CN112146457A - Vertical tunnel kiln heat boiler - Google Patents
Vertical tunnel kiln heat boiler Download PDFInfo
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- CN112146457A CN112146457A CN202011144988.0A CN202011144988A CN112146457A CN 112146457 A CN112146457 A CN 112146457A CN 202011144988 A CN202011144988 A CN 202011144988A CN 112146457 A CN112146457 A CN 112146457A
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- flue gas
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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
- 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
- F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/78—Adaptations or mounting of level indicators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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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
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a vertical tunnel kiln furnace thermal boiler, which comprises a steel frame structure supporting platform, a deaerator, a water supply system, an economizer assembly, an evaporator assembly, a drum, a superheater assembly and a water wall settling chamber, wherein the drum is installed at the top of the steel frame structure supporting platform, the deaerator is communicated with the water supply system, the water supply system is communicated with the economizer assembly, the economizer assembly is communicated with the drum, the drum is respectively communicated with the evaporator assembly and the water wall settling chamber through a descending pipe group and an ascending pipe group, the drum is communicated with the superheater assembly, and an external steam pipeline is connected outside the superheater assembly; the water wall settling chamber, the superheater assembly, the evaporator assembly and the economizer assembly are sequentially connected through a flue, and a flue gas outlet of the economizer assembly is connected with a flue gas treatment device. The invention has simple integral structure and reasonable layout, can efficiently recover the heat in the high-temperature flue gas, and has the advantages of high efficiency, large steam production quantity, high steam production parameters, low unit manufacturing cost and the like.
Description
Technical Field
The invention relates to the field of recovery and treatment of waste heat generated by sintering and brickmaking in a tunnel kiln, in particular to a vertical tunnel kiln heat boiler.
Background
With the improvement of the technical level of the sintering brick making industry, the tunnel kiln sintering brick making is a main sintering brick making mode in China. A large amount of high-temperature flue gas can be discharged in the production process, the direct discharge can cause pollution to the environment, and secondary resource waste is realized from the resource perspective. The ecological civilization construction planning in the current stage of China provides comprehensive promotion of resource saving and utilization and resource recycling, and green development, cyclic development and low-carbon development are greatly promoted. The tunnel kiln sintering brick making is an energy consumption industry, and the secondary energy recycling is emphasized, but the prior art has low effective utilization rate of high-temperature flue gas, small steam production, low parameters and high unit cost, and cannot be popularized and applied in the tunnel kiln sintering brick making industry. Therefore, a waste heat boiler which has high efficiency, large steam production quantity, high steam production parameters and low unit cost and can be popularized and applied is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the vertical tunnel kiln heat boiler which can efficiently recover heat in high-temperature flue gas, and simultaneously produce steam which can be used for driving power equipment, generating power or supplying heat, so that the production cost of an enterprise is reduced, the benefit of the enterprise is improved, and the vertical tunnel kiln heat boiler has the advantages of high efficiency, large steam production quantity, high steam production parameters, low unit manufacturing cost and the like.
The purpose of the invention is realized by the following technical scheme:
a vertical tunnel kiln thermal boiler comprises a steel frame structure supporting platform, a deaerator, a water supply system, a coal economizer assembly, an evaporator assembly, a drum, a superheater assembly and a water wall settling chamber, wherein the top of the steel frame structure supporting platform is provided with the drum, the deaerator, the water supply system, the coal economizer assembly, the evaporator assembly, the drum, the superheater assembly and the water wall settling chamber are arranged on the steel frame structure supporting platform, the deaerator is connected with a water supplementing pipe and a heating steam pipe, the deaerator is communicated with the water supply system through a water inlet pipe of a water supply pump, the water supply system is communicated with the coal economizer assembly through a water supply pipeline, the coal economizer assembly is communicated with the drum through a hot water pipe, the drum is respectively communicated with the evaporator assembly and the water wall settling chamber through a descending pipe group, the evaporator assembly and the water wall settling chamber are communicated with the drum through an ascending pipe group, boiler water circulation is realized between the evaporator assembly and the boiler barrel through the ascending tube group and the descending tube group, and boiler water circulation is realized between the water-cooled wall settling chamber and the boiler barrel through the ascending tube group and the descending tube group; the boiler barrel is communicated with the superheater assembly through a saturated steam pipe, and an external steam pipeline is connected outside the superheater assembly; the water-cooled wall settling chamber is provided with a flue gas inlet and a flue gas outlet, the flue gas inlet of the water-cooled wall settling chamber is connected with a flue gas channel, the flue gas outlet of the water-cooled wall settling chamber is communicated with the flue gas inlet of the superheater assembly through a flue, the flue gas outlet of the superheater assembly is communicated with the flue gas inlet of the evaporator assembly through a flue, the flue gas outlet of the evaporator assembly is communicated with the flue gas inlet of the economizer assembly through a flue, and the flue gas outlet of the economizer assembly is connected with a flue gas treatment device.
In order to better realize the invention, the water supply system comprises a plurality of water supply pumps, the water inlet ends of the water supply pumps are communicated with the deaerator through the water inlet pipes of the water supply pumps, and the water outlet ends of the water supply pumps are communicated with the economizer assembly through pipelines.
The further technical scheme is as follows: the economizer assembly comprises a primary economizer and a secondary economizer, the water outlet end of the water feed pump is communicated with the water inlet end of the primary economizer through a water feed pipeline, the water outlet end of the primary economizer is communicated with the water inlet end of the secondary economizer through an economizer connecting pipe, and the water outlet end of the secondary economizer is communicated with the boiler barrel through a hot water pipe.
Preferably, the evaporator assembly comprises a first-stage evaporator, a second-stage evaporator and a third-stage evaporator, the outlet end of the first-stage evaporator, the outlet end of the second-stage evaporator and the outlet end of the third-stage evaporator are communicated with the boiler barrel through ascending pipe groups, and the water inlet end of the first-stage evaporator, the water inlet end of the second-stage evaporator and the water inlet end of the third-stage evaporator are communicated with the boiler barrel through descending pipe groups.
Preferably, the superheater assembly comprises a low-temperature superheater and a high-temperature superheater, the steam inlet end of the low-temperature superheater is communicated with the steam outlet end of the drum through a saturated steam pipe, the steam outlet end of the low-temperature superheater is communicated with the steam inlet end of the high-temperature superheater through a superheated steam connecting pipe, the steam outlet end of the high-temperature superheater is connected with a superheater outlet header, and the external steam pipeline is connected and arranged on the superheater outlet header.
Preferably, a flue gas outlet of the water-cooled wall settling chamber is communicated with a flue gas inlet of a high-temperature superheater, a flue gas outlet of the high-temperature superheater is communicated with a flue gas inlet of a low-temperature superheater, a flue gas outlet of the low-temperature superheater is communicated with a flue gas inlet of a tertiary evaporator through a flue, a flue gas outlet of the tertiary evaporator is communicated with a flue gas inlet of a secondary evaporator through a flue, and a flue gas outlet of the secondary evaporator is communicated with a flue gas inlet of a primary evaporator through a flue; the flue gas outlet of the primary evaporator is communicated with the flue gas inlet of the secondary economizer through a flue, the flue gas outlet of the secondary economizer is communicated with the flue gas inlet of the primary economizer through a flue, and the flue gas treatment device is arranged at the flue gas outlet of the primary economizer.
Preferably, the boiler barrel is correspondingly provided with a two-color water level gauge, an electric contact water level gauge and a balance container water level gauge, and the boiler barrel is also correspondingly provided with a remote pressure gauge, a pressure gauge, an overpressure steam exhaust port and a safety valve.
Preferably, a temperature detector, a pressure detector and a flowmeter are arranged at the steam outlet end of the high-temperature superheater; and a desuperheater is arranged on the superheated steam connecting pipe.
Preferably, an electric gate valve is installed on the water inlet pipe of the water supply pump, and an electric regulating valve is installed on the water supply pipeline.
Preferably, a temperature detector is correspondingly arranged on the deaerator; the water-cooled wall settling chamber adopts a membrane type structure, the primary economizer, the secondary economizer, the primary evaporator, the secondary evaporator and the tertiary evaporator all adopt a serpentine fin tube box type structure, and the low-temperature superheater and the high-temperature superheater all adopt a serpentine light tube box type structure.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the high-temperature flue gas heat recovery device is simple in overall structure and reasonable in layout, can efficiently recover heat in high-temperature flue gas, and can be used for driving power equipment, generating power or heating by produced steam, so that the production cost of enterprises is reduced, the benefit of the enterprises is improved, and the high-temperature flue gas heat recovery device has the advantages of being high in efficiency, large in steam production quantity, high in steam production parameter, low in unit cost and the like.
(2) According to the invention, the water-cooled wall settling chamber is arranged at the position of the flue gas inlet, so that ash in the flue gas can be effectively settled, the ash accumulation on the heat exchange surface of the boiler is avoided, and the high-efficiency operation of the boiler is ensured. Each evaporator of the invention adopts a finned spiral tube structure, the heat exchange efficiency is high, and the efficiency of the boiler can be integrally improved.
(3) The invention is provided with the deaerator, can effectively remove dissolved oxygen in water in the boiler barrel, better protects the operation of the equipment and prolongs the service life of the equipment.
(4) The two ends of the boiler barrel are provided with the double-color water level gauges convenient for observing the water level of the boiler barrel on site, so that the comparison of the on-site water level can be realized, the comparison of the on-site water level with the water level gauge with the remote transmission water-electricity contact point and the water level gauge with the balance container can be realized, and the influence of false water level on the safe operation of the boiler during the monitoring of the water level of the boiler barrel can be avoided. The boiler barrel is also provided with a local pressure gauge for local observation, and remote pressure is also arranged for monitoring the pressure change of the boiler barrel in real time.
(5) The safety valve is arranged on the boiler barrel and used for protecting the boiler barrel from exceeding a set pressure, when the pressure of the boiler barrel exceeds the set pressure, the safety valve automatically opens the outward steam exhaust to reduce the pressure of the boiler barrel, the boiler is protected, and meanwhile the safe operation of the boiler is guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural sectional view in the left-hand direction of FIG. 1;
FIG. 3 is a structural sectional view in the right direction of FIG. 1;
fig. 4 is a schematic structural view in a top view of fig. 1.
Wherein, the names corresponding to the reference numbers in the drawings are:
1-deaerator, 2-water feed pump water inlet pipe, 3-electric gate valve, 4-water feed pump, 5-electric regulating valve, 6-water feed pipeline, 7-primary economizer, 8-economizer connecting pipe, 9-secondary economizer, 10-hot water pipe, 11-boiler barrel, 12-descending pipe group, 13-primary evaporator, 14-secondary evaporator, 15-tertiary evaporator, 16-water wall settling chamber, 17-ascending pipe group, 16-water wall settling chamber, 18-saturated steam pipe, 19-low temperature superheater, 20-superheated steam connecting pipe, 21-desuperheater, 22-high temperature superheater, 23-superheater outlet header, 24-bicolor water level gauge, 25-electric contact water level gauge, 26-balance container water level gauge, 27-remote pressure, 28-pressure gauge, 29-overpressure steam discharge port, 30-safety valve, 31-flue gas channel, 32-steel frame structure support platform.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
examples
As shown in figures 1-4, a vertical tunnel kiln heat boiler comprises a steel frame structure supporting platform 32, a deaerator 1, a water supply system and an economizerSubassembly, evaporimeter subassembly, drum 11, over heater subassembly and water-cooling wall settling chamber 16, drum 11 is installed at steel frame construction supporting platform 32 top, and oxygen-eliminating device 1, water supply system, economizer subassembly, evaporimeter subassembly, drum 11, over heater subassembly, water-cooling wall settling chamber 16 are installed on steel frame construction supporting platform 32, and this embodiment is with the boiler inlet flue gas volume 60000Nm that tunnel kiln production process produced3The temperature of the flue gas is 850 ℃ and the outlet temperature is 175 ℃ for example. The deaerator 1 is connected with a water supplementing pipe and a heating steam pipe, the deaerator 1 of the embodiment is communicated with the boiler barrel 11 (when in use, water supplementing operation can be carried out through the water supplementing pipe), and the deaerator 1 is correspondingly provided with a temperature detector; the temperature that general water source got into in the oxygen-eliminating device 1 all is about 25 ℃, in order to improve the heating effect and the efficiency of follow-up structure to water, through heating steam with water heating to 104 ℃ after (heating steam is through the input of heating steam pipe, the temperature detector on the oxygen-eliminating device 1 can realize the accuracy of 1 inside temperature in the oxygen-eliminating device) will carry out the deoxidization to the water or the steam that get into oxygen-eliminating device 1 and handle to better each equipment of protection and pipeline.
As shown in fig. 1, a deaerator 1 is communicated with a feed water supply system through a feed water pump inlet pipe 2, the feed water supply system is communicated with an economizer assembly through a feed water pipe 6, the economizer assembly is communicated with a drum 11 through a hot water pipe 10, the drum 11 is respectively communicated with an evaporator assembly and a water-cooled wall settling chamber 16 through a descending pipe group 12, the evaporator assembly and the water-cooled wall settling chamber 16 are communicated with the drum 11 through an ascending pipe group 17, furnace water circulation is realized between the evaporator assembly and the drum 11 through the ascending pipe group 17 and the descending pipe group 12, and furnace water circulation is realized between the water-cooled wall settling chamber 16 and the drum 11 through the ascending pipe group 17 and the descending pipe group 12; in the present embodiment, the boiler drum 11, the downcomer 12, the first-stage evaporator 13, the second-stage evaporator 14, the third-stage evaporator 15, the water wall settling chamber 16, and the riser group 17 form a natural circulation of the furnace water under the action of a pressure difference (of course, the water circulation may be enhanced by auxiliary power). The drum 11 is communicated with a superheater assembly through a saturated steam pipe 18, and an external steam pipeline is connected outside the superheater assembly. The water-cooled wall settling chamber 16 is provided with a flue gas inlet and a flue gas outlet, the flue gas inlet of the water-cooled wall settling chamber 16 is connected with a flue gas channel 31, the flue gas outlet of the water-cooled wall settling chamber 16 is communicated with the flue gas inlet of the superheater assembly through a flue, the flue gas outlet of the superheater assembly is communicated with the flue gas inlet of the evaporator assembly through a flue, the flue gas outlet of the evaporator assembly is communicated with the flue gas inlet of the economizer assembly through a flue, and the flue gas outlet of the economizer assembly is connected with a flue gas treatment device. The preferred boiler barrel 11 of the invention is correspondingly provided with a bicolor water level gauge 24, an electric contact water level gauge 25 and a balance container water level gauge 26, and the water level condition can be accurately known and communicated to a monitoring end through the water level gauges. The boiler barrel 11 is also correspondingly provided with a remote pressure 27, a pressure gauge 28, an overpressure steam exhaust port 29 and a safety valve 30, and the remote pressure of the embodiment comprises a pressure transmitter, a transmission line and a display instrument. The remote pressure 27 and the pressure gauge 28 can accurately know the internal pressure condition and communicate the pressure condition to the monitoring end, and the overpressure steam outlet 29 can realize pressure discharge or pressure relief treatment under the overpressure condition of the boiler barrel 11.
As shown in figure 1, the water supply system comprises a plurality of water supply pumps 4, the water inlet ends of the water supply pumps 4 are communicated with the deaerator 1 through water inlet pipes 2 of the water supply pumps, and the water outlet ends of the water supply pumps 4 are communicated with the economizer assembly through pipelines. The economizer assembly comprises a primary economizer 7 and a secondary economizer 9, the water outlet end of the water supply pump 4 is communicated with the water inlet end of the primary economizer 7 through a water supply pipeline 6, the water outlet end of the primary economizer 7 is communicated with the water inlet end of the secondary economizer 9 through an economizer connecting pipe 8, and the water outlet end of the secondary economizer 9 is communicated with the boiler barrel 11 through a hot water pipe 10. The installation is equipped with electric gate valve 3 on the feed pump inlet tube 2, can control the switch and the flow control of feed pump inlet tube 2 through electric gate valve 3, and the installation is equipped with electrical control valve 5 on the water supply line 6, can carry out the switch and the flow control of water supply line 6 through electrical control valve 5.
The evaporator assembly comprises a first-stage evaporator 13, a second-stage evaporator 14 and a third-stage evaporator 15, wherein the outlet end of the first-stage evaporator 13, the outlet end of the second-stage evaporator 14 and the outlet end of the third-stage evaporator 15 are communicated with a boiler barrel 11 through ascending pipe groups 17, and the water inlet end of the first-stage evaporator 13, the water inlet end of the second-stage evaporator 14 and the water inlet end of the third-stage evaporator 15 are communicated with the boiler barrel 11 through descending pipe groups 12. The superheater assembly comprises a low-temperature superheater 19 and a high-temperature superheater 22, the steam inlet end of the low-temperature superheater 19 is communicated with the steam outlet end of the boiler barrel 11 through a saturated steam pipe 18, the steam outlet end of the low-temperature superheater 19 is communicated with the steam inlet end of the high-temperature superheater 22 through a superheated steam connecting pipe 20, and a desuperheater 21 is arranged on the superheated steam connecting pipe 20. The steam outlet end of the high-temperature superheater 22 is connected with a superheater outlet header 23, and an external steam pipeline is connected and arranged on the superheater outlet header 23. The steam outlet end of the high-temperature superheater 22 is provided with a temperature detector, a pressure detector and a flowmeter, and the steam outlet end of the high-temperature superheater 22 (generally, superheated steam with parameters of 22T/h, 5.5MPa, 485 ℃ and below) in this embodiment can detect the temperature, the pressure and the like of the superheated steam. The superheated steam discharged from the hot outlet header 23 can be used for driving power equipment, generating power or heating, so that the production cost of enterprises is reduced, and the benefits of the enterprises are improved.
The flue gas outlet of the water wall settling chamber 16 is communicated with the flue gas inlet of the high-temperature superheater 22 through a flue, the flue gas outlet of the high-temperature superheater 22 is communicated with the flue gas inlet of the low-temperature superheater 19 through the flue, the flue gas outlet of the low-temperature superheater 19 is communicated with the flue gas inlet of the tertiary evaporator 15 through the flue, the flue gas outlet of the tertiary evaporator 15 is communicated with the flue gas inlet of the secondary evaporator 14 through the flue, and the flue gas outlet of the secondary evaporator 14 is communicated with the flue gas inlet of the primary evaporator 13 through the flue. The flue gas outlet of the primary evaporator 13 is communicated with the flue gas inlet of the secondary economizer 9 through a flue, the flue gas outlet of the secondary economizer 9 is communicated with the flue gas inlet of the primary economizer 7 through a flue, and the flue gas treatment device is arranged at the flue gas outlet of the primary economizer 7.
The water wall settling chamber 16 adopts a membrane type structure, the primary economizer 7, the secondary economizer 9, the primary evaporator 13, the secondary evaporator 14 and the tertiary evaporator 15 all adopt a serpentine fin tube box type structure, and the low-temperature superheater 19 and the high-temperature superheater 22 all adopt a serpentine light tube box type structure. The overall arrangement form of the invention is an inverted U shape, as shown in fig. 1 and 4, the primary economizer 7, the economizer connecting pipe 8, the primary evaporator 13 and the secondary evaporator 14 of the embodiment are distributed and arranged on one side of the steel frame structure supporting platform 32 from bottom to top, and the tertiary evaporator 15, the low temperature superheater 19, the high temperature superheater 22 and the water wall settling chamber 16 of the embodiment are distributed and arranged on the other side of the steel frame structure supporting platform 32 from top to bottom.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A vertical tunnel kiln heat boiler is characterized in that: the water supply system comprises a steel frame structure supporting platform (32), a deaerator (1), a water supply system, a coal economizer assembly, an evaporator assembly, a boiler barrel (11), a superheater assembly and a water-cooled wall settling chamber (16), wherein the boiler barrel (11) is installed at the top of the steel frame structure supporting platform (32), the deaerator (1), the water supply system, the coal economizer assembly, the evaporator assembly, the boiler barrel (11), the superheater assembly and the water-cooled wall settling chamber (16) are installed on the steel frame structure supporting platform (32), the deaerator (1) is connected with a water supplementing pipe and a heating steam pipe, the deaerator (1) is communicated with the water supply system through a water feed pump water inlet pipe (2), the water supply system is communicated with the coal economizer assembly through a water feed pipe (6), the coal economizer assembly is communicated with the boiler barrel (11) through a hot water pipe (10), and the boiler barrel (11) is communicated with the evaporator assembly through a descending pipe assembly (12), The water-cooled wall settling chambers (16) are respectively communicated, and the evaporator assembly and the water-cooled wall settling chambers (16) are communicated with the boiler barrel (11) through a riser group (17); the boiler barrel (11) is communicated with a superheater assembly through a saturated steam pipe (18), and an external steam pipeline is connected outside the superheater assembly; the flue gas treatment device is characterized in that the water-cooled wall settling chamber (16) is provided with a flue gas inlet and a flue gas outlet, the flue gas inlet of the water-cooled wall settling chamber (16) is connected with a flue gas channel (31), the flue gas outlet of the water-cooled wall settling chamber (16) is communicated with the flue gas inlet of the superheater assembly through a flue, the flue gas outlet of the superheater assembly is communicated with the flue gas inlet of the evaporator assembly through a flue, the flue gas outlet of the evaporator assembly is communicated with the flue gas inlet of the economizer assembly through a flue, and the flue gas outlet of the economizer assembly is connected with a flue gas treatment device.
2. The vertical tunnel kiln heat boiler according to claim 1, characterized in that: the water supply system comprises a plurality of water supply pumps (4), the water inlet ends of the water supply pumps (4) are communicated with the deaerator (1) through water inlet pipes (2) of the water supply pumps, and the water outlet ends of the water supply pumps (4) are communicated with the economizer assembly through pipelines.
3. The vertical tunnel kiln heat boiler according to claim 2, characterized in that: the economizer assembly comprises a first-stage economizer (7) and a second-stage economizer (9), wherein the water outlet end of the water supply pump (4) is communicated with the water inlet end of the first-stage economizer (7) through a water supply pipeline (6), the water outlet end of the first-stage economizer (7) is communicated with the water inlet end of the second-stage economizer (9) through an economizer connecting pipe (8), and the water outlet end of the second-stage economizer (9) is communicated with the boiler barrel (11) through a hot water pipe (10).
4. A vertical tunnel kiln heat boiler according to claim 3, characterized in that: the evaporator assembly comprises a first-stage evaporator (13), a second-stage evaporator (14) and a third-stage evaporator (15), wherein the outlet end of the first-stage evaporator (13), the outlet end of the second-stage evaporator (14) and the outlet end of the third-stage evaporator (15) are communicated with the boiler barrel (11) through an ascending pipe assembly (17), and the inlet end of the first-stage evaporator (13), the inlet end of the second-stage evaporator (14) and the inlet end of the third-stage evaporator (15) are communicated with the boiler barrel (11) through a descending pipe assembly (12).
5. The vertical tunnel kiln heat boiler according to claim 4, characterized in that: the superheater assembly comprises a low-temperature superheater (19) and a high-temperature superheater (22), the steam inlet end of the low-temperature superheater (19) is communicated with the steam outlet end of the drum (11) through a saturated steam pipe (18), the steam outlet end of the low-temperature superheater (19) is communicated with the steam inlet end of the high-temperature superheater (22) through a superheated steam connecting pipe (20), the steam outlet end of the high-temperature superheater (22) is connected with a superheater outlet header (23), and an external steam pipeline is connected and arranged on the superheater outlet header (23).
6. The vertical tunnel kiln heat boiler according to claim 5, characterized in that: the flue gas outlet of the water wall settling chamber (16) is communicated with the flue gas inlet of a high-temperature superheater (22) through a flue, the flue gas outlet of the high-temperature superheater (22) is communicated with the flue gas inlet of a low-temperature superheater (19) through a flue, the flue gas outlet of the low-temperature superheater (19) is communicated with the flue gas inlet of a third-stage evaporator (15) through a flue, the flue gas outlet of the third-stage evaporator (15) is communicated with the flue gas inlet of a second-stage evaporator (14) through a flue, and the flue gas outlet of the second-stage evaporator (14) is communicated with the flue gas inlet of a first-stage evaporator (13) through a flue; the flue gas outlet of the primary evaporator (13) is communicated with the flue gas inlet of the secondary economizer (9) through a flue, the flue gas outlet of the secondary economizer (9) is communicated with the flue gas inlet of the primary economizer (7) through a flue, and the flue gas treatment device is arranged at the flue gas outlet of the primary economizer (7).
7. The vertical tunnel kiln heat boiler according to claim 1, characterized in that: the boiler is characterized in that a double-color water level gauge (24), an electric contact water level gauge (25) and a balance container water level gauge (26) are correspondingly arranged on the boiler barrel (11), and a remote pressure (27), a pressure gauge (28), an overpressure steam exhaust port (29) and a safety valve (30) are correspondingly arranged on the boiler barrel (11).
8. The vertical tunnel kiln heat boiler according to claim 5 or 6, characterized in that: a temperature detector, a pressure detector and a flowmeter are arranged at the steam outlet end of the high-temperature superheater (22); a desuperheater (21) is arranged on the superheated steam connecting pipe (20).
9. A vertical tunnel kiln heat boiler according to claim 3, characterized in that: the water supply pump is characterized in that an electric gate valve (3) is arranged on the water inlet pipe (2), and an electric regulating valve (5) is arranged on the water supply pipeline (6).
10. The vertical tunnel kiln heat boiler according to claim 5, characterized in that: a temperature detector is correspondingly arranged on the deaerator (1); the water wall settling chamber (16) adopts a membrane type structure, the primary economizer (7), the secondary economizer (9), the primary evaporator (13), the secondary evaporator (14) and the tertiary evaporator (15) all adopt a serpentine finned tube box type structure, and the low-temperature superheater (19) and the high-temperature superheater (22) all adopt a serpentine light tube box type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011144988.0A CN112146457A (en) | 2020-10-23 | 2020-10-23 | Vertical tunnel kiln heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011144988.0A CN112146457A (en) | 2020-10-23 | 2020-10-23 | Vertical tunnel kiln heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112146457A true CN112146457A (en) | 2020-12-29 |
Family
ID=73954814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011144988.0A Pending CN112146457A (en) | 2020-10-23 | 2020-10-23 | Vertical tunnel kiln heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112146457A (en) |
-
2020
- 2020-10-23 CN CN202011144988.0A patent/CN112146457A/en active Pending
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