CN213270008U - Cold quick-witted three-section waste heat recovery power generation system of ring - Google Patents
Cold quick-witted three-section waste heat recovery power generation system of ring Download PDFInfo
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- CN213270008U CN213270008U CN202021444233.8U CN202021444233U CN213270008U CN 213270008 U CN213270008 U CN 213270008U CN 202021444233 U CN202021444233 U CN 202021444233U CN 213270008 U CN213270008 U CN 213270008U
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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
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Abstract
The utility model discloses a cold quick-witted three-section waste heat recovery power generation system of ring, include: the ring cooling machine comprises a first cooling section, a second cooling section and a third cooling section, a smoke collecting hood is arranged above the third cooling section, and the organic Rankine power generation system comprises an evaporator, an expansion machine, a generator, a condenser and a working medium pump. The flue gas directly exchanges heat with the organic working medium in the evaporator, or hot water is prepared by utilizing the flue gas, the hot water exchanges heat with the organic working medium in the evaporator, and the flue gas waste heat is converted into electric energy by virtue of an organic Rankine power generation system, so that the waste heat utilization rate of the circular cooler is improved, and the energy waste is reduced.
Description
Technical Field
The utility model relates to a steel mill waste heat recovery field, in particular to cold quick-witted three-section waste heat recovery power generation system of ring.
Background
The circular cooler is a circular cooler for short and is used for effectively cooling the sinter discharged from the sintering machine. The circular cooler trolley drives the sinter to move circularly, air is blown in from the lower part of the sinter, and the air and the sinter exchange heat. Generally speaking, the circular cooler has three cooling sections, the temperature of the flue gas generated by each cooling section is reduced in turn, wherein the temperature of the flue gas generated by the third cooling section is the lowest, about 180-.
SUMMERY OF THE UTILITY MODEL
In order to improve the utilization efficiency of the cold quick-witted low temperature waste heat of ring, the utility model provides a cold quick-witted three-section waste heat recovery power generation system of ring.
The utility model provides an among the first technical scheme, cold quick-witted three-section waste heat recovery power generation system of ring, include:
the circular cooler comprises a first cooling section, a second cooling section and a third cooling section, and a smoke collecting hood is arranged above the third cooling section;
the organic Rankine power generation system comprises an evaporator, an expander, a generator, a condenser and a working medium pump, wherein a waste heat inflow port of the evaporator is communicated with a smoke collecting hood, and smoke can enter the evaporator from the waste heat inflow port and exchange heat with an organic working medium in the evaporator.
The effect of the present embodiment is: the low-temperature flue gas of the third cooling section of the circular cooler is collected and guided into an evaporator of the organic Rankine power generation system, the flue gas directly exchanges heat with an organic working medium in the evaporator, the organic working medium absorbs heat from the flue gas in the evaporator to generate steam with certain pressure and temperature, and the steam enters an expansion machine to expand and do work, so that a generator is driven to operate and generate power, waste heat in the low-temperature flue gas is recovered and converted into electric energy, and energy waste is avoided.
In some embodiments, the waste heat stream outlet of the evaporator is connected to a dust removal device. The flue gas flows out from the residual heat outflow port of the evaporator and then enters the dust removal device for dust removal.
In some embodiments, the water outlet of the cooling tower is connected with the inlet of the cooling water circulating pump, and the outlet of the cooling water circulating pump is connected with the cooling water inlet of the condenser.
In some embodiments, the system further comprises a liquid storage tank, the organic working medium outlet of the condenser is connected with the inlet of the liquid storage tank, and the outlet of the liquid storage tank is connected with the inlet of the working medium pump.
The utility model provides an among the second technical scheme, cold quick-witted three-section waste heat recovery power generation system of ring, include:
the circular cooler comprises a first cooling section, a second cooling section and a third cooling section, and a smoke collecting hood is arranged above the third cooling section;
the heat exchanger comprises a flue gas inlet and a hot water outlet, and the flue gas inlet is communicated with the smoke collecting hood; and
the organic Rankine power generation system comprises an evaporator, an expander, a generator, a condenser and a working medium pump, wherein a waste heat inflow port of the evaporator is communicated with a hot water outlet of a heat exchanger;
the flue gas can enter the heat exchanger and exchange heat with water in the heat exchanger to form hot water, and the hot water enters the evaporator and exchanges heat with the organic working medium in the evaporator.
The effect of the present embodiment is: collecting the low-temperature flue gas at the third cooling section of the circular cooler, introducing the flue gas into a heat exchanger, exchanging heat between the flue gas and water in the heat exchanger to prepare hot water with the temperature of more than 80 ℃, and enabling the hot water to enter an evaporator as waste heat flow to exchange heat with an organic working medium in the evaporator. The organic working medium generates steam with certain pressure and temperature from the flue gas in the evaporator, and the steam enters the expansion machine to expand and do work, so that the generator is driven to operate and generate electricity, the waste heat in the low-temperature flue gas is recovered and converted into electric energy, and the energy waste is avoided.
In some embodiments, the heat exchanger further comprises a flue gas outlet, and the flue gas outlet is connected with a dust removal device. The flue gas flows out from the flue gas outlet of the heat exchanger and then enters the dust removal device for dust removal.
In some embodiments, the water outlet of the cooling tower is connected with the inlet of the cooling water circulating pump, and the outlet of the cooling water circulating pump is connected with the cooling water inlet of the condenser.
In some embodiments, the system further comprises a liquid storage tank, the organic working medium outlet of the condenser is connected with the inlet of the liquid storage tank, and the outlet of the liquid storage tank is connected with the inlet of the working medium pump.
Drawings
Fig. 1 is a schematic structural diagram of a three-section waste heat recovery power generation system of a circular cooler according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a three-section waste heat recovery power generation system of a circular cooler according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a three-section waste heat recovery power generation system of a circular cooler according to another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to improve the utilization efficiency of the cold machine 1 low temperature waste heat of ring, the utility model provides a cold machine three-section waste heat recovery power generation system of ring. The utility model discloses an in various embodiments, all adopt organic rankine low temperature power generation technique to change the waste heat of the gas of discharging fume of cold machine 1 third cooling zone 4 into the electric energy to improve the utilization efficiency of the cold machine 1 waste heat of ring.
In the first embodiment provided by the present invention, please refer to fig. 1, the circular cooler three-section waste heat recovery power generation system includes:
the circular cooler 1 is characterized in that the circular cooler 1 comprises a first cooling section 2, a second cooling section 3 and a third cooling section 4, and a smoke collecting hood 5 is arranged above the third cooling section 4;
the organic Rankine power generation system 6 comprises an evaporator 7, an expander 8, a generator 9, a condenser 10 and a working medium pump 11, wherein a waste heat inflow port of the evaporator 7 is communicated with the smoke collecting hood 5, and smoke can enter the evaporator 7 from the waste heat inflow port and exchange heat with an organic working medium in the evaporator 7.
The organic working medium side of the evaporator 7, the expander 8 and the organic working medium side of the condenser 10 are connected with the working medium pump 11 in a closed loop mode to form a closed loop in which the organic working medium flows, and a turbine shaft of the expander 8 is connected with a rotor of the generator 9. The evaporator 7 comprises a waste heat inflow port, a waste heat outflow port, an organic working medium inlet and an organic working medium outlet. In the embodiment, the residual heat flow is flue gas from the smoke collecting hood 5, and the flue gas directly enters the evaporator 7 from the residual heat inflow port, fully exchanges heat with the organic working medium entering the evaporator 7 from the organic working medium inlet, and then flows out from the residual heat outflow port. The low-temperature flue gas of the third cooling section 4 of the circular cooler 1 is collected and is introduced into an evaporator 7 of an organic Rankine power generation system 6, the flue gas directly exchanges heat with an organic working medium in the evaporator 7, the organic working medium absorbs heat from the flue gas in the evaporator 7 to generate steam with certain pressure and temperature, the steam enters an expander 8 to expand and do work, so that a generator 9 is driven to operate and generate power, the waste heat in the low-temperature flue gas is recovered and converted into electric energy, and energy waste is avoided.
The residual heat outflow port of the evaporator 7 is connected with a dust removing device 12. The flue gas flows out from the residual heat outflow port of the evaporator 7 and enters the dust removal device 12 for dust removal.
The condenser 10 comprises an organic working medium inlet, an organic working medium outlet, a cooling water inlet and a cooling water outlet. Further, referring to fig. 2, the organic rankine power generation system 6 further includes a cooling tower 15 and a cooling water circulation pump 16. The water outlet of the cooling tower 15 is connected to the inlet of a cooling water circulation pump 16, and the outlet of the cooling water circulation pump 16 is connected to the cooling water inlet of the condenser 10.
In some embodiments, the device further comprises a liquid storage tank 17, wherein the organic working medium outlet of the condenser 10 is connected with the inlet of the liquid storage tank 17, and the outlet of the liquid storage tank 17 is connected with the inlet of the working medium pump 11.
In a second embodiment provided by the present invention, referring to fig. 3, a three-section waste heat recovery power generation system of a circular cooler includes:
the circular cooler 1 is characterized in that the circular cooler 1 comprises a first cooling section 2, a second cooling section 3 and a third cooling section 4, and a smoke collecting hood 5 is arranged above the third cooling section 4;
the heat exchanger 13, the heat exchanger 13 includes the entrance of the flue gas and hot water outlet, the entrance of the flue gas communicates with fume collecting hood 5; and
the organic Rankine power generation system 6 comprises an evaporator 7, an expander 8, a generator 9, a condenser 10 and a working medium pump 11, wherein a waste heat inlet of the evaporator 7 is communicated with a hot water outlet of a heat exchanger 13;
the flue gas can enter the heat exchanger 13 and exchange heat with water in the heat exchanger 13 to form hot water, and the hot water enters the evaporator 7 and exchanges heat with the organic working medium in the evaporator 7.
The evaporator 7, the expander 8, the condenser 10 and the working medium pump 11 are sequentially connected to form a closed loop in which the organic working medium flows, and the expander 8 is connected with the generator 9. The evaporator 7 comprises a waste heat inflow port, a waste heat outflow port, an organic working medium inlet and an organic working medium outlet. The heat exchanger 13 comprises a flue gas inlet, a flue gas outlet, a hot water outlet and a cold water inlet. The smoke collecting hood 5 collects low-temperature smoke of the third cooling section 4, the low-temperature smoke is introduced into the heat exchanger 13, the smoke flows out from a smoke outlet of the heat exchanger 13 after being subjected to sufficient heat exchange with cold water entering from a cold water inlet of the heat exchanger 13, water in the heat exchanger 13 is heated to a temperature of more than 80 ℃, the hot water flows out from a hot water outlet of the heat exchanger 13, the hot water enters the evaporator 7 from a waste heat inflow port of the evaporator 7 again, and after the hot water is subjected to sufficient heat exchange with an organic working medium in the evaporator 7, the cooled water flows out from a waste heat outflow port of the evaporator 7. The waste heat outflow opening of the evaporator 7 can be connected to the cold water inlet of the heat exchanger 13, between which a circulating water pump 14 can be arranged, so that the cold water can flow back into the heat exchanger 13. The flue gas outlet of the heat exchanger 13 is connected with the dust removing device 12. The flue gas flows out from the flue gas outlet of the heat exchanger 13 and enters the dust removal device 12 for dust removal.
In the embodiment, the heat exchanger 13 is used for exchanging heat between the low-temperature flue gas and the cold water to prepare hot water, and then the hot water is used as a waste heat source of the organic Rankine power generation system 6. The flue gas and the water in the heat exchanger 13 fully exchange heat to prepare hot water with the temperature of more than 80 ℃, and the hot water enters the evaporator 7 as waste heat flow and fully exchanges heat with the organic working medium in the evaporator 7. The organic working medium generates steam with certain pressure and temperature from the flue gas in the evaporator 7, and the steam enters the expansion machine 8 to do work through expansion, so that the generator 9 is driven to run to generate power, the waste heat in the low-temperature flue gas is recovered and converted into electric energy, and the energy waste is avoided.
Further, the organic rankine power generation system 6 further includes a cooling tower 15 and a cooling water circulation pump 16. The water outlet of the cooling tower 15 is connected to the inlet of a cooling water circulation pump 16, and the outlet of the cooling water circulation pump 16 is connected to the cooling water inlet of the condenser 10.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (8)
1. The utility model provides a cold quick-witted three-section waste heat recovery power generation system of ring, its characterized in that includes:
the circular cooler comprises a first cooling section, a second cooling section and a third cooling section, and a smoke collecting hood is arranged above the third cooling section;
the organic Rankine power generation system comprises an evaporator, an expander, a generator, a condenser and a working medium pump, wherein a waste heat inflow port of the evaporator is communicated with the smoke collecting hood, and smoke can enter the evaporator from the waste heat inflow port and exchange heat with an organic working medium in the evaporator.
2. The three-stage waste heat recovery power generation system of the circular cooler according to claim 1, wherein the waste heat outflow port of the evaporator is connected with a dust removal device.
3. The circular cooler three-stage waste heat recovery power generation system according to claim 1, wherein a cooling water outlet of the condenser is connected with a water inlet of the cooling tower, a water outlet of the cooling tower is connected with an inlet of the cooling water circulating pump, and an outlet of the cooling water circulating pump is connected with a cooling water inlet of the condenser.
4. The three-stage waste heat recovery power generation system of the circular cooler according to claim 1, further comprising a liquid storage tank, wherein an organic working medium outlet of the condenser is connected with an inlet of the liquid storage tank, and an outlet of the liquid storage tank is connected with an inlet of the working medium pump.
5. The utility model provides a cold quick-witted three-section waste heat recovery power generation system of ring, its characterized in that includes:
the circular cooler comprises a first cooling section, a second cooling section and a third cooling section, and a smoke collecting hood is arranged above the third cooling section;
the heat exchanger comprises a flue gas inlet and a hot water outlet, and the flue gas inlet is communicated with the smoke collecting hood; and
the organic Rankine power generation system comprises an evaporator, an expander, a generator, a condenser and a working medium pump, wherein a waste heat inflow port of the evaporator is communicated with a hot water outlet of the heat exchanger;
the flue gas can enter the heat exchanger and exchange heat with water in the heat exchanger to form hot water, and the hot water enters the evaporator and exchanges heat with the organic working medium in the evaporator.
6. The system for generating power by recycling waste heat of the three sections of the circular cooler according to claim 5, wherein the heat exchanger further comprises a flue gas outlet, and the flue gas outlet is connected with a dust removal device.
7. The circular cooler three-stage waste heat recovery power generation system according to claim 5, wherein a cooling water outlet of the condenser is connected with a water inlet of the cooling tower, a water outlet of the cooling tower is connected with an inlet of the cooling water circulating pump, and an outlet of the cooling water circulating pump is connected with a cooling water inlet of the condenser.
8. The circular cooler three-section waste heat recovery power generation system according to claim 5, further comprising a liquid storage tank, wherein an organic working medium outlet of the condenser is connected with an inlet of the liquid storage tank, and an outlet of the liquid storage tank is connected with an inlet of the working medium pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021444233.8U CN213270008U (en) | 2020-07-21 | 2020-07-21 | Cold quick-witted three-section waste heat recovery power generation system of ring |
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| CN202021444233.8U CN213270008U (en) | 2020-07-21 | 2020-07-21 | Cold quick-witted three-section waste heat recovery power generation system of ring |
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| CN213270008U true CN213270008U (en) | 2021-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040189A1 (en) * | 2021-09-18 | 2023-03-23 | 成都佳灵绿色能源有限责任公司 | Zero-carbon reefer container refrigerating unit and refrigerating method |
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- 2020-07-21 CN CN202021444233.8U patent/CN213270008U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040189A1 (en) * | 2021-09-18 | 2023-03-23 | 成都佳灵绿色能源有限责任公司 | Zero-carbon reefer container refrigerating unit and refrigerating method |
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