CN209840143U - Boiler waste heat recovery device - Google Patents
Boiler waste heat recovery device Download PDFInfo
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- CN209840143U CN209840143U CN201920314145.7U CN201920314145U CN209840143U CN 209840143 U CN209840143 U CN 209840143U CN 201920314145 U CN201920314145 U CN 201920314145U CN 209840143 U CN209840143 U CN 209840143U
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- waste heat
- flue gas
- boiler
- pipe
- heat exchange
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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 relates to a boiler waste heat recovery equipment field specifically relates to a boiler waste heat recovery device, including the boiler body, be provided with the flue gas discharge pipe on the boiler body, fixed mounting has flue gas waste heat recoverer on the flue gas discharge pipe, and flue gas waste heat recoverer is provided with the heat exchange tube including air inlet and gas outlet in the flue gas waste heat recoverer, and the input of heat exchange tube is connected with low temperature liquid pipe, and the output of heat exchange tube is connected with high temperature liquid pipe. The device is used for recycling waste heat in boiler exhaust smoke, low-temperature water and the like are heated by using high-temperature waste heat of the smoke, the smoke exhausted by a boiler body reaches a smoke waste heat recoverer through a smoke exhaust pipe, cold water is guided into a heat exchange pipe in the smoke waste heat recoverer through a low-temperature liquid pipe, the waste heat in the smoke is converted and transmitted to the cold water in the heat exchange pipe through the heat exchange pipe, and the cold water is heated and guided out through the high-temperature liquid pipe and is stored in a heat preservation water bucket to wait for use. The device has wide application and strong practicability.
Description
Technical Field
The utility model relates to a boiler waste heat recovery equipment field specifically, relates to a boiler waste heat recovery device.
Background
The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. The boiler is an energy conversion device, the energy input to the boiler is in the forms of chemical energy in fuel, electric energy, heat energy of high-temperature flue gas and the like, and steam, high-temperature water or an organic heat carrier with certain heat energy is output outwards after conversion by the boiler. The method is mainly used for thermal power stations, ships, locomotives and industrial and mining enterprises.
The main working principle of the boiler is that heat energy released after fuel combustion or waste heat in industrial production is transferred to water in a container, so that the water reaches the required temperature or steam with a certain pressure. The boiler is operated at the same time in the two parts of boiler and boiler, after water enters the boiler, the boiler heating surface transfers the absorbed heat to water in the steam-water system, so that the water is heated into hot water with certain temperature and pressure or generated steam, and the hot water or the generated steam is led out for application. In the combustion equipment part, fuel is combusted to continuously release heat, high-temperature flue gas generated by combustion transfers the heat to a boiler heating surface through heat propagation, the temperature of the high-temperature flue gas is gradually reduced, and the high-temperature flue gas is finally discharged from a chimney. Generally, the boiler can be divided into a power station boiler, an industrial boiler, a domestic boiler, a special boiler and the like.
The exhaust gas temperature of the boiler is generally 120-350 ℃, 7-25% of sensible heat and 15% of latent heat in the exhaust gas are directly discharged into the atmosphere without being utilized. The method not only causes a great deal of energy waste, but also aggravates the thermal pollution of the environment, and the lower smoke exhaust temperature is selected to reduce the smoke exhaust loss of the boiler, thereby being beneficial to improving the thermal efficiency of the boiler and saving energy and the operating cost of the boiler. But the temperature of the discharged smoke is reduced, so that the heat transfer temperature and pressure of the smoke and the working medium in the tail heating surface are reduced, the heat transfer area is increased, and the metal consumption and the initial investment of equipment are increased.
In view of the current situation, the use of a boiler waste heat recovery device with higher energy utilization rate, more stable reliability, convenience and simplicity has become a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art, the utility model provides a boiler waste heat recovery device.
The utility model discloses a boiler waste heat recovery device, including the boiler body, be provided with the flue gas discharge pipe on the boiler body, fixed mounting has flue gas waste heat recoverer on the flue gas discharge pipe, flue gas waste heat recoverer is including the air inlet that is close to the boiler body and the gas outlet of keeping away from the boiler body, be provided with the heat exchange tube in the flue gas waste heat recoverer, the heat exchange tube is snakelike bending shape and sets up and has the multichannel structure of bending, the input of heat exchange tube is close to the air inlet setting, and the input of heat exchange tube is connected with low temperature liquid pipe, and the output of heat exchange tube is close to the gas outlet.
Furthermore, the heat exchange tube is of a stainless steel fin structure and is filled in the inner cavity of the flue gas waste heat recoverer in a three-dimensional mode.
Furthermore, the edge of the inner cavity of the flue gas waste heat recoverer is also provided with a heat insulation plate.
Further, air inlet department is provided with first filter, air outlet department is provided with the second filter, air inlet and air outlet department all are provided with mounting flange.
Furthermore, a condensate pipe is further arranged on the flue gas waste heat recoverer and is located at the bottom of the flue gas waste heat recoverer.
Further, be provided with the stop valve on the high temperature liquid pipe, be provided with the heat preservation cask on the output of high temperature liquid pipe, be provided with the outlet pipe on the heat preservation cask, be provided with the booster pump on the outlet pipe.
Further, a heat recovery pump is arranged on the low-temperature liquid pipe.
Has the advantages that:
the device utilizes a heat exchange technology to convert latent heat in the flue gas discharged by the boiler into low-temperature liquid, heat the low-temperature liquid and raise the temperature of the low-temperature liquid, thereby realizing the recycling of energy; the structural arrangement of the heat exchange tube ensures high utilization efficiency; the first filter and the second filter are arranged to purify the flue gas, so that the pollution to the environment is avoided; the arranged condensate pipe ensures that the condensate water is discharged in time, thereby avoiding secondary evaporation of the condensate water; the energy utilization rate is improved, the production cost is reduced, the thermal pollution of the smoke to the environment is reduced, the environment is protected, the national environment-friendly and energy-saving theme is met, and the cost and the economy of enterprises can be increased.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a partially disassembled view of the present invention;
FIG. 5 is an enlarged schematic view at B in FIG. 4;
description of reference numerals: the boiler comprises a boiler body 1, a flue gas discharge pipe 1a, a flue gas waste heat recoverer 2, an air inlet 2a, a first filter 2a1, an air outlet 2b, a second filter 2b1, a mounting flange 2c, a heat exchange pipe 2d, a heat insulation plate 2e, a condensate pipe 2f, a low-temperature liquid pipe 3, a heat recovery pump 3a, a high-temperature liquid pipe 4, a stop valve 4a, a heat insulation water bucket 4b, a water outlet pipe 4c and a booster pump 4 d.
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 5, shown boiler waste heat recovery device, including boiler body 1, be provided with flue gas discharge pipe 1a on the boiler body 1, fixed mounting has flue gas waste heat recoverer 2 on the flue gas discharge pipe 1a, flue gas waste heat recoverer 2 is including being close to boiler body 1's air inlet 2a and keeping away from boiler body 1's gas outlet 2b, be provided with heat exchange tube 2d in the flue gas waste heat recoverer 2, heat exchange tube 2d is snakelike crooked form setting and has the multichannel structure of bending, heat exchange tube 2 d's input is close to air inlet 2a and sets up, and heat exchange tube 2 d's input is connected with low temperature liquid pipe 3, and heat exchange tube 2 d's output is close to gas outlet 2b and sets up, and heat exchange tube 2. The device is used for recycling waste heat in the flue gas discharged by the boiler, heating low-temperature water and the like by using the high-temperature waste heat of the flue gas, so that the energy is saved, the waste is reduced, the pollution of the flue gas can be reduced, and the environment is protected. Flue gas exhausted by the boiler body 1 reaches the flue gas waste heat recoverer 2 through the flue gas exhaust pipe 1a and enters the flue gas waste heat recoverer 2 through the air inlet 2a, meanwhile, cold water is guided into the heat exchange pipe 2d in the flue gas waste heat recoverer 2 through the low-temperature liquid pipe 3, then, waste heat in the flue gas is converted and transmitted to the cold water in the heat exchange pipe 2d through the heat exchange pipe 2d, the cold water is heated and heated, is guided out through the high-temperature liquid pipe 4, and is stored in the heat preservation water barrel 4b for standby. The flue gas cooled by the absorbed heat is discharged from the gas outlet 2 b. Its theory of operation is the heat transfer, and high temperature flue gas passes through high-efficient indirect heating equipment and low temperature liquid heat transfer, with cold water heating, has reduced the temperature of flue gas simultaneously, has improved the utilization of the energy, has avoided consuming extravagant, and this device uses extensively, and the practicality is strong.
The heat exchange tube 2d is of a stainless steel fin structure, and the heat exchange tube 2d is filled in the inner cavity of the flue gas waste heat recoverer 2 in a three-dimensional mode. The finned tube can maximize the heat recovery, can fully recover the latent heat in the flue gas, and has the advantages of small total pressure drop, low power consumption, high efficiency and low cost.
And a heat insulation plate 2e is also arranged at the edge of the inner cavity of the flue gas waste heat recoverer 2. The heat insulation plate 2e plays a role in heat insulation, and gathers the heat of the flue gas in the flue gas waste heat recoverer 2, so that the waste of heat dissipation is avoided, and the maximum recovery efficiency is achieved.
The gas inlet 2a is provided with a first filter 2a1, the gas outlet 2b is provided with a second filter 2b1, and mounting flanges 2c are arranged at the gas inlet 2a and the gas outlet 2 b. The flue gas passes through air inlet 2a, filters through first filter 2a1, is discharged by gas outlet 2b at last, filters through second filter 2b1, can filter the harmful substance in the flue gas effectively, reduces and discharges the pollution, and is energy-concerving and environment-protective.
The flue gas waste heat recoverer 2 is further provided with a condensate pipe 2f, and the condensate pipe 2f is located at the bottom of the flue gas waste heat recoverer 2. The condensate pipe 2f is used for discharging condensate water in the equipment, and partial steam in the flue gas is changed into condensate water, so that harmful gases such as NO2 in the flue gas can be partially dissolved, the harmful gases discharged into the atmosphere are reduced, and the environment-friendly effect can be achieved.
Be provided with stop valve 4a on the high temperature liquid pipe 4, be provided with heat preservation cask 4b on the output of high temperature liquid pipe 4, be provided with outlet pipe 4c on the heat preservation cask 4b, be provided with booster pump 4d on the outlet pipe 4 c. The low-temperature liquid absorbs latent heat in the flue gas in the heat exchange tube 2d, is heated and heated, enters the heat-preservation water barrel 4b along with the high-temperature liquid tube 4 for subsequent use, and the booster pump 4d can guide hot water in the heat-preservation water barrel 4b to a use target.
The low-temperature liquid pipe 3 is provided with a heat recovery pump 3 a. The heat recovery pump 3a sends cold water into the heat exchange tube 2d in the flue gas waste heat recoverer 2 along the low-temperature liquid tube 3.
The working principle is as follows: the device is used for recycling waste heat in the flue gas discharged by the boiler, heating low-temperature water and the like by using the high-temperature waste heat of the flue gas, so that the energy is saved, the waste is reduced, the pollution of the flue gas can be reduced, and the environment is protected. Flue gas exhausted by the boiler body 1 reaches the flue gas waste heat recoverer 2 through the flue gas exhaust pipe 1a and enters the flue gas waste heat recoverer 2 through the air inlet 2a, meanwhile, cold water is guided into the heat exchange pipe 2d in the flue gas waste heat recoverer 2 through the low-temperature liquid pipe 3, then, waste heat in the flue gas is converted and transmitted to the cold water in the heat exchange pipe 2d through the heat exchange pipe 2d, the cold water is heated and heated, is guided out through the high-temperature liquid pipe 4, and is stored in the heat preservation water barrel 4b for standby. The flue gas cooled by the absorbed heat is discharged from the gas outlet 2 b. Its theory of operation is the heat transfer, and high temperature flue gas passes through high-efficient indirect heating equipment and low temperature liquid heat transfer, with cold water heating, has reduced the temperature of flue gas simultaneously, has improved the utilization of the energy, has avoided consuming extravagant, and this device uses extensively, and the practicality is strong.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a boiler waste heat recovery device, includes boiler body (1), its characterized in that: be provided with flue gas discharge pipe (1a) on boiler body (1), fixed mounting has flue gas waste heat recoverer (2) on flue gas discharge pipe (1a), flue gas waste heat recoverer (2) including air inlet (2a) and the gas outlet (2b) of keeping away from boiler body (1) that are close to boiler body (1), be provided with heat exchange tube (2d) in flue gas waste heat recoverer (2), heat exchange tube (2d) are snakelike crooked form and set up and have the multichannel structure of bending, the input of heat exchange tube (2d) is close to air inlet (2a) and sets up, and the input of heat exchange tube (2d) is connected with low temperature liquid pipe (3), and the output of heat exchange tube (2d) is close to gas outlet (2b) and sets up, and the output of heat exchange tube (2d) is.
2. The boiler waste heat recovery device according to claim 1, characterized in that: the heat exchange tube (2d) is of a stainless steel fin structure, and the heat exchange tube (2d) is filled in the inner cavity of the flue gas waste heat recoverer (2) in a three-dimensional mode.
3. The boiler waste heat recovery device according to claim 1, characterized in that: and a heat insulation plate (2e) is also arranged at the edge of the inner cavity of the flue gas waste heat recoverer (2).
4. The boiler waste heat recovery device according to claim 1, characterized in that: air inlet (2a) department is provided with first filter (2a1), air outlet (2b) department is provided with second filter (2b1), air inlet (2a) and air outlet (2b) department all are provided with mounting flange (2 c).
5. The boiler waste heat recovery device according to claim 1, characterized in that: the flue gas waste heat recoverer (2) is further provided with a condensate pipe (2f), and the condensate pipe (2f) is located at the bottom of the flue gas waste heat recoverer (2).
6. The boiler waste heat recovery device according to claim 1, characterized in that: be provided with stop valve (4a) on high temperature liquid pipe (4), be provided with heat preservation cask (4b) on the output of high temperature liquid pipe (4), be provided with outlet pipe (4c) on heat preservation cask (4b), be provided with booster pump (4d) on outlet pipe (4 c).
7. The boiler waste heat recovery device according to claim 1, characterized in that: the low-temperature liquid pipe (3) is provided with a heat recovery pump (3 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314145.7U CN209840143U (en) | 2019-03-12 | 2019-03-12 | Boiler waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920314145.7U CN209840143U (en) | 2019-03-12 | 2019-03-12 | Boiler waste heat recovery device |
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| Publication Number | Publication Date |
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| CN209840143U true CN209840143U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920314145.7U Active CN209840143U (en) | 2019-03-12 | 2019-03-12 | Boiler waste heat recovery device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284150A (en) * | 2020-11-20 | 2021-01-29 | 华北理工大学 | Metallurgical waste heat recovery device |
| CN114322601A (en) * | 2021-12-25 | 2022-04-12 | 无锡光华锅炉制造有限公司 | Flue gas waste heat recovery type energy-saving boiler |
| CN114321361A (en) * | 2021-12-30 | 2022-04-12 | 南通航泰机械有限公司 | Pressure vessel capable of carrying out pressure regulation and waste heat recovery |
| CN116182178A (en) * | 2023-02-06 | 2023-05-30 | 江苏东安特钢机械制造有限公司 | Energy-saving type boiler waste heat collection equipment |
-
2019
- 2019-03-12 CN CN201920314145.7U patent/CN209840143U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284150A (en) * | 2020-11-20 | 2021-01-29 | 华北理工大学 | Metallurgical waste heat recovery device |
| CN114322601A (en) * | 2021-12-25 | 2022-04-12 | 无锡光华锅炉制造有限公司 | Flue gas waste heat recovery type energy-saving boiler |
| CN114321361A (en) * | 2021-12-30 | 2022-04-12 | 南通航泰机械有限公司 | Pressure vessel capable of carrying out pressure regulation and waste heat recovery |
| CN116182178A (en) * | 2023-02-06 | 2023-05-30 | 江苏东安特钢机械制造有限公司 | Energy-saving type boiler waste heat collection equipment |
| CN116182178B (en) * | 2023-02-06 | 2023-10-13 | 江苏东安特钢机械制造有限公司 | Energy-saving type boiler waste heat collection equipment |
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