction ports, the first stage of steam extraction is connected with a second inlet of the steam supplementing heater, and a second outlet of the steam supplementing heater is connected with the deaerator; the second stage extraction steam of the steam turbine is connected with a steam inlet of the deaerator; the outlet of the solar heat collection device is divided into two paths through a first three-way valve, one path of the outlet is connected with the second inlet of the solar heat exchanger, and the second outlet of the solar heat exchanger is connected with the inlet of the solar heat collection device through a second three-way valve; the other path is connected with one end of the heat storage tank, and the other end of the heat storage tank is connected with the inlet of the solar heat collection device through a second three-way valve.
When illumination exists, the three-way valve is regulated to enable the solar heat collection device to be respectively communicated with the solar heat exchanger and the heat storage tank, heat conduction oil is divided into two paths through the first three-way valve after absorbing heat in the solar heat collection device, one path of heat conduction oil flows into the solar heat exchanger for heating and supplementing steam, and the heat is released and then returns to the solar heat collection device to continuously absorb heat; the other path enters a heat storage tank to store heat; when no illumination exists, the three-way valve is regulated to disconnect the solar heat collecting device from the solar heat exchanger, the heat storage tank is communicated with the solar heat exchanger, and the heat of the heat storage tank is utilized to heat and supplement steam.
The superheater is arranged at the uppermost part of the waste heat boiler, the evaporator is arranged below the superheater, the economizer is arranged below the evaporator, and the steam supplementing preheater is arranged in parallel with the lower half section of the economizer.
The superheater, the evaporator and the economizer are arranged in parallel, and the steam supplementing preheater is arranged in a horizontal mode.
Sinter is fed from the top of the shaft furnace, and after heat release, the sinter is conveyed out through an outlet at the bottom of the shaft furnace and conveyed by a conveyor belt.
According to the utility model, the steam supplementing heater and the solar device are arranged, so that the steam supplementing temperature of the steam turbine can be effectively improved, the work efficiency of the steam turbine is improved, and the power generation efficiency of the system is improved; meanwhile, the heat storage tank is arranged to effectively store solar heat and is used for solving the problem of low temperature of the steam supplementing temperature when no illumination exists, so that the power generation efficiency of the system is improved.
Drawings
Fig. 1 is a schematic diagram of a shaft furnace sintering waste heat recovery coupled solar power generation system.
1-shaft furnace, 2-primary dust collector, 3-waste heat boiler, 4-steam turbine, 5-steam supplementing heater, 6-condenser, 7-condensate pump, 8-deaerator, 9-water feeding pump, 10-water feeding preheater, 11-induced draft fan, 12-secondary dust collector, 13-economizer, 14-steam supplementing preheater, 15-evaporator, 16-steam drum, 17-superheater, 18-heat storage tank, 19-solar heat collector, 20-solar heat exchanger, 21-first three-way valve, 22-second three-way valve.
Detailed Description
The utility model provides a shaft furnace type sintering waste heat recovery coupling solar power generation system, which is described in detail by means of embodiments with reference to the accompanying drawings.
The utility model provides a shaft furnace sintering waste heat recovery coupling solar power system, includes shaft furnace 1, primary dust remover 2, exhaust-heat boiler 3, steam turbine 4, condenser 6, condensate pump 7, deaerator 8, feed water pump 9, feed water preheater 10, draught fan 11, secondary dust remover 12, economizer 13, evaporimeter 15, steam drum 16, superheater 17, make-up steam preheater 14, make-up steam heater 5, heat storage tank 18, solar heat collector 19, solar heat exchanger 20, first three-way valve 21, second three-way valve 22; the hot air after heat exchange in the shaft furnace 1 enters a primary dust remover 2 through an outlet of the shaft furnace 1 to remove dust, enters a waste heat boiler 3 to release heat and heat water supply after dust removal, sequentially enters a secondary dust remover 12 to remove dust through a pipeline after the air releases heat, enters a water supply preheater 10 through a draught fan 11 to further utilize waste heat, returns to the shaft furnace 1, and enters a steam turbine 4 to apply work after the water supply is heated by the waste heat boiler 3.
The exhaust steam outlet of the steam turbine 4 is connected with the inlet of the condenser 6, the outlet of the condenser 6 is connected with the water supply inlet of the deaerator 8 through the condensate pump 7, the water supply outlet of the deaerator 8 is connected with the water supply inlet of the water supply preheater 10 through the water supply pump 9, the water supply outlet of the water supply preheater 10 is divided into two paths through a three-way valve, one path is used as main water supply to enter the economizer, the other path is connected with the steam supplementing preheater 14 and used for supplementing steam of the steam turbine, the outlet of the economizer 13 is connected with the water supply inlet of the steam drum 16, the steam drum 16 is connected with the inlet of the evaporator 15 through a down pipe, the outlet of the evaporator 15 is connected with the steam inlet of the steam drum 16, the steam outlet of the steam drum 16 is connected with the inlet of the superheater 17, and the outlet of the superheater 17 is connected with the main steam inlet of the steam turbine 4; the outlet of the steam supplementing preheater 14 is connected with the inlet of the steam supplementing heater 5, the outlet of the steam supplementing heater 5 is connected with the inlet of the solar heat exchanger 20, and the outlet of the solar heat exchanger 20 is connected with the steam supplementing port of the steam turbine 4; the steam turbine 4 is provided with two stages of steam extraction ports, one stage of steam extraction is connected with a second inlet of the steam supplementing heater 5, and a second outlet of the steam supplementing heater 5 is connected with the deaerator 8; the second stage extraction steam of the steam turbine 4 is connected with a steam inlet of the deaerator 8; the outlet of the solar heat collection device 19 is divided into two paths through a first three-way valve 21, one path is connected with the second inlet of the solar heat exchanger 20, and the second outlet of the solar heat exchanger 20 is connected with the inlet of the solar heat collection device 19 through a second three-way valve 22; the other way is connected with one end of the heat storage tank 18, and the other end of the heat storage tank 18 is connected with the inlet of the solar heat collection device 19 through a second three-way valve 22.
When illumination exists, the three-way valve is regulated to enable the solar heat collection device 19 to be respectively communicated with the solar heat exchanger 20 and the heat storage tank 18, heat conduction oil absorbs heat in the solar heat collection device 19 and then is divided into two paths through the first three-way valve 21, one path of heat conduction oil flows into the solar heat exchanger 20 for heating and supplementing steam, and returns to the solar heat collection device 19 for continuously absorbing heat after heat is released; the other path enters the heat storage tank 18 to store heat; when no illumination exists, the three-way valve is regulated to disconnect the solar heat collecting device from the solar heat exchanger 20, the heat storage tank 18 is communicated with the solar heat exchanger 20, and the heat of the heat storage tank 18 is utilized to heat the steam supplement. In addition, the opening of the three-way valve can be adjusted according to the power generation amount demand and the sinter amount. The superheater 17 is arranged at the uppermost part of the waste heat boiler, the evaporator 15 is arranged below the superheater 17, the economizer 13 is arranged below the evaporator 15, and the steam supplementing preheater 14 is arranged in parallel with the lower half section of the economizer 13.
The superheater 17, the evaporator 15, the economizer 13 and the steam supplementing preheater 14 are all arranged in a horizontal and in-line mode.
The system can effectively improve the temperature of the steam supplementing and the power generation capacity of the sinter waste heat recovery system.
As described above, the present utility model can be preferably implemented. Simple alterations and substitutions will occur to those skilled in the art in light of the teachings of the present utility model and are intended to be within the scope of the utility model.
Claims (5)
1. The utility model provides a shaft furnace sintering waste heat recovery coupling solar power system, including shaft furnace (1), primary dust remover (2), exhaust-heat boiler (3), steam turbine (4), condenser (6), condensate pump (7), deaerator (8), feed pump (9), feed water preheater (10), draught fan (11), secondary dust remover (12), economizer (13), evaporimeter (15), steam drum (16), superheater (17), characterized by still includes, make-up steam preheater (14), make-up steam heater (5), heat storage tank (18), solar heat collector (19), solar heat exchanger (20), first three-way valve (21), second three-way valve (22);
the air outlet of the shaft furnace (1) is sequentially connected with the air inlets of the primary dust collector (2) and the waste heat boiler (3) through pipelines, the air outlet of the waste heat boiler (3) is sequentially connected with the air inlet of the secondary dust collector (12), the induced draft fan (11), the water supply preheater (10) and the air inlet of the shaft furnace (1) through pipelines;
the connection of the water supply and steam pipelines for recovering the waste heat is as follows: the exhaust steam outlet of the steam turbine (4) is connected with the inlet of a condenser (6), the outlet of the condenser (6) is connected with the water inlet of a deaerator (8) through a condensate pump (7), the water inlet outlet of the deaerator (8) is connected with the water inlet of a water supply preheater (10) through a water supply pump (9), the water inlet outlet of the water supply preheater (10) is divided into two paths through a three-way valve, one path is connected with the inlet of an economizer (13), the other path is connected with the inlet of a steam supplementing preheater (14), the outlet of the economizer (13) is connected with the water inlet of a steam drum (16), the steam drum (16) is connected with the inlet of an evaporator (15) through a descending pipe, the outlet of the evaporator (15) is connected with the steam inlet of the steam drum (16), the steam outlet of the steam drum (16) is connected with the inlet of a superheater (17), and the outlet of the superheater (17) is connected with the main steam inlet of the steam turbine (4); the outlet of the steam supplementing preheater (14) is connected with the inlet of the steam supplementing heater (5), the outlet of the steam supplementing heater (5) is connected with the inlet of the solar heat exchanger (20), and the outlet of the solar heat exchanger (20) is connected with the steam supplementing port of the steam turbine (4);
the steam turbine (4) is provided with two stages of steam extraction ports, one stage of steam extraction is connected with a second inlet of the steam supplementing heater (5), and a second outlet of the steam supplementing heater (5) is connected with the deaerator (8); the second-stage steam extraction of the steam turbine (4) is connected with a steam inlet of the deaerator (8); the outlet of the solar heat collector (19) is divided into two paths through a first three-way valve (21), one path is connected with the second inlet of the solar heat exchanger (20), and the second outlet of the solar heat exchanger (20) is connected with the inlet of the solar heat collector (19) through a second three-way valve (22); the other path is connected with one end of a heat storage tank (18), and the other end of the heat storage tank (18) is connected with an inlet of a solar heat collection device (19) through a second three-way valve (22).
2. The shaft furnace sintering waste heat recovery coupling solar power generation system according to claim 1, wherein the shaft furnace sintering waste heat recovery coupling solar power generation system is characterized in that: when illumination exists, the three-way valve is regulated to enable the solar heat collection device (19) to be respectively communicated with the solar heat exchanger (20) and the heat storage tank (18), heat conduction oil absorbs heat in the solar heat collection device (19) and then is divided into two paths through the first three-way valve (21), one path of heat conduction oil flows into the solar heat exchanger (20) for heating and supplementing steam, and returns to the solar heat collection device (19) for continuously absorbing heat after heat is released; the other path enters a heat storage tank (18) to store heat; when no illumination exists, the three-way valve is regulated to disconnect the solar heat collection device from the solar heat exchanger (20), the heat storage tank (18) is communicated with the solar heat exchanger (20), and the heat of the heat storage tank (18) is utilized to heat the steam supplement.
3. The shaft furnace sintering waste heat recovery coupled solar power generation system according to claim 2, wherein: the superheater (17) is arranged at the uppermost part of the waste heat boiler, the evaporator (15) is arranged below the superheater (17), the economizer (13) is arranged below the evaporator (15), and the steam supplementing preheater (14) is arranged in parallel with the lower half section of the economizer (13).
4. A shaft furnace sintering waste heat recovery coupled solar power system according to claim 3, characterized in that: the superheater (17), the evaporator (15), the economizer (13) and the steam supplementing preheater (14) are all arranged horizontally.
5. The shaft furnace sintering waste heat recovery coupling solar power generation system according to claim 4, wherein the shaft furnace sintering waste heat recovery coupling solar power generation system is characterized in that: the superheater (17), the evaporator (15), the economizer (13) and the steam supplementing preheater (14) are all arranged in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321954605.5U CN220398257U (en) | 2023-07-25 | 2023-07-25 | Shaft furnace type sintering waste heat recovery coupling solar power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202321954605.5U CN220398257U (en) | 2023-07-25 | 2023-07-25 | Shaft furnace type sintering waste heat recovery coupling solar power generation system |
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| CN220398257U true CN220398257U (en) | 2024-01-26 |
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| CN202321954605.5U Active CN220398257U (en) | 2023-07-25 | 2023-07-25 | Shaft furnace type sintering waste heat recovery coupling solar power generation system |
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| Country | Link |
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| CN (1) | CN220398257U (en) |
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2023
- 2023-07-25 CN CN202321954605.5U patent/CN220398257U/en active Active
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