CN210601698U - Flue gas air mixing device for chimney at outlet of desulfurizing tower - Google Patents
Flue gas air mixing device for chimney at outlet of desulfurizing tower Download PDFInfo
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- CN210601698U CN210601698U CN201920994061.2U CN201920994061U CN210601698U CN 210601698 U CN210601698 U CN 210601698U CN 201920994061 U CN201920994061 U CN 201920994061U CN 210601698 U CN210601698 U CN 210601698U
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Abstract
The utility model provides a desulfurizing tower export chimney flue gas mixes wind device has not only improved the heat exchange efficiency of flue gas, has reduced flue gas intensification heat load effectively, avoids hot-air to spout the chimney wall moreover and leads to anticorrosive material to be destroyed. The air inlet main pipe is vertically arranged; the distribution pipeline comprises an air inlet pipeline, a distribution pipe and a middle connecting pipe; the air inlet pipeline comprises air inlet branch pipes, and inlets of the air inlet branch pipes are connected with the air inlet main pipe; the distribution pipe comprises a pipe with a hole, a sealing plate and a hole-matching connecting pipe; the perforated pipe is horizontally arranged, the outlet of the air inlet branch pipe is connected with the inlet of the perforated pipe, and the perforated pipe is provided with a perforated pipe air hole; the sealing plate is fixed at the outlet of the perforated pipe to seal the outlet of the perforated pipe; the hole-matching connecting pipe is fixed on the sealing plate and is communicated with the hole-containing pipe; the distributing pipes are radially distributed, the middle connecting pipe is positioned in the middle of the distributing pipes, and the middle connecting pipe is fixed and communicated with the hole-matching connecting pipes of the distributing pipes.
Description
Technical Field
The utility model relates to a desulfurizing tower export chimney flue gas mixes wind device for the flue gas desulfurization field.
Background
The flue gas and tail gas in the existing industries of electric power, steel, biochemistry and the like are treated by desulfurization, denitration and other treatment equipment, and in the purified flue gas after desulfurization at the outlet of a desulfurization tower of a flue gas desulfurization system, water vapor is basically in a saturated state and has large moisture content, the saturated flue gas is rapidly cooled by the atmosphere with lower temperature, and the water vapor in the flue gas is condensed into liquid state, so that smoke plume presents white, white smoke plume is formed, the formation of haze is promoted, and the trouble is caused to the life and vision of citizens. With the stricter and stricter requirements of national environmental protection treatment, the requirements of eliminating white smoke plume are continuously met in many places. For eliminating white smoke, the existing white smoke eliminating technology can be provided with a smoke heating heat exchanger between an outlet of a demister of a desulfurizing tower and a chimney, and the visual problem of smoke plume generated by condensation of water in smoke is solved by improving the temperature of clean smoke after desulfurization and dehumidifying the clean smoke. However, the water vapor in the flue gas is in a saturated state, the moisture content is large, the heating load of the flue gas is huge, and if the hot flue gas sprayed into the chimney cannot be well mixed with the cold and wet flue gas uniformly, the larger loss of the heating load is caused; and the hot air is directly sprayed into the chimney and is easily sprayed to the wall of the chimney, so that the anticorrosive material is damaged, and the operation of the whole desulfurization system is unstable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a desulfurizing tower export chimney flue gas air mixing device that structural design is reasonable, not only improved the heat exchange efficiency of flue gas, reduced flue gas intensification heat load effectively, avoid hot-air to spout the chimney wall moreover and lead to anticorrosive material to be destroyed.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides a desulfurizing tower export chimney flue gas mixes wind device which characterized in that: comprises a main air inlet pipe and a distribution pipeline; the air inlet main pipe is vertically arranged; the distribution pipeline comprises an air inlet pipeline, a distribution pipe and a middle connecting pipe; the air inlet pipeline comprises air inlet branch pipes, and inlets of the air inlet branch pipes are connected with the air inlet main pipe; the distribution pipe comprises a pipe with a hole, a sealing plate and a hole-matching connecting pipe; the perforated pipe is horizontally arranged, the outlet of the air inlet branch pipe is connected with the inlet of the perforated pipe, and the perforated pipe is provided with a perforated pipe air hole; the sealing plate is fixed at the outlet of the perforated pipe to seal the outlet of the perforated pipe; the hole-matching connecting pipe is fixed on the sealing plate and is communicated with the hole-containing pipe; the distributing pipes are radially distributed, the middle connecting pipe is positioned in the middle of the distributing pipes, and the middle connecting pipe is fixed and communicated with the hole-matching connecting pipes of the distributing pipes.
The distribution pipeline still include the air inlet sleeve pipe, the air inlet is in charge of the access connection of export through air inlet sleeve pipe and foraminiferous pipe.
The air-supply line still include the air-supply line support, the air inlet is in charge of and is installed on the air-supply line support.
Distribution pipe still include companion flange, the air inlet is in charge of the export of pipe and is passed through companion flange with the import of foraminiferous pipe and fixes together.
Foraminiferous pipe wind hole aperture be phi 50mm, the hole interval is 80mm, adjacent three foraminiferous pipe wind hole is equilateral triangle setting.
The hole-matching connecting pipe on be provided with hole-matching connecting pipe wind hole.
The hole-matching connecting pipe of middle connecting pipe and distribution pipe adopt bolted connection fixed.
Intermediate junction pipe on be provided with intermediate junction pipe wind hole.
The distribution pipe be four, be the cross form and distribute, the intermediate junction pipe is the cross.
Distribution pipeline be two, set up from top to bottom, stagger on the horizontal direction between two distribution pipelines.
Compared with the prior art, the utility model, have following advantage and effect: the hot air enters the distribution pipe through the air inlet pipeline and is sprayed into the lower part of the chimney to form countercurrent mixing with the flue gas, so that the cold flue gas and the hot air are fully mixed, and the temperature of the flue gas is increased and then uniformly diffused to the chimney. The problem of smoke plume generated by condensation of water vapor in outlet clean smoke is solved, the heat exchange efficiency of the smoke is improved, the temperature rise heat load of the smoke is effectively reduced, the corrosion-resistant material is prevented from being damaged due to the fact that hot air is directly sprayed to the wall of a chimney, and the safe operation of the desulfurization device is guaranteed. The invention has simple structure and can improve the economic benefit and the environmental protection performance. Especially, the method is very practical for the project of the later whitening improvement of the desulfurization system.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment of the present invention installed in a stack of a desulfurization tower.
Fig. 2 is a schematic structural diagram of a distribution pipeline located below in the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a distribution pipeline located above the distribution pipeline according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the distribution pipe according to the embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples, which are illustrative of the present invention and are not limited to the following examples.
Referring to fig. 1-4, the embodiment of the present invention includes an air intake manifold 1 and a distribution pipe 13.
The air inlet main pipe 1 is vertically arranged.
The distribution pipeline 13 comprises an air inlet pipeline, an air inlet sleeve 4, a distribution pipe and an intermediate connecting pipe 7.
The air inlet pipeline comprises an air inlet branch pipe 2 and an air inlet pipe bracket 3. The air inlet branch pipe 2 is horizontally arranged, and the inlet of the air inlet branch pipe is connected with the air inlet main pipe 1. The air inlet branch pipe 2 is arranged on the air inlet pipe bracket 3.
The distribution pipe comprises a mating flange 8, a perforated pipe 6, a sealing plate 10 and a hole-matching connecting pipe 11. The perforated pipe 6 is horizontally arranged, and the outlet of the air inlet branch pipe 2 is connected with the inlet of the perforated pipe 6 through the air inlet sleeve pipe 4 and fixed together through the mating flange 8. The perforated pipe 6 is evenly provided with perforated pipe air holes 5, the aperture of each perforated pipe air hole 5 is phi 50mm, the hole interval is 80mm, and the adjacent three perforated pipe air holes 5 are arranged in an equilateral triangle, so that the hot air sprayed downwards can evenly spray cold flue gas coming from the countercurrent. After the installation, the air holes 5 of the perforated pipe are separated from the wall plate of the chimney by at least 200mm, so that the corrosion-resistant materials are prevented from being damaged due to the fact that hot air is sprayed to the wall of the chimney.
A closing plate 10 is fixed to the outlet of the perforated pipe 6 to close the outlet of the perforated pipe 6.
A matching hole connecting pipe 11 is fixed on the closing plate 10 and is communicated with the perforated pipe 6. The hole-matching connecting pipe 11 is provided with a hole-matching connecting pipe air hole 9.
The distributing pipes are radially distributed, the middle connecting pipe 7 is positioned in the middle of the distributing pipes, and the middle connecting pipe 7 is fixedly connected and communicated with the hole-matching connecting pipes 11 of the distributing pipes through bolts. The middle connecting pipe 7 solves the problem of the shaking of the distribution pipe caused by the impact of the device brought by the flue gas coming from the demister outlet to the tower outlet chimney at the flow velocity of 15m/s, and the demister, the anode pipe and the like in the desulfurizing tower in the desulfurizing system modification project are installed in place by adopting bolt connection, so that the welding in the tower and the firing operation are avoided. The middle connecting pipe 7 is provided with a middle connecting pipe air hole 12. The distribution pipe is four in this embodiment, is the cross form and distributes, and intermediate junction pipe 7 is the cross, follows the even air inlet of four directions like this, not only is favorable to cold flue gas and hot-blast intensive mixing, and makes the even atress of chimney, and structural performance is better.
The material of the distribution pipe and the middle connecting pipe 7 is anti-corrosion material such as 2205 stainless steel or 1.4529 alloy pipeline, and the material of the air inlet pipeline and the air inlet sleeve 4 is carbon steel.
In this embodiment, two distribution pipes 13 are arranged up and down to form primary air mixing and secondary air mixing. The two distribution pipelines 13 are staggered by 45 degrees in the horizontal direction, so that air can be uniformly fed from eight directions, the cold flue gas and the hot air can be fully mixed, the chimney is uniformly stressed, and the structural performance is better.
The distribution pipeline 13 is arranged in a discharge chimney 14 of the desulfurizing tower through the air inlet pipe bracket 3 and positioned between two chimney ring beams, and the distance between the two distribution pipelines 13 in the vertical direction of the chimney is 1500 mm.
The utility model discloses a use method as follows:
1. connecting a hot air source main pipe with an air inlet main pipe 1;
2. and (4) feeding hot air, and opening a corresponding valve instrument on a hot air source main pipe.
3. The desulfurization system is started, clean flue gas at the outlet of the demister forms countercurrent mixing with hot air through the device, so that cold flue gas and the hot air are fully mixed, the temperature of the flue gas is uniformly diffused to a chimney after being promoted, the heat exchange efficiency of the flue gas is improved, the temperature rise heat load of the flue gas is effectively reduced, the situation that the hot air is directly sprayed to the wall of the chimney to cause the corrosion-resistant material to be damaged is avoided, and the safe operation of the desulfurization device is ensured.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a desulfurizing tower export chimney flue gas mixes wind device which characterized in that: comprises a main air inlet pipe and a distribution pipeline; the air inlet main pipe is vertically arranged; the distribution pipeline comprises an air inlet pipeline, a distribution pipe and a middle connecting pipe; the air inlet pipeline comprises air inlet branch pipes, and inlets of the air inlet branch pipes are connected with the air inlet main pipe; the distribution pipe comprises a pipe with a hole, a sealing plate and a hole-matching connecting pipe; the perforated pipe is horizontally arranged, the outlet of the air inlet branch pipe is connected with the inlet of the perforated pipe, and the perforated pipe is provided with a perforated pipe air hole; the sealing plate is fixed at the outlet of the perforated pipe to seal the outlet of the perforated pipe; the hole-matching connecting pipe is fixed on the sealing plate and is communicated with the hole-containing pipe; the distributing pipes are radially distributed, the middle connecting pipe is positioned in the middle of the distributing pipes, and the middle connecting pipe is fixed and communicated with the hole-matching connecting pipes of the distributing pipes.
2. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the distribution pipeline also comprises an air inlet sleeve, and the outlet of the air inlet branch pipe is connected with the inlet of the perforated pipe through the air inlet sleeve.
3. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the air inlet pipeline also comprises an air inlet pipe support, and the air inlet branch pipes are arranged on the air inlet pipe support.
4. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the distribution pipe also comprises a mating flange, and the outlet of the air inlet branch pipe and the inlet of the perforated pipe are fixed together through the mating flange.
5. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the aperture of the air hole of the perforated pipe is phi 50mm, the hole interval is 80mm, and the three adjacent air holes of the perforated pipe are arranged in an equilateral triangle.
6. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: and the hole matching connecting pipe is provided with a hole matching connecting pipe air hole.
7. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the middle connecting pipe is fixedly connected with the hole-matching connecting pipe of the distribution pipe by bolts.
8. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: and the middle connecting pipe is provided with a middle connecting pipe air hole.
9. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the distribution pipes are four and distributed in a cross shape, and the middle connecting pipe is in a cross shape.
10. The desulfurizing tower outlet chimney flue gas mixing device according to claim 1, characterized in that: the two distribution pipelines are arranged up and down, and the two distribution pipelines are staggered in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994061.2U CN210601698U (en) | 2019-06-28 | 2019-06-28 | Flue gas air mixing device for chimney at outlet of desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920994061.2U CN210601698U (en) | 2019-06-28 | 2019-06-28 | Flue gas air mixing device for chimney at outlet of desulfurizing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210601698U true CN210601698U (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920994061.2U Active CN210601698U (en) | 2019-06-28 | 2019-06-28 | Flue gas air mixing device for chimney at outlet of desulfurizing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210601698U (en) |
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2019
- 2019-06-28 CN CN201920994061.2U patent/CN210601698U/en active Active
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