CN220489808U - Washing powder spray drying tail gas waste heat degree of depth recovery unit - Google Patents
Washing powder spray drying tail gas waste heat degree of depth recovery unit Download PDFInfo
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- CN220489808U CN220489808U CN202321718131.4U CN202321718131U CN220489808U CN 220489808 U CN220489808 U CN 220489808U CN 202321718131 U CN202321718131 U CN 202321718131U CN 220489808 U CN220489808 U CN 220489808U
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- temperature heat
- cooling water
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- 239000007789 gas Substances 0.000 title claims abstract description 105
- 239000002918 waste heat Substances 0.000 title claims abstract description 31
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 238000005406 washing Methods 0.000 title claims abstract description 23
- 238000001694 spray drying Methods 0.000 title claims abstract description 19
- 229940098458 powder spray Drugs 0.000 title claims abstract description 12
- 239000000498 cooling water Substances 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 14
- 230000007547 defect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000006872 improvement Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 231100000647 material safety data sheet Toxicity 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model belongs to the technical field of washing powder production, and particularly relates to a washing powder spray drying tail gas waste heat deep recovery device which comprises a draught fan, wherein a high-temperature heat exchanger and a low-temperature heat exchanger are respectively arranged at an inlet and an outlet of the draught fan, the high-temperature heat exchanger and the low-temperature heat exchanger are both radial heat pipe heat exchangers, a tail gas inlet of the low-temperature heat exchanger is connected with an outlet of the draught fan, a tail gas outlet of the high-temperature heat exchanger is connected with an inlet of the draught fan, and a cooling water outlet of the low-temperature heat exchanger is connected with a cooling water inlet of the high-temperature heat exchanger. The high-temperature heat exchanger and the low-temperature heat exchanger both adopt radial heat pipe heat exchangers, so that the defects of easy corrosion and leakage of cooling water and short service life of the dividing wall heat exchanger are overcome; and the induced draft fan is protected, the waste heat of the tail gas is recovered to the maximum extent, and the recovery rate is high.
Description
Technical Field
The utility model belongs to the technical field of washing powder production, and particularly relates to a deep recovery device for waste heat of tail gas generated in spray drying of washing powder.
Background
The washing powder is an alkaline synthetic detergent, is a chemical agent for washing clothes, and is prepared by using anionic surfactant, sodium alkylbenzenesulfonate, a small amount of nonionic surfactant and some auxiliary agents through the processes of mixing, powder spraying and the like. The drying of washing powder usually adopts a spray drying method, as shown in fig. 1, air is heated to about 300 ℃ by a hot blast stove 1, filtered and then enters from the bottom of a spray drying tower 2, washing powder slurry is pumped into the top of the spray drying tower 2 by a high-pressure pump, atomized into fine liquid drops by an atomizer, and subjected to instant dehydration and drying into hollow particles by meeting high-temperature air flow in the tower, the hollow particles fall into the bottom of the tower under the action of gravity, and tail gas at the top of the tower is sent to a spray tower for environmental protection treatment by a draught fan 5 after passing through a cyclone separator 3 and a dust remover 4. Generally, the temperature of the tail gas before the induced draft fan 5 is about 90 ℃, and the temperature of the tail gas after the induced draft fan 5 is about 80 ℃. The fuel of the hot blast stove 1 is generally anthracite and biomass, and the main components of the tail gas are dry air, water vapor, MSDS particles, NOx, VOCs, SO, H2S and the like. Wherein the moisture content is about 70%, and the dew point is about 50 ℃. This partial exhaust heat evacuation would result in significant waste, so it is necessary to recover the exhaust waste heat.
The common tail gas recovery mode in the current industry is to install a tube type heat exchanger or a plate type heat exchanger in front of a draught fan, and recover hot water or new hot air to be used in different industrial process sections of a workshop, and the waste heat recovery mode has two defects: (1) The shell-and-tube or plate heat exchanger belongs to the heat exchange of the partition wall, the wall temperature at the inlet of water or air is always low, the water or air is easily corroded by the acid gas water in the tail gas, once one point leaks water, the integrated heat exchange system is stopped, and the service life is short; (2) The heat exchanger is arranged in front of the induced draft fan, the temperature of the tail gas cannot be reduced very low and is generally higher than the dew point by more than 10 ℃, otherwise, once the tail gas generates water drops, the operation of the induced draft fan can be seriously influenced. Therefore, only sensible heat can be recovered, latent heat cannot be recovered, waste heat of tail gas is not fully utilized, and waste heat recovery rate is low.
In the prior art, patent number ZL 201921064299.1's a washing powder production waste heat recovery utilizes device, through setting up first heat exchange component and second heat exchange component, tail gas enters into first heat exchange component by the tail gas intake pipe, carries out the heat transfer for the first time with the air in the first heat exchange component after, and tail gas enters into the second heat exchange component, simultaneously, the air in the first heat exchange component is inhaled in the second heat exchange component through the breathing pipe by the second suction pump, at this moment, the tail gas is discharged after continuing to carry out the heat transfer in the second heat exchange component. The device can retrieve the waste heat in the tail gas, but after tail gas and air pass through first heat transfer module heat transfer, the difference in temperature between tail gas and the air is less, carries on the second heat transfer again, and the heat transfer is lower, and tail gas temperature can not drop very low, and waste heat recovery is low.
Disclosure of Invention
The utility model aims to provide a washing powder spray drying tail gas waste heat deep recovery device, which aims to solve the problems of short service life and low tail gas waste heat recovery rate of a heat exchanger in the background technology.
In order to achieve the technical purpose, the technical scheme of the utility model comprises the following steps:
the utility model provides a washing powder spray drying tail gas waste heat degree of depth recovery unit, includes the draught fan, the import department of draught fan is equipped with high temperature heat exchanger, and the exit is equipped with low temperature heat exchanger, high temperature heat exchanger with low temperature heat exchanger all adopts radial heat pipe heat exchanger, low temperature heat exchanger with high temperature heat exchanger's left and right sides all is equipped with the opening, and an opening is the tail gas import, and another opening is the tail gas export, low temperature heat exchanger with be equipped with cooling water import and cooling water export on high temperature heat exchanger's the lateral wall, the cooling water import is close to the tail gas export sets up, the cooling water export is close to the tail gas import sets up, low temperature heat exchanger's tail gas import with the exit linkage of draught fan, high temperature heat exchanger's tail gas export with the entrance linkage of draught fan, low temperature heat exchanger's cooling water export with high temperature heat exchanger's cooling water import is connected.
As an improvement, the high-temperature heat exchanger and the low-temperature heat exchanger comprise a shell, a tail gas inlet and a tail gas outlet are respectively arranged on two sides of the shell, a plurality of groups of heat exchange tube groups vertically arranged are arranged inside the shell, each heat exchange tube group comprises two radial heat pipes, one ends of the two radial heat pipes are communicated through a bending pipe, and the other ends of the two radial heat pipes are respectively communicated with the cooling water inlet and the cooling water outlet.
As a further improvement, the radial heat pipe adopts an eccentric radial heat pipe, the radial heat pipe comprises an inner pipe and an outer pipe, the outer pipe of the radial heat pipe is elliptical, the inner pipe of the radial heat pipe is circular, and the inner pipe is positioned at an upward eccentric position relative to the outer pipe.
As a further improvement, one end of the bottom of the low-temperature heat exchanger, which is close to the tail gas outlet, is provided with a condensate outlet.
As a further improvement, a fan is arranged in the shell of the low-temperature heat exchanger at one side close to the tail gas outlet.
As a further improvement, the outer part of the radial heat pipe is provided with fins.
By adopting the technical scheme, the utility model has the beneficial effects that:
according to the washing powder spray drying tail gas waste heat deep recovery device, the high-temperature heat exchanger and the low-temperature heat exchanger are respectively arranged in front of and behind the induced draft fan, the high-temperature heat exchanger is used for primary recovery of tail gas waste heat, then the low-temperature heat exchanger is used for secondary recovery of tail gas waste heat, sensible heat and latent heat of tail gas can be recovered, the induced draft fan is protected, the waste heat of tail gas is recovered to the greatest extent, and the recovery rate of the tail gas waste heat is improved.
The low-temperature heat exchanger and the high-temperature heat exchanger both adopt radial heat pipe heat exchangers, even if the outer pipe of the radial heat pipe is corroded by corrosive gas in tail gas, the use of the whole heat exchanger is not affected, and the defect of short service life of the traditional dividing wall type heat exchanger is overcome.
The fan is arranged in the shell of the low-temperature heat exchanger, the tail gas after heat exchange in the low-temperature heat exchanger is pumped out by utilizing the rotation of the fan impeller, and meanwhile, the tail gas at the tail gas inlet of the low-temperature heat exchanger is guided to enter the low-temperature heat exchanger, so that the heat exchange efficiency can be accelerated.
The radial heat pipe adopts an eccentric radial heat pipe, the outer pipe of the radial heat pipe is elliptical, the inner pipe is circular and is positioned at an upward eccentric position relative to the outer pipe, the phase change heat transfer area between the outer side of the inner pipe and working media is increased, and the heat transfer efficiency is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a washing powder spray drying apparatus;
fig. 2 is a schematic structural view of the present embodiment;
fig. 3 is a schematic view of the structure of the high-temperature heat exchanger in the present embodiment;
fig. 4 is a schematic view of the structure of the cryogenic heat exchanger in this embodiment;
FIG. 5 is a cross-sectional view of a radial heat pipe in the present embodiment;
wherein: the device comprises a 1-hot blast stove, a 2-spray drying tower, a 3-cyclone separator, a 4-dust remover, a 5-induced draft fan, a 6-high temperature heat exchanger, a 7-low temperature heat exchanger, an 8-shell, a 9-tail gas inlet, a 10-tail gas outlet, an 11-cooling water inlet, a 12-cooling water outlet, a 13-heat exchange tube group, a 131-radial heat tube group, a 132-inner tube, a 133-outer tube, 134-fins, a 14-cooling water inlet tube, a 15-cooling water outlet tube, a 16-fan and a 17-condensed water outlet.
Detailed Description
The utility model will be further described with reference to the following detailed description and the accompanying drawings. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
As shown in fig. 1-5, the washing powder spray drying tail gas waste heat deep recovery device comprises a draught fan 5, wherein a high-temperature heat exchanger 6 is arranged at the inlet of the draught fan 5, and a low-temperature heat exchanger 7 is arranged at the outlet of the draught fan 5.
The high-temperature heat exchanger 6 and the low-temperature heat exchanger 7 are both radial heat pipe heat exchangers, the high-temperature heat exchanger 6 and the low-temperature heat exchanger 7 both comprise a shell 8, openings are formed in the left side and the right side of the shell 8, one opening is a tail gas inlet 9, the other opening is a tail gas outlet 10, the tail gas inlet 9 of the high-temperature heat exchanger 6 is connected with the dust remover 4, the tail gas outlet 10 of the high-temperature heat exchanger 6 is connected with the inlet of the induced draft fan 5, the tail gas inlet 9 of the low-temperature heat exchanger 7 is connected with the outlet of the induced draft fan 5, washing powder enters the high-temperature heat exchanger 6 for primary heat exchange after being dried by the spray drying tower 2, enters the low-temperature heat exchanger 7 for secondary heat exchange after passing through the induced draft fan 5, cooling water in the low-temperature heat exchanger 7 absorbs tail gas and sensible heat, the temperature of the tail gas is reduced below the dew point by the flue, the tail gas enters the outlet 10 of the low-temperature heat exchanger 7 for evacuation after being treated, the temperature of the tail gas after heat exchange can be reduced, and the waste heat recovery rate of the tail gas can be improved.
The high-temperature heat exchanger 6 and the low-temperature heat exchanger 7 are respectively arranged in front of and behind the induced draft fan 5, so that the induced draft fan 5 is protected, the waste heat of tail gas is recovered to the maximum extent, the waste heat of the tail gas is fully utilized, and the recovery rate is higher.
The front side wall of the shell 8 is provided with a cooling water inlet 11 and a cooling water outlet 12, the cooling water inlet 11 is arranged near one side of the tail gas outlet 10, the cooling water outlet 12 is arranged near one side of the tail gas inlet 9, a plurality of groups of heat exchange tube groups 13 which are vertically arranged are arranged in the shell 8, each heat exchange tube group 13 comprises two radial heat tubes 131, one ends of the two radial heat tubes 131 are communicated through a bent tube, and the other ends of the two radial heat tubes 131 are respectively communicated with the cooling water inlet 11 and the cooling water outlet 12.
As a possible way, the front side wall of the shell 8 is provided with a cooling water inlet pipe 14 and a cooling water outlet pipe 15, the cooling water inlet 11 and the cooling water outlet 12 are respectively arranged at the bottom end of the cooling water inlet pipe 14 and the top end of the cooling water outlet pipe 15, one ends of the two radial heat pipes 131 far away from the bending pipes are respectively communicated with the cooling water inlet pipe 14 and the cooling water outlet pipe 15, cooling water enters the cooling water inlet pipe 14 from the cooling water inlet 11 and then enters the radial heat pipes 131, and after heat exchange is carried out in the heat exchange pipe group 13, the cooling water flows out from the cooling water outlet pipe 12 through the cooling water outlet pipe 15.
The radial heat pipe 131 comprises an inner pipe 132 and an outer pipe 133, a closed vacuum cavity is formed between the inner pipe 132 and the outer pipe 133, a heat exchange working medium is filled in the closed vacuum cavity, when tail gas passes through the outer pipe 133, the heat exchange working medium exchanges heat with the tail gas through the outer pipe 133, the heat exchange working medium absorbs heat and is vaporized, then the heat exchange working medium exchanges heat with cooling water in the inner pipe 132 through the inner pipe 132, the heat exchange working medium transfers heat to the cooling water in the inner pipe 132, and the heat exchange working medium is changed into a liquid state again, so that the recovery of the heat of the tail gas is realized.
Preferably, the radial heat pipe 131 adopts an eccentric radial heat pipe, the outer pipe 133 of the radial heat pipe 131 is elliptical, the inner pipe 132 of the radial heat pipe 131 is circular and is located at an upward eccentric position relative to the outer pipe 133, and the eccentric radial heat pipe increases the phase change heat transfer area between the outer side of the inner pipe 132 and the working medium, thereby greatly improving the heat transfer efficiency.
Preferably, the outer tube 133 of the radial heat pipe 131 is a high-frequency welded finned tube, a laser welded finned tube or a spun integrated finned tube, preferably a spun integrated finned tube; the outer tube is made of carbon steel, ND steel or stainless steel, and ND steel is preferred; the inner tube adopts a steel tube, an aluminum tube or a copper tube, preferably a copper tube and an aluminum tube.
By adopting the radial heat pipes 131 as the heat exchange tube group 13, even if the outer tube of the radial heat pipes 131 is corroded by tail gas, the cooling water in the inner tube of the radial heat pipes 131 can not leak, the use of the whole heat exchange tube group 13 can not be influenced, and the service life of the heat exchange tube group is prolonged.
In this embodiment, the cooling water inlet 11 of the high-temperature heat exchanger 6 is connected with the cooling water outlet 12 of the low-temperature heat exchanger 7 through a pipeline, the cooling water enters from the cooling water inlet 11 of the low-temperature heat exchanger 7, exchanges heat with the tail gas through the low-temperature heat exchanger 7, absorbs latent heat and sensible heat of the tail gas, then enters from the cooling water outlet 12 of the low-temperature heat exchanger 7 into the cooling water inlet 11 of the high-temperature heat exchanger 6, exchanges heat with the tail gas with higher temperature in the high-temperature heat exchanger 6, and flows out from the cooling water outlet 12 of the high-temperature heat exchanger 6.
Preferably, the heat exchange working medium in the low-temperature heat exchanger 7 adopts R-134a, and the heat exchange working medium in the high-temperature heat exchanger 6 adopts ethanol, methanol or acetone, preferably acetone.
Preferably, a fan 16 is arranged in the shell 8 of the low-temperature heat exchanger 7 at one side close to the tail gas outlet 10, and the tail gas after heat exchange in the low-temperature heat exchanger 7 is pumped out by utilizing the rotation of an impeller of the fan 16, and meanwhile, the tail gas at the tail gas inlet 9 is guided to enter the low-temperature heat exchanger 7, so that the heat exchange efficiency can be accelerated.
Preferably, the bottom of the low-temperature heat exchanger 7 is provided with a condensate outlet 17 near the bottom of one side of the tail gas outlet 10, and part of the water vapor in the tail gas subjected to heat exchange by the low-temperature heat exchanger 7 is liquefied into liquid drops and discharged through the condensate outlet 17.
Preferably, fins are arranged outside the radial heat pipes 131, and the fins can increase the heat transfer efficiency between the tail gas and the heat exchange working medium.
When the device is used, tail gas enters from the tail gas inlet 9 of the high-temperature heat exchanger 6, after primary heat exchange is carried out by the high-temperature heat exchanger 6, the temperature is reduced from 90 ℃ to 65-70 ℃, the tail gas enters into the induced draft fan 5, then enters into the low-temperature heat exchanger 7 for secondary heat exchange by the induced draft fan 5, after the latent heat is released from the tail gas in the secondary heat exchange process, the temperature is reduced to 35-40 ℃, the tail gas is discharged from the tail gas outlet 10 of the low-temperature heat exchanger 7, part of water vapor in the tail gas is liquefied and becomes liquid drops, the liquid drops are discharged from the condensation water outlet 17 at the bottom of the low-temperature heat exchanger 7, meanwhile, cooling water enters from the cooling water inlet 11 of the low-temperature heat exchanger 7, flows out from the cooling water outlet 12 of the low-temperature heat exchanger 7 after heat absorption by the low-temperature heat exchanger 7, then enters into the high-temperature heat exchanger 6 for continuous heat exchange by the cooling water inlet 11 of the high-temperature heat exchanger 6, is heated to 60-70 ℃, and finally flows out from the cooling water outlet 12 of the high-temperature heat exchanger 6.
The high-temperature heat exchanger and the low-temperature heat exchanger both adopt radial heat pipe heat exchangers, so that the defects of easy corrosion and leakage of cooling water and short service life of the dividing wall heat exchanger are overcome; the high-temperature heat exchanger is arranged in front of the induced draft fan, the low-temperature heat exchanger is arranged behind the induced draft fan, and the tail gas is subjected to secondary heat exchange, so that the induced draft fan is protected, the waste heat of the tail gas is recovered to the greatest extent, and the recovery rate is high.
The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any other corresponding changes and modifications made in accordance with the technical idea of the present utility model shall be included in the scope of the claims of the present utility model.
Claims (6)
1. The utility model provides a washing powder spray drying tail gas waste heat degree of depth recovery unit, includes the draught fan, its characterized in that, the import department of draught fan is equipped with high temperature heat exchanger, and the exit is equipped with low temperature heat exchanger, high temperature heat exchanger with low temperature heat exchanger all adopts radial heat pipe heat exchanger, low temperature heat exchanger with high temperature heat exchanger's left and right sides all is equipped with the opening, and an opening is the tail gas import, and another opening is the tail gas export, low temperature heat exchanger with be equipped with cooling water import and cooling water export on high temperature heat exchanger's the lateral wall, the cooling water import is close to the tail gas export sets up, the cooling water export is close to the tail gas import sets up, low temperature heat exchanger's tail gas import with the exit linkage of draught fan, high temperature heat exchanger's tail gas export with the entrance linkage of draught fan, low temperature heat exchanger's cooling water export with high temperature heat exchanger's cooling water import is connected.
2. The washing powder spray drying tail gas waste heat deep recovery device according to claim 1, wherein the high-temperature heat exchanger and the low-temperature heat exchanger comprise a shell, the tail gas inlet and the tail gas outlet are respectively arranged on two sides of the shell, a plurality of groups of heat exchange tube groups which are vertically arranged are arranged inside the shell, each heat exchange tube group comprises two radial heat tubes, one ends of the two radial heat tubes are communicated through a bent tube, and the other ends of the two radial heat tubes are respectively communicated with the cooling water inlet and the cooling water outlet.
3. The washing powder spray drying tail gas waste heat deep recovery device according to claim 2, wherein the radial heat pipe is an eccentric radial heat pipe, the radial heat pipe comprises an inner pipe and an outer pipe, the outer pipe of the radial heat pipe is elliptical, the inner pipe of the radial heat pipe is circular, and the inner pipe is located at an upward eccentric position relative to the outer pipe.
4. The deep recovery device for waste heat of spray-drying tail gas of washing powder according to claim 3, wherein a condensate outlet is arranged at one end of the bottom of the low-temperature heat exchanger, which is close to the tail gas outlet.
5. The deep recovery device for waste heat of spray-dried tail gas of washing powder according to claim 4, wherein a fan is arranged on one side, close to the tail gas outlet, of the shell of the low-temperature heat exchanger.
6. The washing powder spray drying tail gas waste heat deep recovery device according to claim 3, wherein fins are arranged outside the radial heat pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321718131.4U CN220489808U (en) | 2023-07-03 | 2023-07-03 | Washing powder spray drying tail gas waste heat degree of depth recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321718131.4U CN220489808U (en) | 2023-07-03 | 2023-07-03 | Washing powder spray drying tail gas waste heat degree of depth recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220489808U true CN220489808U (en) | 2024-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321718131.4U Active CN220489808U (en) | 2023-07-03 | 2023-07-03 | Washing powder spray drying tail gas waste heat degree of depth recovery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220489808U (en) |
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2023
- 2023-07-03 CN CN202321718131.4U patent/CN220489808U/en active Active
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