CN217274043U - Rotary hearth furnace flue gas waste heat boiler and steam superheater equipment thereof - Google Patents
Rotary hearth furnace flue gas waste heat boiler and steam superheater equipment thereof Download PDFInfo
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- CN217274043U CN217274043U CN202123283544.8U CN202123283544U CN217274043U CN 217274043 U CN217274043 U CN 217274043U CN 202123283544 U CN202123283544 U CN 202123283544U CN 217274043 U CN217274043 U CN 217274043U
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a rotary hearth furnace flue gas exhaust-heat boiler and steam over heater equipment thereof belongs to heat energy engineering auxiliary assembly's design and manufacturing technical field. The steam superheater equipment comprises a top framework, a suspension device and a heat exchange tube group hung below the top framework through the suspension device, wherein the suspension device is a water-cooling suspension device and comprises a suspension beam and a water-cooling tube bundle; the number of the suspension beams is at least two; each suspension beam is hung below the top framework; the water-cooling tube bundle is a snake-shaped tube bundle, and is in reciprocating winding and detouring along the length extending direction of each suspension beam, one end of the water-cooling tube bundle is communicated with a descending tube of the rotary hearth furnace flue gas waste heat boiler, and the other end of the water-cooling tube bundle is communicated with an ascending tube of the rotary hearth furnace flue gas waste heat boiler. The utility model provides a prior art rotary hearth furnace flue gas exhaust-heat boiler steam superheater equipment operation in-process heat transfer tube bundle explode the pipe, suspension device drops, stifled serious problem of ash.
Description
Technical Field
The utility model relates to a steam over heater equipment, more specifically relate to a rotary hearth furnace flue gas exhaust-heat boiler and steam over heater equipment thereof.
Background
A large amount of high-temperature dust-containing smoke is generated in the production process of the rotary hearth furnace direct reduction process of the ferrous metallurgy enterprise, the temperature of the smoke is 900-1150 ℃, waste heat recovery is usually carried out on the smoke through a waste heat boiler, and the smoke carries a large amount of low-melting-point substances containing iron, heavy metal zinc and lead, alkali metals Na and K and the like, is in a gaseous state at a high temperature, is separated out along with the temperature reduction and is easy to attach to the surface of a heat exchange tube bundle. The heat exchange thermal resistance rises along with the increase of the thickness of the dust deposited on the surface of the heat exchange tube bundle; the heat exchange efficiency of the heat transfer surface is reduced, the exhaust gas temperature of the waste heat boiler is increased, and the waste heat boiler is forced to be shut down. In the actual operation process, the problems of pipe explosion of a heat transfer pipe bundle, falling of a suspension device and serious ash blockage exist in the operation process of the steam superheater equipment of the flue gas waste heat boiler of the rotary hearth furnace. Therefore, the steam superheater equipment of the rotary hearth furnace flue gas waste heat boiler with long service life is developed through modern industrial equipment, and is imperative to the rotary hearth furnace flue gas waste heat recovery equipment industry.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rotary hearth furnace flue gas waste heat boiler steam over heater equipment, this rotary hearth furnace flue gas waste heat boiler steam over heater equipment have solved the problem that the suspension device drops among the prior art rotary hearth furnace flue gas waste heat boiler steam over heater equipment operation process.
In order to achieve the above purpose, the present invention adopts the following technical solutions:
a steam superheater device of a rotary hearth furnace flue gas waste heat boiler comprises a top framework, a suspension device and a heat exchange tube group hung below the top framework through the suspension device, wherein the suspension device is a water-cooling suspension device and comprises a suspension beam and a water-cooling tube bundle; the number of the suspension beams is at least two; each suspension beam is hung below the top framework; the water cooling tube bundle is a snakelike tube bundle, and is wound along the reciprocating bending of the length extending direction of each suspension beam, one end of the water cooling tube bundle is communicated with a descending tube of the rotary hearth furnace flue gas waste heat boiler, and the other end of the water cooling tube bundle is communicated with an ascending tube of the rotary hearth furnace flue gas waste heat boiler.
Preferably, said heat exchange tube bank comprises a heat transfer tube bank; one end of the heat transfer tube bundle is communicated with an inlet distribution header of the rotary hearth furnace flue gas waste heat boiler, the other end of the heat transfer tube bundle is communicated with an outlet collection header of the rotary hearth furnace flue gas waste heat boiler, the heat transfer tube bundle is vertically arranged in a reciprocating and zigzag mode, and the heat transfer tube bundle is hung below the top framework through the water-cooling suspension device.
Preferably, the heat transfer tube bundles are arranged in a row, the pipe diameter of each heat transfer tube bundle is 32-76 mm, and the flow direction of steam in each heat transfer tube bundle is opposite to the flow direction of flue gas in a flue of the flue gas waste heat boiler of the rotary hearth furnace.
Preferably, a detection door device is arranged in the middle of the top framework, soot blowers are respectively arranged on two sides of the detection door device on the top framework, and the blowing direction of the soot blowers is parallel to the vertical direction of the heat transfer tube bundle; the bottom end of the heat transfer tube bundle is provided with a rapping transmission shaft at a position close to the elbow, and the rapping transmission shaft is fixedly connected with the heat transfer tube bundle.
Preferably, the soot blower is a gas pulse soot blower.
Preferably, the top of the heat transfer tube bundle comprises a plurality of top elbow positions, including a plurality of top elbow positions a and B arranged at intervals, wherein: the positions A of the top elbows are connected with the top framework through suspension connecting pieces which are arranged in a one-to-one correspondence manner, and the rapping transmission shafts are arranged between the heat transfer tube bundles on the two sides of the positions B of the top elbows and at positions close to the bottoms of the heat transfer tube bundles.
Preferably, the inspection door device is of a quick-opening door type structure.
Another technical purpose of the utility model is to provide a rotary hearth furnace flue gas exhaust-heat boiler, including horizontal flue, install foretell steam superheater equipment in the horizontal flue perpendicularly.
Based on foretell technical scheme, for prior art, the utility model discloses beneficial effect who has is:
1. superheater equipment, restraint through the water-cooled tube and continuously cool down to suspending the roof beam in midair, make and suspend in midair the roof beam surface and maintain lower temperature, avoided current suspension device effectively because of can not get the cooling and ablate the emergence of the condition that drops, ensured high efficiency, the stable of heat exchange go on.
2. Superheater equipment, through heat transfer tube bank bottom shake to shake transmission shaft (connect and shake ash removal device) and top gas pulse soot blower's setting, effectively avoided the emergence of stifled ash bridging operating mode, improved heat exchange efficiency greatly.
3. Over heater equipment, through optimizing hang the connecting piece and shake the mounted position of transmission shaft on heat transfer tube bundle, promote the deashing effect effectively, further avoided stifled ash bridging operating mode's emergence, improve heat exchange efficiency
4. Adopt the utility model discloses technical scheme's rotary hearth furnace flue gas exhaust-heat boiler steam over heater equipment, cordwood system modularization dispatch from the factory in the steam over heater equipment manufacture factory have improved the installation effectiveness in installation site when promoting product quality. Suspension device
Therefore, the utility model discloses technical scheme has realized that rotary hearth furnace flue gas exhaust-heat boiler steam over heater equipment moves steadily, provides powerful technical guarantee for realizing the high-efficient waste heat recovery of rotary hearth furnace flue gas exhaust-heat boiler, has better economic benefits.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
in the figure: 1. the device comprises a top framework, 2 heat exchange tube groups, 3 water-cooling suspension devices, 4 inlet distribution headers, 5 heat transfer tube bundles, 6 outlet collection headers, 7 inspection door devices, 8 suspension beams, 9 water-cooling tube bundles, 10 rapping transmission shafts and 11 gas pulse soot blowers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. The relative arrangement of the components and steps, expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations).
As shown in FIG. 1 a rotary hearth furnace flue gas exhaust-heat boiler steam over heater equipment, steam over heater equipment installs perpendicularly in rotary hearth furnace flue gas exhaust-heat boiler horizontal flue, steam over heater equipment includes top framework 1, heat exchange nest of tubes 2, water-cooling hanging device 3, heat exchange nest of tubes 2 suspends in midair on top framework 1 through water-cooling hanging device 3. The heat exchange tube group 2 comprises an inlet distribution header 4, a heat transfer tube bundle 5 and an outlet collection header 6, wherein the heat transfer tube bundle 5 is vertically and repeatedly arranged in a zigzag manner, one end of the heat transfer tube bundle 5 is communicated with the inlet distribution header 4, and the other end of the heat transfer tube bundle is communicated with the outlet collection header 6; the inlet distribution header 4 is communicated with a steam drum pipe system, and the outlet collection header 6 is communicated with a steam pipe network.
Preferably, the heat transfer tube bundles 5 are arranged in a row, the tube diameter of each heat transfer tube bundle is 32-76 mm, and the flow direction of steam in each heat transfer tube bundle 5 is opposite to the flow direction of flue gas of the rotary hearth furnace.
The water-cooling suspension device 3 is composed of a suspension beam 8 and a water-cooling tube bundle 9, one end of the water-cooling tube bundle 9 is communicated with a descending tube of the waste heat boiler, and the other end of the water-cooling tube bundle 9 is communicated with an ascending tube of the waste heat boiler.
The position of the bottom end of the heat transfer tube bundle 5, which is close to the elbow, is provided with a rapping transmission shaft 10, and the rapping transmission shaft 10 is fixedly connected with the heat transfer tube bundle 5.
The heat transfer tube bank top includes a plurality of top elbow position, including top elbow position A, the top elbow position B that a plurality of mutual intervals set up, for optimizing the mounted position on the heat transfer tube bank that hangs the connecting piece and shakes the transmission shaft, the utility model discloses be connected all through the hanging connecting piece (can adopt the pipe clamp that has the lug) that each top elbow position A set up with top framework 1, and between each top elbow position B's both sides heat transfer tube bank 5, be close to 5 bottom positions departments of heat transfer tube bank, install the transmission shaft 10 of shaking.
The top framework 1 is provided with gas pulse soot blowers 11 which are arranged in bilateral symmetry, and the blowing direction of the gas pulse soot blowers 11 is parallel to the vertical direction of the tube bundle 5.
The top framework 1 is provided with an inspection door device 7, and the inspection door device 7 is of a quick-opening door type structure.
The steam superheater equipment manufacturing plant of the flue gas waste heat boiler of the rotary hearth furnace is assembled and manufactured, and the steam superheater equipment is made to leave a factory in a modular way.
When the rotary hearth furnace flue gas waste heat boiler operates, flue gas enters from the left side of the outlet collecting header 6, and after full heat exchange is completed, the flue gas flows out from the right side of the inlet distribution header 4; saturated steam from the steam drum pipe system enters from the inlet distribution header 4, and is subjected to full countercurrent heat exchange with flue gas through the heat exchange tube bundle 2 to form superheated steam, and the superheated steam is led out from the outlet collection header 6 and enters the steam pipe network.
Claims (8)
1. The utility model provides a rotary hearth furnace flue gas exhaust-heat boiler's steam superheater equipment, includes top framework, hanging device and hangs the heat exchange nest of tubes in top framework below through hanging device, its characterized in that: the suspension device is a water-cooling suspension device and comprises a suspension beam and a water-cooling tube bundle; the number of the suspension beams is at least two; each suspension beam is hung below the top framework; the water cooling tube bundle is a snakelike tube bundle, and is wound along the reciprocating bending of the length extending direction of each suspension beam, one end of the water cooling tube bundle is communicated with a descending tube of the rotary hearth furnace flue gas waste heat boiler, and the other end of the water cooling tube bundle is communicated with an ascending tube of the rotary hearth furnace flue gas waste heat boiler.
2. The steam superheater device of the rotary hearth furnace flue gas waste heat boiler according to claim 1, characterized in that: the heat exchange tube group comprises a heat transfer tube bundle; one end of the heat transfer tube bundle is communicated with an inlet distribution header of the rotary hearth furnace flue gas waste heat boiler, the other end of the heat transfer tube bundle is communicated with an outlet collection header of the rotary hearth furnace flue gas waste heat boiler, the heat transfer tube bundle is vertically arranged in a reciprocating zigzag mode, and the heat transfer tube bundle is hung below the top framework through the water-cooling suspension device.
3. The steam superheater device of the rotary hearth furnace flue gas waste heat boiler according to claim 2, characterized in that: the heat transfer tube bundles are arranged in a row, the pipe diameter of each heat transfer tube bundle is 32-76 mm, and the flow direction of steam in each heat transfer tube bundle is opposite to the flow direction of flue gas in a flue of the flue gas waste heat boiler of the rotary hearth furnace.
4. The steam superheater device of the rotary hearth furnace flue gas waste heat boiler according to claim 3, characterized in that: a detection door device is arranged in the middle of the top framework, soot blowers are respectively arranged on two sides of the detection door device on the top framework, and the blowing direction of the soot blowers is parallel to the vertical direction of the heat transfer tube bundle; a rapping transmission shaft is arranged at the position, close to the elbow, of the bottom end of the heat transfer tube bundle and is fixedly connected with the heat transfer tube bundle.
5. The steam superheater device of the rotary hearth furnace flue gas waste heat boiler according to claim 4, characterized in that: the soot blower is a gas pulse soot blower.
6. The steam superheater device of the rotary hearth furnace flue gas waste heat boiler according to claim 4, characterized in that: the heat transfer tube bank top includes a plurality of top elbow position, includes a plurality of top elbow position A, the top elbow position B that sets up at intervals each other, wherein: the top elbow positions A are connected with the top framework through suspension connecting pieces which are arranged in a one-to-one correspondence mode, and the rapping transmission shaft is installed between the heat transfer tube bundles on the two sides of each top elbow position B and at the position close to the bottom of the heat transfer tube bundle.
7. The steam superheater device of the rotary hearth furnace flue gas waste heat boiler according to claim 4, characterized in that: the detection door device is of a quick-opening door type structure.
8. A rotary hearth furnace flue gas waste heat boiler comprising a horizontal flue, characterized in that a steam superheater device as claimed in any one of claims 1 to 7 is vertically installed in the horizontal flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123283544.8U CN217274043U (en) | 2021-12-24 | 2021-12-24 | Rotary hearth furnace flue gas waste heat boiler and steam superheater equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123283544.8U CN217274043U (en) | 2021-12-24 | 2021-12-24 | Rotary hearth furnace flue gas waste heat boiler and steam superheater equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217274043U true CN217274043U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123283544.8U Active CN217274043U (en) | 2021-12-24 | 2021-12-24 | Rotary hearth furnace flue gas waste heat boiler and steam superheater equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217274043U (en) |
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2021
- 2021-12-24 CN CN202123283544.8U patent/CN217274043U/en active Active
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