CN212005748U - Power station boiler afterbody flue waste heat utilization system - Google Patents
Power station boiler afterbody flue waste heat utilization system Download PDFInfo
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- CN212005748U CN212005748U CN202020442668.2U CN202020442668U CN212005748U CN 212005748 U CN212005748 U CN 212005748U CN 202020442668 U CN202020442668 U CN 202020442668U CN 212005748 U CN212005748 U CN 212005748U
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- heat exchanger
- flue gas
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- desulfurizing tower
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model provides a power plant boiler afterbody flue waste heat utilization system, including the dust remover, the heat exchanger, desulfurizing tower and chimney, dust remover and power plant boiler flue gas exit linkage, the exhanst gas outlet of dust remover and the flue gas pipeline access connection of heat exchanger, hot water outlet and the hot water circulating pump in the water circulating pipeline of heat exchanger are connected, the hot water circulating pump is connected with hot user's heating equipment respectively, the backward flow water outlet of hot water circulating pump is connected with the cold water entry of heat exchanger, the flue gas pipeline export and the desulfurizing tower air inlet of heat exchanger are connected, the gas outlet of desulfurizing tower passes through pipe connection to chimney. The utility model discloses install the heat exchanger additional before the desulfurizing tower, give recycle to the flue gas used heat that gets into the desulfurizing tower, the flue gas inlet temperature of going into the desulfurizing tower is controlled through the electrical control valve with on the hot user connecting tube simultaneously, guarantees desulfurization efficiency, has reduced the unit energy consumption, has practiced thrift the energy, has apparent economic benefits.
Description
Technical Field
The utility model relates to a flue gas waste heat utilization technical field especially relates to a power plant boiler afterbody flue waste heat utilization system.
Background
The waste heat of the flue gas of the boiler is restricted by the acid dew point of the flue gas, so that the flue gas is difficult to be fully utilized and recycled, and a large amount of energy waste and boiler efficiency loss are caused. The temperature of the flue gas of the power station boiler is about 90-120 ℃, the temperature is the primary control means for ensuring the desulfurization efficiency, the higher temperature of the flue gas at the tail part of the power station boiler is not beneficial to the operation of a desulfurization system, and a large amount of heat can be wasted. Based on the energy-saving and economic benefit concepts, a power station boiler tail flue waste heat utilization system is urgently needed to be designed.
Disclosure of Invention
The utility model provides a solve above-mentioned problem, provide one kind and can reduce the energy extravagant, to the system of recovery power plant boiler afterbody flue gas waste heat utilization.
The utility model discloses the technical scheme who takes:
the utility model provides a power plant boiler afterbody flue waste heat utilization system, including the dust remover, the heat exchanger, desulfurizing tower and chimney, dust remover and power plant boiler flue gas exit linkage, the exhanst gas outlet of dust remover and the flue gas pipeline access connection of heat exchanger, hot water outlet and the hot water circulating pump in the water circulating pipeline of heat exchanger are connected, the hot water circulating pump is connected with hot user's heating equipment respectively, the backward flow water outlet of hot water circulating pump is connected with the cold water entry of heat exchanger, the flue gas pipeline export and the desulfurizing tower air inlet of heat exchanger are connected, the gas outlet of desulfurizing tower passes through pipe connection to chimney.
And the pipeline for connecting the dust remover with the flue gas pipeline of the heat exchanger is connected with an induced draft fan.
The inlet pipeline of draught fan on be connected with the import electrically operated gate, the flue gas outlet that the import electrically operated gate passes through pipeline and dust remover is connected.
The outlet pipeline of the draught fan is connected with an outlet electric door, and the outlet electric door is connected with the inlet of the flue gas pipeline of the heat exchanger through a pipeline.
The pipeline of the hot water circulating pump communicated to the hot user is connected with a hot water household electric regulating valve, and the pipeline of the hot user communicated to the cold water inlet of the heat exchanger is connected with a cold water household electric regulating valve.
The heat exchange tube in the heat exchanger is a fluoroplastic tube.
And the inlet of a flue gas pipeline of the heat exchanger is connected with the flue gas outlets of the plurality of dust collectors.
The utility model has the advantages that: the utility model discloses with installing the heat exchanger before the desulfurizing tower additional, give recycle to the flue gas used heat before getting into the desulfurizing tower, the flue gas inlet temperature of going into the desulfurizing tower is controlled through the electrical control valve with on the hot user connecting tube simultaneously, guarantees desulfurization efficiency, has reduced the unit energy consumption, has practiced thrift the energy, has apparent economic benefits.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Wherein: 1-a dust remover; 2-an inlet electric door; 3-a draught fan; 4-outlet electrically operated gate; 5-a heat exchanger; 6-hot water circulating pump; 7-electric regulating valve for hot water entering the house; 8-hot user; 9-cold water enters the electric regulating valve of the heat exchanger; 10-a desulfurization tower; 11-a chimney; 12-a flue gas duct; 13-water circulation line.
Detailed Description
The utility model provides a power plant boiler afterbody flue waste heat utilization system, including dust remover 1, heat exchanger 5, desulfurizing tower 10 and chimney 11, dust remover 1 and power plant boiler flue gas exit linkage, the exhanst gas outlet of dust remover 1 and the flue gas pipeline 12 access connection of heat exchanger 5, hot water outlet and hot water circulating pump 6 in the water circulating pipeline 13 of heat exchanger 5 are connected, hot water circulating pump 6 is connected with hot user 8's heating equipment respectively, hot water circulating pump 6's backward flow water outlet and heat exchanger 5's cold water entry linkage, the flue gas pipeline 12 export of heat exchanger 5 is connected with desulfurizing tower 10 air inlets, the gas outlet of desulfurizing tower 10 passes through pipe connection to chimney 11.
And the pipeline connecting the dust remover 1 with the flue gas pipeline 12 of the heat exchanger 5 is connected with an induced draft fan 3.
The import pipeline of draught fan 3 on be connected with import electrically operated gate 2, import electrically operated gate 2 passes through the flue gas outlet connection of pipeline and dust remover 1.
The outlet pipeline of the draught fan 3 is connected with an outlet electric door 4, and the outlet electric door 4 is connected with the inlet of the flue gas pipeline 12 of the heat exchanger 5 through a pipeline.
The hot water circulating pump 6 is connected with a hot water household electric regulating valve 7 on a pipeline communicated with a hot user 8, and the hot user 8 is connected with a cold water inlet heat exchanger electric regulating valve 9 on a pipeline communicated with a cold water inlet of the heat exchanger 5.
The heat exchange tube in the heat exchanger 5 is a fluoroplastic tube.
The inlet of the flue gas pipeline 12 of the heat exchanger 5 is connected with the flue gas outlets of the plurality of dust collectors 1.
The working principle is as follows: the waste heat of the flue gas of the power station boiler is firstly connected to a dust remover 1 to remove dust from the hot flue gas, the temperature of the hot flue gas of the power station boiler is between 90 ℃ and 120 ℃, the temperature has important influence on the desulfurization efficiency of a desulfurization tower 10, the desulfurization temperature with better desulfurization effect of the desulfurization tower 10 is between 65 ℃ and 75 ℃, the flue gas enters a heat exchanger 5 before passing through the desulfurization tower 10 to cool the high-temperature flue gas with the temperature of 90 ℃ to 120 ℃ to about 70 ℃, the heat released by the heat exchange of the heat exchanger 5 heats the circulating water in a water circulating pipeline 13, a hot water circulating pump 6 supplies hot water to a hot user 8, a hot water household electric regulating valve 7 controls the amount of heat exchange water, further controls the temperature of the flue gas entering the desulfurization tower 10 to ensure better desulfurization efficiency, the hot water circulating pipeline 13 after heat exchange is opened, the hot water household electric regulating valve 7 is started, the hot water circulating pump 6 is started, cold water enters the, the opening of the electric regulating valve 9 for cold water entering the heat exchanger can be properly regulated to control according to the temperature of the flue gas at the inlet of the desulfurizing tower 10.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (7)
1. The utility model provides a power plant boiler afterbody flue waste heat utilization system, a serial communication port, including dust remover (1), heat exchanger (5), desulfurizing tower (10) and chimney (11), dust remover (1) and power plant boiler flue gas exit linkage, the exhanst gas outlet of dust remover (1) and the flue gas pipeline (12) access connection of heat exchanger (5), the hot water export in the water circulating pipeline (13) of heat exchanger (5) is connected with hot water circulating pump (6), hot water circulating pump (6) are connected with the heating equipment of heat consumer (8) respectively, the backward flow water export of hot water circulating pump (6) and the cold water entry connection of heat exchanger (5), flue gas pipeline (12) export and desulfurizing tower (10) air inlet of heat exchanger (5) are connected, the gas outlet of desulfurizing tower (10) is passed through pipe connection to chimney (11).
2. The utility boiler tail flue waste heat utilization system of claim 1, characterized in that an induced draft fan (3) is connected to a pipeline connecting the dust collector (1) and the flue gas pipeline (12) of the heat exchanger (5).
3. The utility boiler tail flue waste heat utilization system of claim 2, characterized in that an inlet pipeline of the induced draft fan (3) is connected with an inlet electric door (2), and the inlet electric door (2) is connected with a flue gas outlet of the dust remover (1) through a pipeline.
4. The utility boiler tail flue waste heat utilization system of claim 2, characterized in that an outlet electric door (4) is connected to an outlet pipeline of the induced draft fan (3), and the outlet electric door (4) is connected with an inlet of a flue gas pipeline (12) of the heat exchanger (5) through a pipeline.
5. The utility boiler tail flue waste heat utilization system according to claim 1, characterized in that a hot water inlet electric control valve (7) is connected to a pipeline of the hot water circulating pump (6) communicated to the hot user (8), and a cold water inlet electric control valve (9) is connected to a pipeline of the hot user (8) communicated to a cold water inlet of the heat exchanger (5).
6. The utility boiler tail flue waste heat utilization system of claim 1, characterized in that the heat exchange tubes in the heat exchanger (5) are fluoroplastic tubes.
7. The utility boiler tail flue waste heat utilization system according to claim 1, characterized in that the inlet of the flue gas duct (12) of the heat exchanger (5) is connected with the flue gas outlets of the plurality of dust collectors (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020442668.2U CN212005748U (en) | 2020-03-31 | 2020-03-31 | Power station boiler afterbody flue waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020442668.2U CN212005748U (en) | 2020-03-31 | 2020-03-31 | Power station boiler afterbody flue waste heat utilization system |
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| CN212005748U true CN212005748U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020442668.2U Active CN212005748U (en) | 2020-03-31 | 2020-03-31 | Power station boiler afterbody flue waste heat utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629304A (en) * | 2020-12-17 | 2021-04-09 | 国网河北省电力有限公司电力科学研究院 | Coal-fired flue gas waste heat recovery device and method |
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2020
- 2020-03-31 CN CN202020442668.2U patent/CN212005748U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629304A (en) * | 2020-12-17 | 2021-04-09 | 国网河北省电力有限公司电力科学研究院 | Coal-fired flue gas waste heat recovery device and method |
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