CN213865462U - Novel flue gas distributor for rotary spray wastewater drying - Google Patents
Novel flue gas distributor for rotary spray wastewater drying Download PDFInfo
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- CN213865462U CN213865462U CN202022433614.2U CN202022433614U CN213865462U CN 213865462 U CN213865462 U CN 213865462U CN 202022433614 U CN202022433614 U CN 202022433614U CN 213865462 U CN213865462 U CN 213865462U
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- channel
- flue gas
- conical ring
- guide plate
- distributor body
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 239000003546 flue gas Substances 0.000 title claims abstract description 75
- 239000002351 wastewater Substances 0.000 title claims abstract description 39
- 238000001035 drying Methods 0.000 title claims abstract description 37
- 239000007921 spray Substances 0.000 title claims abstract description 19
- 239000000779 smoke Substances 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 4
- 230000002301 combined effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000006477 desulfuration reaction Methods 0.000 description 12
- 230000023556 desulfurization Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 9
- 238000001694 spray drying Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to a novel flue gas distributor for rotatory spray waste water is dry, include: the rotary atomizer comprises a volute constant-pressure channel, a conical ring outer side channel, a flue gas distributor body, a conical ring inner side channel and a rotary atomizer. The utility model has the advantages that: the utility model discloses innovated to guide plate structure and access structure, designed and accorded with rotatory spray waste water drying's distributor, the guide plate of isobaric passageway exit comprises straight board and folded plate sub-assembly, fully carries out radial water conservancy diversion when guaranteeing the flue gas whirl, guarantees to get into the stability in outside passageway flue gas flow field; the inner channel and the outer channel are both of an incompletely contained double-channel structure, and are provided with guide plates with rotatable angles, so that the flue gas rotational flow can be enhanced, the atomized wastewater and high-temperature flue gas are uniformly mixed, and the heat and mass transfer capacities of the two phases are improved; the double-channel structure of the outer channel of the conical ring and the inner channel of the conical ring is adopted, and the combined effect of the double-layer rotary air curtain is fully exerted.
Description
Technical Field
The utility model belongs to the technical field of waste water zero discharge, especially, relate to a novel flue gas distributor for rotatory spray waste water drying.
Background
The gypsum wet flue gas desulfurization technology is the most widely applied flue gas desulfurization technology at present, but in the operation process of the gypsum wet flue gas desulfurization technology, pollutants such as hydrogen chloride, particles, heavy metals and the like in flue gas can be continuously enriched in desulfurization slurry, so that the problems of equipment corrosion, reduction of desulfurization efficiency and the like are caused; therefore, a certain amount of desulfurization wastewater needs to be discharged at intervals by the desulfurization system, the content of heavy metal and chloride ions in the desulfurization wastewater is high, and the treatment difficulty is high.
At present, the desulfurization wastewater zero-discharge technology gradually becomes a research hotspot, and the main realization modes of the technology comprise an evaporation crystallization technology, a spraying flue evaporation technology, a bypass flue spray drying evaporation technology and the like. The bypass flue spray drying evaporation technology is based on a spray drying principle, desulfurization waste water is atomized into fine fog drops with the average particle size of 10-60 mu m in a spray drying tower through a rotary atomizing disc, and then the waste water is evaporated and dried by utilizing bypass hot flue gas, so that the aim of zero emission of the desulfurization waste water is fulfilled. Compared with the traditional evaporative crystallization method, the spray drying evaporation technology has the advantages of simple system, reliable operation, low investment cost and the like. The method has the advantages that zero discharge of the desulfurization wastewater is realized by adopting a bypass flue gas drying technology, the water content of solid products in the spray drying tower is low, the drying is good, and the normal operation of a host system is not influenced.
The smoke distributor is used as a core device of the spray drying tower and has the functions of guiding and uniformly distributing hot smoke, so that the hot smoke entering the drying tower is fully mixed with the atomized wastewater, the heat and mass transfer effects are enhanced, and atomized wastewater fog drops are fully evaporated and dried before reaching the wall of the drying tower. However, the problems of uneven distribution of flue gas entering the tower, insufficient rotational flow, insufficient mixing with atomized wastewater, incomplete wastewater evaporation and the like exist in the use of the existing flue gas distributor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects in the prior art and providing a novel smoke distributor for rotary spray wastewater drying.
This kind of a novel flue gas distributor for rotatory spray waste water drying includes: the device comprises a volute constant-pressure channel, a conical ring outer channel, a flue gas distributor body, a conical ring inner channel and a rotary atomizer; the volute constant-pressure channel is positioned at the top of the flue gas distributor body, and the flue gas distributor body is arranged at the top of the drying tower; the outer side wall circumference of the smoke distributor body is sequentially provided with a conical ring outer side channel and a conical ring inner side channel from top to bottom, the smoke distributor body is conical, and the conical bottom of the smoke distributor body is provided with a rotary atomizer; the volute constant-pressure channel is formed by connecting a plurality of square gradually-reduced channels, and the volute constant-pressure channel is annular as a whole; the channel inlet of the volute constant-pressure channel is connected with the bypass flue, and the channel outlet of the volute constant-pressure channel is positioned on the inner side surface of the volute constant-pressure channel, so that the flue gas generates the same pressure on each section in the volute constant-pressure channel, and the uniformity of air flow distribution is ensured; a plurality of guide plates A are sequentially arranged on the inner side surface of the volute constant-pressure channel along the direction of a flue gas outlet from the outlet of the channel; a plurality of guide plates B which form a certain included angle with the wall surface are arranged on the channel outside the conical ring, an outer rotating shell is also arranged on the channel outside the conical ring, one connecting end of each guide plate B is fixed on the outer rotating shell, and the other connecting end of each guide plate B is fixed on the smoke distributor body; a plurality of guide plates C which form a certain included angle with the wall surface are arranged on the inner side channel of the conical ring, an inner side rotating shell is also arranged on the inner side channel of the conical ring, the connecting end of each guide plate C is fixed on the inner side rotating shell, and the inner side rotating shell is hung on the smoke distributor body through a plurality of screw rods which are arranged in a surrounding mode; the outer side rotary shell and the inner side rotary shell both encircle the smoke distributor body, and are parallel to the conical surface of the smoke distributor body; the outer side rotary shell is not completely wrapped on the smoke distributor body and the inner side rotary shell, the outer side channel of the conical ring is communicated with the inner side channel of the conical ring, and smoke passing through the outer side channel of the conical ring can partially enter the inner side channel of the conical ring.
Preferably, the guide plate B and the guide plate C consist of guide vanes and adjusting plates with screw holes, the angle adjustment of 20-50 degrees can be realized during installation, and the installation angles of the guide plate B and the guide plate C can be adjusted according to the actual wastewater atomization injection quantity and the working condition parameters of flue gas, so that the optimal mixed drying effect is obtained.
Preferably, each guide plate A consists of a straight plate and a folded plate, so that the flue gas is guided to obtain a larger velocity component in the radial direction, the flue gas is uniformly distributed, and a good rotational flow effect is generated at the same time, so that the flue gas enters the channel to form a stable rotational flow field; the plates of the straight plate and the folded plate are connected by welding through a circular tube; the guide plates A are also connected by circular pipes in a welding way; the height of guide plate A is unanimous with the height of passageway export, and polylith guide plate A is equidistant distribution around the axis of drying tower, and the distribution interval is 1/18 ~ 1/36 of the medial surface circumference of the isobaric passageway of spiral case, and specific numerical value sets up according to operating condition.
Preferably, the outer channel of the conical ring and the inner channel of the conical ring are equally spaced channels; the included angle between the guide plate B on the outer channel of the conical ring and the guide plate C on the inner channel of the conical ring and the conical shell bus of the flue gas distributor body along the flue gas direction is 20-50 degrees; guide plate B and guide plate C are equidistant distribution around the axis of drying tower, and the distribution interval corresponds 1/18 ~ 1/36 of circumference girth for guide plate B and guide plate C place height department, specifically sets up according to operating condition.
Preferably, the cone angle of the flue gas distributor body is 60 °.
Preferably, the connecting end of the screw is detachable.
The utility model has the advantages that:
the utility model discloses innovated to guide plate structure and access structure, designed and accorded with rotatory spray waste water drying's distributor, the guide plate of isobaric passageway exit comprises straight board and folded plate sub-assembly, fully carries out radial water conservancy diversion when guaranteeing the flue gas whirl, guarantees to get into the stability in outside passageway flue gas flow field; the inner channel and the outer channel are both of an incompletely contained double-channel structure, and are provided with guide plates with rotatable angles, so that the flue gas rotational flow can be enhanced, the atomized wastewater and high-temperature flue gas are uniformly mixed, and the heat and mass transfer capacities of the two phases are improved; the double-channel structure of the outer channel of the conical ring and the inner channel of the conical ring is adopted, the combined effect of the double-layer rotating air curtain is fully exerted, the good evaporation drying effect is ensured, and the good mass and heat transfer effect is also achieved. The radial spraying of atomized liquid drops can be effectively suppressed, and the atomized waste water is prevented from being sprayed to the wall surface of the drying tower.
Drawings
FIG. 1 is a schematic top view of the flue gas distributor apparatus of the present invention;
FIG. 2 is a schematic side sectional view of the flue gas distributor apparatus of the present invention;
FIG. 3 is a schematic top view of a baffle at the outlet of an isopipe;
FIG. 4 is an expanded view of a conical ring channel baffle;
fig. 5 is a schematic top view of a conical ring channel baffle.
Description of reference numerals: the device comprises a channel inlet 1, a volute constant-pressure channel 2, a channel outlet 3, a conical ring outer channel 4, a flue gas distributor body 5, a conical ring inner channel 6, a guide plate A7, a guide plate B8, a guide plate C9, a rotary atomizer 10, an outer rotary shell 11, an inner rotary shell 12, a round pipe 13, a straight plate 14, a folded plate 15, a guide vane 16, an adjusting plate 17 and a screw 18.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, the present invention can be modified in several ways without departing from the principle of the present invention, and these modifications and modifications also fall into the protection scope of the claims of the present invention.
The utility model provides a novel flue gas distributor for rotatory spray waste water drying has carried out the innovation to guide plate structure and access structure, has designed the distributor that accords with rotatory spray waste water drying, can strengthen the flue gas whirl, guarantees the double-phase homogeneous mixing of gas-liquid, promotes double-phase heat and mass transfer ability. The utility model discloses the heat reinforcing waste water evaporation to dryness effect of make full use of flue gas has avoided waste water not to evaporate completely and has caused equipment corrosion.
As shown in fig. 1 and fig. 2, a novel flue gas distributor for rotary spray wastewater drying comprises a channel inlet 1, a volute equal-pressure channel 2, a channel outlet 3, a conical ring outer channel 4, a flue gas distributor body 5, a conical ring inner channel 6, a guide plate a7 at the equal-pressure channel outlet, a guide plate B8 on the conical ring outer channel, a guide plate C9 on the conical ring inner channel and a rotary atomizer 10. The volute constant-pressure channel 2 is arranged at the top of the flue gas distributor body 5, is a tapered channel with a square section and is connected with the bypass flue. The channel outlet 3 is arranged at the inner side of the isobaric channel, and the flue gas generates the same pressure on each section in the channel, so that the distribution uniformity of the flue gas entering the tower is ensured. The flue gas tangentially enters a volute equal-pressure channel 2 from a channel inlet 1, swirls along the volute equal-pressure channel 2, and then enters a conical ring outer side channel 4 and a conical ring inner side channel 6 from a channel outlet 3.
The outlet 3 of the channel is provided with a guide plate A7 which is composed of two groups of guide plates of a straight plate 14 and a folded plate 15, so that the flue gas can obtain a large velocity component in the radial direction after being guided, the flue gas is ensured to be uniformly distributed, and a good rotational flow effect is generated at the same time, and the flue gas enters the channel to form a stable rotational flow field.
The flue gas distributor body 5 is the toper type, the cone angle is 60, the rotatory casing 11 in outside and the rotatory casing 12 in inboard of toper type ring outside passageway 4 and the toper type ring inside passageway 6 of encircleing flue gas distributor body 5 by two respectively constitute, the casing of the rotatory casing 11 in outside and the rotatory casing 12 in inboard is parallel with the conical surface of flue gas distributor body 5, toper type ring outside passageway 4 and toper type ring inside passageway 6 UNICOM, partial flue gas in the toper type ring outside passageway 4 can get into toper type ring inside passageway 5, the binary channels are the equidistant passageway respectively. The flue gas enters the outer channel 4 of the conical ring from the volute constant-pressure channel 2 in a swirling manner, and part of the flue gas in the outer channel 4 of the conical ring enters the drying tower to form a large-diameter swirling air curtain, so that the gas-liquid contact area and the flue gas retention time are effectively increased, and a good mass and heat transfer effect is obtained; the other part of the flue gas enters the drying tower through the conical ring inner side channel 6 in an accelerating rotational flow mode, is fully contacted with atomized spray waste water, enables a large amount of liquid drops to be quickly evaporated to dryness, is high in speed, can effectively suppress radial spray of the atomized liquid drops, and therefore prevents the atomized waste water from being sprayed to the wall surface of the drying tower. The double-channel structure fully exerts the combined effect of the double-layer rotary air curtain and ensures good drying effect.
The inner side channel 6 of the conical ring and the outer side channel 4 of the conical ring are respectively provided with a plurality of guide plates B8 and C9 which form an included angle of 20-50 degrees with a conical shell bus, the guide plates B8 and C9 are distributed around the central axis of the drying tower at equal intervals, one connecting end of each guide plate B8 is fixed on the outer side rotating shell 11, and the other connecting end of each guide plate B8 is fixed on the smoke distributor body 5; the connecting end of the guide plate C9 is fixed on the inner rotary shell 12, the guide plate B8 and the guide plate C9 are composed of a guide vane 16 and an adjusting plate 17 with screw holes, and the angle adjustment of 20-50 degrees can be realized during installation. The installation angle of the guide plate is adjusted according to the actual wastewater atomization injection quantity and the flue gas working condition, so that a good evaporation drying effect is obtained.
Claims (6)
1. A novel flue gas distributor for rotary spray wastewater drying, comprising: the device comprises a volute constant-pressure channel (2), a conical ring outer side channel (4), a flue gas distributor body (5), a conical ring inner side channel (6) and a rotary atomizer (10); the volute constant-pressure channel (2) is positioned at the top of the flue gas distributor body (5), and the flue gas distributor body (5) is arranged at the top of the drying tower; a conical ring outer side channel (4) and a conical ring inner side channel (6) are sequentially arranged on the circumference of the outer side wall of the smoke distributor body (5) from top to bottom, the smoke distributor body (5) is conical, and a rotary atomizer (10) is arranged at the conical bottom of the smoke distributor body (5);
the volute constant-pressure channel (2) is formed by connecting a plurality of square gradually-reduced channels, and the volute constant-pressure channel (2) is annular as a whole; a channel inlet (1) of the volute constant-pressure channel (2) is connected with the bypass flue, and a channel outlet (3) of the volute constant-pressure channel (2) is positioned on the inner side surface of the volute constant-pressure channel (2);
a plurality of guide plates A (7) are sequentially arranged on the inner side surface of the volute constant-pressure channel (2) along the direction of the flue gas outlet from the channel outlet (3); a plurality of guide plates B (8) forming a certain included angle with the wall surface are arranged on the conical ring outer side channel (4), an outer side rotating shell (11) is further arranged on the conical ring outer side channel (4), one connecting end of each guide plate B (8) is fixed on the outer side rotating shell (11), and the other connecting end of each guide plate B (8) is fixed on the smoke distributor body (5); a plurality of guide plates C (9) forming a certain included angle with the wall surface are arranged on the inner channel (6) of the conical ring, an inner rotating shell (12) is further arranged on the inner channel (6) of the conical ring, the connecting end of each guide plate C (9) is fixed on the inner rotating shell (12), and the inner rotating shell (12) is hung on the smoke distributor body (5) through a plurality of screw rods (18) arranged in a surrounding mode; the outer side rotary shell (11) and the inner side rotary shell (12) both surround the smoke distributor body (5), and the outer side rotary shell (11) and the inner side rotary shell (12) are both parallel to the conical surface of the smoke distributor body (5); the outer side rotary shell (11) is not completely wrapped on the smoke distributor body (5) and the inner side rotary shell (12), and the outer side channel (4) of the conical ring is communicated with the inner side channel (6) of the conical ring.
2. The novel flue gas distributor for rotary spray wastewater drying according to claim 1, characterized in that: the guide plate B (8) and the guide plate C (9) are composed of guide vanes (16) and adjusting plates (17) with screw holes.
3. The novel flue gas distributor for rotary spray wastewater drying according to claim 1, characterized in that: each guide plate A (7) consists of a straight plate (14) and a folded plate (15), and plates of the straight plate (14) and the folded plate (15) are connected by a circular tube (13) in a welding way; the guide plates A (7) are also connected by welding through round pipes (13); the height of the guide plate A (7) is consistent with that of the channel outlet (3), the guide plates A (7) are distributed around the central axis of the drying tower at equal intervals, and the distribution intervals are 1/18-1/36 of the circumference of the inner side surface of the volute equal-pressure channel (2).
4. The novel flue gas distributor for rotary spray wastewater drying according to claim 1, characterized in that: the conical ring outer channel (4) and the conical ring inner channel (6) are equidistant channels; the included angle between a guide plate B (8) on the outer channel (4) of the conical ring and a guide plate C (9) on the inner channel (6) of the conical ring and a conical shell bus of the flue gas distributor body (5) along the flue gas direction is 20-50 degrees; the guide plates B (8) and the guide plates C (9) are distributed at equal intervals around the central axis of the drying tower, and the distribution intervals are 1/18-1/36 of the circumferences of the corresponding circumferences of the heights of the guide plates B (8) and the guide plates C (9).
5. The novel flue gas distributor for rotary spray wastewater drying according to claim 1, characterized in that: the cone angle of the flue gas distributor body (5) is 60 °.
6. The novel flue gas distributor for rotary spray wastewater drying according to claim 1, characterized in that: the connecting end of the screw rod (18) is detachable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022433614.2U CN213865462U (en) | 2020-10-28 | 2020-10-28 | Novel flue gas distributor for rotary spray wastewater drying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022433614.2U CN213865462U (en) | 2020-10-28 | 2020-10-28 | Novel flue gas distributor for rotary spray wastewater drying |
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| Publication Number | Publication Date |
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| CN213865462U true CN213865462U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022433614.2U Active CN213865462U (en) | 2020-10-28 | 2020-10-28 | Novel flue gas distributor for rotary spray wastewater drying |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890471A (en) * | 2017-04-19 | 2017-06-27 | 常州机电职业技术学院 | Milk drying device |
| CN112374565A (en) * | 2020-10-28 | 2021-02-19 | 浙江天地环保科技股份有限公司 | Novel flue gas distributor for rotary spray wastewater drying |
-
2020
- 2020-10-28 CN CN202022433614.2U patent/CN213865462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890471A (en) * | 2017-04-19 | 2017-06-27 | 常州机电职业技术学院 | Milk drying device |
| CN112374565A (en) * | 2020-10-28 | 2021-02-19 | 浙江天地环保科技股份有限公司 | Novel flue gas distributor for rotary spray wastewater drying |
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Address after: 310012 99 Huaxing Road, Xihu District, Hangzhou, Zhejiang (Hangzhou Neusoft business building) Patentee after: Zhejiang Zheneng Technology Environmental Protection Group Co.,Ltd. Country or region after: China Address before: 310012 99 Huaxing Road, Xihu District, Hangzhou, Zhejiang (Hangzhou Neusoft business building) Patentee before: Zhejiang Tiandi Environmental Protection Technology Co.,Ltd. Country or region before: China |
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