CN222363869U - Flue-type natural circulation waste heat boiler - Google Patents
Flue-type natural circulation waste heat boiler Download PDFInfo
- Publication number
- CN222363869U CN222363869U CN202323567149.1U CN202323567149U CN222363869U CN 222363869 U CN222363869 U CN 222363869U CN 202323567149 U CN202323567149 U CN 202323567149U CN 222363869 U CN222363869 U CN 222363869U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- flue gas
- steam drum
- exchange area
- flue
- 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.)
- Active
Links
Landscapes
- Chimneys And Flues (AREA)
Abstract
烟道式自然循环余热锅炉，涉及锅炉技术领域，其包括依次连通的烟气进口、第一换热区、第二换热区、第三换热区、第四换热区和烟气排出口，第四换热区为竖直设置的排烟通道且排烟通道内设置有用于输入外部水源的节能器，第三换热区设置有水冷系统，水冷系统包括上汽包以及通过多根换热管与上汽包连接的下汽包，节能器连接上汽包，第一换热区为竖直设置的进烟通道且进烟通道的内壁上均布有水冷壁管，下汽包与水冷壁管的底端连通，水冷壁管的顶端连通上汽包，上汽包的顶端设有蒸汽输出口。本实用新型可实现高效能利用预热、良好的除尘效果、合理的烟气流动路径以及水冷系统管壁受热更均匀的效果，该锅炉能够产生足量的蒸气并取得可观的收益。
A flue-type natural circulation waste heat boiler relates to the technical field of boilers, and includes a flue gas inlet, a first heat exchange zone, a second heat exchange zone, a third heat exchange zone, a fourth heat exchange zone and a flue gas outlet connected in sequence, the fourth heat exchange zone is a vertically arranged flue gas exhaust channel and an economizer for inputting an external water source is arranged in the flue gas exhaust channel, the third heat exchange zone is provided with a water cooling system, the water cooling system includes an upper steam drum and a lower steam drum connected to the upper steam drum through a plurality of heat exchange tubes, the economizer is connected to the upper steam drum, the first heat exchange zone is a vertically arranged flue gas inlet channel and water-cooled wall tubes are evenly distributed on the inner wall of the flue gas inlet channel, the lower steam drum is connected to the bottom end of the water-cooled wall tube, the top end of the water-cooled wall tube is connected to the upper steam drum, and the top end of the upper steam drum is provided with a steam outlet. The utility model can realize high-efficiency utilization preheating, good dust removal effect, reasonable flue gas flow path and more uniform heating effect of the water cooling system tube wall, and the boiler can generate sufficient steam and obtain considerable benefits.
Description
Technical Field
The utility model relates to the technical field of boilers, in particular to a flue type natural circulation waste heat boiler.
Background
The waste heat boiler is a boiler for heating water to a certain temperature by utilizing waste heat in waste gas, waste materials or waste liquid in various industrial processes and heat generated after combustible substances thereof are combusted. The waste heat boiler can produce hot water or steam for other working sections through waste heat recovery.
The existing waste heat boiler is easy to face the problem that all positions of the pipe wall of a water cooling system are heated unevenly in operation, and even accidents such as pipe explosion and the like can occur when the positions of part of metal pipe walls are overtemperature. In addition, such waste heat boilers are of a self-contained construction, which results in a great deal of labor for disassembly and assembly when the boiler tubes are to be serviced.
Disclosure of utility model
The utility model aims to provide a flue type natural circulation waste heat boiler so as to improve the uniformity of heating of the pipe wall of a water cooling system.
In order to solve the technical problems, the utility model adopts the following technical scheme that the flue type natural circulation waste heat boiler comprises a flue gas inlet, a first heat exchange area, a second heat exchange area, a third heat exchange area, a fourth heat exchange area and a flue gas outlet which are sequentially communicated, wherein the fourth heat exchange area is a vertically arranged flue gas channel, an energy saver for inputting an external water source is arranged in the flue gas channel, the third heat exchange area is provided with a water cooling system, the water cooling system comprises an upper steam drum and a lower steam drum connected with the upper steam drum through a plurality of heat exchange pipes, the energy saver is connected with the upper steam drum for supplying water to the upper steam drum, water cooling wall pipes are uniformly distributed on the inner wall of a vertically arranged flue gas inlet channel and a flue gas inlet channel, the lower steam drum is communicated with the bottom end of the water cooling wall pipes, the top end of the water cooling wall pipes is communicated with the upper steam drum, the top end of the upper steam drum is provided with a steam outlet, the second heat exchange area is provided with a cyclone, and the flue gas of the first heat exchange area is separated into impurities in a cyclone dust removal air flow through the cyclone dust removal function.
Preferably, an opening communicated with the cyclone dust collector is formed in one side of the upper portion of the first heat exchange area, an upper outlet for discharging flue gas is formed in the upper end of the cyclone dust collector, and a waste material port for discharging impurities is formed in the lower end of the cyclone dust collector.
More preferably, the number of cyclone dust collectors is two.
More preferably, the flue gas flow path in the third heat exchange area is guided by a plurality of guide plates to enter the fourth heat exchange area from top to bottom and then from bottom to top.
More preferably, the lower part of the third heat exchange area is provided with a plurality of cone-shaped ash falling hoppers, and the bottom ends of the ash falling hoppers are provided with waste material ports.
More preferably, the number of the energy-saving devices is multiple, and the energy-saving devices are sequentially communicated from bottom to top along the smoke discharging channel.
More preferably, the first heat exchange area, the second heat exchange area, the third heat exchange area and the fourth heat exchange area are all box structures and are independently provided with supporting frames, and each box structure is provided with a plurality of inspection doors.
Compared with the prior art, the utility model has the advantages that after the first heat exchange area is arranged to exchange heat of the waste heat flue gas, the second heat exchange area is used for separating impurities, so that the temperature of the flue gas is effectively controlled, the temperature of the flue gas entering the third heat exchange area to contact with the water cooling system is more uniform, and the risk of pipe explosion of the heat exchange pipes in the water cooling system due to uneven heating is reduced to a great extent.
Drawings
FIG. 1 is a schematic cross-sectional view of an overall structure in an embodiment of the utility model;
FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1 in the direction A-A;
FIG. 3 is a schematic sectional structural combination of the B-B and C-C directions of FIG. 1;
Fig. 4 is a schematic sectional view of the structure of fig. 1 in the direction D-D.
In the figure:
1-first heat exchange zone 2-second heat exchange zone 3-third heat exchange zone
4-Fourth heat exchange area 5-flue gas inlet 6-flue gas outlet
7-Energy-saving device 8-upper steam drum 9-cyclone dust collector
10-Lower steam drum 11-water wall pipe 12-steam outlet
13-Waste port 14-deflector 15-inspection door
16-Heat exchange tube.
Detailed Description
The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.
It should be noted that, in the present utility model, unless explicitly stated and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, in the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact through additional features therebetween.
As shown in fig. 1 to 4, the flue type natural circulation exhaust-heat boiler comprises a flue gas inlet 5, a first heat exchange area 1, a second heat exchange area 2, a third heat exchange area 3, a fourth heat exchange area 4 and a flue gas outlet 6 which are sequentially communicated, wherein the fourth heat exchange area 4 is a vertically arranged flue gas channel, an economizer 7 for inputting an external water source is arranged in the flue gas channel, the third heat exchange area 3 is provided with a water cooling system, the water cooling system comprises an upper steam drum 8 and a lower steam drum 10 connected with the upper steam drum 8 through a plurality of heat exchange pipes 16, the economizer 7 is connected with the upper steam drum 8 for supplying water to the upper steam drum 8, water cooling wall pipes 11 are uniformly distributed on the inner wall of the flue gas inlet channel and the flue gas inlet channel which are vertically arranged, the lower steam drum 10 is communicated with the bottom end of the water cooling wall pipes 11, the top end of the water cooling wall pipes 11 is communicated with the upper steam drum 8, the top end of the upper steam drum 8 is provided with a steam outlet 12, the second heat exchange area 2 is provided with a cyclone 9, and impurities in the flue gas of the first heat exchange area 1 are separated through cyclone dust removal effect after entering the cyclone 9.
In the above structure, an opening communicating with the cyclone dust collector 9 is formed on one side of the upper portion of the first heat exchange area 1, an upper outlet for discharging flue gas is formed at the upper end of the cyclone dust collector 9, and a waste material port 13 for discharging impurities is formed at the lower end of the cyclone dust collector 9.
In order to improve the separation effect of impurities in the flue gas, the number of cyclone dust collectors 9 in the present embodiment is two.
Preferably, the flue gas flow path in the third heat exchange zone 3 is guided by a plurality of guide plates 14 from top to bottom and then from bottom to top back into the fourth heat exchange zone 4. The lower part of the third heat exchange area 3 is provided with a plurality of cone-shaped ash falling hoppers, and the bottom ends of the ash falling hoppers are provided with waste material openings 13 so as to collect and further discharge dust and impurities in the flue gas.
In addition, in the present embodiment, the number of the energy-saving devices 7 is plural, and the plurality of energy-saving devices 7 are sequentially connected from bottom to top along the smoke discharging channel. The first heat exchange area 1, the second heat exchange area 2, the third heat exchange area 3 and the fourth heat exchange area 4 are box type structures and are independently provided with supporting frames, each box type structure is provided with a plurality of inspection doors 15, and the outer side of each box type structure is also provided with an escalator. The flue gas inlet 5 is also provided with a temperature measurement and pressure measurement hole so as to monitor the inlet flue gas temperature in real time and control the inlet flue gas temperature in a correlated manner.
When the flue type natural circulation waste heat boiler provided by the embodiment works, high-temperature waste heat flue gas enters from the flue gas inlet 5 and then vertically flows upwards along the first heat exchange area 1, then enters into the two cyclone dust collectors 9, the cyclone dust collectors 9 can adopt a conventional existing structure, so that the flue gas enters into the cyclone dust collectors 9 in an inclined direction and spirally flows along the interiors of the cyclone dust collectors 9, further, a larger part of dust impurities (part of solid particles or heavy-state particles) in the flue gas are separated and fall downwards to be temporarily collected, the flue gas can be discharged from an upper outlet at the upper end of the cyclone dust collectors 9 to enter into the third heat exchange area 3, then, under the guiding action of the guide plate 14, firstly enters downwards into the lower part of the third heat exchange area 3, then upwards enters into the upper part of the third heat exchange area 3 to be introduced into the top of the fourth heat exchange area 4, and then downwards flows along the fourth heat exchange area 4 until being discharged from the flue gas outlet 6; on the other hand, the external water source firstly enters the economizer 7, exchanges heat with the flue gas of the fourth heat exchange area 4 to achieve preheating, then enters the upper steam drum 8, flows downwards into the lower steam drum 10 along each heat exchange pipe 16, fully exchanges heat with the flue gas of the third heat exchange area 3 in the downwards flowing process to further raise the water temperature, then the hot water in the lower steam drum 10 flows further to the bottom end of the water wall pipe 11, is influenced by the heating of the flue gas with higher temperature in the first heat exchange area 1 at the moment, and the water in the water wall pipe 11 forms a steam form and gradually flows upwards until entering the upper steam drum 8, and finally is sent out to the outside through the steam output port 12 for use.
The flue type natural circulation waste heat boiler provided by the embodiment has the following effects:
1. the waste heat boiler utilizes the high-temperature waste heat flue gas to recycle energy, and the energy utilization efficiency is effectively improved.
2. The dust removing effect is good, namely, larger dust impurities in the flue gas are separated and collected downwards through the two cyclone dust collectors, so that the good dust removing effect is achieved, the emission of atmospheric pollutants is effectively reduced, and the ecological environment is improved.
3. The flue gas flow path is reasonable, namely the flue gas can be fully mixed and contacted when the flue gas exchanges heat through the flow path design of the third heat exchange area and the fourth heat exchange area, so that the waste heat transfer effect is improved.
4. Preheating water source, namely carrying out heat exchange and preheating on external water source through an energy saver and an upper steam drum so as to improve the heat efficiency of the system.
5. Each heat exchange area adopts box formula structural design, and each pressurized part is effectively protected simultaneously to the heat absorption is even to the convenience overhauls, the deashing.
6. The waste heat boiler is suitable for various working conditions, has stronger adaptability and stability due to the adoption of a natural circulation mode, and can realize high-efficiency work under different working conditions.
The flue type natural circulation waste heat boiler has a plurality of advantages compared with other types of waste heat boilers. Firstly, the structure is relatively simple, no complex circulating pump and control system are provided, and the maintenance and the use are convenient. And secondly, the water circulation can be realized only by natural convection without external energy supply, so that the energy is saved and the environment is protected. And finally, the operation is stable and reliable, and the service life is long.
In order to make it easier for a person skilled in the art to understand the improvements of the present utility model with respect to the prior art, some of the figures and descriptions of the present utility model have been simplified, and the above-described embodiments are preferred implementations of the present utility model, but in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of protection of the present utility model without departing from the concept of the present technical solution.
Claims (7)
1. The flue type natural circulation exhaust-heat boiler is characterized by comprising a flue gas inlet (5), a first heat exchange area (1), a second heat exchange area (2), a third heat exchange area (3), a fourth heat exchange area (4) and a flue gas outlet (6) which are sequentially communicated, wherein an energy saver (7) used for inputting an external water source is arranged in the flue gas channel which is vertically arranged in the fourth heat exchange area (4), the third heat exchange area (3) is provided with a water cooling system, the water cooling system comprises an upper steam drum (8) and a lower steam drum (10) connected with the upper steam drum (8) through a plurality of heat exchange pipes (16), the energy saver (7) is connected with the upper steam drum (8) for supplying water to the upper steam drum (8), water cooling wall pipes (11) are uniformly distributed on the inner wall of the flue gas inlet channel which is vertically arranged, the lower steam drum (10) is communicated with the bottom end of the water cooling wall pipes (11), the top end of the water cooling pipe (11) is communicated with the upper steam drum (8), and the second heat exchange area (1) is provided with a cyclone separator (9) through which is arranged on the top of the upper steam drum (8).
2. The natural circulation flue type waste heat boiler of claim 1, wherein an opening communicated with a cyclone dust collector (9) is formed in one side of the upper portion of the first heat exchange area (1), an upper outlet for discharging flue gas is formed in the upper end of the cyclone dust collector (9), and a waste material port (13) for discharging impurities is formed in the lower end of the cyclone dust collector.
3. The flue type natural circulation waste heat boiler according to claim 2, wherein the number of the cyclone dust collectors (9) is two.
4. The flue type natural circulation waste heat boiler according to claim 1, wherein the flue gas flow path in the third heat exchange zone (3) is guided to enter the fourth heat exchange zone (4) from top to bottom and then from bottom to top.
5. The natural circulation waste heat boiler of claim 4, wherein the lower part of the third heat exchange area (3) is provided with a plurality of cone-shaped ash falling hoppers, and the bottom ends of the ash falling hoppers are provided with waste material ports (13).
6. The natural circulation flue type waste heat boiler of claim 1, wherein the number of the energy-saving devices (7) is multiple, and the energy-saving devices (7) are sequentially communicated from bottom to top along the smoke discharging channel.
7. The natural circulation flue-type waste heat boiler according to any one of claims 1 to 6, wherein the first heat exchange zone (1), the second heat exchange zone (2), the third heat exchange zone (3) and the fourth heat exchange zone (4) are all box-type structures and are independently provided with supporting frames, and each box-type structure is provided with a plurality of inspection doors (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323567149.1U CN222363869U (en) | 2023-12-26 | 2023-12-26 | Flue-type natural circulation waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323567149.1U CN222363869U (en) | 2023-12-26 | 2023-12-26 | Flue-type natural circulation waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222363869U true CN222363869U (en) | 2025-01-17 |
Family
ID=94220242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323567149.1U Active CN222363869U (en) | 2023-12-26 | 2023-12-26 | Flue-type natural circulation waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222363869U (en) |
-
2023
- 2023-12-26 CN CN202323567149.1U patent/CN222363869U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202691998U (en) | A self-cleaning waste heat boiler | |
| WO2021258647A1 (en) | Natural circulation box structure for ferrosilicon waste heat boiler | |
| CN204513362U (en) | A kind of power economized boiler with waste heat recovery | |
| CN222363869U (en) | Flue-type natural circulation waste heat boiler | |
| CN205537236U (en) | Dust removal heat transfer integral type energy -saving appliance | |
| CN110469833B (en) | Biomass steam generator | |
| CN204665224U (en) | A kind of Water pipe heating pipe afterheat boiler system be built on sintering machine flue | |
| CN206669688U (en) | A kind of multichannel exhaust-heat boiler system equipment | |
| CN112283681B (en) | Angle tube type boiler with tail quenching heating surface | |
| CN101158505A (en) | Double circular currents alternating expression ambient pressure water boiler | |
| CN218443390U (en) | Converter flue gas waste heat degree of depth recovery system | |
| CN203625414U (en) | Dry cloth-bag dust removal device for carbon steel converter capable of recovering waste heat in whole process | |
| CN209688870U (en) | A heating efficient dedusting boiler for hot water supply | |
| CN208995361U (en) | A kind of pyrolysis plant flue gas heat recovery system | |
| CN109059272B (en) | Biomass hot water boiler equipment for recovering waste heat | |
| CN207945662U (en) | A kind of sintering exhaust-heat boiler device | |
| CN204345599U (en) | A kind of spray denitration boiler with expansion chamber | |
| CN101021358B (en) | Energy conserving environmental protective non-pressure heating furnace | |
| CN215063916U (en) | Waste heat recovery equipment convenient to change heat exchange module | |
| CN213542426U (en) | Vestibule type steam generator | |
| CN210921332U (en) | Small-sized waste heat boiler | |
| CN115468432A (en) | Converter flue gas waste heat degree of depth recovery system | |
| CN220471600U (en) | Overheat protection device for heating furnace | |
| CN222143380U (en) | Energy-saving heat utilization device of gas boiler | |
| CN212987154U (en) | Waste heat steam boiler that heating efficiency is high |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |