CN112902682A - High temperature kiln flue gas waste heat recovery system - Google Patents
High temperature kiln flue gas waste heat recovery system Download PDFInfo
- Publication number
- CN112902682A CN112902682A CN202110200118.9A CN202110200118A CN112902682A CN 112902682 A CN112902682 A CN 112902682A CN 202110200118 A CN202110200118 A CN 202110200118A CN 112902682 A CN112902682 A CN 112902682A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- steam
- heat recovery
- pipeline
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- 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
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
Abstract
The invention discloses a high-temperature kiln flue gas waste heat recovery system, which comprises: the system comprises a first waste heat recovery boiler, a denitration system and a second waste heat recovery boiler, wherein the first waste heat recovery boiler is provided with a first flue gas inlet and a first flue gas outlet, and the first flue gas inlet is communicated with the high-temperature kiln through a first flue gas pipeline; the denitration system is provided with a second flue gas inlet and a second flue gas outlet, the second flue gas inlet faces the first flue gas outlet, and the first flue gas outlet is communicated with the second flue gas inlet through a second flue gas pipeline; the second waste heat recovery boiler is provided with a third flue gas inlet and a third flue gas outlet, the third flue gas inlet faces the second flue gas outlet, the second flue gas outlet is communicated with the third flue gas inlet through a third flue gas pipeline, and the third flue gas outlet is connected with a smoke exhaust pipe. The high-temperature kiln flue gas waste heat recovery system disclosed by the invention has the advantages of short flue gas pipeline, flexible arrangement, compact structure, small occupied space, high heat recovery efficiency, small wind resistance and higher economy.
Description
Technical Field
The invention relates to the technical field of industrial production, in particular to a high-temperature kiln flue gas waste heat recovery system.
Background
In various industrial kilns, a flue gas treatment system is mostly arranged, and the flue gas treatment system is used for recovering the waste heat of the flue gas and removing a large amount of NO contained in the flue gasxAnd the like. The flue gas temperature that high temperature kilns such as glass kiln produced is higher than the required temperature of denitration, among the flue gas processing system of high temperature kilns such as current glass kiln, including deNOx systems and an integral waste heat recovery boiler, the flue gas is after several groups heat transfer face heat transfer before the waste heat recovery boiler, the temperature drops to the required temperature of denitration, the flue gas that the temperature dropped to the required temperature of denitration is drawn forth from the middle part of waste heat recovery boiler, send to deNOx systems and carry out the denitration, the flue gas after the denitration is got back to waste heat recovery boiler again and is continued the heat transfer. In the existing flue gas treatment system of the high-temperature kiln, the system flue is long, the occupied area is large, and the heat loss and the wind resistance of flue gas are large.
Disclosure of Invention
The invention mainly aims to provide a high-temperature kiln flue gas waste heat recovery system, and aims to solve the technical problems of large occupied area, large flue gas heat loss and large wind resistance caused by long system flues in the prior art.
In order to achieve the above object, the present invention provides a flue gas waste heat recovery system for a high temperature kiln, comprising:
the first waste heat recovery boiler is provided with a first flue gas inlet and a first flue gas outlet, and the first flue gas inlet is communicated with the high-temperature kiln through a first flue gas pipeline;
the denitration system is provided with a second flue gas inlet and a second flue gas outlet, the second flue gas inlet faces the first flue gas outlet, and the first flue gas outlet is communicated with the second flue gas inlet through a second flue gas pipeline;
and the second waste heat recovery boiler is provided with a third flue gas inlet and a third flue gas outlet, the third flue gas inlet faces the second flue gas outlet, the second flue gas outlet is communicated with the third flue gas inlet through a third flue gas pipeline, and the third flue gas outlet is connected with a smoke exhaust pipe.
Optionally, a first flue gas valve is arranged on the first flue gas pipeline, and a second flue gas valve is arranged on the second flue gas pipeline;
the high-temperature kiln flue gas waste heat recovery system still includes:
and one end of the fourth flue gas pipeline is communicated with the first flue gas pipeline and is positioned between the first flue gas valve and the high-temperature kiln, the other end of the fourth flue gas pipeline is communicated with the second flue gas pipeline and is positioned between the second flue gas valve and the denitration system, and the fourth flue gas pipeline is provided with a third flue gas valve.
Optionally, a fourth flue gas valve is arranged on the second flue gas pipeline, and a fifth flue gas valve is arranged on the third flue gas pipeline;
the high-temperature kiln flue gas waste heat recovery system still includes:
and one end of the fifth flue gas pipeline is communicated with the second flue gas pipeline and is positioned between the fourth flue gas valve and the first waste heat recovery boiler, the other end of the fifth flue gas pipeline is communicated with the third flue gas pipeline and is positioned between the fifth flue gas valve and the second waste heat recovery boiler, and the fifth flue gas pipeline is provided with a sixth flue gas valve.
Optionally, a seventh flue gas valve is arranged on the third flue gas pipeline, and an eighth flue gas valve is arranged on the flue gas exhaust pipe;
the high-temperature kiln flue gas waste heat recovery system still includes:
and one end of the sixth flue gas pipeline is communicated with the third flue gas pipeline and is positioned between the seventh flue gas valve and the denitration system, the other end of the sixth flue gas pipeline is communicated with the smoke exhaust pipe and is positioned between the eighth flue gas valve and the output end of the smoke exhaust pipe, and the sixth flue gas pipeline is provided with a ninth flue gas valve.
Optionally, a desulfurization and dust removal system is arranged on the smoke exhaust pipe.
Optionally, the input end of the desulfurization and dust removal system is provided with a tenth flue gas valve, and the output end of the desulfurization and dust removal system is provided with an eleventh flue gas valve;
the high-temperature flue gas treatment system further comprises:
and one end of the seventh flue gas pipeline is communicated with the smoke exhaust pipe between the desulfurization and dust removal system and the second waste heat recovery boiler and is positioned between the tenth flue gas valve and the second waste heat recovery pipeline, the other end of the seventh flue gas pipeline is communicated with the smoke exhaust pipe between the desulfurization and dust removal system and the output end of the smoke exhaust pipe and is positioned between the eleventh flue gas valve and the output end of the smoke exhaust pipe, and the seventh flue gas pipeline is provided with a twelfth flue gas valve.
Optionally, an induced draft fan is arranged on the smoke exhaust pipe, and the output end of the smoke exhaust pipe is communicated with a chimney.
Optionally, the first heat recovery boiler comprises:
the first furnace body is internally provided with a first evaporator assembly and a superheater assembly, and a first flue gas inlet and a first flue gas outlet are formed in the first furnace body;
the first steam drum is provided with a first steam-water inlet, a second steam-water inlet, a first steam-water outlet and a second steam-water outlet, the first steam-water outlet is communicated with the input end of the first evaporator assembly through a first steam-water pipeline, the second steam-water outlet is communicated with the input end of the superheater assembly through a second steam-water pipeline, and the output end of the first evaporator assembly is communicated with the first steam-water inlet through a third steam-water pipeline;
the second heat recovery boiler comprises:
the second furnace body is internally provided with a second evaporator assembly and an economizer assembly, the second furnace body is provided with a third flue gas inlet and a third flue gas outlet, and the input end of the economizer assembly is communicated with water supply equipment;
and the second steam pocket is provided with a third steam-water inlet, a fourth steam-water inlet, a third steam-water outlet and a fourth steam-water outlet, the third steam-water outlet is communicated with the input end of the second evaporator assembly through a fourth steam-water pipeline, the fourth steam-water outlet is communicated with the input end of the superheater assembly through a fifth steam-water pipeline, the output end of the second evaporator assembly is communicated with the third steam-water inlet through a sixth steam-water pipeline, and the output end of the economizer assembly is communicated with the second steam-water inlet and the fourth steam-water inlet through a seventh steam-water pipeline.
Optionally, a first valve is arranged at the second steam-water inlet, and a second valve is arranged at the fourth steam-water inlet.
Optionally, a first steam valve is arranged on the second steam-water pipeline, and a second steam valve is arranged on the fifth steam-water pipeline;
the second heat recovery boiler further comprises:
and one end of the saturated steam discharge pipe is communicated with the fifth steam-water pipeline and is positioned between the second steam-water valve and the second steam drum, and the saturated steam discharge pipe is provided with a third steam-water valve.
In the technical scheme of the invention, a first waste heat recovery boiler and a second waste heat recovery boiler are respectively arranged at two sides of a denitration system, a first flue gas outlet of the first waste heat recovery boiler faces to a second flue gas inlet of the denitration system and is communicated with the second flue gas inlet through a second flue gas pipeline, a third flue gas inlet of the second waste heat recovery boiler faces to a second flue gas outlet of the denitration system and is communicated with the second flue gas outlet through a third flue gas pipeline, and the second flue gas pipeline and the third flue gas pipeline are short in length, so that the problem that when one waste heat recovery boiler is used, because the denitration system has large volume, an input end and an output end which are far away from each other need to be respectively communicated with different sections of the waste heat recovery boiler, the flue gas pipeline is too long; the first waste heat recovery boiler, the denitration system and the second waste heat recovery boiler are flexibly arranged, so that the whole high-temperature kiln flue gas waste heat recovery system is small in occupied area and more compact in arrangement; due to the shortening of the flue gas pipeline, the heat loss caused by long-distance conveying of the flue gas in the flue gas pipeline can be reduced, and the heat recovery efficiency is high; in addition, due to the shortening of the flue gas pipeline, the wind resistance of the flue gas in the conveying process of the flue gas pipeline can be reduced, the conveying efficiency of the flue gas is improved, and the energy consumption of induced draft equipment added due to overcoming of the wind resistance can be reduced; the shortening of the flue gas pipeline can also reduce the investment of a bracket for supporting the flue gas pipeline and the flue gas pipeline, and is more economic.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of a flue gas waste heat recovery system of a high-temperature kiln provided by the invention;
the reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating 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 meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The application provides a high temperature kiln flue gas waste heat recovery system, and the flue gas pipeline is short, arranges nimble, compact structure, and occupation space is little, and heat recovery efficiency is high, and the windage is little, and is more economical.
As shown in fig. 1, in an embodiment of the flue gas waste heat recovery system of the high temperature kiln provided by the present invention, the flue gas waste heat recovery system of the high temperature kiln includes:
the first waste heat recovery boiler is provided with a first flue gas inlet and a first flue gas outlet, and the first flue gas inlet is communicated with the high-temperature kiln 110 through a first flue gas pipeline 810;
the denitration system 120 is provided with a second flue gas inlet and a second flue gas outlet, the second flue gas inlet faces the first flue gas outlet, and the first flue gas outlet is communicated with the second flue gas inlet through a second flue gas pipeline 820;
and a second waste heat recovery boiler having a third flue gas inlet and a third flue gas outlet, the third flue gas inlet facing the second flue gas outlet, the second flue gas outlet being communicated with the third flue gas inlet through a third flue gas pipeline 830, the third flue gas outlet being connected to a smoke discharge pipe 890.
The high-temperature kiln 110 refers to a kiln in which the temperature of flue gas generated in the kiln is high and the flue gas generated in the kiln needs to be cooled to meet the denitration temperature requirement. For example, for the glass kiln, the temperature of the generated flue gas is between 450-550 ℃, the denitration system 120 can be an SCR denitration system, and the requirement of the SCR denitration system for the temperature of the flue gas is between 320-380 ℃, so that the flue gas generated by the glass kiln cannot directly enter the denitration system 120 for denitration. If adopt an integral waste heat recovery boiler, the flue gas that high temperature kiln 110 produced gets into in the waste heat recovery boiler earlier, and the flue gas is after several groups heat transfer face heat exchanges in the waste heat recovery boiler in the front in, and the flue gas temperature falls to the required temperature range of denitration, and the flue gas that the temperature falls to the required temperature range of denitration is drawn forth from waste heat recovery boiler middle part through the flue gas pipeline and is got into deNOx systems 120, and the flue gas after rethread flue gas pipeline after carrying out the denitration is in the waste heat recovery boiler. Other supporting equipment is needed around the waste heat recovery boiler, the denitration system 120 is large in size, the input end and the output end of the denitration system 120 are far away from each other, the waste heat recovery boiler in the same position needs to be connected with the input end and the output end of the denitration system 120 which are far away from each other, the needed flue gas pipeline is long, and due to the fact that the flue gas pipeline is long, when the flue gas is conveyed in the flue gas pipeline, heat loss is large, and heat recovery efficiency is low; meanwhile, because the flue gas pipeline is long, the internal wind resistance is large, and the running power consumption of the fan for overcoming the wind resistance is also increased.
In the above embodiment, by respectively providing the first waste heat recovery boiler and the second waste heat recovery boiler on two sides of the denitration system 120, the first flue gas outlet of the first waste heat recovery boiler faces the second flue gas inlet of the denitration system 120 and makes the two communicated through the second flue gas pipeline 820, the third flue gas inlet of the second waste heat recovery boiler faces the second flue gas outlet of the denitration system 120 and makes the two communicated through the third flue gas pipeline 830, the first waste heat recovery boiler can be arranged close to the second flue gas inlet of the denitration system 120, the second waste heat recovery boiler can be arranged close to the second flue gas outlet of the denitration system 120, the second flue gas pipeline 820 and the third flue gas pipeline 830 are short in length, so that when one waste heat recovery boiler is used, the denitration system 120 has a large volume, so that the input end and the output end which are far away from each other are respectively communicated with different sections of the waste heat recovery boiler, thereby causing the problem of overlong flue gas pipeline; the first waste heat recovery boiler, the denitration system 120 and the second waste heat recovery boiler are flexibly arranged, so that the whole high-temperature kiln flue gas waste heat recovery system is small in occupied area and more compact in arrangement; due to the shortening of the flue gas pipeline, the heat loss caused by long-distance conveying of the flue gas in the flue gas pipeline can be reduced, and the heat recovery efficiency is high; in addition, due to the shortening of the flue gas pipeline, the wind resistance of the flue gas in the conveying process of the flue gas pipeline can be reduced, the conveying efficiency of the flue gas is improved, and the energy consumption of induced draft equipment added due to overcoming of the wind resistance can be reduced; the shortening of the flue gas pipeline can also reduce the investment of a bracket for supporting the flue gas pipeline and the flue gas pipeline, and is more economic.
Because the flue gas that high temperature kiln 110 produced contains a large amount of dusts, high temperature kiln flue gas waste heat recovery system all can adhere to a large amount of dusts in operating a period back, each equipment such as first waste heat recovery boiler, deNOx systems 120, second waste heat recovery boiler and each flue gas pipeline, influences heat recovery efficiency, and has great potential safety hazard, and shut down to overhaul, clear up, can cause great economic loss and environmental pollution again.
As a further scheme of the above embodiment, the first flue gas pipe 810 is provided with a first flue gas valve 501, and the second flue gas pipe 820 is provided with a second flue gas valve 502;
the high-temperature kiln flue gas waste heat recovery system still includes:
one end of the fourth flue gas pipeline 840 is communicated with the first flue gas pipeline 810 and is located between the first flue gas valve 501 and the high-temperature kiln 110, the other end of the fourth flue gas pipeline 840 is communicated with the second flue gas pipeline 820 and is located between the second flue gas valve 502 and the denitration system 120, and the fourth flue gas pipeline 840 is provided with a third flue gas valve 503.
In the further scheme of the above embodiment, the first flue gas valve 501 and the second flue gas valve 502 are closed by the accessible, isolate the first waste heat recovery boiler, be convenient for clear up and maintain the first waste heat recovery boiler, open the third flue gas valve 503, through the fourth flue gas pipeline 840, can be when the first flue gas valve 501 and the second flue gas valve 502 are closed, make the flue gas get into the equipment behind the first waste heat recovery boiler through the fourth flue gas pipeline 840, can be when clearing up and maintaining the first waste heat recovery boiler, do not shut down, other equipment normal use, reduce as far as possible because of clear up and maintain the first waste heat recovery boiler and make the economic loss and the environmental pollution that whole flue gas processing system shut down and cause.
In addition, when the temperature of the flue gas generated by the high-temperature kiln 110 is low due to various reasons, the opening degrees of the third flue gas valve 503, the first flue gas valve 501 and the second flue gas valve 502 can be adjusted, so that part of the flue gas directly enters the denitration system 120 without passing through the first waste heat recovery boiler, the temperature of the flue gas entering the denitration system 120 is increased, even the first flue gas valve 501 and the second flue gas valve 502 can be closed, the third flue gas valve 503 is completely opened, the flue gas generated by the high-temperature kiln 110 is conveyed into the denitration system 120 through the fourth flue gas pipeline 840 for denitration, and the heat is recovered through the second waste heat recovery boiler after denitration is completed.
As a further scheme of the above embodiment, the second flue gas pipe 820 is provided with a fourth flue gas valve 504, and the third flue gas pipe 830 is provided with a fifth flue gas valve 505;
the high-temperature kiln flue gas waste heat recovery system still includes:
one end of the fifth flue gas pipe 850 is communicated with the second flue gas pipe 820 and is located between the fourth flue gas valve 504 and the first waste heat recovery boiler, the other end of the fifth flue gas pipe 850 is communicated with the third flue gas pipe 830 and is located between the fifth flue gas valve 505 and the second waste heat recovery boiler, and the fifth flue gas pipe 850 is provided with a sixth flue gas valve 506.
In the further scheme of the above embodiment, the fourth flue gas valve 504 and the fifth flue gas valve 505 can be closed, the denitration system 120 is isolated, the denitration system 120 is convenient to clean and maintain, the sixth flue gas valve 506 is opened, the fifth flue gas pipeline 850 is used, when the fourth flue gas valve 504 and the fifth flue gas valve 505 are closed, flue gas can enter equipment behind the denitration system 120 through the fifth flue gas pipeline 850, the denitration system 120 can be cleaned and maintained without shutdown, other equipment can be normally used, and economic loss and environmental pollution caused by shutdown of the whole flue gas treatment system due to cleaning and maintaining of the denitration system 120 are reduced as much as possible.
As a further scheme of the above embodiment, the third flue gas pipeline 830 is provided with a seventh flue gas valve 507, and the smoke exhaust pipe 890 is provided with an eighth flue gas valve;
the high-temperature kiln flue gas waste heat recovery system still includes:
a sixth flue gas pipeline 860, one end of which is communicated with the third flue gas pipeline 830 and is located between the seventh flue gas valve 507 and the denitration system 120, the other end of which is communicated with the smoke exhaust pipe 890 and is located between the eighth flue gas valve and the output end of the smoke exhaust pipe 890, and the sixth flue gas pipeline 860 is provided with a ninth flue gas valve 509.
In the further scheme of above-mentioned embodiment, the accessible closes seventh flue gas valve 507 and eighth flue gas valve, keep apart the second waste heat recovery boiler, be convenient for clear up and maintain the second waste heat recovery boiler, open ninth flue gas valve 509, through sixth flue gas pipeline 860, can be when seventh flue gas valve 507 and eighth flue gas valve are closed, make the flue gas get into smoke pipe 890 through sixth flue gas pipeline 860, can be when clearing up and maintaining the second waste heat recovery boiler, do not shut down, other equipment normal use, reduce as far as possible and make the economic loss and the environmental pollution that whole flue gas processing system shut down and cause because of clearing up and maintaining the second waste heat recovery boiler.
As a further proposal of the above embodiment, the smoke exhaust pipe 890 is provided with a desulfurization dust removal system 130.
In a further scheme of the above embodiment, the desulfurization and dust removal system 130 can be used for desulfurization and dust removal of the flue gas in the smoke discharge pipe 890, so as to ensure that the flue gas emission meets the standard.
As a further solution to the above embodiment, the input end of the desulfurization dust-removal system 130 has a tenth flue gas valve 510, and the output end has an eleventh flue gas valve 511;
the high-temperature flue gas treatment system further comprises:
and one end of the seventh flue gas pipeline 870 is communicated with the smoke discharge pipe 890 between the desulfurization and dust removal system 130 and the second waste heat recovery boiler and is positioned between the tenth flue gas valve 510 and the second waste heat recovery pipeline, the other end of the seventh flue gas pipeline 870 is communicated with the smoke discharge pipe 890 between the desulfurization and dust removal system 130 and the output end of the smoke discharge pipe 890 and is positioned between the eleventh flue gas valve 511 and the output end of the smoke discharge pipe 890, and the seventh flue gas pipeline 870 is provided with a twelfth flue gas valve 512.
Wherein the eighth flue gas valve may be the same as the tenth flue gas valve 510 or the eleventh flue gas valve 511.
In the further scheme of the above embodiment, the tenth flue gas valve 510 and the eleventh flue gas valve 511 may be closed to isolate the desulfurization and dust removal system 130, so as to facilitate cleaning and maintenance of the desulfurization and dust removal system 130, the twelfth flue gas valve 512 is opened, and the seventh flue gas pipeline 870 is used to enable flue gas to enter the smoke exhaust pipe 890 behind the desulfurization and dust removal system 130 through the seventh flue gas pipeline 870 when the tenth flue gas valve 510 and the eleventh flue gas valve 511 are closed, so that maintenance and cleaning of the desulfurization and dust removal system 130 can be performed without shutdown, and other devices can be normally used, thereby reducing economic loss and environmental pollution caused by shutdown of the whole flue gas treatment system due to cleaning and maintenance of the desulfurization and dust removal system 130 as much as possible.
As a further scheme of the above embodiment, the induced draft fan 140 is arranged on the smoke exhaust pipe 890, and the output end of the smoke exhaust pipe 890 is communicated with the chimney 150.
In the further scheme of above-mentioned embodiment, through draught fan 140, can provide power for the flue gas flow in the system, do benefit to the flue gas of high temperature and flow fast, improve heat recovery efficiency, set up chimney 150, do benefit to and discharge fume, avoid discharging fume highly low personnel and the equipment that causes the influence to ground.
As a further aspect of the foregoing embodiment, the high-temperature flue gas treatment system further includes:
an eighth flue gas pipe 880, one end of which is communicated with the first flue gas pipe 810 and is located between the first flue gas valve 501 and the high temperature kiln 110, and the other end of which is communicated with the chimney 150, wherein the eighth flue gas pipe 880 is provided with a thirteenth flue gas valve 513. And a thirteenth flue gas valve 513 is opened, and the flue gas generated by the high-temperature kiln 110 can be directly sent into the chimney 150 through an eighth flue gas pipeline 880 for emission.
As a further aspect of the above embodiment, the first heat recovery boiler includes:
a first furnace body 210 having a first evaporator element 220 and a superheater element 230 therein, and having a first flue gas inlet and a first flue gas outlet thereon;
the first steam drum 240 is provided with a first steam-water inlet, a second steam-water inlet, a first steam-water outlet and a second steam-water outlet, the first steam-water outlet is communicated with the input end of the first evaporator assembly 220 through a first steam-water pipeline 601, the second steam-water outlet is communicated with the input end of the superheater assembly 230 through a second steam-water pipeline 602, and the output end of the first evaporator assembly 220 is communicated with the first steam-water inlet through a third steam-water pipeline 603;
the second heat recovery boiler comprises:
the second furnace body 310 is internally provided with a second evaporator assembly 320 and an economizer assembly 330, the second furnace body is provided with a third flue gas inlet and a third flue gas outlet, and the input end of the economizer assembly 330 is communicated with water supply equipment;
and the second steam pocket 340 is provided with a third steam-water inlet, a fourth steam-water inlet, a third steam-water outlet and a fourth steam-water outlet, the third steam-water outlet is communicated with the input end of the second evaporator assembly 320 through a fourth steam-water pipeline 604, the fourth steam-water outlet is communicated with the input end of the superheater assembly 230 through a fifth steam-water pipeline 605, the output end of the second evaporator assembly 320 is communicated with the third steam-water inlet through a sixth steam-water pipeline 606, and the output end of the economizer assembly 330 is communicated with the second steam-water inlet and the fourth steam-water inlet through a seventh steam-water pipeline 607.
The first evaporator assembly 220, the second evaporator assembly 320, the superheater assembly 230, and the economizer assembly 330 can each be provided in one or more stages as desired.
Water is supplied into the economizer assembly 330 through water supply equipment, the water is heated by the economizer assembly 330 and then is respectively sent into the first steam pocket 240 and the second steam pocket 340, the first steam pocket 240 and the second steam pocket 340 absorb the heat of flue gas to generate saturated steam in a circulating system formed by the first evaporator assembly 220 and the second evaporator assembly 320, the saturated steam generated by the first steam pocket 240 and the second steam pocket 340 enters the superheater assembly 230 to absorb heat to form superheated steam, the superheater assembly 230 supplies the superheated steam to steam consumption equipment, and the heat supply efficiency is high.
As a further solution of the above embodiment, a first valve 901 is provided at the second steam-water inlet, and a second valve 902 is provided at the fourth steam-water inlet.
In a further version of the above embodiment, the water level in first drum 240 and second drum 340 may be adjusted by controlling first valve 901 and second valve 902.
As a further solution of the above embodiment, the second steam-water pipeline 602 is provided with a first steam-water valve 701, and the fifth steam-water pipeline 605 is provided with a second steam-water valve 702;
the second heat recovery boiler further comprises:
one end of the saturated steam discharge pipe 610 is communicated with the fifth steam-water pipeline 605 and is located between the second steam-water valve 702 and the second steam drum 340, and the saturated steam discharge pipe 610 is provided with a third steam-water valve 703.
In a further scheme of the above embodiment, the first steam-water valve 701, the second steam-water valve 702, the first valve 901 and the second valve 902 may be controlled to enable the first heat recovery boiler to operate or not to operate, when the first heat recovery boiler is isolated for maintenance, the supply of steam into the corresponding first steam drum 240 may be stopped, and when the first heat recovery boiler is shut down, the third steam-water valve 703 may be opened, and saturated steam may be supplied to the steam consuming equipment through the saturated steam discharge pipe 610, so as to ensure the steam consuming of the steam consuming equipment.
The superheated steam can be supplied to a waste heat power station for power generation, and the saturated steam can be supplied to production and living equipment of a plant area for production and living of the plant area.
The high-temperature kiln flue gas waste heat recovery system that this application provided can be high-temperature kiln flue gas waste heat recovery power generation system, and first waste heat recovery boiler and second waste heat recovery boiler can be waste heat power generation boiler.
The first and second valves 901 and 902 may be electrically-operated control valves, a water level gauge 420 may be provided on the first and second drums 240 and 340, and a DCS control system 410 may be provided, the DCS control system 410 communicating with the first and second valves 901 and 902 and controlling the first and second valves 901 and 902, the DCS controller communicating with the water level gauge 420 on the first and second drums 240 and 340 and controlling the first and second valves 901 and 902 according to water levels in the first and second drums 240 and 340.
In an embodiment of the flue gas waste heat recovery system of the high-temperature kiln provided by the invention, the flue gas waste heat recovery system of the high-temperature kiln comprises: the system comprises a first waste heat recovery boiler, a denitration system 120, a second waste heat recovery boiler, a desulfurization and dust removal system 130, an induced draft fan 140 and a chimney 150.
The first waste heat recovery boiler comprises a first furnace body 210 and a first steam drum 240, wherein a first evaporator assembly 220 and a superheater assembly 230 are arranged in the first furnace body 210, and a first flue gas inlet and a first flue gas outlet are arranged on the first furnace body 210.
The denitration system 120 has a second flue gas inlet and a second flue gas outlet.
The second waste heat recovery boiler comprises a second furnace body 310 and a second steam pocket 340, the first furnace body 210 is internally provided with a second evaporator assembly 320 and an economizer assembly 330, and the second furnace body 310 is provided with a third flue gas inlet and a third flue gas outlet.
First flue gas inlet communicates with high temperature kiln 110 through first flue gas pipeline 810, the second flue gas inlet communicates with first exhanst gas outlet through second flue gas pipeline 820, the third flue gas inlet communicates with second exhanst gas outlet through third flue gas pipeline 830, be connected with smoke exhaust pipe 890 on the third exhanst gas outlet, smoke exhaust pipe 890's output and chimney 150 intercommunication, desulfurization dust pelletizing system 130 and draught fan 140 set gradually on smoke exhaust pipe 890 along the flue gas flow direction, desulfurization dust pelletizing system 130 is between draught fan 140 and second waste heat recovery boiler.
The first steam drum 240 has a first steam inlet, a second steam inlet, a first steam outlet and a second steam outlet, the first steam outlet is communicated with the input end of the first evaporator assembly 220 through a first steam pipe 601, the second steam outlet is communicated with the input end of the superheater assembly 230 through a second steam pipe 602, and the output end of the first evaporator assembly 220 is communicated with the first steam inlet through a third steam pipe 603.
The second steam pocket 340 is provided with a third steam-water inlet, a fourth steam-water inlet, a third steam-water outlet and a fourth steam-water outlet, the third steam-water outlet is communicated with the input end of the second evaporator assembly 320 through a fourth steam-water pipeline 604, the fourth steam-water outlet is communicated with the input end of the superheater assembly 230 through a fifth steam-water pipeline 605, the output end of the second evaporator assembly 320 is communicated with the third steam-water inlet through a sixth steam-water pipeline 606, and the output end of the economizer assembly 330 is communicated with the second steam-water inlet and the fourth steam-water inlet through a seventh steam-water pipeline 607.
A first valve 901 is arranged at the second steam inlet, a second valve 902 is arranged at the fourth steam inlet, the first valve 901 and the second valve 902 are both electric control valves, water level gauges 420 are arranged in the first steam pocket 240 and the second steam pocket 340, a DCS control system 410 is arranged, the DCS control system 410 is communicated with the first valve 901 and the second valve 902 and controls the first valve 901 and the second valve 902, and a DCS controller is communicated with the water level gauges 420 on the first steam pocket 240 and the second steam pocket 340 and controls the first valve 901 and the second valve 902 according to the water levels in the first steam pocket 240 and the second steam pocket 340.
The second steam line 602 has a first steam valve 701, and the fifth steam line 605 has a second steam valve 702.
The second heat recovery boiler further comprises: one end of the saturated steam discharge pipe 610 is communicated with the fifth steam-water pipeline 605 and is located between the second steam-water valve 702 and the second steam drum 340, and the saturated steam discharge pipe 610 is provided with a third steam-water valve 703.
The water supply device is a water supply pump 160, an output end of the water supply pump 160 is communicated with an input end of the economizer assembly 330 through an eighth steam-water pipeline 608, and the eighth steam-water pipeline 608 is provided with a fourth steam-water valve 704.
The output end of the economizer assembly 330 is provided with a fifth steam-water valve 705, and the economizer further comprises a ninth steam-water pipeline 609, wherein one end of the ninth steam-water pipeline 609 is communicated with the eighth steam-water pipeline 608, the ninth steam-water pipeline is positioned between the fourth steam-water valve 704 and the output end of the feed water pump 160, the other end of the ninth steam-water pipeline 609 is communicated with the seventh steam-water pipeline 607, the fifth steam-water valve 705 is positioned between the ninth steam-water pipeline 609 and the output end of the economizer assembly 330, and the ninth steam-water pipeline 609 is provided with a sixth steam-water valve.
The first flue gas pipeline 810 is provided with a first flue gas valve 501 at a first flue gas inlet, the second flue gas pipeline 820 is provided with a second flue gas valve 502 at a first flue gas outlet, the second flue gas pipeline 820 is provided with a fourth flue gas valve 504 at a second flue gas inlet, the third flue gas pipeline 830 is provided with a fifth flue gas valve 505 at a second flue gas outlet, the third flue gas pipeline 830 is provided with a seventh flue gas valve 507 at a third flue gas inlet, a tenth flue gas valve 510 is arranged at the input end of the desulfurization and dust removal system 130 on a smoke exhaust pipe 890, an eleventh flue gas valve 511 is arranged at the output end of the desulfurization and dust removal system 130 on the smoke exhaust pipe 890, the tenth flue gas valve 510 is arranged between the desulfurization and dust removal system 130 and the second waste heat recovery boiler, and the eleventh flue gas valve 511 is arranged between the desulfurization and dust removal system 130 and the induced.
This high temperature kiln flue gas waste heat recovery system still includes:
one end of the fourth flue gas pipeline 840 is communicated with the first flue gas pipeline 810 and is located between the first flue gas valve 501 and the high-temperature kiln 110, the other end of the fourth flue gas pipeline 840 is communicated with the second flue gas pipeline 820 and is located between the second flue gas valve 502 and the fourth flue gas valve 504, and the fourth flue gas pipeline 840 is provided with a third flue gas valve 503.
And one end of the sixth flue gas pipeline 860 is communicated with the third flue gas pipeline 830 and is positioned between the fifth flue gas valve 505 and the seventh flue gas valve 507, the other end of the sixth flue gas pipeline 860 is communicated with the smoke exhaust pipe 890 and is positioned between the eleventh flue gas valve 511 and the draught fan 140, and the sixth flue gas pipeline 860 is provided with a ninth flue gas valve 509.
One end of the fifth flue gas pipeline 850 is communicated with the fourth flue gas pipeline 840 and is located between the third flue gas valve 503 and the second flue gas pipeline 820, the other end of the fifth flue gas pipeline 850 is communicated with the sixth flue gas pipeline 860 and is located between the ninth flue gas valve 509 and the second flue gas pipeline 820, one end of the fifth flue gas pipeline 850 is communicated with the second flue gas pipeline 820 through the fourth flue gas pipeline 840, the other end of the fifth flue gas pipeline 850 is communicated with the third flue gas pipeline 830 through the sixth flue gas pipeline 860, and the fifth flue gas pipeline 850 is provided with the sixth flue gas valve 506.
One end of the seventh flue gas pipeline 870 is communicated with the sixth flue gas pipeline 860 and is positioned between the ninth flue gas valve 509 and the smoke discharge pipe 890 connected with the sixth flue gas pipeline 860, the other end of the seventh flue gas pipeline 870 is communicated with the smoke discharge pipe 890 and is positioned between the tenth flue gas valve 510 and the second waste heat recovery boiler, one end of the seventh flue gas pipeline 870 is communicated with the third flue gas pipeline 830 through the sixth flue gas pipeline 860, and the seventh flue gas pipeline 870 is provided with a twelfth flue gas valve 512.
And one end of the eighth flue gas pipeline 880 is communicated with the first flue gas pipeline 810 and is positioned between the fourth flue gas pipeline 840 and the high-temperature kiln 110, the other end of the eighth flue gas pipeline 880 is communicated with the chimney 150, and the eighth flue gas pipeline 880 is provided with a thirteenth flue gas valve 513.
During normal operation, a first steam valve 701, a second steam valve 702, a fourth steam valve 704 and a fifth steam valve 705 are opened, a third steam valve 703 and a sixth steam valve 706 are closed, a first flue gas valve 501, a second flue gas valve 502, a fourth flue gas valve 504, a fifth flue gas valve 505, a seventh flue gas valve 507, a tenth flue gas valve 510 and an eleventh flue gas valve 511 are opened, and a third flue gas valve 503, a sixth flue gas valve 506, a ninth flue gas valve 509, a twelfth flue gas valve 512 and a thirteenth flue gas valve 513 are closed. The flue gas generated by the high-temperature kiln 110 sequentially passes through the first waste heat recovery boiler, the denitration system 120, the second waste heat recovery boiler and the desulfurization and dust removal system 130, and is sent to a chimney 150 by an induced draft fan 140 to be discharged; the water provided by the water feeding pump 160 is heated by the economizer assembly 330 of the second heat recovery boiler and then sent to the second steam drum 340 and the first steam drum 240, the natural circulation system formed by the first steam drum 240, the second steam drum 340, the first evaporator assembly 220 and the second evaporator assembly 320 absorbs the heat of the flue gas to generate saturated steam, the DCS control system 410 controls the opening degree of the first valve 901 and the second valve 902 to control the water level of the first steam drum 240 and the second steam drum 340, the saturated steam generated by the first steam drum 240 and the second steam drum 340 is collected to the superheater assembly 230 of the first heat recovery boiler, and the generated superheated steam is sent to steam consuming equipment for use, wherein the steam consuming equipment can be power generation equipment, plant production and living equipment, and the superheated steam can be used for power generation and production and living of the plant.
When the flue gas temperature generated by the high-temperature kiln 110 is lower, the opening degree of the third flue gas valve 503 can be increased by reducing the opening degree of the first flue gas valve 501 on the basis of normal operation, so that part of the flue gas does not pass through the first waste heat recovery boiler, and the flue gas temperature of the denitration system 120 is increased. If necessary, the first flue gas valve 501 and the second flue gas valve 502 may be completely closed, the third flue gas valve 503 may be completely opened, the first steam valve 701, the second steam valve 702, and the first valve 901 may be completely closed, and the third steam valve 703, the fourth steam valve 704, the fifth steam valve 705, and the second valve 902 may be opened. Flue gas that high temperature kiln 110 came out does not pass through first waste heat recovery boiler, directly goes denitration system 120 to denitrate, and rethread second waste heat recovery boiler cooling back gets into desulfurization dust pelletizing system 130, discharges to chimney 150 through draught fan 140, and the produced saturated steam of second waste heat recovery boiler sends to the steam equipment and uses, and the steam equipment this moment can be the production and the living equipment in factory, and the saturated steam can supply the factory life to use.
When the first waste heat recovery boiler needs to be shut down for ash removal or shutdown for maintenance due to faults, the third flue gas valve 503, the fourth flue gas valve 504, the fifth flue gas valve 505, the seventh flue gas valve 507, the tenth flue gas valve 510 and the eleventh flue gas valve 511 are opened, the first flue gas valve 501, the second flue gas valve 502, the sixth flue gas valve 506, the twelfth flue gas valve 512 and the thirteenth flue gas valve 513 are closed, the first steam valve 701, the second steam valve 702 and the first valve 901 are closed, and the third steam valve 703, the fourth steam valve 704, the fifth steam valve 705 and the second valve 902 are opened. The flue gas that high temperature kiln 110 came out directly gets into desulfurization dust pelletizing system 130 after the second waste heat recovery boiler cooling, discharges to chimney 150 through draught fan 140, and the produced saturated steam of second waste heat recovery boiler is sent to the steam equipment and is used, and the steam equipment this moment can be the production and the living equipment of factory, and the saturated steam can supply the factory life to use.
When the second waste heat recovery boiler needs to be shut down for ash removal or shutdown for maintenance due to faults, the first flue gas valve 501, the second flue gas valve 502, the fourth flue gas valve 504, the fifth flue gas valve 505 and the ninth flue gas valve 509 are opened, the third flue gas valve 503, the sixth flue gas valve 506, the seventh flue gas valve 507, the tenth flue gas valve 510, the eleventh flue gas valve 511, the twelfth flue gas valve 512 and the thirteenth flue gas valve 513 are closed, the first steam-water valve 701, the sixth steam-water valve 706 and the first valve 901 are opened, the second steam-water valve 702, the third steam-water valve 703, the fourth steam-water valve 704, the fifth steam-water valve 705 and the second valve 902 are closed, the flue gas discharged from the high-temperature kiln 110 passes through the first waste heat recovery boiler and the denitration system 120 and then is directly discharged to the chimney 150 through the induced draft fan 140, and the superheated steam generated by the first waste heat recovery boiler is sent to steam-using equipment for use, the steam-consuming equipment can be power generation equipment, factory production and living equipment, and the superheated steam can be used for power generation and factory production and living.
When the denitration system 120 is in a fault shutdown maintenance, the sixth flue gas valve 506 can be opened on the basis of normal operation, the fourth flue gas valve 504 and the fifth flue gas valve 505 are closed, flue gas coming out of the high-temperature kiln 110 directly enters the second waste heat recovery boiler and the desulfurization and dust removal system 130 after passing through the first waste heat recovery boiler, and is discharged to the chimney 150 through the induced draft fan 140, generated heat supply steam is sent to steam consuming equipment, the steam consuming equipment can be power generation equipment and plant production and living equipment, and at the moment, power generation, plant production and living can be performed when the denitration system 120 cannot operate.
When the desulfurization and dust removal system 130 is out of order and is stopped for maintenance, the twelfth flue gas valve 512 can be opened on the basis of normal operation, the tenth flue gas valve 510 and the eleventh flue gas valve 511 are closed, flue gas from the high-temperature kiln 110 passes through the first waste heat recovery boiler and the denitration system 120 and then enters the second waste heat recovery boiler, the flue gas is discharged to the chimney 150 through the induced draft fan 140, generated heat supply steam is sent to steam consuming equipment, the steam consuming equipment can be power generation equipment and plant production and living equipment, and at the moment, the power generation, plant production and life steam supply can be realized when the desulfurization and dust removal system 130 cannot operate.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a high temperature kiln flue gas waste heat recovery system which characterized in that includes:
the first waste heat recovery boiler is provided with a first flue gas inlet and a first flue gas outlet, and the first flue gas inlet is communicated with the high-temperature kiln through a first flue gas pipeline;
the denitration system is provided with a second flue gas inlet and a second flue gas outlet, the second flue gas inlet faces the first flue gas outlet, and the first flue gas outlet is communicated with the second flue gas inlet through a second flue gas pipeline;
and the second waste heat recovery boiler is provided with a third flue gas inlet and a third flue gas outlet, the third flue gas inlet faces the second flue gas outlet, the second flue gas outlet is communicated with the third flue gas inlet through a third flue gas pipeline, and the third flue gas outlet is connected with a smoke exhaust pipe.
2. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 1, wherein the first flue gas pipeline is provided with a first flue gas valve, and the second flue gas pipeline is provided with a second flue gas valve;
the high-temperature kiln flue gas waste heat recovery system further comprises:
and one end of a fourth flue gas pipeline is communicated with the first flue gas pipeline and is positioned between the first flue gas valve and the high-temperature kiln, the other end of the fourth flue gas pipeline is communicated with the second flue gas pipeline and is positioned between the second flue gas valve and the denitration system, and a third flue gas valve is arranged on the fourth flue gas pipeline.
3. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 1, wherein a fourth flue gas valve is arranged on the second flue gas pipeline, and a fifth flue gas valve is arranged on the third flue gas pipeline;
the high-temperature kiln flue gas waste heat recovery system further comprises:
and one end of a fifth flue gas pipeline is communicated with the second flue gas pipeline and is positioned between the fourth flue gas valve and the first waste heat recovery boiler, the other end of the fifth flue gas pipeline is communicated with the third flue gas pipeline and is positioned between the fifth flue gas valve and the second waste heat recovery boiler, and the fifth flue gas pipeline is provided with a sixth flue gas valve.
4. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 1, wherein a seventh flue gas valve is arranged on the third flue gas pipeline, and an eighth flue gas valve is arranged on the smoke exhaust pipe;
the high-temperature kiln flue gas waste heat recovery system further comprises:
and one end of the sixth flue gas pipeline is communicated with the third flue gas pipeline and is positioned between the seventh flue gas valve and the denitration system, the other end of the sixth flue gas pipeline is communicated with the smoke exhaust pipe and is positioned between the eighth flue gas valve and the output end of the smoke exhaust pipe, and the sixth flue gas pipeline is provided with a ninth flue gas valve.
5. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 1, wherein the smoke exhaust pipe is provided with a desulfurization and dust removal system.
6. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 5, wherein the input end of the desulfurization dust removal system is provided with a tenth flue gas valve, and the output end is provided with an eleventh flue gas valve;
the high-temperature flue gas treatment system further comprises:
and one end of the seventh flue gas pipeline is communicated with the smoke exhaust pipe between the desulfurization and dust removal system and the second waste heat recovery boiler and is positioned between the tenth flue gas valve and the second waste heat recovery pipeline, the other end of the seventh flue gas pipeline is communicated with the smoke exhaust pipe between the desulfurization and dust removal system and the output end of the smoke exhaust pipe and is positioned between the eleventh flue gas valve and the output end of the smoke exhaust pipe, and the seventh flue gas pipeline is provided with a twelfth flue gas valve.
7. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 1, wherein the smoke exhaust pipe is provided with an induced draft fan, and the output end of the smoke exhaust pipe is communicated with a chimney.
8. The high temperature kiln flue gas waste heat recovery system of claim 1, wherein the first waste heat recovery boiler comprises:
a first furnace body having a first evaporator element and a superheater element therein, the first furnace body having the first flue gas inlet and the first flue gas outlet thereon;
the first steam drum is provided with a first steam-water inlet, a second steam-water inlet, a first steam-water outlet and a second steam-water outlet, the first steam-water outlet is communicated with the input end of the first evaporator assembly through a first steam-water pipeline, the second steam-water outlet is communicated with the input end of the superheater assembly through a second steam-water pipeline, and the output end of the first evaporator assembly is communicated with the first steam-water inlet through a third steam-water pipeline;
the second heat recovery boiler comprises:
the second furnace body is internally provided with a second evaporator assembly and an economizer assembly, the second furnace body is provided with a third flue gas inlet and a third flue gas outlet, and the input end of the economizer assembly is communicated with water supply equipment;
and the second steam pocket is provided with a third steam-water inlet, a fourth steam-water inlet, a third steam-water outlet and a fourth steam-water outlet, the third steam-water outlet is communicated with the input end of the second evaporator assembly through a fourth steam-water pipeline, the fourth steam-water outlet is communicated with the input end of the superheater assembly through a fifth steam-water pipeline, the output end of the second evaporator assembly is communicated with the third steam-water inlet through a sixth steam-water pipeline, and the output end of the economizer assembly is communicated with the second steam-water inlet and the fourth steam-water inlet through a seventh steam-water pipeline.
9. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 8, wherein a first valve is arranged at the second steam-water inlet, and a second valve is arranged at the fourth steam-water inlet.
10. The high-temperature kiln flue gas waste heat recovery system as claimed in claim 9, wherein a first steam-water valve is arranged on the second steam-water pipeline, and a second steam-water valve is arranged on the fifth steam-water pipeline;
the second heat recovery boiler further comprises:
and one end of the saturated steam discharge pipe is communicated with the fifth steam-water pipeline and is positioned between the second steam-water valve and the second steam drum, and the saturated steam discharge pipe is provided with a third steam-water valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200118.9A CN112902682A (en) | 2021-02-23 | 2021-02-23 | High temperature kiln flue gas waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200118.9A CN112902682A (en) | 2021-02-23 | 2021-02-23 | High temperature kiln flue gas waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112902682A true CN112902682A (en) | 2021-06-04 |
Family
ID=76124347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110200118.9A Pending CN112902682A (en) | 2021-02-23 | 2021-02-23 | High temperature kiln flue gas waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112902682A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968672A (en) * | 2014-05-10 | 2014-08-06 | 蚌埠玻璃工业设计研究院 | Heat exchanging device for glass kiln waste heat power generation denitration system |
| CN108426458A (en) * | 2018-05-03 | 2018-08-21 | 杭州伯勒智能工程有限公司 | A kind of glass furnace fume bypass system for desulfuration and denitration |
| CN207797774U (en) * | 2018-01-16 | 2018-08-31 | 福建省东锅节能科技有限公司 | A kind of glass furnace SCR denitration flue-gas temperature control device |
-
2021
- 2021-02-23 CN CN202110200118.9A patent/CN112902682A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968672A (en) * | 2014-05-10 | 2014-08-06 | 蚌埠玻璃工业设计研究院 | Heat exchanging device for glass kiln waste heat power generation denitration system |
| CN207797774U (en) * | 2018-01-16 | 2018-08-31 | 福建省东锅节能科技有限公司 | A kind of glass furnace SCR denitration flue-gas temperature control device |
| CN108426458A (en) * | 2018-05-03 | 2018-08-21 | 杭州伯勒智能工程有限公司 | A kind of glass furnace fume bypass system for desulfuration and denitration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102671538B (en) | Deep energy-saving system based on optimization of flue gas desulfurization and denitration technology | |
| CN102042605A (en) | Side-to-side thermal deashing method for rotary air preheater | |
| CN202303337U (en) | Multilevel condensation water heating system | |
| CN202762308U (en) | Deep energy-saving system based on flue gas desulfurization and denitrification process optimization | |
| CN108679594A (en) | Station boiler is adjustable high temperature dust pelletizing system and application process | |
| CN201184586Y (en) | Energy-saving and discharge-reducing hot water tank for boiler | |
| CN110354772A (en) | A kind of flue gas directly draws denitration urea pyrolysis device and method | |
| CN113669748A (en) | Full-load denitration system and method adopting dividing wall type heat exchange coupling coal-fired boiler | |
| CN210568552U (en) | Boiler energy-saving and flue gas whitening system | |
| CN112902682A (en) | High temperature kiln flue gas waste heat recovery system | |
| CN110145754A (en) | It can prevent the boiler flue gas treatment system and method for back-end surfaces low-temperature corrosion | |
| CN109603526A (en) | A kind of biomass electric power plant smoke processing system | |
| CN209138350U (en) | A kind of flue gas denitrification system for realizing grid-connected i.e. investment | |
| CN107559863A (en) | A kind of integrating device for coupling gas cleaning and waste heat recovery | |
| CN209630983U (en) | A kind of biomass electric power plant smoke processing system | |
| CN113776074A (en) | Dust removal system capable of recovering waste heat | |
| CN113251434A (en) | Subcritical boiler multi-target collaborative optimization air preheater anti-blocking system | |
| CN208620383U (en) | Residual heat of air compressor recycling equipment | |
| CN106195968A (en) | Flue gas processing device and rotary hearth furnace high-temperature high dust smoke processing system | |
| CN202139160U (en) | Low-parameter exhaust-heat boiler for water glass kiln | |
| CN206648007U (en) | Waste heat boiler with protection evaporator | |
| CN110160080A (en) | A kind of rotary regenerative air preheater boosting type control block apparatus and its control blocking method | |
| CN103047642A (en) | Multilevel condensation water heating system | |
| CN219797256U (en) | Conduction oil boiler | |
| CN105889899A (en) | Superheated steam temperature adjusting system and method suitable for SCR low-load operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |