CN210511715U - Air preheater utilizing flue gas - Google Patents
Air preheater utilizing flue gas Download PDFInfo
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- CN210511715U CN210511715U CN201921482026.9U CN201921482026U CN210511715U CN 210511715 U CN210511715 U CN 210511715U CN 201921482026 U CN201921482026 U CN 201921482026U CN 210511715 U CN210511715 U CN 210511715U
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- heat exchange
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- flue
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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 discloses an air preheater utilizing flue gas, which relates to the technical field of garbage treatment and comprises a boiler top plate, a main air inlet pipe, a main air outlet pipe and a heat exchange pipe, wherein the boiler top plate is arranged horizontally and in the front-back direction, the main air inlet pipe and the main air outlet pipe are arranged in the front-back direction and are arranged above the boiler top plate, the heat exchange pipe is U-shaped and is evenly distributed between the main air inlet pipe and the main air outlet pipe, two ends of the heat exchange pipe are respectively welded with the main air inlet pipe and the main air outlet pipe and are communicated with each other, vertical convection flue side wall bodies are symmetrically arranged on the front side and the rear side of the heat exchange pipe, a horizontal convection flue lower wall body is arranged below the heat exchange pipe, a horizontal convection flue upper top plate is arranged on the top of the convection flue side wall bodies on the front side and the rear side, the heat exchange tube is arranged in the convection flue, and the upper end surface of the lower wall body of the convection flue is provided with a front-back ash containing box.
Description
Technical Field
The utility model relates to a refuse treatment's technical field, concretely relates to utilize air heater of flue gas.
Background
The most common garbage treatment is landfill, but the effect is slow, the occupied area is wide, secondary pollution is easily caused to underground water, and the garbage treatment is incineration, but the pollution to air is large and the investment is also large. When the garbage is incinerated, a garbage incineration boiler is needed, a conventional garbage incineration boiler is provided with an air preheater, the common air preheater usually adopts saturated steam and superheated steam to heat air, the heating mode can only heat the air to about 220 ℃, the ambient temperature in winter in cold regions (such as northern China) is too low, the air with too low temperature cannot maintain the normal ignition and combustion of the garbage, and diesel oil is needed for auxiliary combustion, so that the cost of the garbage incineration boiler for treating the garbage is greatly increased.
Disclosure of Invention
An object of the utility model is to provide an utilize air heater of flue gas to solve the above-mentioned defect that leads to among the prior art.
An air preheater utilizing flue gas comprises a boiler top plate, an air inlet header pipe, an air outlet header pipe and heat exchange pipes, wherein the boiler top plate is horizontal and is arranged in the front-back direction, the air inlet header pipe and the air outlet header pipe are arranged in the front-back direction and are arranged above the boiler top plate, the air inlet header pipe and the air outlet header pipe are both arranged on the boiler top plate through a first mounting frame, the heat exchange pipes are U-shaped and are uniformly distributed between the air inlet header pipe and the air outlet header pipe, a third separation frame is arranged between every two adjacent heat exchange pipes, the heat exchange pipes are arranged on the boiler top plate through a second mounting frame, the two ends of each heat exchange pipe are respectively welded with the air inlet header pipe and the air outlet header pipe and are communicated with each other, vertical convection flue side wall bodies are symmetrically arranged on the front side and the rear side of each heat exchange pipe, a horizontal, the front convection flue side wall body and the rear convection flue side wall body form a convection flue with the lower convection flue wall body and the upper convection flue top plate, the heat exchange tube is arranged in the convection flue, the upper end face of the lower convection flue wall body is provided with a front ash containing box and a rear ash containing box, and a fourth mounting frame is arranged between the ash containing boxes and the heat exchange tube.
Preferably, mounting bracket one includes mounting panel one, mounting panel one is through the mounting screw on the boiler roof, the up end welding of mounting panel one has backup pad one, the top welding of backup pad one has lower joint board, be equipped with the joint board directly over the joint board down, the medial surface and the air intake manifold of joint board and the outer wall contact of the house steward of giving vent to anger down, pass through bolted connection between joint board and the last joint board down.
Preferably, mounting bracket two includes backup pad two, backup pad two is the U style of calligraphy of invering and has mounting panel two in the bottom welding of backup pad two, mounting panel two is passed through the screw and is installed on the boiler roof, one side of backup pad two is equipped with joint board two, the medial surface of joint board two and the contact of hot exchange pipe's outer wall, pass through bolted connection between backup pad two and the joint board two.
Preferably, the third separation frame comprises a horizontal third separation plate, clamping plates are symmetrically welded to the front side and the rear side of the third separation plate, the outer side surfaces of the third clamping plates are in contact with the outer wall of the heat exchange tube, and two adjacent clamping plates are connected through bolts.
Preferably, the fourth mounting bracket comprises a fourth clamping plate, the four clamping plate are symmetrically arranged in the front and back direction, the inner side face of the fourth clamping plate is in contact with the outer wall of the heat exchange tube, the support frame of the L-shaped is welded to the outer side of the fourth clamping plate, and the support frame is mounted on the ash containing box through screws.
The utility model has the advantages that: the utility model provides an utilize air heater of flue gas: the hot air of 80-200 ℃ obtained by heating of an air preheater is sent into each heat exchange pipe through an air inlet main pipe, then the heat exchange is carried out between the flue gas with relatively high temperature and the heat exchange pipes with relatively low temperature, the temperature of the flue gas is also reduced to within 600 ℃ from about 630 ℃, the temperature of the heat exchange pipes is increased, then the heat exchange is carried out between the heat exchange pipes with relatively high temperature and the hot air with relatively low temperature, the temperature of the hot air is increased to 200-300 ℃ from 80-200 ℃, and then the hot air is led out from an air outlet main pipe and distributed to each garbage incineration boiler. Therefore, the utility model provides an utilize air heater of flue gas has rational in infrastructure, and it is with low costs to make, use and later maintenance, preheats characteristics such as effectual, and simultaneously, hot exchange pipe has also played the effect of conventional scum pipe, and the cigarette ash sediment of formation falls under the action of gravity and holds the ash box, and flue gas temperature reduces the back, has also played the guard action to later high temperature over heater.
Drawings
Fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention.
Fig. 2 is a schematic structural diagram of the first mounting frame.
Fig. 3 is a schematic structural view of the second mounting frame.
Fig. 4 is a schematic structural view of the third partition frame.
Fig. 5 is a schematic structural view of the mounting bracket four.
Wherein, 1-boiler top plate; 2-an air inlet main pipe; 3-a gas outlet header pipe; 4, mounting the first frame; 41-mounting a plate I; 42-support plate one; 43-lower snap plate; 44-an upper clamping plate; 5-a heat exchange tube; 6-mounting a second mounting frame; 61-support plate two; 62-mounting plate II; 63-clamping a second clamping plate; 7-convection flue side wall body; 8-convection flue lower wall; 9-upper top plate of convection flue; 10-ash containing box; 11-a third separating frame; 111-divider plate three; 112-clamping plate III; 12-mounting frame four; 121-clamping plate four; 122-support plate four.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1 to 5, an air preheater using flue gas comprises a boiler top plate 1, an air inlet header pipe 2, an air outlet header pipe 3 and heat exchange pipes 5, wherein the boiler top plate 1 is horizontal and arranged in the front-back direction, the air inlet header pipe 2 and the air outlet header pipe 3 are arranged in the front-back direction and arranged above the boiler top plate 1, the air inlet header pipe 2 and the air outlet header pipe 3 are both arranged on the boiler top plate 1 through a first mounting frame 4, the heat exchange pipes 5 are U-shaped and uniformly distributed between the air inlet header pipe 2 and the air outlet header pipe 3, a third partition frame 11 is arranged between every two adjacent heat exchange pipes 5, the heat exchange pipes 5 are arranged on the boiler top plate 1 through a second mounting frame 6, two ends of each heat exchange pipe 5 are respectively welded with the air inlet header pipe 2 and the air outlet header pipe 3 and are communicated with each other, the lower level of hot exchange pipe 5 is equipped with wall body 8 under the horizontally convection current flue, and the top on the convection current flue lateral wall body 7 on front and back both sides is equipped with roof 9 on the horizontally convection current flue, and preceding, back convection current flue lateral wall body 7 and convection current flue lower wall body 8 and convection current flue go up roof 9 and form a convection current flue, hot exchange pipe 5 locates in this convection current flue, the flourishing ash box 10 of orientation around the up end of wall body 8 is equipped with under the convection current flue, be equipped with mounting bracket four 12 between flourishing ash box 10 and hot exchange pipe 5.
In this embodiment, a mounting bracket 4 includes mounting panel 41, mounting panel 41 passes through the mounting screw on boiler roof 1, the up end welding of mounting panel 41 has backup pad 42, the top welding of backup pad 42 has lower joint plate 43, be equipped with joint plate 44 directly over lower joint plate 43, joint plate 43 and last joint plate 44's medial surface and air intake manifold 2 and the outer wall contact of the house steward 3 of giving vent to anger down, pass through bolted connection between joint plate 43 and the last joint plate 44 down. And the air inlet header pipe 2 and the air outlet header pipe 3 are arranged on the upper end surface of the boiler top plate 1 through a first mounting frame 4.
In this embodiment, the second mounting bracket 6 includes the second support plate 61, the second support plate 61 is the inverted U-shaped and has the second mounting plate 62 welded to the bottom of the second support plate 61, the second mounting plate 62 is installed on the boiler top plate 1 through the screw, one side of the second support plate 61 is provided with the second clamping plate 63, the inner side surface of the second clamping plate 63 contacts with the outer wall of the heat exchange tube 5, and the second support plate 61 and the second clamping plate 63 are connected through the bolt. The upper part of the heat exchange tube 5 is arranged on the upper end surface of the boiler top plate 1 through a second mounting frame 6.
In this embodiment, the third partition frame 11 includes a horizontal third partition plate 111, the third clamping plates 112 are symmetrically welded to the front and rear sides of the third partition plate 111, the outer side surfaces of the third clamping plates 112 are in contact with the outer wall of the heat exchange tube 5, and two adjacent third clamping plates 112 are connected by bolts. The separation of the two adjacent heat exchange tubes 5 is realized through the third separating frame 11, so that the two adjacent heat exchange tubes 5 are collided and damaged due to airflow disturbance when high-temperature flue gas flows through the heat exchange tubes 5, and meanwhile, the flowing high-temperature flue gas can be more fully contacted with the heat exchange tubes 5, and a better heat exchange effect can be achieved.
In this embodiment, the mounting frame four 12 includes a four clamping plates 121, two clamping plates 121 are symmetrically arranged in front and back, the inner side surfaces of the four clamping plates 121 are in contact with the outer wall of the heat exchange tube 5, an L-shaped support frame four 122 is welded on the outer side of the four clamping plates 121, and the support frame four 122 is mounted on the ash containing box 10 through screws. The lower parts of the heat exchange tubes 5 are arranged on the ash containing box 10 through the four mounting frames 12, so that when high-temperature flue gas flows through the heat exchange tubes 5, the two adjacent heat exchange tubes 5 are collided and damaged due to airflow disturbance, meanwhile, the flowing high-temperature flue gas and the heat exchange tubes 5 can be in more sufficient contact, and a better heat exchange effect can be achieved.
The utility model discloses in related an utilize air heater of flue gas's theory of operation as follows: the air inlet end of an air inlet main pipe 2 is connected with an air outlet end of a self-contained air preheater in the garbage incineration boiler, hot air at 80-200 ℃ obtained by heating the self-contained air preheater enters a heat exchange pipe 5 through the air inlet main pipe 2, when high-temperature flue gas at about 630 ℃ passes through a convection flue, the high-temperature flue gas exchanges heat with the relatively low-temperature heat exchange pipe 5, the temperature of the heat exchange pipe 5 is increased, the temperature of the flue gas is also reduced to within 600 ℃ from about 630 ℃, meanwhile, the heat exchange pipe 5 at relatively high temperature exchanges heat with the relatively low-temperature hot air, the temperature of the hot air is increased to 200-300 ℃ from 80-200 ℃, and then the hot air is led out from an air outlet main pipe 3 and distributed to the garbage incineration boilers.
To sum up, the utility model provides an utilize air heater of flue gas: the hot air of 80-200 ℃ obtained by heating of an air preheater is sent into each heat exchange pipe through an air inlet main pipe, then the heat exchange is carried out between the flue gas with relatively high temperature and the heat exchange pipes with relatively low temperature, the temperature of the flue gas is also reduced to within 600 ℃ from about 630 ℃, the temperature of the heat exchange pipes is increased, then the heat exchange is carried out between the heat exchange pipes with relatively high temperature and the hot air with relatively low temperature, the temperature of the hot air is increased to 200-300 ℃ from 80-200 ℃, and then the hot air is led out from an air outlet main pipe and distributed to each garbage incineration boiler. Therefore, the utility model provides an utilize air heater of flue gas has rational in infrastructure, and it is with low costs to make, use and later maintenance, preheats characteristics such as effectual, and simultaneously, hot exchange pipe has also played the effect of conventional scum pipe, and the cigarette ash sediment of formation falls under the action of gravity and holds the ash box, and flue gas temperature reduces the back, has also played the guard action to later high temperature over heater.
The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (5)
1. An air preheater using flue gas is characterized in that: the boiler comprises a boiler top plate (1), an air inlet header pipe (2), an air outlet header pipe (3) and heat exchange pipes (5), wherein the boiler top plate (1) is horizontal and arranged in the front-back direction, the air inlet header pipe (2) and the air outlet header pipe (3) are arranged in the front-back direction and arranged above the boiler top plate (1), the air inlet header pipe (2) and the air outlet header pipe (3) are both arranged on the boiler top plate (1) through a first mounting frame (4), the heat exchange pipes (5) are U-shaped and uniformly distributed between the air inlet header pipe (2) and the air outlet header pipe (3), a third separation frame (11) is arranged between every two adjacent heat exchange pipes (5), the heat exchange pipes (5) are arranged on the boiler top plate (1) through a second mounting frame (6), and the two ends of the heat exchange pipes (5) are respectively welded with the air inlet header pipe (, the utility model discloses a convection current flue, including hot exchange pipe (5), roof (9) on the top of convection current flue lateral wall body (7) on front and back both sides, wall body (8) under the lower level of hot exchange pipe (5) is equipped with horizontally convection current flue, and roof (9) form a convection current flue on wall body (8) and the convection current flue under preceding, back convection current flue lateral wall body (7) and the convection current flue, hot exchange pipe (5) are located in this convection current flue, the terminal surface of wall body (8) is equipped with flourishing ash box (10) of orientation around the down of convection current flue, be equipped with between flourishing ash box (10) and hot exchange pipe (5) mounting bracket four (12).
2. An air preheater using flue gas as set forth in claim 1, wherein: mounting bracket (4) are including mounting panel (41), mounting panel (41) are through the mounting screw on boiler roof (1), the up end welding of mounting panel (41) has backup pad (42), the top welding of backup pad (42) has lower joint board (43), be equipped with joint board (44) down directly over joint board (43), the medial surface and the outer wall contact of inlet manifold (2) and the house steward (3) of giving vent to anger of joint board (43) and last joint board (44) down, pass through bolted connection between joint board (43) and the last joint board (44) down.
3. An air preheater using flue gas as set forth in claim 1, wherein: mounting bracket two (6) are including backup pad two (61), U style of calligraphy and the bottom welding of backup pad two (61) are for invering has mounting panel two (62), mounting panel two (62) are through the mounting screw on boiler roof (1), one side of backup pad two (61) is equipped with joint board two (63), the medial surface of joint board two (63) and the outer wall contact of hot exchange pipe (5), pass through bolted connection between backup pad two (61) and the joint board two (63).
4. An air preheater using flue gas as set forth in claim 1, wherein: the third separating frame (11) comprises a horizontal third separating plate (111), the front side and the rear side of the third separating plate (111) are symmetrically welded with a third clamping plate (112), the outer side surface of the third clamping plate (112) is in contact with the outer wall of the heat exchange tube (5), and two adjacent third clamping plates (112) are connected through bolts.
5. An air preheater using flue gas as set forth in claim 1, wherein: the fourth mounting bracket (12) comprises a fourth clamping plate (121), the four clamping plate (121) are symmetrically arranged at the front and the back, the inner side surface of the fourth clamping plate (121) is in contact with the outer wall of the heat exchange pipe (5), the outer side of the fourth clamping plate (121) is welded with a fourth support frame (122) in an L shape, and the fourth support frame (122) is mounted on the ash containing box (10) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921482026.9U CN210511715U (en) | 2019-09-06 | 2019-09-06 | Air preheater utilizing flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921482026.9U CN210511715U (en) | 2019-09-06 | 2019-09-06 | Air preheater utilizing flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210511715U true CN210511715U (en) | 2020-05-12 |
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ID=70568712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921482026.9U Active CN210511715U (en) | 2019-09-06 | 2019-09-06 | Air preheater utilizing flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210511715U (en) |
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2019
- 2019-09-06 CN CN201921482026.9U patent/CN210511715U/en active Active
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