CN214745644U - Single-drum horizontally-arranged fuel oil and gas boiler - Google Patents
Single-drum horizontally-arranged fuel oil and gas boiler Download PDFInfo
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- CN214745644U CN214745644U CN202121053182.0U CN202121053182U CN214745644U CN 214745644 U CN214745644 U CN 214745644U CN 202121053182 U CN202121053182 U CN 202121053182U CN 214745644 U CN214745644 U CN 214745644U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a single-drum horizontally-arranged fuel gas boiler. The boiler comprises a hearth, a second return flue and a third return flue, wherein horizontally distributed drums are arranged above the hearth, the second return flue and the third return flue correspondingly, and flue gas generated by combusting fuel by a combustor can sequentially flow through the hearth, the second return flue and the third return flue and can be discharged through the third return flue; water in corresponding membrane wall tubes in the hearth and the second return flue can absorb heat of the flue gas to generate steam, and the generated steam enters the drum through a steam pipeline unit; and the boiler barrel is used for carrying out water-vapor separation on the steam, the separated saturated steam can enter the second return flue, and the required target steam can be obtained after the steam is heated by the steam heating device in the second return flue. The utility model discloses a horizontal level is arranged, greatly reduced the height of boiler, reduction production and installation cost, safe and reliable.
Description
Technical Field
The utility model relates to a boiler, in particular to a fuel oil and gas boiler with a single boiler barrel horizontally arranged.
Background
With the increasing requirements of our country on environmental protection and the deepening of carbon emission reduction, boilers using natural gas, liquefied petroleum gas, chemical tail gas, coke oven gas or oil as fuel are more and more, and such boilers mainly use fire tube boilers and double-drum longitudinally-arranged water tube boilers, and some boilers are single-drum vertically-arranged boilers. The capacity of the fire tube boiler is not large, usually exceeds 35t/h, the pressure exceeds 2.5MPa, and the steam temperature is saturated; when the steam pressure is higher, the double-drum longitudinally-arranged water pipe boiler needs to adopt an expanded pipe structure, and the reliability is poor; the vertically arranged single-drum water pipe boiler has large steel consumption and cannot be quickly installed.
Disclosure of Invention
The utility model aims at overcoming the not enough of existence among the prior art, providing a single drum horizontal arrangement's fuel gas boiler, it adopts horizontal level to arrange, greatly reduced the height of boiler, reduction in production and installation cost, safe and reliable.
According to the technical scheme provided by the utility model, the single-drum horizontally-arranged fuel gas boiler comprises a furnace chamber provided with a burner, a second return flue adaptive-connected with the furnace chamber and a third return flue adaptive-connected with the second return flue, wherein horizontally-distributed drums are arranged above the furnace chamber, the second return flue and the third return flue correspondingly, and the drums are adaptive-connected with the furnace chamber and the second return flue through a water vapor pipeline unit;
flue gas generated by the combustion of fuel by the combustor can sequentially flow through the hearth, the second return flue and the third return flue and can be discharged through the third return flue; water in corresponding membrane wall tubes in the hearth and the second return flue can absorb heat of the flue gas to generate steam, and the generated steam enters the drum through a steam pipeline unit; and the boiler barrel is used for carrying out water-vapor separation on the steam, the separated saturated steam can enter the second return flue, and the required target steam can be obtained after the steam is heated by the steam heating device in the second return flue.
Only one drum is arranged above the hearth, the second return flue and the third return flue; the steam pipeline unit comprises a concentrated descending pipe which can be connected with the boiler barrel in an adaptive mode, the concentrated descending pipe is communicated with the boiler barrel, the boiler barrel is supported on a boiler foundation through the concentrated descending pipe, and the hearth, the second return flue and the third return flue are horizontally supported on the boiler foundation.
The steam pipeline unit also comprises a first dispersion descending pipe and a second dispersion descending pipe which are in adaptive connection with the concentration descending pipe, the lower part of the concentration descending pipe is connected and communicated with the membrane water wall in the hearth through the first dispersion descending pipe, and the lower part of the concentration descending pipe is connected and communicated with the membrane water wall in the second return flue through the second dispersion descending pipe;
the header in the hearth and the header in the second return flue are connected and communicated with the drum through corresponding steam-water eduction tubes so as to send steam generated by absorbing smoke heat by water in corresponding membrane water walls in the hearth and the second return flue into the drum.
The combustor is arranged on a membrane water-cooled wall on the front side of the hearth, and fuel combusted by the combustor comprises natural gas, petroleum gas, chemical tail gas, coke oven gas, light diesel oil and/or heavy oil.
The steam heating device comprises a high-temperature superheater, a low-temperature superheater and a high-temperature energy saver which are arranged in the second return flue in sequence, and when the flue gas flows to the third return flue through the second return flue, the flue gas is contacted with the high-temperature superheater, the low-temperature superheater and the high-temperature energy saver in sequence.
The third return flue comprises a connecting flue communicated with the second return flue, the first end of the connecting flue is connected with the second return flue, the first end of the connecting flue is provided with a low-temperature economizer, and the second end of the connecting flue is provided with a condenser or an air preheater.
The maintenance platform is matched with the hearth, the second return flue and the boiler barrel, and a plurality of platform escalators are arranged on the maintenance platform.
The utility model has the advantages that: only one boiler barrel is matched with the hearth and the second return flue, so that the number of the boiler barrels can be reduced, and the manufacturing cost is reduced; the boiler barrel is horizontally arranged, so that the height of the boiler is greatly reduced, the boiler barrel is supported on the basis of the boiler through the concentrated descending pipe, the steel consumption of a steel frame and a platform escalator can be reduced, the hearth, the second return flue and the third return flue are uniformly arranged on the basis of the boiler, the boiler barrel can freely expand upwards, the expansion thermal stress is reduced, and the safety is greatly improved. The hearth, the second return flue and the third return flue can be assembled into a large piece, so that the time for field installation can be greatly reduced, the installation efficiency is improved, the method is suitable for a gas/oil boiler with the evaporation capacity of more than 10t/h, the steam pressure of more than 2.5MPa and the steam temperature of more than 350 ℃, the requirements of industrial power generation, heat supply and steam supply can be met, and the method is safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Description of reference numerals: 1-boiler barrel, 2-centralized downcomer, 3-steam-water outlet pipe, 4-hearth, 5-burner, 6-second return flue, 7-first decentralized downcomer, 8-high temperature superheater, 9-low temperature superheater, 10-high temperature economizer, 11-condenser, 12-low temperature economizer, 13-connecting flue, 14-platform staircase, 15-boiler foundation, 16-maintenance platform and 17-second decentralized downcomer.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
As shown in fig. 1, 2 and 3: in order to greatly reduce the height of the boiler and reduce the production and installation cost, the utility model comprises a hearth 4 provided with a burner 5, a second return flue 6 adaptive-connected with the hearth 4 and a third return flue adaptive-connected with the second return flue 6, wherein horizontally distributed boiler barrels 1 are arranged above the hearth 4, the second return flue 6 and the third return flue correspondingly, and the boiler barrels 1 are adaptive-connected with the hearth 4 and the second return flue 6 through a water vapor pipeline unit;
flue gas generated by the combustion of fuel by the combustor 5 can sequentially flow through the hearth 4, the second return flue 6 and the third return flue and can be discharged through the third return flue; water in corresponding membrane type water-cooled wall pipes in the hearth 4 and the second return flue 6 can generate steam after absorbing the heat of the flue gas, and the generated steam enters the drum 1 through a water vapor pipeline unit; the boiler barrel 1 is used for carrying out water-vapor separation on steam, the separated saturated steam can enter the second return flue 6, and the required target steam can be obtained after the steam is heated by the steam heating device in the second return flue 6.
Specifically, the furnace 4 and the second return flue 6 may specifically adopt the same existing form, wherein the inner wall of the furnace 4 is provided with a membrane water wall and a header, the inner wall of the second return flue 6 is also provided with a membrane water wall and a header, and the specific structures, functions, and the like of the membrane water wall and the header are consistent with those of the existing form, and are specifically known to those skilled in the art, and are not described herein again. When the drum 1 is horizontally distributed, that is, the drum 1 is horizontally distributed, and when the drum 1 is horizontally distributed, the furnace 4, the second return flue 6 and the third return flue are also generally horizontally distributed, so that the flue gas flows in the furnace 4, the second return flue 6 and the third return flue in the horizontal direction.
The hearth 4 can be communicated with the third return flue through the second return flue 6, the combustor 5 is arranged in the hearth 4, the combustor 5 can be used for realizing combustion of fuel, and high-heat smoke can be generated after the fuel is combusted. Specifically, the burner 5 is arranged on a membrane water wall on the front side, and fuel burned by the burner 5 comprises natural gas, petroleum gas, chemical engineering tail gas, coke oven gas, light diesel oil and/or heavy oil. The combustor 5 is arranged on a membrane water-cooled wall at the front side of the hearth 4, specifically, the combustor 5 is positioned at a joint part far away from the hearth 4 and the second return flue 6 in the hearth 4, and the first return flue can be formed by utilizing the hearth 4.
The burner 5 may take a form conventionally used today, specifically adapted to the type of fuel etc., and is specifically well known to those skilled in the art. In the embodiment of the utility model, the flue gas generated by the combustion of the fuel by the burner 5 can flow through the furnace chamber 4, the second return flue 6 and the third return flue in sequence and can be discharged through the third return flue; water in corresponding membrane type water-cooled wall pipes in the hearth 4 and the second return flue 6 can generate steam after absorbing the heat of the flue gas, and the generated steam enters the drum 1 through a water vapor pipeline unit; the boiler barrel 1 is used for carrying out water-vapor separation on steam, the separated saturated steam can enter the second return flue 6 and can be heated by a steam heating device in the second return flue 6 to obtain required target steam, and the target steam is specifically steam with preset steam temperature and the like.
Furthermore, there is one and only one drum 1 above the furnace 4, the second return flue 6 and the third return flue; the steam pipeline unit comprises a centralized downcomer 2 which can be connected with a boiler barrel 1 in an adaptive mode, the centralized downcomer 2 is communicated with the boiler barrel 1, the boiler barrel 1 is supported on a boiler foundation 15 through the centralized downcomer 2, and a hearth 4, a second return flue 6 and a third return flue are horizontally supported on the boiler foundation 15.
In the embodiment of the utility model, only cooperate with furnace 4, second return flue 6 through a drum 1, the length direction of drum 1 is parallel with the length direction of furnace 4 and the length direction of second return flue 6. When the boiler is installed, a boiler foundation 15 needs to be provided, the boiler foundation 15 can specifically adopt an existing common form, and can be specifically selected according to needs, and is specifically known to those skilled in the art, and is not described herein again. In specific implementation, the drum 1 is positioned above the boiler foundation 15, and the furnace 4, the second return flue 6 and the third return flue are directly supported on the boiler foundation 15. The boiler barrel 1 is supported on the boiler foundation 15 through the centralized descending pipe 2, and the centralized descending pipe 2 can adopt a large-diameter centralized descending pipe, so that when the boiler barrel 1, the hearth 4, the second return flue 6 and the third return flue 6 are assembled on the boiler foundation 15, steel frame support is not needed, and the cost of steel frame support can be saved.
Further, the water vapor pipeline unit further comprises a first dispersion descending pipe 7 and a second dispersion descending pipe 17 which are connected with the concentration descending pipe 2 in a matched mode, the lower portion of the concentration descending pipe 2 is connected and communicated with the membrane water-cooled wall in the hearth 4 through the first dispersion descending pipe 7, and the lower portion of the concentration descending pipe 2 is connected and communicated with the membrane water-cooled wall in the second return flue 6 through the second dispersion descending pipe 17;
the header in the hearth 4 and the header in the second return flue 6 are connected and communicated with the drum 1 through corresponding steam-water eduction tubes 3 so as to send steam generated by absorbing heat of flue gas by water in corresponding membrane water walls in the hearth 4 and the second return flue 6 into the drum 1.
The embodiment of the utility model provides an in, the upper end of concentrating downcomer 2 is connected and communicates with drum 1, sets up first dispersion downcomer 7 and second dispersion downcomer 17 at the lower extreme of concentrating downcomer 2, and wherein, the lower part of concentrating downcomer 2 is connected and is communicated through the membrane water wall in first dispersion downcomer 7 and the furnace 4, and the lower part of concentrating downcomer 2 is connected and is communicated through the membrane water wall in second dispersion downcomer 17 and the second return flue 6. Therefore, the drum 1 is communicated with the membrane water wall in the hearth 4 through the concentration downcomer 2 and the first dispersion downcomer 7, and the drum 1 is communicated with the membrane water wall in the second return flue 6 through the concentration downcomer 2 and the second dispersion downcomer 17, so that water circulation can be formed.
In addition, a header in the furnace chamber 4 and a header in the second return flue 6 are connected and communicated with the drum 1 through corresponding steam-water eduction tubes 3, so that steam generated by absorption of flue gas heat by water in corresponding membrane water-cooled walls in the furnace chamber 4 and the second return flue 6 can be sent into the drum 1, namely steam generated by absorption of flue gas heat by corresponding membrane water-cooled walls in the furnace chamber 4 and the second return flue 6 can be sent into the drum 1 through the corresponding steam-water eduction tubes 3 respectively, and steam and water are separated by the drum 1.
Further, the steam heating device comprises a high-temperature superheater 8, a low-temperature superheater 9 and a high-temperature energy saver 10 which are arranged in the second return flue 6 in sequence, and when the flue gas flows to the third return flue through the second return flue 6, the flue gas is contacted with the high-temperature superheater 8, the low-temperature superheater 9 and the high-temperature energy saver 10 in sequence.
The embodiment of the utility model provides an in, the form that has now commonly used all can be adopted to overheat over heater 8, low temperature over heater 9 and high temperature energy-saving appliance 10, and when the flue gas flowed to third return flue through second return flue 6, the flue gas contacted with high temperature over heater 8, low temperature over heater 9, high temperature energy-saving appliance 10 in proper order.
Further, the third return flue comprises a connecting flue 13 communicated with the second return flue 6, a first end of the connecting flue 13 is connected with the second return flue 6, a low-temperature economizer 12 is arranged at the first end of the connecting flue 13, and a condenser 11 or an air preheater is arranged at the second end of the connecting flue 13.
The embodiment of the utility model provides an in, connect flue 13 can adopt the present pipeline form commonly used, connect flue 13 and second return flue 6 and be connected and communicate the back, can make the main part of whole third return flue and second return flue 6 be parallel to each other. Set up low temperature economizer 12 on connecting flue 13, low temperature economizer 12 is close to the joint portion of connecting flue 13 and second return flue 6, and connecting flue 13 second end sets up condenser 11 or air heater, can make exhaust flue gas temperature satisfy the demand through condenser 11, air heater, and condenser 11, low temperature economizer 12 and air heater all can adopt current commonly used form, specifically can select as required, and here is no longer repeated.
Further, the boiler comprises an overhaul platform 16 matched with the hearth 4, the second return flue 6 and the boiler barrel 1, and a plurality of platform escalators 14 are arranged on the overhaul platform 16. The embodiment of the utility model provides an in, can realize carrying out the maintenance that needs to furnace 4, second return flue 6 and boiler barrel 1 through overhauing platform 16, set up platform staircase 14 on overhauing platform 16, can get into through platform staircase 14 and overhaul the platform.
In summary, during operation, fuel gas or oil is delivered into the combustor 5, mixed with air required for combustion in the combustor 5, ignited and combusted in the furnace 4 to generate a large amount of flue gas and release a large amount of heat, the flue gas flows through the furnace 4, the second return flue 6 and the third return flue in sequence, and flows through the high-temperature superheater 8, the low-temperature superheater 9 and the high-temperature economizer 10 in sequence in the second return flue 6; in the third return flue, water in the corresponding membrane water-cooled walls of the low-temperature energy saver 12 and the condenser 11 sequentially passes through, the hearth 4 and the second return flue 6 generate partial steam after absorbing heat in flue gas, and the partial steam and the water enter the boiler barrel 1 through the steam-water outlet pipe 3 to perform steam-water separation.
The water in the boiler barrel 1 is respectively supplied to the membrane water-cooled walls corresponding to the hearth 4 and the second return flue 6 through the centralized downcomer 2, the first dispersion downcomer 7 and the second dispersion downcomer 17, so that water circulation is formed. After being led out from the boiler barrel 1, the saturated steam enters the low-temperature superheater 9, after being cooled, the saturated steam enters the high-temperature superheater 8 to be heated so as to generate steam meeting the requirement, and the steam is conveyed to a steam using point, so that the target steam is obtained.
When the boiler is supplied with water, the supplied water enters the low-temperature energy saver 12 for heating, then enters the high-temperature energy saver 10 for heating, and then enters the boiler barrel 1. The demineralized water gets into condenser 11 after the heating, gets into the deaerator deoxidization again, and the deaerated water can satisfy the feedwater of boiler, and concrete feedwater process is unanimous with current mutually, specifically is this technical field personnel familiar, and it is no longer repeated here.
Specifically, flue gas generated by burning fuel by the burner 5 flows through each heating surface in sequence to release heat, the temperature is reduced continuously, water in the condenser 11, the low-temperature energy saver 12 and the high-temperature energy saver 10 absorbs heat and then rises, steam in the low-temperature superheater 9 and the high-temperature superheater 8 absorbs heat and then rises, water in corresponding membrane water-cooled walls of the hearth 4 and the second return flue 6 absorbs heat and then generates saturated steam, and the whole process is a process of generating superheated steam after the fuel burns, releases a large amount of heat, and the water absorbs the heat, so that target steam is obtained.
The utility model only needs one boiler barrel 1 to be matched with the hearth 4 and the second return flue 6, thereby reducing the number of the boiler barrels 1 and reducing the manufacturing cost; the boiler barrel 1 is horizontally arranged, so that the height of the boiler is greatly reduced, the boiler barrel 1 is supported on a boiler foundation 15 through the concentrated descending pipe 2, the steel consumption of a steel frame and a platform escalator 14 can be reduced, the hearth 4, the second return flue 6 and the third return flue are uniformly arranged on the boiler foundation 15 and can freely expand upwards, the expansion thermal stress is reduced, and the safety is greatly improved. The hearth 4, the second return flue 6 and the third return flue can be assembled into a large piece, so that the time for field installation can be greatly reduced, the installation efficiency is improved, the device is suitable for a gas/oil boiler with the evaporation capacity of more than 10t/h, the steam pressure of more than 2.5MPa and the steam temperature of more than 350 ℃, the requirements of industrial power generation, heat supply and steam supply can be met, and the device is safe and reliable.
Claims (7)
1. A single-drum horizontally-arranged fuel oil and gas boiler is characterized in that: the boiler comprises a hearth (4) provided with a combustor (5), a second return flue (6) in adaptive connection with the hearth (4) and a third return flue in adaptive connection with the second return flue (6), wherein boiler barrels (1) which are horizontally distributed are arranged above the hearth (4), the second return flue (6) and the third return flue correspondingly, and the boiler barrels (1) are in adaptive connection with the hearth (4) and the second return flue (6) through a water vapor pipeline unit;
flue gas generated by combustion of fuel by the combustor (5) can sequentially flow through the hearth (4), the second return flue (6) and the third return flue and can be discharged through the third return flue; water in corresponding membrane type water-cooled wall pipes in the hearth (4) and the second return flue (6) can generate steam after absorbing the heat of the flue gas, and the generated steam enters the boiler barrel (1) through a steam pipeline unit; the boiler barrel (1) is used for carrying out water-vapor separation on steam, the separated saturated steam can enter the second return flue (6), and the required target steam can be obtained after the steam is heated by the steam heating device in the second return flue (6).
2. The fuel-gas boiler of claim 1, wherein the fuel-gas boiler is arranged horizontally with a single drum, and the boiler is characterized in that: one or more than one drum (1) is arranged above the hearth (4), the second return flue (6) and the third return flue; steam pipeline unit is including concentrated downcomer (2) that can be connected with drum (1) adaptation, and concentrated downcomer (2) are linked together with drum (1), and drum (1) supports on boiler basis (15) through concentrated downcomer (2), and furnace (4), second return flue (6) and the equal horizontal support of third return flue are in on boiler basis (15).
3. The fuel-gas boiler of claim 2, wherein the single-drum horizontal arrangement is characterized in that: the steam pipeline unit also comprises a first dispersion descending pipe (7) and a second dispersion descending pipe (17) which are in adaptive connection with the concentration descending pipe (2), the lower part of the concentration descending pipe (2) is connected and communicated with the membrane water wall in the hearth (4) through the first dispersion descending pipe (7), and the lower part of the concentration descending pipe (2) is connected and communicated with the membrane water wall in the second return flue (6) through the second dispersion descending pipe (17);
the header in the hearth (4) and the header in the second return flue (6) are connected and communicated with the drum (1) through corresponding steam-water eduction tubes (3) so as to send steam generated by absorbing flue gas heat by water in corresponding membrane type water-cooled walls in the hearth (4) and the second return flue (6) into the drum (1).
4. A single-drum horizontally-arranged oil-gas boiler according to any one of claims 1 to 3, characterized in that: the combustor (5) is arranged on a membrane water-cooled wall on the front side of the hearth (4), and fuel combusted by the combustor (5) comprises natural gas, petroleum gas, chemical tail gas, coke oven gas, light diesel oil and/or heavy oil.
5. A single-drum horizontally-arranged oil-gas boiler according to any one of claims 1 to 3, characterized in that: the steam heating device comprises a high-temperature superheater (8), a low-temperature superheater (9) and a high-temperature energy saver (10) which are arranged in the second return flue (6) in sequence, and when the flue gas flows to the third return flue through the second return flue (6), the flue gas is contacted with the high-temperature superheater (8), the low-temperature superheater (9) and the high-temperature energy saver (10) in sequence.
6. A single-drum horizontally-arranged oil-gas boiler according to any one of claims 1 to 3, characterized in that: the third return flue comprises a connecting flue (13) communicated with the second return flue (6), the first end of the connecting flue (13) is connected with the second return flue (6), a low-temperature economizer (12) is arranged at the first end of the connecting flue (13), and a condenser (11) or an air preheater is arranged at the second end of the connecting flue (13).
7. A single-drum horizontally-arranged oil-gas boiler according to any one of claims 1 to 3, characterized in that: still include with furnace (4), second return flue (6) and boiler barrel (1) adaptation overhaul platform (16) and set up a plurality of platform escalators (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121053182.0U CN214745644U (en) | 2021-05-17 | 2021-05-17 | Single-drum horizontally-arranged fuel oil and gas boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121053182.0U CN214745644U (en) | 2021-05-17 | 2021-05-17 | Single-drum horizontally-arranged fuel oil and gas boiler |
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| Publication Number | Publication Date |
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| CN214745644U true CN214745644U (en) | 2021-11-16 |
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| CN202121053182.0U Active CN214745644U (en) | 2021-05-17 | 2021-05-17 | Single-drum horizontally-arranged fuel oil and gas boiler |
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2021
- 2021-05-17 CN CN202121053182.0U patent/CN214745644U/en active Active
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