CN220531135U - Waste gas treatment device suitable for indirect heat drying of wet sludge - Google Patents
Waste gas treatment device suitable for indirect heat drying of wet sludge Download PDFInfo
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- CN220531135U CN220531135U CN202322060942.6U CN202322060942U CN220531135U CN 220531135 U CN220531135 U CN 220531135U CN 202322060942 U CN202322060942 U CN 202322060942U CN 220531135 U CN220531135 U CN 220531135U
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- 239000002912 waste gas Substances 0.000 title claims abstract description 98
- 239000010802 sludge Substances 0.000 title claims abstract description 33
- 238000001035 drying Methods 0.000 title claims abstract description 30
- 239000002351 wastewater Substances 0.000 claims abstract description 60
- 239000000428 dust Substances 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 18
- 239000002826 coolant Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000011010 flushing procedure Methods 0.000 claims description 21
- 239000003595 mist Substances 0.000 claims description 6
- 239000010963 304 stainless steel Substances 0.000 claims description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 2
- 239000003546 flue gas Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000007791 dehumidification Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 16
- 238000001816 cooling Methods 0.000 description 14
- 239000000498 cooling water Substances 0.000 description 6
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000000149 chemical water pollutant Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 235000014102 seafood Nutrition 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model discloses an exhaust gas treatment device suitable for indirect heat drying of wet sludge, which comprises a primary indirect heat exchange chamber, a secondary indirect heat exchange chamber, a dust-containing wastewater collection hopper, a primary demister, a tertiary indirect heat exchange chamber, a clearer wastewater collection hopper, a secondary demister, an indirect heater and an induced draft fan; the cooling medium enters from the three-stage indirect heat exchange chamber, the cooling medium comes out from the one-stage indirect heat exchange chamber through the design of the internal flow passage, the waste gas is cooled in a grading way, the dust-containing waste water is captured through the one-stage demister, the clear waste water is captured through the second-stage demister, and the dust-containing waste water is directly discharged to a factory waste water system, so that the dehumidification, dust removal and heating of the waste gas are realized. The utility model can improve the heat efficiency of the tail gas after treatment entering the incineration system, and avoid the scaling and corrosion phenomena of the fan, the air duct and the boiler air preheater.
Description
Technical Field
The utility model belongs to the field of energy environment-friendly equipment, and particularly relates to an exhaust gas treatment device suitable for indirect heat drying of wet sludge, which is used for dehumidifying, dedusting and heating exhaust gas of indirect heat drying of wet sludge.
Background
The drying treatment of the wet sludge or the wet material has various ways, is driven by the environmental protection requirement and economic benefit, comprehensively compares the benefits of various drying ways, and is an economic and environment-friendly way with the minimum amount of waste gas generated by indirect drying. At present, the pretreatment of waste gas by wet sludge or wet material indirect drying industry is not important enough, and the following problems exist:
(1) The waste gas generated by drying is directly discharged to a deodorizing system for treatment or used as combustion air of an incinerator after being subjected to simple cyclone dust removal and indirect condensation. Firstly, condensing a large amount of water vapor in the waste gas, collecting and discharging the condensed water vapor by gravity, wherein a large amount of dust and fog drops are carried in the condensed water vapor, so that subsequent fans and equipment are corroded, and the scaling of fan blades affects dynamic balance and needs frequent shutdown for flushing; and secondly, waste gas generated by drying is not subjected to fractional condensation, no demister is used for capturing, the condenser needs to be flushed by process water, and the fan needs to be frequently stopped for flushing, so that the waste water amount is increased.
(2) The general steam of the indirect sludge drying system is used as a sludge drying heat source, the steam turns the sludge in the dryer into saturated condensate water with the pressure of 0.1-0.2 MPa and the temperature of 100 ℃ after drying, and the condensate water is cooled to about 50 ℃ by circulating cooling water and then recycled, so that the heat of the heat source is wasted, the consumption of the circulating cooling water is increased, and the energy saving and uneconomical effects are achieved.
Disclosure of Invention
The utility model provides a treatment device suitable for indirect heat drying of wet sludge, which aims to solve the problems that the fan is corroded, the scaling of a fan blade damages dynamic balance, the heat of a drying heat source is wasted and the like caused by high-humidity dust-containing waste gas generated by the indirect heat drying of the existing wet sludge, and realize the indirect heat drying energy-saving and stable operation of the wet sludge.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
an exhaust gas treatment device suitable for indirect heat drying of wet sludge comprises a primary indirect heat exchange chamber, a secondary indirect heat exchange chamber, a dust-containing wastewater collection bucket, a primary demister, a tertiary indirect heat exchange chamber, a clearer wastewater collection bucket, a secondary demister, an indirect heater and an induced draft fan; the waste gas channels of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber, the tertiary indirect heat exchange chamber and the indirect heater are sequentially connected, and the cooling medium channels of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber and the tertiary indirect heat exchange chamber are sequentially connected; the primary demister is arranged at the joint of the waste gas channels of the two-stage indirect heat exchange chamber and the three-stage indirect heat exchange chamber and is used for demisting waste gas entering the waste gas channels of the three-stage indirect heat exchange chamber; the dust-containing wastewater collection hopper is arranged at the joint of the waste gas channels of the first-stage indirect heat exchange chamber and the second-stage indirect heat exchange chamber and is used for collecting dust-containing wastewater generated after the waste gas is cooled by the first-stage indirect heat exchange chamber and the second-stage indirect heat exchange chamber; the secondary demister is arranged at the joint of the waste gas channel of the indirect heat exchange chamber and the indirect heater and is used for demisting waste gas at the outlet of the waste gas channel of the indirect heat exchange chamber; the clear wastewater collection hopper is arranged at the joint of the waste gas channels of the three-stage indirect heat exchange chamber and the indirect heater and is used for collecting clear wastewater generated after the waste gas is cooled by the three-stage indirect heat exchange chamber; the induced draft fan is connected with an outlet of an exhaust gas channel of the indirect heater.
The high-humidity and dust-containing hot waste gas subjected to pre-dedusting sequentially passes through a device waste gas inlet, a first-stage indirect water-cooling heat exchange chamber, a second-stage water-cooling heat exchange chamber, a first-stage demister, a third-stage indirect water-cooling heat exchange chamber, a second-stage demister, an expansion joint and an indirect heater and then enters a fan for discharge; dust-containing wastewater is discharged from a drain outlet of a collecting bucket at the bottom of the first-stage indirect water-cooling heat exchange chamber and the second-stage indirect water-cooling heat exchange chamber, and clearer wastewater is discharged from a drain outlet of a collecting bucket at the bottom of the third-stage indirect water-cooling heat exchange chamber.
The cooling medium enters from the three-stage indirect water-cooling heat exchange chamber, the cooling medium is designed through the internal flow passage to come out from the first-stage indirect water-cooling heat exchange chamber, the waste gas is cooled in a grading manner, the dust-containing waste water is captured through the first-stage demister, the clear waste water is captured through the second-stage demister, the dust-containing waste water is directly discharged to the factory waste water system, and the clear waste water is pressurized through the pump to be used for flushing the waste gas side heat exchange surfaces of the first-stage indirect water-cooling heat exchange chamber, the second-stage indirect water-cooling heat exchange chamber and the third-stage indirect water-cooling heat exchange chamber.
After the waste gas passes through the primary demister and the secondary demister, the dust content in the waste gas is lower than 30mg/Nm 3 The content of fog drops is lower than 75mg/Nm 3 The heat of the heat exchanger can not be blocked by scaling when the heat exchanger enters the indirect heater for heating.
Further, the directions of the waste gas channels of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber and the tertiary indirect heat exchange chamber are all vertical directions.
Further, the waste gas channels of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber and/or the tertiary indirect heat exchange chamber are also provided with an indirect heat exchange chamber flushing water interface, and the flushing water interface is connected with an outlet of the clearer waste water collecting bucket.
Further, the air channel expansion joint is arranged at the joint of the waste gas channel of the indirect heat exchange chamber and the indirect heater.
Further, demister flushing water interfaces are further arranged at the joints of the waste gas channels of the two-stage indirect heat exchange chamber and the three-stage indirect heat exchange chamber and the waste gas channels of the three-stage indirect heat exchange chamber and the indirect heater.
Further, the material of the exhaust gas treatment device is 304 stainless steel or higher-requirement material. The device adopts 304 stainless steel materials for municipal sludge or waste gas generated by drying materials without chemical corrosion, and selects corresponding materials (such as 2205 bidirectional stainless steel) for waste gas of special materials (such as seafood sludge and landfill leachate sludge) according to the characteristics of the waste gas.
Further, the primary demister and the secondary demister are made of polypropylene or are made of corresponding materials according to the characteristics of waste gas.
Further, the indirect heater adopts a low-quality heat source obtained by indirect heat drying of wet sludge or wet materials to heat the waste gas to a dew point (about 75-90 ℃) or above, and the temperature of the waste gas at the outlet of the indirect heater is controlled to be 5-15 ℃ higher than the dew point temperature.
Compared with the prior art, the utility model has the beneficial effects that: the induced draft fan does not need to be stopped for flushing every half month; the temperature of the treated tail gas entering the incineration system is higher, so that the heat efficiency of the system is improved, and the phenomenon that the air preheater of the boiler is free from blockage and scaling is avoided; the steam condensate (0.1-0.2 MPa, 100 ℃) of the drier does not need to use circulating cooling water, thereby saving energy consumption.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic structural diagram of an exhaust gas dehumidifying, dedusting and heating apparatus suitable for indirect heat drying of wet sludge according to an embodiment of the present utility model;
in the figure: 1. an exhaust gas inlet; 2. a primary indirect heat exchange chamber; 3. the second stage is connected with a heat exchange chamber; 4. dust-containing wastewater collection hopper; 5. a primary mist eliminator; 6. a three-stage indirect heat exchange chamber; 7. a clearer wastewater collection bucket; 8. a secondary mist eliminator; 9. an air duct expansion joint; 10. an indirect heater; 11. an induced draft fan; 12. a dust-containing wastewater outlet; 13. a clearer waste water outlet; 14. a water pump; 15. a cooling medium inlet; 16. a cooling medium outlet; 17. an indirect heat exchange chamber flushing water interface; 18. a demister flushing water interface; 19. an indirect heater heat source inlet; 20. and an indirect heater heat source outlet.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides an exhaust gas treatment device suitable for indirect heat drying of wet sludge, which aims at the characteristics of exhaust gas of indirect heat drying of wet sludge and comprises a primary indirect heat exchange chamber 2, a secondary indirect heat exchange chamber 3, a dust-containing wastewater collection hopper 4, a primary demister 5, a tertiary indirect heat exchange chamber 6,A clearer wastewater collection hopper 7, a secondary demister 8, an indirect heater 10 and an induced draft fan 11; the waste gas channels of the primary indirect heat exchange chamber 2, the secondary indirect heat exchange chamber 3, the tertiary indirect heat exchange chamber 6 and the indirect heater 10 are sequentially connected, and the cooling medium channels of the primary indirect heat exchange chamber 2, the secondary indirect heat exchange chamber 3 and the tertiary indirect heat exchange chamber 6 are sequentially connected; the primary demister 5 is arranged at the joint of the waste gas channels of the two-stage indirect heat exchange chamber 3 and the three-stage indirect heat exchange chamber 6 and is used for demisting waste gas entering the waste gas channel of the three-stage indirect heat exchange chamber 6; the dust-containing wastewater collection hopper 4 is arranged at the joint of the waste gas channels of the first-stage indirect heat exchange chamber 2 and the second-stage indirect heat exchange chamber 3 and is used for collecting dust-containing wastewater generated after the waste gas is cooled by the first-stage indirect heat exchange chamber 2 and the second-stage indirect heat exchange chamber 3; the secondary demister 8 is arranged at the joint of the waste gas channels of the three-stage indirect heat exchange chamber 6 and the indirect heater 10 and is used for demisting waste gas at the outlet of the waste gas channel of the three-stage indirect heat exchange chamber 6; the clearer waste water collecting hopper 6 is arranged at the joint of the waste gas channels of the three-stage indirect heat exchange chamber 6 and the indirect heater 10 and is used for collecting clearer waste water generated after the waste gas is cooled by the three-stage indirect heat exchange chamber 6, and the induced draft fan 11 is connected with the outlet of the waste gas channel of the indirect heater 10 and is sent into the incinerator system through the induced draft fan to serve as combustion-supporting air. In the device, waste gas is primarily cooled in the first-stage heat exchange chamber and the second-stage heat exchange chamber in turn, part of water vapor in the waste gas is condensed into fog drops, most of dust and fog drops in the waste gas are captured through the first-stage demister 5, and the captured waste water is collected to the bottom collecting hopper of the first-stage heat exchange chamber and the second-stage heat exchange chamber and is discharged; the waste gas from the primary demister enters the tertiary indirect heat exchange chamber 6, and as the cooling medium enters from the tertiary indirect heat exchange chamber 6 and comes out from the primary indirect heat exchange chamber 2 through the design of an internal flow passage, the waste gas is cooled in a grading manner, the waste gas is further cooled by the tertiary indirect heat exchange chamber 6, and the residual vapor in the waste gas is condensed and aggregated with the original fine mist into large mist drops, and then is captured by the secondary demister 8, so that dust-containing waste water is directly discharged to a factory waste water system. Specifically, the treatment process of the exhaust gas and the cooling medium is as follows: the high-humidity dust-containing hot waste gas generated by indirect heat drying of wet sludge and subjected to pre-dedusting is guided by a draught fanThe device is provided with power from an exhaust gas channel inlet 1 of a primary indirect water-cooling heat exchange chamber 2, and then sequentially passes through the primary indirect heat exchange chamber 2, a secondary indirect heat exchange chamber 3, a primary demister 5, a tertiary indirect heat exchange chamber 6, a secondary demister 8 and an indirect heater 10, so that the purposes of dehumidifying, dedusting and heating exhaust gas are achieved; wherein the dust content in the waste gas is lower than 30mg/Nm after the waste gas passes through the primary demister and the secondary demister 3 The content of fog drops is lower than 75mg/Nm 3 The heating of the water entering the indirect heater does not cause the scaling and blockage of the indirect heater 10. The cooling medium enters the device along a cooling medium inlet 15 of the three-stage indirect heat exchange chamber, sequentially passes through the three-stage indirect heat exchange chamber 6, the two-stage indirect heat exchange chamber 3 and the first-stage indirect heat exchange chamber 2, is finally discharged from a cooling medium outlet 16 of the first-stage indirect water-cooling heat exchange chamber 2, and carries out fractional condensation on the moisture in the waste gas; the dust-laden wastewater is discharged along the dust-laden wastewater outlet 12 of the dust-laden wastewater collection hopper 4.
In the utility model, the clear wastewater refers to wastewater which is clear relative to dust-containing wastewater, and because the clear wastewater collection hopper 7 collects wastewater generated after waste gas is cooled by the first-stage indirect heat exchange chamber, the second-stage indirect heat exchange chamber and the third-stage indirect heat exchange chamber, the clear wastewater is clear relative to wastewater (dust-containing wastewater) generated after waste gas is cooled by the first-stage indirect heat exchange chamber and the second-stage indirect heat exchange chamber; the clearer waste water can be reused to avoid waste; as an alternative, in particular, the waste gas channels of the primary indirect heat exchange chamber 2, the secondary indirect heat exchange chamber 3 and/or the tertiary indirect heat exchange chamber 6 are also provided with an indirect heat exchange chamber flushing water interface, and the flushing water interface is connected with the outlet of the clearer waste water collecting bucket 7; fig. 1 shows that the indirect heat exchange chamber flushing water interface 17 is only arranged at the inlet of the waste gas channel of the primary indirect heat exchange chamber 2, the clearer waste water is pumped to the indirect heat exchange chamber flushing water interface 17 along the clearer waste water outlet 13 of the clearer waste water collecting bucket 7 through the water pump 14 to enter the waste gas channel of the first indirect heat exchange chamber, so that flushing of the side heat exchange surface of the waste gas channel is realized, the cleaning of the heat exchange surfaces of all stages of indirect heat exchange chambers is ensured, and the waste water amount of the system is not increased.
In the utility model, the heat source adopted by the indirect heater 10 can be a conventional heat source, and as an alternative scheme, a low-quality heat source (saturated condensed water at the temperature of 100 ℃ and 0.1-0.2 MPa is changed into the sludge in the drier after the sludge is dried by steam) generated by indirect heat drying of wet sludge is adopted; specifically, the low-quality heat source enters the indirect heater 10 along the indirect heater heat source inlet 19, and the waste gas is heated to 5-15 ℃ higher than the dew point temperature by the indirect heater heat source outlet 20; the scheme also simultaneously recycles a low-quality heat source generated by indirect heat drying of wet sludge, and can heat the waste gas to a temperature above a dew point (about 75-90 ℃), and the temperature of the waste gas at the outlet of the indirect heater is controlled to be 5-15 ℃ higher than the dew point temperature. Avoiding wasting heat of the heat source, reducing the consumption of circulating cooling water, and saving energy and economy.
In the utility model, the directions of the waste gas channels of the first-stage indirect heat exchange chamber 2, the second-stage indirect heat exchange chamber 3 and the third-stage indirect heat exchange chamber 6 are all vertical, as shown in figure 1, and the recovery of dust-containing waste water and cleaner waste water is more facilitated by gravity.
The utility model also comprises an air duct expansion joint 9 arranged at the joint of the waste gas channels of the three-stage indirect heat exchange chamber 6 and the indirect heater 10, and the axial deformation of the joint of the waste gas channels of the three-stage indirect heat exchange chamber 6 and the indirect heater 10 is compensated.
In the utility model, a demister flushing water interface 18 is also arranged at the connection part of the waste gas channels of the two-stage indirect heat exchange chamber 3 and the three-stage indirect heat exchange chamber 6 and the connection part of the waste gas channels of the three-stage indirect heat exchange chamber 6 and the indirect heater 10, and as shown in figure 1, the process water enters the flushing demister from the demister flushing water interface 18.
According to the utility model, materials can be selected according to waste gas, wherein the device adopts 304 stainless steel materials for municipal sludge or waste gas generated by drying materials without chemical corrosion, and corresponding materials (2205 bidirectional stainless steel) are selected according to the characteristics of the waste gas of special materials (such as seafood sludge and landfill leachate sludge). 1. The secondary demister adopts PP or selects corresponding materials according to the characteristics of waste gas.
The utility model sequentially dehumidifies, removes dust and heats the waste gas of the indirect heat drying of the wet sludge, and the tail gas induced draft fan does not need to be stopped and washed every half month; the temperature of the tail gas entering the incineration system is higher, so that the heat efficiency of the system is improved, and the phenomenon that the air preheater of the boiler is free from blockage and scaling is avoided; the steam condensate (0.1-0.2 MPa, 100 ℃) of the drier does not need to use circulating cooling water, thereby saving energy consumption. The wet sludge is indirectly dried by a certain disc, the dried sludge is sent to a garbage incinerator for cooperative incineration treatment, and after the device is adopted, a waste gas induced draft fan and an air duct continuously run for one year without shutdown flushing; after the steam condensate of the disc drier is used for heating the waste gas, a circulating water heat exchanger is not additionally arranged for cooling, so that the consumption of circulating cooling water is saved; the hot waste gas is used for boiler combustion-supporting air, and the boiler air preheater has no blocking and scaling phenomenon.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The waste gas treatment device suitable for indirect heat drying of wet sludge is characterized by comprising a primary indirect heat exchange chamber, a secondary indirect heat exchange chamber, a dust-containing waste water collecting bucket, a primary demister, a tertiary indirect heat exchange chamber, a clearer waste water collecting bucket, a secondary demister, an indirect heater and an induced draft fan; the waste gas channels of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber, the tertiary indirect heat exchange chamber and the indirect heater are sequentially connected, and the cooling medium channels of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber and the tertiary indirect heat exchange chamber are sequentially connected; the primary demister is arranged at the joint of the waste gas channels of the two-stage indirect heat exchange chamber and the three-stage indirect heat exchange chamber and is used for demisting waste gas entering the waste gas channels of the three-stage indirect heat exchange chamber; the dust-containing wastewater collection hopper is arranged at the joint of the waste gas channels of the first-stage indirect heat exchange chamber and the second-stage indirect heat exchange chamber and is used for collecting dust-containing wastewater generated after the waste gas is cooled by the first-stage indirect heat exchange chamber and the second-stage indirect heat exchange chamber; the secondary demister is arranged at the joint of the waste gas channel of the indirect heat exchange chamber and the indirect heater and is used for demisting waste gas at the outlet of the waste gas channel of the indirect heat exchange chamber; the clear wastewater collection hopper is arranged at the joint of the waste gas channels of the three-stage indirect heat exchange chamber and the indirect heater and is used for collecting clear wastewater generated after the waste gas is cooled by the three-stage indirect heat exchange chamber; the induced draft fan is connected with an outlet of an exhaust gas channel of the indirect heater.
2. The apparatus of claim 1, wherein the flue gas channel directions of the primary indirect heat exchange chamber, the secondary indirect heat exchange chamber, and the tertiary indirect heat exchange chamber are all vertical directions.
3. The device according to claim 1, characterized in that the flue gas channels of the primary, secondary and/or tertiary indirect heat exchange chamber are further provided with an indirect heat exchange chamber flushing water interface, which flushing water interface is connected with the outlet of the more clear waste water collection bucket.
4. The device according to claim 1, further comprising an air duct expansion joint arranged at the connection of the waste gas channels of the three-stage indirect heat exchange chamber and the indirect heater.
5. The device according to claim 1, wherein the waste gas channel connection of the two-stage indirect heat exchange chamber and the three-stage indirect heat exchange chamber and the waste gas channel connection of the three-stage indirect heat exchange chamber and the indirect heater are further provided with demister flushing water interfaces.
6. The device of claim 1, wherein the device is made of 304 stainless steel.
7. The apparatus of claim 1, wherein the primary mist eliminator and the secondary mist eliminator are made of polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322060942.6U CN220531135U (en) | 2023-08-02 | 2023-08-02 | Waste gas treatment device suitable for indirect heat drying of wet sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322060942.6U CN220531135U (en) | 2023-08-02 | 2023-08-02 | Waste gas treatment device suitable for indirect heat drying of wet sludge |
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| Publication Number | Publication Date |
|---|---|
| CN220531135U true CN220531135U (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322060942.6U Active CN220531135U (en) | 2023-08-02 | 2023-08-02 | Waste gas treatment device suitable for indirect heat drying of wet sludge |
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| Country | Link |
|---|---|
| CN (1) | CN220531135U (en) |
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2023
- 2023-08-02 CN CN202322060942.6U patent/CN220531135U/en active Active
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