CN220012209U - Desulfurization wastewater treatment system of ultra-supercritical parameter variable-pressure operation once-through boiler - Google Patents
Desulfurization wastewater treatment system of ultra-supercritical parameter variable-pressure operation once-through boiler Download PDFInfo
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- CN220012209U CN220012209U CN202320749593.6U CN202320749593U CN220012209U CN 220012209 U CN220012209 U CN 220012209U CN 202320749593 U CN202320749593 U CN 202320749593U CN 220012209 U CN220012209 U CN 220012209U
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 66
- 230000023556 desulfurization Effects 0.000 title claims abstract description 66
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000003546 flue gas Substances 0.000 claims abstract description 79
- 238000001704 evaporation Methods 0.000 claims abstract description 56
- 230000008020 evaporation Effects 0.000 claims abstract description 54
- 239000002351 wastewater Substances 0.000 claims abstract description 49
- 150000003839 salts Chemical class 0.000 claims abstract description 32
- 239000000428 dust Substances 0.000 claims abstract description 31
- 239000007921 spray Substances 0.000 claims abstract description 28
- 238000000889 atomisation Methods 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000002956 ash Substances 0.000 claims abstract description 11
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 6
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 239000012716 precipitator Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 230000008021 deposition Effects 0.000 abstract description 7
- 235000002639 sodium chloride Nutrition 0.000 description 29
- 239000012530 fluid Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 7
- 239000002910 solid waste Substances 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a desulfurization wastewater treatment system of a supercritical parameter variable-pressure operation once-through boiler, which comprises a wastewater conveying system, a first water treatment system, a second water treatment system and a third water treatment system, wherein the wastewater conveying system is suitable for being connected with a triple box for treating and discharging desulfurization wastewater; the atomization system comprises an atomization spray gun and an evaporation tower, wherein the evaporation tower is provided with a hot flue gas inlet, a hot primary air inlet, an atomization liquid inlet and a flue gas outlet; the flue gas system comprises a boiler, an SCR reactor, a primary fan, an air preheater, an electric dust collector, an LGGH, a desulfurizing tower and an ash bucket, wherein the primary fan and the air preheater are sequentially connected with a hot primary air inlet; the salt separated out from the atomized desulfurization wastewater evaporated and dried in the evaporation tower is mixed into fly ash, the fly ash is captured and recovered into an ash bucket through a flue gas outlet by an electric dust collector, and the fly ash is introduced into a desulfurization tower for desulfurization and is discharged after reaching the standard. The zero-emission environment-friendly requirement of no wastewater and crystalline salt emission is realized, salt deposition is avoided, and the treatment efficiency is higher.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment devices, in particular to a desulfurization wastewater treatment system of a supercritical parameter variable-pressure operation once-through boiler.
Background
The desulfurization wastewater has great treatment difficulty due to the characteristics of large water fluctuation, high suspended matters, more heavy metal ions, high salt content and the like.
At present, part of domestic power plants adopt an evaporation crystallization process to treat desulfurization wastewater, and the specific process is that desulfurization wastewater enters a concentration and evaporation crystallization device in sequence after being pretreated by a three-header, the wastewater is discharged in a steam form, and the generated crystallization salt is sold after being dried and packaged, so that the recycling is realized. In salt markets, common salt has the advantages of high quality and low selling price, and because the sources, production processes and processing technologies of industrial salt are not known to the public, the acceptance of buyers for the industrial salt is not high, the actual yield is extremely low, and the crystalline salt which is sold without way can only be treated as solid waste.
It is known that the yield of the crystalline salt of the desulfurization wastewater treatment system of the supercritical parameter variable pressure operation once the desulfurization wastewater treatment system is operated is 1.35t/h, but the crystalline salt is required to be sent to a professional institution for identification once no fluids are available. If the identification is dangerous waste, the identification is required to be submitted to a unit with dangerous waste treatment qualification for treatment; and if the identification is not dangerous waste, the identification is used as common solid waste for landfill or comprehensive utilization. Either way, additional costs are incurred.
Meanwhile, the evaporation crystallization process is adopted, the temperature difference between the evaporated water and steam in the crystallizer heater needs to be strictly controlled, and once the temperature difference is too large, salt is deposited on the wall of the tank body, frequent cleaning is caused, and the desulfurization wastewater treatment efficiency is greatly reduced. Accordingly, the present utility model has been made to solve the above-mentioned problems.
Disclosure of Invention
Aiming at least one of the technical problems, the utility model aims to provide a desulfurization wastewater treatment system of a supercritical parameter variable-pressure operation once-through boiler, which has no discharged wastewater and crystalline salt, accords with the environment protection concept, does not have salt deposition phenomenon, and has high treatment efficiency.
The technical scheme of the utility model is as follows:
the utility model aims to provide a desulfurization wastewater treatment system of a supercritical parameter variable-pressure operation once-through boiler, which comprises the following components:
a waste water conveying system which is suitable for being connected with a triple box for treating and discharging desulfurization waste water and is used for conveying the treated desulfurization waste water;
the atomization system comprises an atomization spray gun connected with the wastewater conveying system and an evaporation tower connected with the atomization spray gun, the atomization spray gun is used for atomizing the desulfurization wastewater conveyed by the wastewater conveying system, the evaporation tower is provided with a hot flue gas inlet, a hot primary air inlet and a flue gas outlet, and the atomized desulfurization wastewater is evaporated and dried by hot flue gas in the evaporation tower;
the flue gas system comprises a boiler and an SCR reactor which are sequentially connected and connected with the hot flue gas inlet, a primary fan and an air preheater which are sequentially connected and connected with the hot primary air inlet, an electric dust collector connected with the flue gas outlet, an LGGH connected with the air preheater and the electric dust collector, a desulfurizing tower and an ash bucket which are respectively connected with the electric dust collector; the air preheater is also connected with the SCR reactor and the boiler respectively;
the salt separated out from the atomized desulfurization wastewater evaporated and dried in the evaporation tower is mixed into fly ash, the fly ash is captured and recovered into the ash bucket through the electric dust collector through the flue gas outlet, and the fly ash is introduced into the desulfurization tower for desulfurization and is discharged after reaching the standard.
Compared with the prior art, the utility model has the advantages that:
according to the desulfurization wastewater treatment system for the ultra-supercritical parameter variable-pressure operation direct-current boiler, precipitated crystal salt is not deposited on the inner wall of the evaporation tower, but is recycled to the ash bucket along with fly ash by the electric dust collector, so that the zero-emission environment-friendly requirement of no wastewater and crystal salt discharge is realized, and salt deposition is not generated, the treatment efficiency is higher, and the problems that solid waste of the crystal salt is generated, and the treatment efficiency is low due to the fact that the solid waste of the crystal salt is not in accordance with the environment-friendly theory and the salt deposition in the desulfurization wastewater treatment system for the ultra-supercritical parameter variable-pressure operation direct-current boiler in the prior art are solved.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic diagram of a desulfurization wastewater treatment system of a supercritical parameter pressure swing operation once-through boiler according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the structure of an evaporation tower in the desulfurization wastewater treatment system of the ultra-supercritical parameter pressure swing operation once-through boiler of FIG. 1.
Wherein: 10. a wastewater delivery system; 11. a spray water tank; 20. an atomizing system; 21. an atomizing spray gun; 22. an evaporation tower; 221. a hot flue gas inlet; 222. an atomized liquid inlet; 223. a hot primary air inlet; 224. a flue gas outlet; 30. a flue gas system; 31. a boiler; 32. an SCR reactor; 33. an air preheater; 34. a primary air blower; 35. LGGH; 36. electric dust remover; 37. an induced draft fan; 38. a desulfurizing tower; 39. an ash bucket; 310. a chimney; 311. a first pipe; 312. a second pipe; 40. a three-way box.
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
Referring to fig. 1 to 2, a desulfurization wastewater treatment system of a supercritical parameter variable-pressure operation once-through boiler in an embodiment of the present utility model includes three parts, namely a wastewater conveying system 10, an atomization system 20 and a flue gas system 30. Wherein the wastewater conveying system 10 is connected with the triple box 40, and the desulfurization wastewater is conveyed by the wastewater conveying system 10 after being treated by the triple box 40. It should be noted that, the triple box 40 is a conventional triple box 40, and the specific structure and working principle are not described and limited, and are easily known and implemented by those skilled in the art. The atomization system 20 is connected with the wastewater conveying system 10, and is used for atomizing desulfurization wastewater treated by the triple box 40 to form atomized liquid drops. Specifically, the atomizing system 20 includes an atomizing spray gun 21 and an evaporating tower 22 connected in sequence, and the atomizing spray gun 21 is a conventional two-fluid atomizing spray gun 21 (in which one fluid of the two fluids is the desulfurization wastewater, and the other fluid is compressed air), and the specific structure and the working principle are not described, so that those skilled in the art will easily know and realize the same. The desulfurization waste water is contacted with compressed air to form broken fine liquid drops, and the broken fine liquid drops are sprayed out by the double-fluid atomization spray gun 21. The evaporation tower 22 is connected with the double-fluid atomization spray gun 21, and specifically, an atomization liquid inlet 222, a hot flue gas inlet 221, a hot primary air inlet 223 and a flue gas outlet 224 are formed on the evaporation tower 22. The two-fluid atomizing spray gun 21 is connected with an atomized liquid inlet 222 (specifically, through a pipeline connection), atomized desulfurization wastewater enters the evaporation tower 22 through the atomized liquid inlet 222 and is evaporated and dried in the evaporation tower 22 by hot flue gas entering through a hot flue gas inlet 221, water is evaporated, and salt separated out from the desulfurization wastewater is discharged from a flue gas outlet 224 under the action of gravity along with fly ash. The flue gas system 30 comprises a boiler 31 and an SCR reactor 32 which are sequentially connected, a primary air blower 34 and an air preheater 33 which are sequentially connected, an electric dust collector 36 connected with a flue gas outlet 224, an LGGH35 connected with the air preheater 33 and the electric dust collector 36, a desulfurizing tower 38 and an ash bucket 39 respectively connected with the electric dust collector 36, and the air preheater 33 is also respectively connected with the SCR reactor 32 and the boiler 31. Specifically, the boiler 31 and the SCR reactor 32 are sequentially connected to be connected to the hot flue gas inlet 221 of the evaporation tower 22, and the boiler 31 is used for supplying hot flue gas to the evaporation tower 22. The primary air blower 34 is connected with the air preheater 33 (air preheater) in sequence and then is connected with the hot primary air inlet 223, the primary air blower 34 is used for providing hot primary air into the evaporation tower 22, the air preheater 33, the LGGH35 (low-temperature flue gas heat exchanger, specific structure and working principle are not described and limited, and the conventional structure), the electric dust collector 36 and the desulfurizing tower 38 are connected in sequence, and the flue gas outlet 224 is connected with the electric dust collector 36. The air preheater 33 is also connected to the SCR reactor 32 and the boiler 31. That is, a part of hot flue gas generated by the boiler 31 enters the evaporation tower 22 through the hot flue gas inlet 221 after passing through the SCR reactor 32 for evaporation and drying of the atomized desulfurization waste water, and the other part enters the air preheater 33 for recycling to the boiler 31 and for heat exchange through the LGGH35, i.e. the low-temperature flue gas heat exchanger, so as to reduce the temperature and flue gas flow rate of the fly ash with precipitated salt discharged from the flue gas outlet 224, improve the specific surface area and dust collection effect of the subsequent electric dust collector 36. The air from the primary air blower 34 is preheated by the air preheater 33 and is used as a source of hot primary air, and enters the evaporation tower 22 through the hot primary air inlet 223, so as to ensure the evaporation temperature condition in the evaporation tower 22, avoid water condensation on the inner wall of the evaporation tower 22 caused by overlarge temperature difference, and simultaneously be beneficial to blowing the salt separated out after evaporation downwards together with the fly ash to the flue gas outlet 224. In the embodiment of the utility model, the boiler 31 is a conventional direct-current boiler 31 operated by supercritical parameter pressure transformation, hot flue gas generated by the boiler 31 is used for evaporating, drying and atomizing desulfurization waste water, the atomized desulfurization waste water is evaporated and dried in the evaporation tower 22 by the hot flue gas provided by the boiler 31, the temperature in the evaporation tower can ensure that the evaporated moisture is not condensed on the wall of the evaporation tower 22 and cannot cause deposition of salt on the inner wall of the evaporation tower 22 by the action of hot primary air, the salt separated out after the desulfurization waste water is atomized and evaporated can be discharged from the flue gas outlet 224 under the action of gravity along with fly ash and captured by the electric dust collector 36 and then recycled into the ash bucket 39, and the fly ash is discharged after the desulfurization treatment of the desulfurization tower 38 reaches the discharge standard. That is, in the desulfurization wastewater treatment system adopting the supercritical parameter variable-pressure operation once-through boiler of the embodiment of the utility model, precipitated crystal salt is not deposited on the inner wall of the evaporation tower 22, but enters the fly ash along with the recovery of the fly ash into the ash bucket 39 by the electric dust collector 36, so that the zero emission environment-friendly requirement of no wastewater and crystal salt emission is realized, and the salt deposition is not generated, thereby the treatment efficiency is higher, and the problems that the solid waste of the crystal salt is generated, the solid waste does not accord with the environment-friendly concept and the treatment efficiency is low due to the salt deposition in the desulfurization wastewater treatment system adopting the supercritical parameter variable-pressure operation once-through boiler in the prior art are solved.
According to some preferred embodiments of the present utility model, a flue gas distributor (not shown) is provided at the hot flue gas inlet 221. It should be noted that, the smoke distributor according to the embodiment of the present utility model is a conventional smoke distributor in the existing market, and the specific structure and working principle are not described and limited. The purpose of the flue gas distributor is to fully mix the atomized liquid and the dry gas, so that the water can be effectively prevented from condensing on the wall of the evaporation tower 22, the long-time stable operation of the atomization system 20 is facilitated, and the temperature of the flue gas outlet 224 can be ensured to be close to the required temperature.
According to some preferred embodiments of the present utility model, an anti-dust device (not shown) is provided at the hot primary air inlet 223. It should be noted that, the dust accumulation preventing device in the embodiment of the utility model is a conventional flue gas distributor in the existing market, and the specific structure and the working principle are not described and limited. The dust accumulation prevention device can effectively prevent dust accumulation on the barrel wall of the evaporation tower 22, so that the evaporation efficiency can be improved.
According to some preferred embodiments of the present utility model, as shown in fig. 1, the hot flue gas inlet 221 is connected to the SCR reactor 32 through a first pipe 311 between the front end of the air preheater 33 and the outlet flue of the SCR reactor 32. The flue gas outlet 224 is connected to the electric precipitator 36 by a second duct 312 connected to a dust removing duct connected to the electric precipitator 36 at the rear end of the LGGH 35.
According to some preferred embodiments of the present utility model, the first pipe 311 is further provided with a smoke volume adjusting device (not shown) and an online smoke flowmeter (not shown). It should be noted that, the flue gas amount adjusting device in the embodiment of the utility model is an existing conventional automatic adjusting baffle, the online flue gas flowmeter is also an existing market conventional flue gas flowmeter, and the specific structure and the working principle are not described and limited herein. The automatic regulating baffle and the online flue gas flowmeter are connected with the controller of the evaporation tower 22, and the flow of the hot flue gas in the first pipeline 311 can be regulated through the flue gas flow regulating device according to the real-time load of the evaporation tower 22 and the flue gas flow measured by the online flue gas flowmeter, so that the operation safety of a unit is ensured, and the automation and efficient operation of the evaporation tower 22 are ensured. Further preferably, on-line temperature sensors (not shown) are disposed at the hot flue gas inlet 221 and the flue gas outlet 224, and the on-line temperature sensors are electrically connected with the controller of the evaporation tower 22 for respectively detecting the temperature of the hot flue gas inlet 221 and the temperature of the flue gas outlet 224, so that the electric adjustment of the baffle plate is convenient for adjusting the flue gas amount to make the working condition in the evaporation tower 22 be in a stable state all the time.
According to some preferred embodiments of the present utility model, as shown in fig. 2, the hot flue gas inlet 221 is disposed at the top of the evaporation tower 22, the atomized liquid inlet 222 and the hot primary air inlet 223 are disposed on the top side wall of the evaporation tower 22, the atomized liquid inlet 222 is disposed at a position higher than the hot primary air inlet 223, and the axes of the atomized liquid inlet 222 and the hot primary air inlet 223 are disposed in an intersecting manner in the same plane. The flue gas outlet 224 is provided in the bottom side wall of the evaporation tower 22. That is, the atomized liquid inlet 222 is located between the hot flue gas inlet 221 and the hot primary air inlet 223, so that the atomized liquid can be well evaporated and dried by the hot flue gas, and moisture cannot be accumulated on the inner wall of the evaporation tower 22.
According to some preferred embodiments of the present utility model, a mesh self-cleaning filter (not shown) is also included between the tri-header 40 and the wastewater delivery system 10. The mesh type self-cleaning filter in the embodiment of the utility model is a conventional mesh type self-cleaning filter in the existing market, and the specific structure and the working principle are not described and limited. The net type self-cleaning filter is used for removing suspended matters and other impurities in the desulfurization wastewater so as to facilitate subsequent atomization.
According to some preferred embodiments of the present utility model, as shown in fig. 1, the wastewater delivery system 10 includes a spray water tank 11 and a spray water pump (not shown) connected in series. The spray water tank 11 and the spray water pump are conventional spray water tank 11 and spray water pump in the existing market, and the specific structure and working principle are not described and limited, so that those skilled in the art can easily know and realize the spray water tank 11 and the spray water pump. The desulfurization wastewater is primarily atomized through the spray water tank 11 and the spray water pump, and then is further atomized into fine mist droplets with the average diameter of 40-60 mu m through the double-fluid spray water gun, so that the fine mist droplets are conveniently evaporated in the evaporation tower 22, the evaporation efficiency is improved, and the problem of condensation in the evaporation tower 22 caused by larger water particle size can be effectively avoided.
According to some preferred embodiments of the present utility model, as shown in FIG. 1, the flue gas system 30 further includes an induced draft fan 37 disposed between the electric precipitator 36 and the desulfurization tower 38, and a stack 310 disposed after the desulfurization tower 38. The fly ash is conveniently separated from the electric dust collector 36 by an induced draft fan 37. The fly ash reaching the discharge standard after the desulfurization tower 38 is treated through the chimney 310 is discharged, the chimney 310 has a certain height, the specific height is not limited, the fly ash is discharged to the high altitude, and the influence of low altitude discharge on the normal life and the respiratory environment of a human body can be avoided.
In fig. 1, the connection between the components is made by pipes, and the arrows indicate the medium flow direction.
It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (10)
1. A desulfurization wastewater treatment system for a supercritical parameter variable pressure operation once-through boiler, comprising:
a waste water conveying system which is suitable for being connected with a triple box for treating and discharging desulfurization waste water and is used for conveying the treated desulfurization waste water;
the atomization system comprises an atomization spray gun connected with the wastewater conveying system and an evaporation tower connected with the atomization spray gun, the atomization spray gun is used for atomizing the desulfurization wastewater conveyed by the wastewater conveying system, the evaporation tower is provided with a hot flue gas inlet, a hot primary air inlet, an atomization liquid inlet and a flue gas outlet, and the atomized desulfurization wastewater is evaporated and dried in the evaporation tower through the atomization liquid inlet by hot flue gas entering from the hot flue gas inlet;
the flue gas system comprises a boiler and an SCR reactor which are sequentially connected and connected with the hot flue gas inlet, a primary fan and an air preheater which are sequentially connected and connected with the hot primary air inlet, an electric dust collector connected with the flue gas outlet, an LGGH connected with the air preheater and the electric dust collector, a desulfurizing tower and an ash bucket which are respectively connected with the electric dust collector; the air preheater is also connected with the SCR reactor and the boiler respectively;
the salt separated out from the atomized desulfurization wastewater evaporated and dried in the evaporation tower is mixed into fly ash, the fly ash is captured and recovered into the ash bucket through the electric dust collector through the flue gas outlet, and the fly ash is introduced into the desulfurization tower for desulfurization and is discharged after reaching the standard.
2. The desulfurization wastewater treatment system of a supercritical parameter variable pressure operation once-through boiler according to claim 1, wherein a flue gas distributor is arranged at the hot flue gas inlet.
3. The desulfurization wastewater treatment system of the ultra-supercritical parameter variable-pressure operation once-through boiler according to claim 2, wherein the hot primary air inlet is provided with a dust accumulation prevention device.
4. A desulfurization wastewater treatment system of a supercritical parameter variable pressure operation once-through boiler according to any one of claims 1-3, wherein said hot flue gas inlet is connected to said SCR reactor through a first conduit between said air preheater front end and the outlet flue of the SCR reactor;
the flue gas outlet is connected with the electric dust collector through a second pipeline connected with the dust collection pipeline connected with the electric dust collector at the rear end of the LGGH.
5. The desulfurization wastewater treatment system of the ultra-supercritical parameter variable pressure operation once-through boiler according to claim 4, wherein the first pipeline is further provided with a flue gas amount adjusting device and an online flue gas flowmeter.
6. The desulfurization wastewater treatment system of the ultra-supercritical parameter variable pressure operation once-through boiler according to claim 5, wherein an on-line temperature sensor is arranged at each of the hot flue gas inlet and the flue gas outlet.
7. A desulfurization wastewater treatment system of a supercritical parameter variable-pressure operation once-through boiler according to any one of claims 1-3, wherein the hot flue gas inlet is arranged at the top of the evaporation tower, the atomized liquid inlet and the hot primary air inlet are arranged on the top side wall of the evaporation tower, the atomized liquid inlet is arranged at a position higher than the hot primary air inlet, and the axes of the atomized liquid inlet and the hot primary air inlet are in intersecting distribution in the same plane;
the flue gas outlet is arranged on the side wall of the bottom end of the evaporation tower.
8. A desulfurization wastewater treatment system for a supercritical parameter pressure swing run once-through boiler according to any of claims 1-3, further comprising a mesh self-cleaning filter disposed between said tri-header and said wastewater delivery system.
9. The desulfurization wastewater treatment system of a supercritical parameter pressure swing run once-through boiler according to claim 8, wherein the wastewater delivery system comprises a spray tank and a spray pump connected in sequence.
10. A desulfurization wastewater treatment system for a supercritical parameter pressure swing run once-through boiler according to any one of claims 1-3, wherein said flue gas system further comprises an induced draft fan disposed between said electric precipitator and said desulfurization tower, and a stack disposed after said desulfurization tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320749593.6U CN220012209U (en) | 2023-04-07 | 2023-04-07 | Desulfurization wastewater treatment system of ultra-supercritical parameter variable-pressure operation once-through boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320749593.6U CN220012209U (en) | 2023-04-07 | 2023-04-07 | Desulfurization wastewater treatment system of ultra-supercritical parameter variable-pressure operation once-through boiler |
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| Publication Number | Publication Date |
|---|---|
| CN220012209U true CN220012209U (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320749593.6U Active CN220012209U (en) | 2023-04-07 | 2023-04-07 | Desulfurization wastewater treatment system of ultra-supercritical parameter variable-pressure operation once-through boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN220012209U (en) |
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2023
- 2023-04-07 CN CN202320749593.6U patent/CN220012209U/en active Active
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