CN210219694U - Flue type waste heat boiler with self-ash-cleaning function - Google Patents
Flue type waste heat boiler with self-ash-cleaning function Download PDFInfo
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- CN210219694U CN210219694U CN201920539661.XU CN201920539661U CN210219694U CN 210219694 U CN210219694 U CN 210219694U CN 201920539661 U CN201920539661 U CN 201920539661U CN 210219694 U CN210219694 U CN 210219694U
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Abstract
A flue type waste heat boiler with a self-ash-cleaning function comprises a flue and an evaporation tube bundle arranged in the flue, wherein a dust remover is arranged in the flue in front of the evaporation tube bundle; the dust remover comprises a dust removal sailboard and an adjusting mechanism; the adjusting mechanism consists of an adjusting disc, an adjusting handle and an adjusting valve rod; the dust removal sailboard is evenly connected to the adjusting valve rod in a rotating mode and then installed in the flue, the adjusting handle is installed on the adjusting disc in a rotating mode, one end of the adjusting handle is connected with one end of the adjusting valve rod in a rotating mode, the other end of the adjusting handle is a free end, and the adjusting handle and the adjusting disc are installed outside the flue. The utility model discloses the gas inlet is equipped with the dust remover, has reduced the deposition of flue gas on finned tube bank, has improved flue formula exhaust-heat boiler heat transfer efficiency height. Meanwhile, the large-pitch low-fin high-spiral finned tube is used as a heat transfer element, so that the problems that the light pipe type traditional flue type waste heat boiler is low in heat transfer efficiency, large in heat exchange area and large in equipment size are solved.
Description
Technical Field
The utility model belongs to the technical field of waste heat recovery, a flue formula exhaust-heat boiler with from deashing function is related to.
Background
Flue formula exhaust-heat boiler is equipment commonly used in petrochemical production, and high temperature flue gas passes through the flue of embedded refractory material, carries out the heat transfer with the water of arranging in the tube bank in the flue and produces steam, and this equipment mainly used retrieves flue gas waste heat, reduces the device energy consumption, makes the flue gas discharge up to standard. The different flue type waste heat boilers based on the power of water or steam circulation are divided into: natural circulation boilers, once-through boilers and forced circulation boilers, natural circulation boilers are used more. The flue gas that produces after the fuel burning all contains a certain amount of smoke and dust, for preventing to retrieve the flue gas waste heat in-process and produce the deposition on the heat exchange tube, flue formula exhaust-heat boiler evaporating tube is mostly the fluorescent tube. Because the waste heat boiler is a gas-liquid heat exchange process device, the smoke side is a heat exchange control thermal resistance side, and the light pipe is not beneficial to improving the total heat transfer coefficient of the heat exchanger. Therefore, the problems of low heat transfer efficiency, large equipment volume and the like of the conventional flue-type waste heat boiler generally exist, and the problem of how to solve the contradiction between the ash deposition of the equipment and the heat transfer efficiency is a difficult problem in the technical development process of the flue-type waste heat boiler.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flue formula exhaust-heat boiler with from clear grey function has reduced the deposition of flue gas on finned tube bank, has improved flue formula exhaust-heat boiler heat transfer efficiency.
The utility model discloses the technical scheme who adopts does:
a flue type waste heat boiler with a self-ash-cleaning function comprises a flue and an evaporation tube bundle arranged in the flue, wherein a dust remover is arranged in the flue in front of the evaporation tube bundle; the dust remover comprises a dust removal sailboard and an adjusting mechanism; the adjusting mechanism consists of an adjusting disc, an adjusting handle and an adjusting valve rod; the dust removal sailboard is evenly connected to the adjusting valve rod in a rotating mode and then installed in the flue, the adjusting handle is installed on the adjusting disc in a rotating mode, one end of the adjusting handle is connected with one end of the adjusting valve rod in a rotating mode, the other end of the adjusting handle is a free end, and the adjusting handle and the adjusting disc are installed outside the flue.
The dust remover is provided with a plurality of groups, and the dust removing sailboards in adjacent groups are arranged in a staggered mode.
And an ash collecting hopper is arranged in the flue below the dust remover.
The evaporation tube bundle is composed of a plurality of rows of spiral finned tubes, and the spiral finned tubes are of a large-pitch low-fin high structure, wherein the pitch is 10-20 mm, and the fin height is 6-8 mm.
The utility model discloses the gas inlet is equipped with the dust remover, has reduced the deposition of flue gas on finned tube bank, has improved flue formula exhaust-heat boiler heat transfer efficiency height. Meanwhile, the large-pitch low-fin high-spiral finned tube is used as a heat transfer element, so that the problems that the light pipe type traditional flue type waste heat boiler is low in heat transfer efficiency, large in heat exchange area and large in equipment size are solved.
The utility model discloses can be used to flue gas waste heat recovery occasion in various industrial production, especially the flue gas waste heat recovery that the dust content is great, like the waste heat recovery of various dust-laden flue gases of industrial departments such as petroleum, chemical industry, metallurgy.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the dust collector of the present invention;
fig. 3 is a partial schematic view of the coarse pitch low-fin high heat exchange tube of the present invention.
Detailed Description
The invention will be further elucidated by means of embodiments, but is not limited to the embodiments illustrated.
As shown in figure 1, the flue type waste heat boiler with the self-ash-cleaning function comprises a flue 1, a dust remover 2, a steam drum 3, an evaporation tube bundle 4 and a liquid drum 5, wherein the flue 1 is horizontally arranged, the dust remover 2 is arranged in the flue of a flue gas inlet section, the steam drum 3 is installed at the top of the flue 1, and the liquid drum 5 is arranged at the bottom of the flue 1. The evaporation tube bundle 4 is vertically arranged in the flue 1, the upper end of the evaporation tube bundle is connected with the steam pocket 3, the lower end of the evaporation tube bundle is connected with the liquid pocket 5, the barrel bodies of the steam pocket 3 and the liquid pocket 5 are radially provided with holes, and the connection mode of the heat exchange tube, the steam pocket 3 and the barrel body of the liquid pocket 5 is strength welding and sticking expansion. The flue gas enters from the flue gas inlet 101, passes through the dust remover 2 and the evaporation tube bundle 4 in the flue 1 and then is discharged from the flue gas outlet 102. Boiler feed water enters the steam pocket 3 from the water replenishing port 301, heat exchange between the boiler feed water and flue gas in the evaporation tube bundle 4 is changed from saturated water to saturated steam, natural circulation of water or steam in the evaporation tube bundle is realized between the steam pocket 3 and the liquid pocket 5 by virtue of density difference, and the saturated steam is finally discharged from the steam outlet 302 of the steam pocket 3.
As shown in fig. 2, the dust collector 2 comprises a dust collecting windsurfing board 201 and an adjusting mechanism; the adjusting mechanism consists of an adjusting disc 202, an adjusting handle 203 and an adjusting valve rod 204; the dust removal sailboard 201 is uniformly connected to the adjusting valve rod 204 in a rotating mode and then installed in the flue 1, the adjusting handle 203 is installed on the adjusting disc 202 in a rotating mode, one end of the adjusting handle is connected with one end of the adjusting valve rod 204 in a rotating mode, the other end of the adjusting handle 203 is a free end, and the adjusting handle 203 and the adjusting disc 202 are installed outside the flue 1.
The dust collectors 2 are provided in a plurality of groups, and the dust collecting sailboards 201 in adjacent groups are arranged in a staggered mode. After the dust removal sailboards are arranged in a staggered mode, the dust removal sailboards are fully distributed in the flue, the side flow of the dust-containing smoke in the dust remover is reduced as much as possible, and the dust removal efficiency of the dust remover is remarkably improved.
An ash collecting hopper 103 is arranged in the flue 1 below the dust remover 2. When the dust-containing high-temperature flue gas flows through the dust removal sailboard 201, the flue gas and the smoke dust have different densities, the flue gas can be deflected to bypass the dust removal sailboard 201, and the smoke dust collides with the dust removal sailboard 201 due to the inertia forward movement and is gradually settled. When dust is deposited on the dust removal sailboard 201 to a certain thickness, the dust can be automatically collected in the dust collection hopper 103 by turning the dust removal sailboard 201 through a manual or pneumatic adjusting structure.
As shown in figure 3, the evaporation tube bundle 4 is composed of a plurality of rows of spiral finned tubes, the specific structure of each spiral finned tube is shown in figure 3, each spiral finned tube is composed of a base tube 401 and fins 402, a large-pitch low-fin high structure is adopted, the pitch is 10-20 mm, and the fin height is 6-8 mm. The finned tubes are adopted by the evaporation tube bundle to enhance the heat transfer of the flue gas side, and the large-pitch low-fin high structure and the self-cleaning function of the flue gas passing through the fins reduce the dust accumulation of the finned tube bundle as much as possible.
Claims (4)
1. A flue type waste heat boiler with a self-ash-cleaning function comprises a flue and an evaporation tube bundle arranged in the flue, and is characterized in that a dust remover (2) is arranged in the flue (1) in front of the evaporation tube bundle (4); the dust remover (2) comprises a dust removing sailboard (201) and an adjusting mechanism; the adjusting mechanism consists of an adjusting disc (202), an adjusting handle (203) and an adjusting valve rod (204); the dust removal sailboard (201) is uniformly connected to the adjusting valve rod (204) in a rotating mode and then installed in the flue (1), the adjusting handle (203) is installed on the adjusting disc (202) in a rotating mode, one end of the adjusting handle is connected with one end of the adjusting valve rod (204) in a rotating mode, the other end of the adjusting handle is a free end, and the adjusting handle (203) and the adjusting disc (202) are installed outside the flue.
2. A flue-type waste heat boiler with self-cleaning function according to claim 1, characterized in that the dust collector (2) is provided with a plurality of groups, and the dust collecting windsurfing boards (201) in adjacent groups are arranged in a staggered manner.
3. The flue type waste heat boiler with the self-ash-cleaning function according to claim 2 is characterized in that an ash collecting hopper (103) is arranged in the flue (1) below the dust remover (2).
4. The flue type waste heat boiler with the self-ash-removing function according to claim 1, wherein the evaporation tube bundle (4) is composed of a plurality of rows of spiral finned tubes, the spiral finned tubes are of a large-pitch low-fin high structure, the pitch is 10-20 mm, and the fin height is 6-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920539661.XU CN210219694U (en) | 2019-04-19 | 2019-04-19 | Flue type waste heat boiler with self-ash-cleaning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920539661.XU CN210219694U (en) | 2019-04-19 | 2019-04-19 | Flue type waste heat boiler with self-ash-cleaning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210219694U true CN210219694U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920539661.XU Active CN210219694U (en) | 2019-04-19 | 2019-04-19 | Flue type waste heat boiler with self-ash-cleaning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210219694U (en) |
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2019
- 2019-04-19 CN CN201920539661.XU patent/CN210219694U/en active Active
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