CN213746819U - Boiler flue gas waste heat recovery device - Google Patents
Boiler flue gas waste heat recovery device Download PDFInfo
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- CN213746819U CN213746819U CN202022628381.1U CN202022628381U CN213746819U CN 213746819 U CN213746819 U CN 213746819U CN 202022628381 U CN202022628381 U CN 202022628381U CN 213746819 U CN213746819 U CN 213746819U
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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 discloses a boiler flue gas waste heat recovery device, include: the heat exchanger is connected in parallel to a flue gas pipeline communicated between the bag-type dust remover and the desulfurizing tower, a plurality of heat exchange tubes are arranged in the heat exchanger, a heat exchange medium circularly flows in the heat exchange tubes, and flue gas discharged by the bag-type dust remover enters the heat exchanger from a flue gas inlet, exchanges heat with the heat exchange medium and then is discharged into the desulfurizing tower from a flue gas outlet; and the heat exchange tubes are communicated with the heat exchange medium box. The utility model discloses a set up the heat exchanger between sack cleaner and desulfurizing tower, this setting can be guaranteed to carry out heat recovery from sack cleaner exhaust flue gas effectively to it and utilize.
Description
Technical Field
The utility model relates to a boiler flue gas waste heat recovery field, more specifically say so and relate to a boiler flue gas waste heat recovery device.
Background
Boiler efficiency is an important factor affecting the effect and economic benefit of a heating boiler, and the heat loss of the boiler is closely related to the thermal efficiency of the boiler. The heat loss of the boiler comprises heat loss of exhaust smoke, heat loss of gas incomplete combustion, physical heat loss of ash, heat loss of solid incomplete combustion and heat dissipation loss of the boiler. The heat loss of the exhaust smoke of the boiler is just one of the above heat losses which influences the efficiency of the boiler to the maximum. Meanwhile, the heat loss of the exhaust smoke is inevitable heat loss, and enterprises can only reduce and weaken the heat loss of the exhaust smoke, reduce the operation cost, operate economically and achieve the purpose of improving the benefit. In the actual heat supply production, whether the boiler coal consumption can be reduced by reducing the heat loss of boiler exhaust smoke is also an important basis for measuring the operation management level of the coal-fired heating boiler of an enterprise.
In general, the tail exhaust gas temperature of an industrial heating boiler is not higher than 150 ℃, but in actual conditions, when a coal-fired boiler operates for several years, the exhaust gas temperature gradually increases under the condition of normal operation of the boiler, so that the heat carried in the exhaust gas is increased, and under the condition that the total heat of fuel is not changed, the utilization heat of the boiler is reduced, and the heat efficiency of the boiler is reduced.
Therefore, how to provide a boiler flue gas waste heat recovery device, which can overcome the above problems, is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a boiler flue gas waste heat recovery device. The problem of boiler flue gas waste heat recovery effect poor and flue gas discharge temperature not constant is solved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a boiler flue gas waste heat recovery device, is applicable to and retrieves the flue gas waste heat to industry hot water boiler, and the flue gas that industry hot water boiler discharged discharges to the atmosphere again after the purification treatment of sack cleaner and desulfurizing tower in proper order, includes:
the heat exchanger is connected in parallel to a flue gas pipeline communicated between the bag-type dust collector and the desulfurization tower, the heat exchanger is provided with a flue gas inlet and a flue gas outlet, a plurality of heat exchange tubes are arranged in the heat exchanger, electric adjusting air doors I are respectively arranged on the flue gas pipeline close to the flue gas inlet and the flue gas outlet, an electric adjusting air door II is arranged on one section of the heat exchange tube connected in parallel with the heat exchanger, a heat exchange medium circularly flows in the heat exchange tubes, and flue gas discharged by the bag-type dust collector enters the heat exchanger from the flue gas inlet, exchanges heat with the heat exchange medium and then is discharged into the desulfurization tower from the flue gas outlet;
the heat exchange medium tank is filled with the heat exchange medium, the heat exchange pipe is communicated with the heat exchange medium tank, and a circulating pump and an electric flow control valve are connected in series on a circulating pipeline communicated with the heat exchange medium tank;
and the controller is respectively electrically connected with the first electric air adjusting door, the second electric air adjusting door, the circulating pump and the electric flow control valve.
According to the above technical scheme, compare with prior art, the utility model discloses a boiler flue gas waste heat recovery device, the utility model discloses a set up the heat exchanger between sack cleaner and desulfurizing tower, should set up and to guarantee to carry out heat recovery from sack cleaner exhaust flue gas effectively to it and utilize.
Preferably, the heat exchange medium is purified water. The purified water is easy to obtain, the cost is low, the specific heat capacity is high, and the heat exchange capacity is good.
Preferably, the heat exchange tubes are uniformly distributed and fixed in a coil snake shape inside the heat exchanger, and are multiple, the same end of each heat exchange tube is communicated with the water inlet header, and the other end of each heat exchange tube is communicated with the water outlet header. This setting can guarantee that the heat exchange tube can fully contact with the flue gas, improves the heat exchange efficiency of flue gas.
Preferably, the heat exchange tube with the circulation pipeline of heat exchange medium case intercommunication includes hot circulating pipe and cold circulating pipe, the export of heat exchange medium case with the case that gathers of intaking passes through the cold circulating pipe intercommunication, just one has concatenated in proper order on the cold circulating pipe circulating pump and one electric flow control valve, the entry of heat exchange medium case with the case that gathers of play water passes through hot circulating pipe intercommunication, just one has concatenated on the hot circulating pipe electric flow control valve. This setting is convenient for the regulation to the discharge in the heat transfer pipe.
Preferably, the heat exchange medium box is further communicated with the liquid adding pipeline and the liquid outlet pipeline respectively, and the liquid outlet pipeline is provided with a water pump. When the temperature of the heat exchange medium in the heat exchange medium box is increased, the heat exchange medium can be discharged in time through the liquid outlet pipeline, and the heat exchange medium in the heat exchange medium box can be supplemented in time through the liquid feeding pipeline.
Preferably, an induced draft fan is further connected in series on the flue gas pipeline communicated between the heat exchanger and the desulfurizing tower. This arrangement can enhance the flow velocity of the flue gas inside the heat exchanger.
Preferably, the draught fan with communicate between the desulfurizing tower still be provided with temperature sensor on the flue gas pipeline, temperature sensor with controller electric connection. This setting can real-time supervision get into the real-time temperature of the flue gas before the desulfurizing tower.
According to the technical scheme, compared with the prior art, the utility model discloses a boiler flue gas waste heat recovery device is provided. The following technical effects can be achieved:
the utility model can ensure that the flue gas discharged from the bag-type dust remover can effectively recycle the heat thereof by arranging the heat exchanger between the bag-type dust remover and the desulfurizing tower; through with the heat exchanger and set up temperature sensor and can pass through the electronic air damper one and electronic air damper two of controller control on the flue gas pipeline that communicates between sack cleaner and the desulfurizing tower on and this section flue gas pipeline, should set up and to guarantee to have suitable temperature when entering into the desulfurizing tower from sack cleaner exhaust flue gas behind the heat transfer effect of heat exchanger, further promote flue gas waste heat recovery's effect to energy-concerving and environment-protective.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an overall schematic diagram of a boiler flue gas waste heat recovery device;
FIG. 2 is a partial schematic view of a heat exchanger of a flue gas waste heat recovery device of a boiler;
FIG. 3 is a schematic diagram of the connection of a controller of a flue gas waste heat recovery device of a boiler.
In the figure:
1 is an industrial hot water boiler, 2 is a bag-type dust collector, 3 is a desulfurizing tower, 4 is a heat exchanger, 40 is a smoke inlet, 41 is a smoke outlet, 5 is a flue gas pipeline, 6 is a heat exchange pipe, 7 is an electric damper I, 8 is an electric damper II, 9 is a heat exchange medium box, 10 is a circulating pump, 11 is an electric flow control valve, 12 is a controller, 13 is a water inlet header, 14 is a water outlet header, 15 is a heat circulating pipe, 16 is a cold circulating pipe, 17 is a liquid adding pipeline, 18 is a liquid outlet pipeline, 19 is a water pump, 20 is a draught fan, and 21 is a temperature sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a boiler flue gas waste heat recovery device, the utility model can ensure that the flue gas discharged from a bag-type dust remover 2 can effectively recycle the heat thereof by arranging a heat exchanger 4 between the bag-type dust remover 2 and a desulfurizing tower 3; through with heat exchanger 4 and on reaching flue gas pipeline 5 of intercommunication between sack cleaner 2 and the desulfurizing tower 3 and set up temperature sensor 21 and can pass through the electronic damper 7 and the electronic damper two 8 of controller 12 control on this section flue gas pipeline 5, this setting can guarantee to have suitable temperature when entering into desulfurizing tower 3 from sack cleaner 2 exhaust flue gas behind the heat transfer effect through heat exchanger 4, further promote flue gas waste heat recovery's effect, and energy-concerving and environment-protective.
Examples
Refer to fig. 1-3 for the utility model discloses a whole and partial structure schematic diagram of an embodiment, the utility model particularly discloses a boiler flue gas waste heat recovery device is applicable to and retrieves the flue gas waste heat of industrial hot water boiler 1, and the flue gas that industrial hot water boiler 1 discharged discharges to the atmosphere again after the purification treatment of sack cleaner 2 and desulfurizing tower 3 in proper order, include:
the heat exchanger 4 is connected in parallel to a flue gas pipeline 5 communicated between the bag-type dust collector 2 and the desulfurizing tower 3, the heat exchanger 4 is provided with a flue gas inlet 40 and a flue gas outlet 41, a plurality of heat exchange pipes 6 are arranged in the heat exchanger 4, electric adjusting air doors 7 are respectively arranged on the flue gas pipeline 5 close to the flue gas inlet 40 and the flue gas outlet 41, an electric adjusting air door II 8 is arranged on one section of heat exchange pipe 6 connected in parallel with the heat exchanger 4, a heat exchange medium circularly flows in the heat exchange pipes 6, and flue gas discharged by the bag-type dust collector 2 enters the heat exchanger 4 from the flue gas inlet 40, exchanges heat with the heat exchange medium and then is discharged into the desulfurizing tower 3 from the flue gas outlet 41;
a heat exchange medium tank 9, wherein the heat exchange medium tank 9 is filled with heat exchange medium, the heat exchange tube 6 is communicated with the heat exchange medium tank 9, and a circulating pump 10 and an electric flow control valve 11 are connected in series on a circulating pipeline communicated with the heat exchange medium tank 9;
and the controller 12 is electrically connected with the electric damper I7, the electric damper II 8, the circulating pump 10 and the electric flow control valve 11 respectively, and the controller 12 is electrically connected with the electric damper II 8, the circulating pump 10 and the electric flow control valve 11 respectively.
More specifically, the heat exchange medium is purified water.
Further specifically, the heat exchange tubes 6 are uniformly distributed in a coil shape and fixed inside the heat exchanger 4, and the same ends of the heat exchange tubes 6 are communicated with the water inlet header 13 and the other ends of the heat exchange tubes are communicated with the water outlet header 14.
More specifically, the circulating pipeline of the heat exchange tube 6 communicated with the heat exchange medium tank 9 comprises a heat circulating tube 15 and a cold circulating tube 16, the outlet of the heat exchange medium tank 9 is communicated with the water inlet header 13 through the cold circulating tube 16, the cold circulating tube 16 is sequentially connected with a circulating pump 10 and an electric flow control valve 11 in series, the inlet of the heat exchange medium tank 9 is communicated with the water outlet header 14 through the heat circulating tube 15, and the heat circulating tube 15 is connected with the electric flow control valve 11 in series.
More specifically, the heat exchange medium tank 9 is also respectively communicated with a liquid feeding pipeline 17 and a liquid outlet pipeline 18, and a water pump 19 is arranged on the liquid outlet pipeline 18.
More specifically, an induced draft fan 20 is connected in series on the flue gas pipeline 5 communicated between the heat exchanger 4 and the desulfurizing tower 3.
Further specifically, a temperature sensor 21 is further arranged on the flue gas pipeline 5 communicated between the induced draft fan 20 and the desulfurizing tower 3, and the temperature sensor 21 is electrically connected with the controller 12.
The working principle of the boiler flue gas waste heat recovery device is as follows:
the flue gas of boiler exhaust firstly passes through sack cleaner 2, controller 12 control electric damper two 8 close, electric damper 7 is opened, during 2 exhaust flue gas of sack cleaner enters into heat exchanger 4, be provided with many heat exchange tubes 6 in the heat exchanger 4, heat exchange tube 6 inner loop flows has heat exchange medium, the flue gas is discharged from heat exchanger 4 again after realizing the heat exchange with heat exchange medium in heat exchanger 4, the flue gas of discharging from heat exchanger 4 enters into desulfurizing tower 3 and carries out further gas cleaning at the convulsions effect through draught fan 20.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a boiler flue gas waste heat recovery device, is applicable to and retrieves the flue gas waste heat to industry hot water boiler (1), and the flue gas that industry hot water boiler (1) discharged discharges to the atmosphere again after the purification treatment of sack cleaner (2) and desulfurizing tower (3) in proper order, its characterized in that includes:
the heat exchanger (4) is connected in parallel on a flue gas pipeline (5) communicated between the bag-type dust collector (2) and the desulfurizing tower (3), the heat exchanger (4) is provided with a smoke inlet (40) and a smoke outlet (41), a plurality of heat exchange tubes (6) are arranged in the heat exchanger, the smoke pipeline (5) close to the smoke inlet (40) and the smoke outlet (41) is respectively provided with an electric damper I (7), an electric air damper II (8) is arranged on one section of the heat exchange pipe (6) which is connected with the heat exchanger (4) in parallel, a heat exchange medium circularly flows in the heat exchange tube (6), and flue gas discharged by the bag-type dust collector (2) enters the heat exchanger (4) from the flue gas inlet (40), exchanges heat with the heat exchange medium and then is discharged into the desulfurizing tower (3) from the flue gas outlet (41);
the heat exchange device comprises a heat exchange medium box (9), wherein the heat exchange medium is filled in the heat exchange medium box (9), the heat exchange tube (6) is communicated with the heat exchange medium box (9), and a circulating pump (10) and an electric flow control valve (11) are connected in series on a circulating pipeline communicated with the heat exchange medium box (9);
the controller (12), the controller (12) respectively with electronic air damper one (7), electronic air damper two (8), circulating pump (10) and electronic flow control valve (11) electric connection.
2. The boiler flue gas waste heat recovery device according to claim 1, wherein the heat exchange medium is purified water.
3. The boiler flue gas waste heat recovery device according to claim 2, wherein the heat exchange tubes (6) are uniformly distributed in a coil shape and fixed inside the heat exchanger (4), the same end of the plurality of heat exchange tubes (6) is communicated with the water inlet header (13), and the other end of the plurality of heat exchange tubes is communicated with the water outlet header (14).
4. The boiler flue gas waste heat recovery device according to claim 3, wherein the circulation pipeline of the heat exchange pipe (6) communicated with the heat exchange medium tank (9) comprises a heat circulation pipe (15) and a cold circulation pipe (16), the outlet of the heat exchange medium tank (9) is communicated with the water inlet header tank (13) through the cold circulation pipe (16), the cold circulation pipe (16) is sequentially connected with the circulation pump (10) and the electric flow control valve (11) in series, the inlet of the heat exchange medium tank (9) is communicated with the water outlet header tank (14) through the heat circulation pipe (15), and the heat circulation pipe (15) is connected with the electric flow control valve (11) in series.
5. The boiler flue gas waste heat recovery device according to claim 1, wherein the heat exchange medium tank (9) is further communicated with a liquid adding pipeline (17) and a liquid outlet pipeline (18) respectively, and a water pump (19) is arranged on the liquid outlet pipeline (18).
6. The boiler flue gas waste heat recovery device according to claim 1, wherein an induced draft fan (20) is further connected in series on the flue gas pipeline (5) communicated between the heat exchanger (4) and the desulfurizing tower (3).
7. The boiler flue gas waste heat recovery device according to claim 6, wherein a temperature sensor (21) is further arranged on the flue gas pipeline (5) communicated between the induced draft fan (20) and the desulfurizing tower (3), and the temperature sensor (21) is electrically connected with the controller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022628381.1U CN213746819U (en) | 2020-11-13 | 2020-11-13 | Boiler flue gas waste heat recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022628381.1U CN213746819U (en) | 2020-11-13 | 2020-11-13 | Boiler flue gas waste heat recovery device |
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| CN213746819U true CN213746819U (en) | 2021-07-20 |
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| CN202022628381.1U Active CN213746819U (en) | 2020-11-13 | 2020-11-13 | Boiler flue gas waste heat recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870507A (en) * | 2022-06-07 | 2022-08-09 | 曲靖市绿地环保科技有限公司 | Refrigerant non-contact type quick-cooling heat exchange flue gas arsenic removal device and control method |
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2020
- 2020-11-13 CN CN202022628381.1U patent/CN213746819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870507A (en) * | 2022-06-07 | 2022-08-09 | 曲靖市绿地环保科技有限公司 | Refrigerant non-contact type quick-cooling heat exchange flue gas arsenic removal device and control method |
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