CN216557750U - Flue gas water taking system of cooperative absorption type refrigerating device - Google Patents
Flue gas water taking system of cooperative absorption type refrigerating device Download PDFInfo
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- CN216557750U CN216557750U CN202122561836.7U CN202122561836U CN216557750U CN 216557750 U CN216557750 U CN 216557750U CN 202122561836 U CN202122561836 U CN 202122561836U CN 216557750 U CN216557750 U CN 216557750U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses a flue gas water taking system of a synergistic absorption type refrigerating device, belonging to the technical field of waste heat utilization and energy and water saving of coal-fired boilers, and comprising a generator (1), a condenser (2), an evaporator (3), a refrigerant circulating pump (4), an absorber (5), a solution circulating pump (6), a solution heat exchanger (7), a refrigerant circulating pump (8), a flue gas condenser (9), a recovered water collecting system (10), a boiler (11), an air preheater (12), a dust remover (13), a desulfurizing tower (14), a chimney (15), a steam turbine (16) and a generator (17). The absorption type refrigerating device is applied to the waste heat utilization of the power plant, the flue gas after the desulfurizing tower can be subjected to moisture recovery by utilizing the flue gas waste heat of the coal-fired power plant, the flue gas waste heat can be utilized to the maximum extent, the moisture can be saved, and a very important technical means is provided for the energy and water conservation of the power plant.
Description
Technical Field
The utility model belongs to the technical field of waste heat utilization and energy and water conservation of thermal power generating units, and particularly relates to a flue gas water taking system of a cooperative absorption type refrigerating device.
Background
A coal-fired generator set is key equipment for saving energy, treating coal-fired pollution and solving environmental problems. The most urgent problem to be faced at present is to reduce the consumption of water resources of the conventional coal-fired power generating unit by adopting the flue gas moisture recovery and treatment technology of the coal-fired power generating unit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problem of water resource shortage of thermal power generating unit boilers in the existing northern arid regions, and provides a flue gas water taking system of a cooperative absorption type refrigerating device.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
a flue gas water taking system of a cooperative absorption type refrigerating device comprises a generator, a condenser, an evaporator, an absorber, a solution circulating pump, a solution heat exchanger, a flue gas condenser, a recovered water collecting system, a boiler, an air preheater, a dust remover, a desulfurizing tower and a chimney;
the method comprises the following steps that flue gas discharged by a boiler is introduced into a flue gas inlet of an air preheater, a flue gas outlet of the air preheater is connected to a flue gas inlet of a dust remover, a flue gas outlet of the dust remover is connected to a flue gas outlet of a generator, and the flue gas outlet of the generator is connected to a chimney through a desulfurizing tower and a flue gas condenser in sequence;
a steam outlet of the generator is connected to a steam inlet of the condenser, a condensed water outlet of the condenser is connected to a water inlet of the evaporator, and a water vapor outlet of the evaporator is connected to a water vapor inlet of the absorber;
a lithium bromide solution outlet of the generator is connected to a lithium bromide solution inlet of the absorber, and a lithium bromide solution outlet of the absorber is connected to a lithium bromide solution inlet of the generator through a solution circulating pump and a solution heat exchanger;
the cooling water inlet and outlet of the flue gas condenser are connected with the refrigerant inlet and outlet of the evaporator.
The utility model further improves the method and the device, and further comprises a steam turbine and a generator, wherein steam generated by the boiler is used for driving the steam turbine to work, and the steam turbine is used for driving the generator to generate electricity.
The utility model is further improved in that a cooling water is introduced into the absorber and the condenser for heat exchange.
The system is further improved in that lithium bromide is adopted as a circulating solution, the waste heat of the flue gas generated after a dust remover of a coal-fired power plant is fully utilized as a heat source, and water with the temperature of more than 0 ℃ is prepared to be used as a cooling water source for taking water from the flue gas.
The utility model is further improved in that the lower part of the flue gas condenser is provided with a reclaimed water collecting system for recycling water.
The utility model is further improved in that a refrigerant circulating pump is arranged at the outlet of the evaporator.
The utility model is further improved in that a refrigerant circulating pump is arranged at a refrigerant outlet of the flue gas condenser.
The utility model has the further improvement that the refrigerant water led out from the evaporator is used as a cooling water source of the flue gas condenser and is sent to the flue gas condenser by the refrigerant circulating pump to condense the flue gas and take water.
The utility model has at least the following beneficial technical effects:
the absorption type refrigerating device is applied to the waste heat utilization of the power plant, the flue gas after the desulfurizing tower can be subjected to moisture recovery by utilizing the flue gas waste heat of the coal-fired power plant, the flue gas waste heat can be utilized to the maximum extent, the moisture can be saved, and a very important technical means is provided for the energy and water conservation of the power plant.
Specifically, the present invention has the following advantages:
the utility model provides a synergistic absorption type refrigerating device for condensing and taking water from flue gas, which can well utilize the waste heat of the flue gas of a power plant to further reduce the temperature of the condensed flue gas and has obvious effect of taking water from the flue gas. The utility model realizes the cooperation of cold and heat sources of the power plant, can save a large amount of water for the coal-fired unit and has considerable economic benefit.
Drawings
Fig. 1 is a schematic diagram of a flue gas water intake system of a cooperative absorption type refrigeration device according to the present invention.
Description of the reference numerals:
1 is a generator, 2 is a condenser, 3 is an evaporator, 4 is a refrigerant circulating pump, 5 is an absorber, 6 is a solution circulating pump, 7 is a solution heat exchanger, 8 is a refrigerant circulating pump, 9 is a flue gas condenser, 10 is a recovered water collecting system, 11 is a boiler, 12 is an air preheater, 13 is a dust remover, 14 is a desulfurizing tower, 15 is a chimney, 16 is a steam turbine, and 17 is a generator.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
According to the flue gas water taking system of the synergistic absorption type refrigerating device, lithium bromide is used as a circulating solution, flue gas waste heat after a coal-fired power plant dust remover 13 is fully utilized as a heat source, and water with the temperature of more than 0 ℃ is prepared to be used as a cooling water source for taking the flue gas. The generator 1 is connected with a flue between the dust remover 13 and the desulfurizing tower 14, the flue gas in the flue is indirectly heat-exchanged with a lithium bromide solution in the generator 1 to release heat, the lithium bromide solution is heated, water vapor is evaporated and separated out, meanwhile, the pressure is raised, the water vapor enters the condenser 2, the water vapor is cooled and throttled in the condenser 2 to enter the evaporator 3, in the evaporator 3 with low pressure, water is evaporated and absorbed heat again as refrigerant, the refrigerant circulating pump 4 enables the water to be continuously circulated and evaporated, the refrigerant is indirectly cooled in the evaporation process, the refrigerant is used as a cooling water source of the flue gas condenser 9 to be sent into the flue gas condenser 9 to cool the flue gas, and the water vapor in the flue gas is condensed and separated out and then sent to the recovered water collecting system. The evaporated water vapor in the evaporator 3 enters the absorber 5, is absorbed by the high-concentration lithium bromide solution and then is sent to the generator 1 through the solution circulating pump 6, the solution heat exchanger 7 is arranged between the outlet of the solution circulating pump 6 and the generator 1, and the concentrated solution flowing from the generator 1 to the absorber 5 in the solution heat exchanger 7 and the dilute solution sent to the generator 1 by the absorber 5 indirectly exchange heat.
The utility model provides an operation method of a flue gas water taking system of a cooperative absorption type refrigerating device, which comprises the following steps:
the flue gas pipeline between the dust remover 13 of the power plant boiler 11 and the desulfurizing tower 14 is in indirect contact heat exchange with the generator 1 of the absorption refrigeration system.
A flue gas condenser 9 is arranged between a desulfurizing tower 14 and a chimney 15 of a power plant for flue gas heat exchange and water taking, and cooling water of the flue gas condenser 9 is connected with a refrigerant inlet and a refrigerant outlet of an evaporator 3. And a reclaimed water collecting system 10 is arranged at the lower part of the flue gas condenser 9 for recycling water.
For the absorption type refrigerating device, a generator 1 is connected with a condenser 2 and an absorber 5, the condenser 2 is connected with an evaporator 3, the evaporator 3 is connected with the absorber 5 and a flue gas condenser 9, and the absorber 5 is connected with the generator 1. A refrigerant circulating pump 4 is arranged at the position of the evaporator 1, a solution circulating pump 6 is arranged at the outlet of the absorber 5, and a solution heat exchanger 7 is arranged between the generator 1 and the absorber 5.
The flue gas discharged from the coal-fired power plant boiler 11 is cooled and dedusted by the air preheater 12, the deduster 13 and the like, the flue gas at the outlet of the deduster 13 is introduced into the generator 1 to indirectly heat the lithium bromide solution, the water vapor in the generator 1 enters the condenser 2, and the lithium bromide concentrated solution enters the absorber 5. The vapor is released heat in the condenser 2 and condensed into the evaporator 3, the water is evaporated again to absorb heat in the low-pressure environment of the evaporator 3, the refrigerant water is cooled, and the refrigerant circulating pump 4 is arranged beside the evaporator 3. The evaporated water vapor enters an absorber 5 to be absorbed by the lithium bromide concentrated solution, the concentration of the lithium bromide solution becomes low, and the lithium bromide solution is sent to the generator 1 by a solution circulating pump 6. An indirect solution heat exchanger 7 is arranged between the lithium bromide concentrated solution and the lithium bromide dilute solution for heat recovery.
The refrigerant water led out from the evaporator 3 is used as a cooling water source of the flue gas condenser 9 and is sent to the flue gas condenser 9 by the refrigerant circulating pump 8 to condense and take water from the flue gas. The water condensed from the flue gas is sent to the recovered water collection system 10 for reuse.
In addition, a flow of cooling water is introduced into the absorber 5 and the condenser 2 for heat exchange, and the cooling water can be used as the water of a power plant process water source or a reclaimed water collecting system.
While the utility model has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. A flue gas water taking system of a synergistic absorption type refrigerating device is characterized by comprising a generator (1), a condenser (2), an evaporator (3), an absorber (5), a solution circulating pump (6), a solution heat exchanger (7), a flue gas condenser (9), a recovered water collecting system (10), a boiler (11), an air preheater (12), a dust remover (13), a desulfurizing tower (14) and a chimney (15);
flue gas discharged by a boiler (11) is introduced into a flue gas inlet of an air preheater (12), a flue gas outlet of the air preheater (12) is connected to a flue gas inlet of a dust remover (13), a flue gas outlet of the dust remover (13) is connected to a flue gas outlet of a generator (1), and the flue gas outlet of the generator (1) is connected to a chimney (15) sequentially through a desulfurizing tower (14) and a flue gas condenser (9);
a steam outlet of the generator (1) is connected to a steam inlet of the condenser (2), a condensed water outlet of the condenser (2) is connected to a water inlet of the evaporator (3), and a steam outlet of the evaporator (3) is connected to a steam inlet of the absorber (5);
a lithium bromide solution outlet of the generator (1) is connected to a lithium bromide solution inlet of the absorber (5), and a lithium bromide solution outlet of the absorber (5) is connected to a lithium bromide solution inlet of the generator (1) through a solution circulating pump (6) and a solution heat exchanger (7);
the cooling water inlet and outlet of the flue gas condenser (9) are connected with the refrigerant inlet and outlet of the evaporator (3).
2. The system for taking water from flue gas of a cooperative absorption refrigeration device according to claim 1, further comprising a steam turbine (16) and a generator (17), wherein the steam generated by the boiler (11) is used for driving the steam turbine (16) to work, and the steam turbine (16) is used for driving the generator (17) to generate electricity.
3. The system for taking water from flue gas of a cooperative absorption refrigeration device according to claim 1, further comprising introducing a flow of cooling water into the absorber (5) and the condenser (2) for heat exchange.
4. The system for taking water from flue gas of a synergistic absorption refrigeration device according to claim 1, characterized in that lithium bromide is used as a circulating solution, the residual heat of flue gas after a dust remover (13) of a coal-fired power plant is fully utilized as a heat source, and water with the temperature of above 0 ℃ is prepared as a cooling water source for taking water from flue gas.
5. The water intake system of a cooperative absorption refrigerator according to claim 1, wherein the recovered water collection system (10) is disposed below the flue gas condenser (9) for recovering water.
6. A system for taking water from flue gas of a cooperative absorption refrigeration plant according to claim 1, wherein a refrigerant circulation pump (4) is provided at the outlet of the evaporator (3).
7. The water intake from flue gas system of a cooperative absorption refrigerator as claimed in claim 1, wherein a refrigerant circulating pump (8) is provided at the refrigerant outlet of the flue gas condenser (9).
8. The system for taking water from flue gas of a cooperative absorption refrigeration device according to claim 1, wherein the refrigerant water led out from the evaporator (3) is used as a cooling water source of the flue gas condenser (9) and is sent to the flue gas condenser (9) by the refrigerant circulating pump (8) to condense and take water from flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122561836.7U CN216557750U (en) | 2021-10-21 | 2021-10-21 | Flue gas water taking system of cooperative absorption type refrigerating device |
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| CN202122561836.7U CN216557750U (en) | 2021-10-21 | 2021-10-21 | Flue gas water taking system of cooperative absorption type refrigerating device |
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| CN216557750U true CN216557750U (en) | 2022-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322355A (en) * | 2021-10-21 | 2022-04-12 | 西安热工研究院有限公司 | Flue gas water taking system of cooperative absorption type refrigerating device and operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322355A (en) * | 2021-10-21 | 2022-04-12 | 西安热工研究院有限公司 | Flue gas water taking system of cooperative absorption type refrigerating device and operation method |
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