CN111023844A - Flue gas waste heat recycling system and flue gas waste heat recycling method - Google Patents
Flue gas waste heat recycling system and flue gas waste heat recycling method Download PDFInfo
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- CN111023844A CN111023844A CN201811175305.0A CN201811175305A CN111023844A CN 111023844 A CN111023844 A CN 111023844A CN 201811175305 A CN201811175305 A CN 201811175305A CN 111023844 A CN111023844 A CN 111023844A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention provides a flue gas waste heat recycling system which comprises a main flue communicated with a smoke exhaust port of smoke exhaust equipment, a waste heat boiler communicated with the main flue through a first branch flue, and a chimney communicated with a smoke exhaust port of the waste heat boiler through a second branch flue, wherein the smoke exhaust port of the waste heat boiler is communicated with a wind mixing port formed in the main flue through a third branch flue. According to the invention, the flue gas discharged by the waste heat boiler is mixed with the flue gas discharged by the smoke exhaust equipment, so that the purpose of cooling the flue gas discharged by the smoke exhaust equipment is achieved, the flue gas discharged by the waste heat boiler is fully utilized, and the increase of the total amount of the flue gas and the increase of the workload during subsequent environmental protection treatment or emission treatment of the flue gas caused by mixing external cold air with the flue gas discharged by the smoke exhaust equipment in the prior art are avoided.
Description
Technical Field
The invention relates to the technical field of flue gas waste heat recycling, in particular to a flue gas waste heat recycling system and a flue gas waste heat recycling method.
Background
At present, with the increase of glass varieties, the requirements on the quality of glass are improved, and the application of the total oxygen kiln is more and more extensive compared with the traditional air combustion-supporting melting kiln. The oxygen-enriched kiln is partially different from an air combustion-supporting kiln in that: the smoke discharge temperature of the total oxygen kiln is high, and the smoke temperature of a total flue can reach 1300 ℃; the total oxygen kiln is not provided with an air regenerative chamber, and the exhausted smoke is directly discharged without heat exchange. Because the flue gas of the total oxygen kiln is subjected to heat recovery through the waste heat boiler or is subjected to post-treatment by using the environment-friendly equipment in order to meet the environmental protection requirement of the flue gas, if the flue gas directly utilizes too high flue temperature, the existing waste heat boiler, the environment-friendly equipment and the process and equipment thereof can not meet the requirement, the mode adopted at the present stage is to arrange a cold air valve on the total flue of the total oxygen kiln, the flue gas temperature is reduced to about 600 ℃ through a cold air adding mode, the waste heat utilization is carried out through the waste heat boiler, and then the flue gas is subjected to environmental protection treatment through devices such as flue gas desulfurization and dust removal and is discharged to the atmosphere through a chimney. However, the waste heat recycling method has the following disadvantages: firstly, the low-temperature flue gas waste heat discharged by the waste heat boiler can not be reused; and secondly, the total amount of the flue gas is increased by reducing the temperature of the flue gas in a cold air charging mode, the flue gas treatment amount of the flue gas environment-friendly equipment is increased, and the investment cost and the operation cost of the part of equipment are increased.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a flue gas waste heat recycling system capable of utilizing flue gas waste heat.
In order to achieve the purpose, the invention provides a flue gas waste heat recycling system which comprises a main flue communicated with a smoke exhaust port of smoke exhaust equipment, a waste heat boiler communicated with the main flue through a first branch flue, and a chimney communicated with a smoke exhaust port of the waste heat boiler through a second branch flue, wherein the smoke exhaust port of the waste heat boiler is communicated with a wind mixing port formed in the main flue through a third branch flue.
Further, install first total flashboard on the main flue, just first total flashboard is located the main smoke inlet of main flue and is converted between the wind gap, the main smoke inlet of main flue is linked together with smoke exhausting equipment's exhaust port.
Further, install first branch flashboard on the first branch flue.
Further, a second branch damper is installed on the second branch flue.
Further, a first induced draft fan is installed on the second sub-flue.
Furthermore, an environment-friendly device is installed on the second sub-flue.
Further, a third branch damper is installed on the third branch flue.
Further, a second induced draft fan is installed on the third flue branch duct.
Further, the total smoke outlet of the total flue is communicated with the chimney, a branch smoke outlet is formed in the total flue, the first branch flue is communicated with the branch smoke outlet, a second total gate is installed on the total flue, and the second total gate is located between the branch smoke outlet and the total smoke outlet.
As mentioned above, the flue gas waste heat recycling system provided by the invention has the following beneficial effects:
in the flue gas waste heat recycling system, the smoke outlets of the other heat boilers are communicated with the air mixing port arranged on the main flue through the third branch flue, so that flue gas with lower temperature discharged by the waste heat boilers enters the main flue through the third branch flue and is mixed with flue gas with higher temperature discharged by the smoke discharging equipment in the main flue, mixed flue gas is formed, the mixed flue gas is introduced into the waste heat boilers through the first branch flue to be used for heating the waste heat boilers, and the heat of the mixed flue gas and the heat of the flue gas discharged by the smoke discharging equipment are recycled; the temperature of the mixed flue gas is lower than that of the flue gas discharged by the smoke discharging equipment, so that the waste heat boiler is prevented from being damaged when the flue gas with higher temperature and discharged by the smoke discharging equipment directly enters the waste heat boiler; meanwhile, the flue gas discharged by the waste heat boiler is mixed with the flue gas discharged by the smoke exhaust equipment, so that the aim of cooling the flue gas discharged by the smoke exhaust equipment is fulfilled, the flue gas discharged by the waste heat boiler is fully utilized, and the increase of the total amount of the flue gas and the increase of the workload during subsequent environmental protection treatment or emission treatment of the flue gas caused by the mixing of external cold air and the flue gas discharged by the smoke exhaust equipment in the prior art are avoided.
The invention aims to solve another technical problem of providing a flue gas waste heat recycling method capable of utilizing flue gas waste heat.
In order to achieve the purpose, the invention provides a flue gas waste heat recycling method adopting the flue gas waste heat recycling system, which comprises the following steps:
the smoke outlet of the smoke exhaust equipment exhausts the smoke with the temperature higher than 600 ℃ into the main flue; and the smoke outlet of the waste heat boiler discharges the smoke with the temperature lower than 600 ℃ into the third branch flue, the smoke with the temperature lower than 600 ℃ enters the main flue through the third branch flue and the air charging port, and is mixed with the smoke with the temperature higher than 600 ℃ discharged by the smoke discharging equipment to form mixed smoke, and the mixed smoke flows into the waste heat boiler through the first branch flue.
As described above, the flue gas waste heat recycling method of the present invention has the following beneficial effects:
according to the flue gas waste heat recycling method, flue gas with the temperature lower than 600 ℃ discharged by a waste heat boiler and flue gas with the temperature higher than 600 ℃ discharged by smoke discharging equipment are mixed through a third branch flue and a gas mixing port, so that mixed flue gas is obtained, the mixed flue gas is introduced into the waste heat boiler through a first branch flue to be used for heating the waste heat boiler, and the heat of the mixed flue gas and the heat of the flue gas discharged by the smoke discharging equipment are recycled; the temperature of the mixed flue gas is lower than that of the flue gas discharged by the smoke discharging equipment, so that the waste heat boiler is prevented from being damaged when the flue gas with higher temperature and discharged by the smoke discharging equipment directly enters the waste heat boiler; meanwhile, the flue gas discharged by the waste heat boiler is mixed with the flue gas discharged by the smoke exhaust equipment, so that the aim of cooling the flue gas discharged by the smoke exhaust equipment is fulfilled, the flue gas discharged by the waste heat boiler is fully utilized, and the increase of the total amount of the flue gas and the increase of the workload during subsequent environmental protection treatment or emission treatment of the flue gas caused by the mixing of external cold air and the flue gas discharged by the smoke exhaust equipment in the prior art are avoided.
Drawings
Fig. 1 is a schematic structural diagram of a flue gas waste heat recycling system in the invention.
Description of the element reference numerals
1 first induced draft fan of fume extractor 52
11 full-oxygen kiln 53 environmental protection device
2 total flue 54 fourth damper
21 change wind gap 55 fifth flashboard
22 first main gate plate 56 third induced draft fan
23 second main gate 6 chimney
3 a first sub-flue 7 and a third sub-flue
31 first branch gate 71 and third branch gate
4 second induced draft fan of exhaust-heat boiler 72
5 second branch flue 73 sixth branch gate
51 second branch gate
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention unless otherwise specified.
As shown in figure 1, the invention provides a flue gas waste heat recycling system, which comprises a main flue 2 communicated with a smoke exhaust port of smoke exhaust equipment 1, a waste heat boiler 4 communicated with the main flue 2 through a first branch flue 3, and a chimney 6 communicated with a smoke exhaust port of the waste heat boiler 4 through a second branch flue 5, wherein the smoke exhaust port of the waste heat boiler 4 is communicated with a wind mixing port 21 arranged on the main flue 2 through a third branch flue 7. In the flue gas waste heat recycling system, the smoke outlets of the rest of the heat boilers 4 are communicated with the air charging port 21 arranged on the main flue 2 through the third branch flue 7, so that flue gas with lower temperature discharged by the heat boilers 4 enters the main flue 2 through the third branch flue 7 and is mixed with flue gas with higher temperature discharged by the smoke exhaust equipment 1 in the main flue 2 to form mixed flue gas, the mixed flue gas is introduced into the heat boilers 4 through the first branch flue 3 to be heated and used by the heat boilers 4, and the heat of the mixed flue gas and the flue gas discharged by the smoke exhaust equipment 1 is recycled; the temperature of the mixed flue gas is lower than that of the flue gas discharged by the smoke discharging equipment 1, so that the waste heat boiler 4 is prevented from being damaged when the flue gas with higher temperature and discharged by the smoke discharging equipment 1 directly enters the waste heat boiler 4; meanwhile, the flue gas discharged by the waste heat boiler 4 is mixed with the flue gas discharged by the smoke exhaust equipment 1, so that the aim of cooling the flue gas discharged by the smoke exhaust equipment 1 is fulfilled, the flue gas discharged by the waste heat boiler 4 is fully utilized, and the increase of the total amount of the flue gas and the increase of the workload when the flue gas is subsequently subjected to environmental protection treatment or emission treatment due to the increase of the total amount of the flue gas when the outside cold air is mixed with the flue gas discharged by the smoke exhaust equipment 1 in the prior art are avoided.
Meanwhile, as shown in fig. 1, the present invention provides a flue gas waste heat recycling method using the above flue gas waste heat recycling system, comprising the steps of:
the smoke outlet of the smoke exhaust equipment 1 exhausts the smoke with the temperature higher than 600 ℃ into the main flue 2; the smoke outlet of the waste heat boiler 4 discharges the smoke with the temperature lower than 600 ℃ into the third branch flue 7, the smoke with the temperature lower than 600 ℃ enters the main flue 2 through the third branch flue 7 and the air charging port 21, and is mixed with the smoke with the temperature higher than 600 ℃ discharged by the smoke discharging equipment 1 to form mixed smoke, and the mixed smoke flows into the waste heat boiler 4 through the first branch flue 3.
According to the method for recycling the waste heat of the flue gas, the flue gas with the temperature lower than 600 ℃ discharged by the waste heat boiler 4 is mixed with the flue gas with the temperature higher than 600 ℃ discharged by the smoke exhausting equipment 1 through the third branch flue 7 and the air charging port 21, so that mixed flue gas is obtained, the mixed flue gas is introduced into the waste heat boiler 4 through the first branch flue 3 to be used for heating the waste heat boiler 4, and the heat of the mixed flue gas and the flue gas discharged by the smoke exhausting equipment 1 is recycled; the temperature of the mixed flue gas is lower than that of the flue gas discharged by the smoke discharging equipment 1, so that the waste heat boiler 4 is prevented from being damaged when the flue gas with higher temperature and discharged by the smoke discharging equipment 1 directly enters the waste heat boiler 4; meanwhile, the flue gas discharged by the waste heat boiler 4 is mixed with the flue gas discharged by the smoke exhaust equipment 1, so that the aim of cooling the flue gas discharged by the smoke exhaust equipment 1 is fulfilled, the flue gas discharged by the waste heat boiler 4 is fully utilized, and the increase of the total amount of the flue gas and the increase of the workload when the flue gas is subsequently subjected to environmental protection treatment or emission treatment due to the increase of the total amount of the flue gas when the outside cold air is mixed with the flue gas discharged by the smoke exhaust equipment 1 in the prior art are avoided.
As shown in fig. 1, the fume extractor 1 is a total oxygen kiln 11, more specifically, a glass total oxygen kiln.
As shown in fig. 1, in the present embodiment, a first main damper 22 is installed on the main flue 2, and the first main damper 22 is located between the main smoke inlet of the main flue 2 and the smoke charging opening 21, and the main smoke inlet of the main flue 2 is communicated with the smoke outlet of the smoke exhaust device 1. In use, the regulation of the amount of flue gas discharged by the fume extractor 1 into the main flue 2 can be achieved by operating the first main shutter 22. The first main damper 22 in this embodiment is also referred to as a main stack regulating damper.
As shown in fig. 1, the first branch flue 3 is provided with a first branch damper 31. When the waste heat boiler is used, the on-off control of the first branch flue 3 is realized by opening or closing the first branch gate plate 31, so that the mixed flue gas in the main flue 2 can be introduced into the waste heat boiler 4 according to the requirement.
As shown in fig. 1, the second branch flue 5 is provided with a second branch damper 51. When the waste heat boiler is used, the on-off of the second branch flue 5 is controlled by opening or closing the second branch gate plate 51, so that the flue gas discharged by the waste heat boiler 4 can be discharged to the chimney 6 through the second branch flue 5 and discharged through the chimney 6 according to requirements.
As shown in fig. 1, a first induced draft fan 52 is installed on the second sub-flue 5 in the present embodiment, so as to generate a negative pressure in the second sub-flue 5 by using the first induced draft fan 52, thereby guiding and promoting the flue gas discharged from the waste heat boiler 4 to be discharged to the chimney 6 through the second sub-flue 5.
As shown in fig. 1, in this embodiment, the environmental protection device 53 is installed on the second sub-flue 5 to perform corresponding environmental protection treatment on the flue gas flowing through the second sub-flue 5 by using the environmental protection device 53, so as to ensure that the part of the flue gas meets the environmental protection requirement, and then the flue gas is discharged to the outside through the chimney 6 to avoid polluting the outside environment.
As shown in fig. 1, the third split flue 7 is provided with a third split damper 71. When the exhaust gas purification device is used, the third split gate plate 71 is opened or closed to control the on-off of the third split flue 7, so that the flue gas discharged by the waste heat boiler 4 can be introduced into the main flue 2 through the third split flue 7 as required and is mixed with the flue gas discharged into the main flue 2 by the smoke exhaust equipment 1.
As shown in fig. 1, the second induced draft fan 72 is installed on the third branch flue 7 in the present embodiment, so that a negative pressure is generated in the third branch flue 7 by the second induced draft fan 72, thereby guiding and promoting the flue gas discharged from the heat recovery steam generator 4 to flow into the main flue 2 through the third branch flue 7.
As shown in fig. 1, in the present embodiment, the main smoke outlet of the main smoke channel 2 is communicated with the chimney 6, the main smoke channel 2 is provided with a branch smoke outlet, the first branch smoke channel 3 is communicated with the branch smoke outlet, the main smoke channel 2 is provided with a second main gate plate 23, and the second main gate plate 23 is located between the branch smoke outlet and the main smoke outlet. When needed, the second main gate plate 23 is opened or closed to control the on-off of the part of the main flue 2 between the branch smoke outlet and the main smoke outlet, so that the mixed smoke in the main flue 2 can be directly discharged to the chimney 6 and discharged through the chimney 6 according to the needs. The second main damper 23 in this embodiment is a main flue cutoff damper.
In this embodiment, the main flue 2 is a high-temperature flue; the third sub-flue 7 is a low-temperature flue. The flue gas directly discharged from the total oxygen kiln is high-temperature flue gas, the temperature of the high-temperature flue gas is about 1300 ℃, the flue gas discharged from the waste heat boiler 4 is low-temperature flue gas, and the temperature of the low-temperature flue gas is 210 ℃. In this embodiment, the second induced draft fan 72 is used to extract part of the low-temperature flue gas discharged from the waste heat boiler 4, that is, the second induced draft fan 72 is used to pressurize the part of the low-temperature flue gas discharged from the waste heat boiler 4, and the part of the low-temperature flue gas is sent to the air charging port 21 through the third flue branch 7 to be mixed with the high-temperature flue gas in the main flue 2, so as to reduce the temperature of the flue gas in the main flue 2 to about 600 ℃ or lower than the temperature, specifically, the temperature of the mixed flue gas in this embodiment is 600 ℃, the mixed flue gas generates steam for production or power generation after being subjected to heat exchange by the waste heat boiler 4, and the like, thereby achieving the purpose of reducing the temperature of the high-temperature flue gas discharged from the total oxygen kiln by using the low-temperature flue gas discharged from the waste heat boiler 4, and being beneficial to reducing the total amount of flue gas which needs to be subjected to, and the purposes of energy conservation and consumption reduction are realized.
In the method for recycling the flue gas waste heat in the embodiment, the smoke outlet of the total oxygen kiln particularly discharges the flue gas with the temperature of 1300 ℃ into the main flue 2; the exhaust port of the waste heat boiler 4 specifically exhausts the flue gas with the temperature of 210 ℃ into the third sub-flue 7, the flue gas with the temperature of 210 ℃ enters the main flue 2 through the third sub-flue 7 and the air charging port 21, and is mixed with the flue gas with the temperature of 1300 ℃ exhausted by the smoke exhaust equipment 1 to form mixed flue gas with the temperature of 600 ℃, and the mixed flue gas flows into the waste heat boiler 4 through the first sub-flue 3.
As shown in fig. 1, in the present embodiment, a fourth damper 54, a fifth damper 55, and a third induced draft fan 56 are further installed in the second sub-flue 5. And the second branch damper 51, the first induced draft fan 52, the fourth branch damper 54, the environmental protection device 53, the third induced draft fan 56 and the fifth branch damper 55 are sequentially distributed on the second branch flue 5 along the flowing direction of the flue gas. The first induced draft fan 52 is used for extracting a part of the flue gas discharged by the waste heat boiler 4 as required, pressurizing the part of the flue gas and then delivering the pressurized part of the flue gas to the environmental protection device 53, and performing environmental protection treatment on the flue gas by using the environmental protection device 53, including desulfurization, dust removal and the like, and the third induced draft fan 56 is used for pressurizing the flue gas discharged by the environmental protection device 53 as required, delivering the part of the flue gas to the chimney 6 and discharging the flue gas to the outside by using the chimney 6. The fourth damper plate 54 is used for controlling the on-off of the part of the second branch flue 5 between the first induced draft fan 52 and the environmental protection device 53, and the fifth damper plate 55 is used for controlling the on-off of the part of the second branch flue 5 between the third induced draft fan 56 and the chimney 6. In this embodiment, the environmental protection device 53 is a desulfurization and dust removal device.
As shown in fig. 1, in this embodiment, a sixth branch flue 73 is further installed on the third branch flue 7, and the sixth branch flue 73 is located between the second induced draft fan 72 and the air charging opening 21 and is used for controlling on/off of the portion of the third branch flue 7 located between the second induced draft fan 72 and the air charging opening 21.
In this embodiment, the main flue 2 is provided with a pressure detection sensor, the pressure detection sensor is located between the air charging port 21 and the smoke discharge port, and the pressure detection sensor is used for detecting the pressure of the mixed smoke in the main flue 2. And the pressure detection sensor is connected with a controller, and the controller is connected with a frequency converter of the first induced draft fan 52 and a frequency converter of the second induced draft fan 72. When the device is used, the pressure detection sensor detects the air pressure of the mixed flue gas in the main flue 2 and sends an air pressure signal to the controller, and the controller controls the working states of the frequency converter of the first induced draft fan 52 and the frequency converter of the second induced draft fan 72 according to the air pressure, so that the control of the sizes of the induced draft force generated by the first induced draft fan 52 and the induced draft force generated by the second induced draft fan 72 is realized.
In the invention, part of low-temperature flue gas discharged by the waste heat boiler 4 is used as cold air to be mixed with high-temperature flue gas to obtain mixed flue gas with required temperature, so that the total amount of the flue gas discharged by the waste heat boiler 4 is greatly reduced compared with the total amount of the flue gas discharged by the waste heat boiler 4 when external air is used as a cold air charging medium, the amount of the flue gas which needs to be treated by an environment-friendly device 53 with the functions of desulfurization, dust removal and the like is reduced, and the method has obvious effect on reducing the investment cost and the operation cost of the part of equipment.
The flue gas waste heat recycling system is not limited to low-temperature flue gas utilization of the glass oxy-fuel kiln and the waste heat boiler 4, and is suitable for systems which do not have a melting furnace regenerator, have a flue gas temperature of over 600 ℃, and need to carry out waste heat utilization and environmental protection treatment after cold air is added to the high-temperature flue gas to reduce the temperature. Meanwhile, the flue gas waste heat recycling system and the flue gas waste heat recycling method greatly reduce the flue gas volume of the post-melting furnace of the waste heat boiler 4, reduce the total amount of the flue gas which needs to be subjected to environment-friendly treatment, and effectively reduce the investment and the operation cost of the environment-friendly equipment.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a flue gas waste heat system of recycling, is including being used for total flue (2) that are linked together with the exhaust port of fume extractor (1), exhaust-heat boiler (4) that are linked together through first branch flue (3) and total flue (2), chimney (6) that are linked together through second branch flue (5) and exhaust port of exhaust-heat boiler (4), its characterized in that, exhaust port of exhaust-heat boiler (4) is linked together through third branch flue (7) and the wind gap (21) of adding of seting up on total flue (2).
2. The flue gas waste heat recycling system according to claim 1, characterized in that: install first total flashboard (22) on total flue (2), just first total flashboard (22) are located total smoke inlet of total flue (2) and are converted between wind gap (21), total smoke inlet and the smoke exhaust port of fume extractor (1) of total flue (2) are linked together.
3. The flue gas waste heat recycling system according to claim 1, characterized in that: and a first branch damper plate (31) is arranged on the first branch flue (3).
4. The flue gas waste heat recycling system according to claim 1, characterized in that: and a second branch damper plate (51) is arranged on the second branch flue (5).
5. The flue gas waste heat recycling system according to claim 1, characterized in that: and a first induced draft fan (52) is installed on the second sub-flue (5).
6. The flue gas waste heat recycling system according to claim 1, characterized in that: and the second sub-flue (5) is provided with an environment-friendly device (53).
7. The flue gas waste heat recycling system according to claim 1, characterized in that: and a third split damper (71) is installed on the third split flue (7).
8. The flue gas waste heat recycling system according to claim 1, characterized in that: and a second induced draft fan (72) is installed on the third flue sub-division (7).
9. The flue gas waste heat recycling system according to claim 1, characterized in that: the total smoke outlet of the total flue (2) is communicated with a chimney (6), a branch smoke outlet is formed in the total flue (2), the first branch flue (3) is communicated with the branch smoke outlet, a second total flashboard (23) is installed on the total flue (2), and the second total flashboard (23) is located between the branch smoke outlet and the total smoke outlet.
10. A flue gas waste heat recycling method using the flue gas waste heat recycling system according to any one of claims 1 to 9, comprising the steps of:
the smoke outlet of the smoke exhaust equipment (1) exhausts the smoke with the temperature higher than 600 ℃ into the main flue (2); the smoke outlet of the waste heat boiler (4) discharges the smoke with the temperature lower than 600 ℃ into the third branch flue (7), the smoke with the temperature lower than 600 ℃ enters the main flue (2) through the third branch flue (7) and the air charging port (21), and is mixed with the smoke with the temperature higher than 600 ℃ discharged by the smoke discharging equipment (1) to form mixed smoke, and the mixed smoke flows into the waste heat boiler (4) through the first branch flue (3).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047658A (en) * | 2012-12-26 | 2013-04-17 | 江苏鹏鹞环境工程承包有限公司 | Comprehensive incinerator for three wastes |
| CN204188007U (en) * | 2014-08-04 | 2015-03-04 | 常州德峰节能电力工程技术有限公司 | A kind of energy saver opening smoke hood type silicon system mineral heating furnace flue and recycle |
| CN106288833A (en) * | 2016-09-23 | 2017-01-04 | 天津闪速炼铁技术有限公司 | A kind of method improving flash furnace west heat boiler operating rate and blood circulation |
| CN106969640A (en) * | 2017-04-21 | 2017-07-21 | 中国船舶重工集团公司第七O三研究所无锡分部 | Mineral hot furnace waste heat recovery recirculating system and method |
-
2018
- 2018-10-10 CN CN201811175305.0A patent/CN111023844A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047658A (en) * | 2012-12-26 | 2013-04-17 | 江苏鹏鹞环境工程承包有限公司 | Comprehensive incinerator for three wastes |
| CN204188007U (en) * | 2014-08-04 | 2015-03-04 | 常州德峰节能电力工程技术有限公司 | A kind of energy saver opening smoke hood type silicon system mineral heating furnace flue and recycle |
| CN106288833A (en) * | 2016-09-23 | 2017-01-04 | 天津闪速炼铁技术有限公司 | A kind of method improving flash furnace west heat boiler operating rate and blood circulation |
| CN106969640A (en) * | 2017-04-21 | 2017-07-21 | 中国船舶重工集团公司第七O三研究所无锡分部 | Mineral hot furnace waste heat recovery recirculating system and method |
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Application publication date: 20200417 |