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CN207079022U - A kind of vaporising device applied to desulfurization wastewater - Google Patents

A kind of vaporising device applied to desulfurization wastewater Download PDF

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Publication number
CN207079022U
CN207079022U CN201720883605.9U CN201720883605U CN207079022U CN 207079022 U CN207079022 U CN 207079022U CN 201720883605 U CN201720883605 U CN 201720883605U CN 207079022 U CN207079022 U CN 207079022U
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CN
China
Prior art keywords
evaporating column
desulfurization wastewater
flue gas
device applied
vaporising device
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201720883605.9U
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Chinese (zh)
Inventor
耿宣
汪洋
王云
李苇林
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China Huadian Engineering Group Co Ltd
Huadian Environmental Protection Engineering and Technology Co Ltd
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China Huadian Engineering Group Co Ltd
Huadian Environmental Protection Engineering and Technology Co Ltd
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Application filed by China Huadian Engineering Group Co Ltd, Huadian Environmental Protection Engineering and Technology Co Ltd filed Critical China Huadian Engineering Group Co Ltd
Priority to CN201720883605.9U priority Critical patent/CN207079022U/en
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Publication of CN207079022U publication Critical patent/CN207079022U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of vaporising device applied to desulfurization wastewater, including air preheater, evaporating column, crystal salt retracting device and electric cleaner, air preheater is connected by fume pipe with evaporating column, evaporating column is connected with crystal salt retracting device, crystal salt retracting device is connected with electric cleaner, controllable register is provided with evaporating column, subregion dividing plate and swirl vane, controllable register is arranged at the flue entrance of evaporating column, subregion dividing plate is arranged between flue entrance and swirl vane, atomising device is provided with evaporating column, swirl vane be arranged at the top of atomising device.By a kind of vaporising device applied to desulfurization wastewater of the utility model, the evaporation drying of high quality can be carried out to caused waste water in coal-burning power plant's process of wet desulphurization, improve the depuration quality of desulfurization wastewater.

Description

A kind of vaporising device applied to desulfurization wastewater
Technical field
A kind of vaporising device applied to desulfurization wastewater is the utility model is related to, belongs to coal-fired station's desulfurization technology Field.
Background technology
Wet desulfurization of flue gas by limestone-gypsum method technique is state, the flue gas desulfurization technique of inside and outside main flow the most, and the technology belongs to Gas-liquid-solid reaction process, includes SO2With lime stone dissolving mass transport process in a liquid and dissolved matter in liquid phase In course of reaction.Desulfurization slurry sprays into desulfurizing tower from top to bottom by tower top spraying layer by liquid-phase nozzle, and flue gas is by absorption tower Bottom section is constantly circulated by absorption region, desulfurization with water in absorption tower from bottom to top, completes SO in flue gas2Absorption Journey.But due to the continuous circulation of desulfurization water, the continuous concentration of soluble salt is caused, this can produce fractions complexity, turbidity Desulfurization wastewater high, salinity is high, it has the characteristics that very strong corrosivity and easy fouling.And desulfurization wastewater is treated as restricting The key factor of waste Water Zero Discharge for Power Plant.
Processing desulfurization wastewater includes mainly dividing the evaporation process containing soluble-salt and insoluble granule solution, evaporation process For two stages:Constant speed is evaporated and reduction of speed evaporation.Constant speed evaporation is to contain substantial amounts of insoluble granule in drop, with entering for evaporation OK, drop gradually tapers up, and intergranular distance reduces, until particle surface contacts, now droplet surface forms crust, water Path limited, remaining moisture be difficult evaporation;Reduction of speed evaporation is that residual moisture reaches droplet surface by diffusion, most Whole moisture is influenceed by parameters such as the temperature of diffusion velocity, vapour pressure, particle and gas.The wherein time of reduction of speed evaporation Evaporate much larger than constant speed, therefore then may be used in the design process of evaporating column if two kinds of evaporation subregions can be controlled To effectively improve evaporation efficiency, equipment size is reduced, improves evaporative mass.
Utility model content
The purpose of this utility model is, there is provided a kind of vaporising device applied to desulfurization wastewater, it is used to dry fire coal Caused waste water in power plant's process of wet desulphurization, by the way of subregion evaporates desulfurization wastewater, its evaporation efficiency is high, quality is high; The expenditure of construction of the utility model device is low, floor space is small, and operation and maintenance cost is low.Current drying equipment often only considers Some stage in two stages of dry evaporation.For example, when only considering constant speed evaporation stage, equipment volume is smaller, accounts for Ground and expenditure of construction are low, but evaporation effect is poor, are extremely difficult to evaporating completely;When in view of reduction of speed evaporation stage, equipment body Product is very big, takes up an area and expenditure of construction is very high.
In order to solve the above technical problems, the utility model adopts the following technical scheme that:It is a kind of applied to desulfurization wastewater Vaporising device, including air preheater, evaporating column, crystal salt retracting device and electric cleaner, air preheater pass through fume pipe It is connected with evaporating column, evaporating column is connected with crystal salt retracting device, and crystal salt retracting device is connected with electric cleaner, in evaporating column Controllable register, subregion dividing plate, swirl vane and flue gas even distribution plate are provided with, controllable register is arranged at the flue entrance of evaporating column Place, subregion dividing plate is arranged between flue entrance and swirl vane, and atomising device is provided with evaporating column, swirl vane set In the top of atomising device.Subregion dividing plate is used to the flue gas entered in evaporating column being separated into two parts, so as in drying tower Form flue gas PARALLEL FLOW area and cigarette cyclonic flow region.Flue gas PARALLEL FLOW area be by flue gas even distribution plate shape into, flue gas passes through During flue gas even distribution plate, by the current balance function of aperture on flue gas even distribution plate, air current flow direction, speed are substantially the same, so as to Form flue gas PARALLEL FLOW area;Cigarette cyclonic flow region passes through by controllable register so that the flowing deviation flue gas point of part of smoke The flow channel on the outside of plate is separated, the partial fume is formed with drying tower in flow process by flue gas swirl vane, flue gas Center line flows for the central rotation of axle.Atomising device is located at flue gas PARALLEL FLOW area, can cause the spray droplet direction of motion It is basically identical, avoid droplets from collision and grow up, complete drop constant speed evaporation stage;Drop enters cigarette cyclonic flow region, can be with flue gas Rotary motion, drop can obtain the longer residence time in limited space, so as to not increase the feelings of evaporating column diameter Under condition, reduction of speed evaporation stage is completed, obtains more preferable drying effect.Wherein on flue gas even distribution plate the percent opening of aperture be 30%~ 50%.
The utility model by constant speed evaporation stage and reduction of speed evaporation stage subregion, monitor regulation respectively by way of merge In single drying tower, there is the characteristics of equipment volume is small, drying process is complete, monitoring regulative mode is flexible.
In a kind of foregoing vaporising device applied to desulfurization wastewater, one end of the fume pipe and entering for air preheater The entrance of the connection of mouth end, the other end and evaporating column connects.
In a kind of foregoing vaporising device applied to desulfurization wastewater, one end of the fume pipe and going out for air preheater The entrance of the connection of mouth end, the other end and evaporating column connects.High-temperature flue gas is drawn to evaporation using from the arrival end of air preheater The mode of tower, or be about 300 by temperature by the way of high-temperature flue gas to evaporating column is drawn from the port of export of air preheater Degree Celsius high-temperature flue gas be introduced into evaporating column.Using it is this draw high-temperature flue gas to evaporating column by the way of, can installation evaporating column When, the installation site of evaporating column is arranged according to the real space position in power plant.
In a kind of foregoing vaporising device applied to desulfurization wastewater, nozzle one end of the atomising device is arranged at evaporation In flue gas PARALLEL FLOW area in tower, atomising device is connected to desulfurization wastewater system.
In a kind of foregoing vaporising device applied to desulfurization wastewater, the desulfurization wastewater system includes wastewater disposal basin, pre- place Reason device and water pump, wastewater disposal basin are connected with pretreatment unit, and pretreatment unit is connected with water pump, the entrance of water pump and atomising device End connection.
In a kind of foregoing vaporising device applied to desulfurization wastewater, the lower section in the flue gas PARALLEL FLOW area is provided with flue gas Eddy flow area, flue gas PARALLEL FLOW area in the region of cigarette cyclonic flow region with being respectively provided with least one temperature detector.Temperature is examined Device is surveyed to may be mounted on the evaporation inner wall of tower in described flue gas PARALLEL FLOW area and/or flue gas eddy flow region.Flue gas revolves Area is flowed, by controllable register so that the flow channel on the outside of the flowing deviation subregion dividing plate of part of smoke, the partial fume exist Will be using drying tower center line as rotary shaft, around its rotational flow, so as to form cigarette by swirl vane, flue gas in flow process Cyclonic flow region.
Flue gas PARALLEL FLOW area be by flue gas even distribution plate shape into.It is equal by flue gas when flue gas is by flue gas even distribution plate The current balance function of aperture on fabric swatch so that the flow direction of flue gas stream, speed are substantially the same, so as to form Uniform Flow area Domain.
In a kind of foregoing vaporising device applied to desulfurization wastewater, inner chamber and exocoel are provided with the evaporating column, outside Chamber is located between the inwall and subregion dividing plate of evaporating column, and inner chamber is formed by subregion dividing plate.
Inner chamber includes upper accent and lower accent, and the upper accent size of inner chamber is more than the size of lower accent.It is partitioned dividing plate point It is divided into the flue gas of two, the inner chamber that a part of flue gas is formed by subregion dividing plate flows into flue gas PARALLEL FLOW area, a part of then lead to The undue plate that separates is with evaporating the exocoel inflow flue gas PARALLEL FLOW area that inner wall of tower is formed.
In a kind of foregoing vaporising device applied to desulfurization wastewater, the subregion dividing plate includes upper divider plate portions and lower point Partition board portion, the upper divider plate portions are located at the top of lower divider plate portions and are connected with lower divider plate portions, and upper divider plate portions are arranged at In the flue entrance of evaporating column, lower divider plate portions are set in the cavity of evaporating column.The high-temperature flue gas entered from flue entrance, is set The upper divider plate portions in flue entrance position are put to separate.
In a kind of foregoing vaporising device applied to desulfurization wastewater, in addition to damper actuator, described baffle controls Device is connected with controllable register, and damper actuator is connected with electric control system, and electric control system is connected with temperature detector.
When temperature detector detects that temperature of the cigarette cyclonic flow region at evaporating column internal face is below or above setting value, Electric control system will be then delivered a signal to, electric control system then transmits control signal to damper actuator, according to control Signal, damper actuator control to adjust the aperture that gas proportioning damper is decreased or increased in baffle plate.Similarly, when temperature detector detects When measured temperature to flue gas PARALLEL FLOW area is below or above setting value, temperature detector will deliver a signal to electrical control System, electric control system then transmit control signal to damper actuator, damper actuator then according to control signal increase or Person reduces the aperture of gas proportioning damper.
Compared with prior art, a kind of vaporising device applied to desulfurization wastewater of the present utility model, by evaporating column Interior setting controllable register, subregion dividing plate and swirl vane so that divide two parts to flow into flue gas successively into the flue gas in evaporating column PARALLEL FLOW area and cigarette cyclonic flow region, and then by way of subregion evaporates desulfurization wastewater, can be to coal-burning power plant's wet desulphurization Caused waste water carries out the evaporation drying of high quality in journey, improves the depuration quality of desulfurization wastewater.The utility model expenditure of construction It is low, floor space is small, operation and maintenance cost is low.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present utility model;
Fig. 2 is the structural representation of evaporating column of the present utility model;
Fig. 3 is the structural representation of the utility model flue gas even distribution plate;
Fig. 4 is the utility model device connection diagram.
Reference:1- air preheaters, 2- evaporating columns, 3- crystal salt retracting devices, 4- electric cleaners, 5- fume pipes, 6- atomising devices, 7- controllable registers, 8- subregion dividing plates, 9- swirl vanes, 10- flue entrances, 11- desulfurization wastewater systems, 12- give up Pond, 13- pretreatment units, 14- water pumps, 15- temperature detectors, 16- inner chambers, 17- exocoels, 18- electric control systems, 19- Upper divider plate portions, divider plate portions under 20-, 21- flue gas PARALLEL FLOWs area, 22- cigarettes cyclonic flow region, 23- damper actuators, 24- cigarettes Gas uniform board.
The utility model is further described with reference to the accompanying drawings and detailed description.
Embodiment
Embodiment 1 of the present utility model:A kind of vaporising device applied to desulfurization wastewater, including air preheater 1, evaporation Tower 2, crystal salt retracting device 3 and electric cleaner 4, air preheater 1 are connected by fume pipe 5 with evaporating column 2, evaporating column 2 with Crystal salt retracting device 3 is connected, and crystal salt retracting device 3 is connected with electric cleaner 4, be provided with evaporating column 2 controllable register 7, Subregion dividing plate 8, swirl vane 9 and flue gas even distribution plate 24, are provided with aperture on flue gas even distribution plate 24, small on flue gas even distribution plate 24 Percent opening is 40%.Controllable register 7 is arranged at the flue entrance 10 of evaporating column 2, subregion dividing plate 8 be arranged at flue entrance 10 with Between swirl vane 9, it is provided with evaporating column 2 on atomising device 6, swirl vane 9 is arranged at the top of atomising device 6.Evaporation Tower 2 is made of corrosion-resistant stainless steel material, and the inwall of evaporating column 2 uses carbon steel inside lining anti-corrosive coating, can prevent that corrosivity is very strong Corrosion of the desulfurization wastewater to the tower body of evaporating column 2.One end of fume pipe 5 is connected with the arrival end of air preheater 1, the other end with The entrance connection of evaporating column 2.
Embodiment 2 of the present utility model:A kind of vaporising device applied to desulfurization wastewater, including air preheater 1, evaporation Tower 2, crystal salt retracting device 3 and electric cleaner 4, air preheater 1 are connected by fume pipe 5 with evaporating column 2, evaporating column 2 with Crystal salt retracting device 3 is connected, and crystal salt retracting device 3 is connected with electric cleaner 4, be provided with evaporating column 2 controllable register 7, Subregion dividing plate 8, swirl vane 9 and flue gas even distribution plate 24, are provided with aperture on flue gas even distribution plate 24, small on flue gas even distribution plate 24 Percent opening is 30%.Controllable register 7 is arranged at the flue entrance 10 of evaporating column 2, subregion dividing plate 8 be arranged at flue entrance 10 with Between swirl vane 9, it is provided with evaporating column 2 on atomising device 6, swirl vane 9 is arranged at the top of atomising device 6.Flue gas One end of pipe 5 is connected with the port of export of air preheater 1, and the other end is connected with the entrance of evaporating column 2.
Further, nozzle one end of atomising device 6 is arranged in the flue gas PARALLEL FLOW area 21 in evaporating column 2, atomization Device 6 is connected to desulfurization wastewater system 11.Flue gas PARALLEL FLOW area 21 is located at the central area in evaporating column 2, and desulfurization wastewater leads to The nozzle for crossing atomising device 6 sprays into flue gas PARALLEL FLOW area 21 in droplets, the flue gas stream in flue gas PARALLEL FLOW area 21 Dynamic direction is essentially identical, it is ensured that sprays into the atomizing effect of drop, avoids droplets from collision and grow up.
Further, desulfurization wastewater system 11 includes wastewater disposal basin 12, pretreatment unit 13 and water pump 14, wastewater disposal basin 12 with it is pre- Processing unit 13 is connected, and pretreatment unit 13 is connected with water pump 14, and water pump 14 is connected with the arrival end of atomising device 6.It is described de- Connecting line in sulphur waste water system 11 between each equipment uses corrosion-resistant stainless steel or fluoroplastics material, to prevent anti-avulsion sulphur Corrosion of the waste water to pipeline.
Further, the lower section in flue gas PARALLEL FLOW area 21 is provided with cigarette cyclonic flow region 22, flue gas PARALLEL FLOW area 21 and cigarette At least one temperature detector 15 is respectively provided with the region of cyclonic flow region 22.
Specifically, be provided with inner chamber 16 and exocoel 17 in evaporating column 2, exocoel 17 be located at the inwall of evaporating column 2 and subregion every Between plate 8, inner chamber 16 is formed by subregion dividing plate 8.
Specifically, subregion dividing plate 8 includes upper divider plate portions 19 and lower divider plate portions 20, upper divider plate portions 19 are located at lower separation The top of plate portion 20 is simultaneously connected with lower divider plate portions 20, and upper divider plate portions 19 are arranged in the flue entrance 10 of evaporating column 2, lower point Partition board portion 20 is set in the cavity of evaporating column 2.
Further, in addition to damper actuator 23, damper actuator 23 are connected with controllable register 7, damper actuator 23 It is connected with electric control system 18, electric control system 18 is connected with temperature detector 15.
A kind of operation principle of embodiment of the utility model:
High-temperature flue gas is led to the flue entrance 10 of evaporating column 2 by the arrival end or the port of export of air preheater 1, At flue entrance 10, the high-temperature flue gas being introduced into by subregion dividing plate 8 separates, make a high-temperature flue gas through evaporate 2 inner wall of tower with The exocoel 17 that subregion dividing plate 8 is formed is flowed into flue gas PARALLEL FLOW area 21, then sectorized dividing plate 8 itself formation of a high-temperature flue gas Inner chamber 16 flow into flue gas PARALLEL FLOW area 21.By atomising device 6 by preprocessed device 13 treat desulfurization wastewater with The form of drop sprays into the flue gas PARALLEL FLOW area 21 of evaporating column 2, and drop is by introduced height in flue gas PARALLEL FLOW area 21 The heating of warm flue gas, is up to or the evaporating temperature close to drop, the drop for reaching evaporating temperature enter flue gas eddy flow therewith Area 22, drop continues to absorb substantial amounts of flue gas heat in cigarette cyclonic flow region 22, so as to complete by the transformation of liquid phase to gas phase. The high-temperature flue gas and drop that flue gas PARALLEL FLOW area 21 crosses, cigarette cyclonic flow region 22, high temperature are flowed into high-temperature flue gas Flue gas moves in a circle in cigarette cyclonic flow region 22 along tower wall, so as in the limited space of evaporating column 2, increase flue gas And the residence time of drop, and then the volume of evaporating column 2 can be reduced, easily facilitate flexible arrangement of the evaporating column 2 in power plant.

Claims (9)

1. a kind of vaporising device applied to desulfurization wastewater, it is characterised in that including air preheater (1), evaporating column (2), knot Brilliant salt retracting device (3) and electric cleaner (4), the air preheater (1) are connected by fume pipe (5) with evaporating column (2), are steamed Hair tower (2) is connected with crystal salt retracting device (3), and crystal salt retracting device (3) is connected with electric cleaner (4), the evaporating column (2) controllable register (7), subregion dividing plate (8), swirl vane (9) and flue gas even distribution plate (24), the controllable register are provided with (7) flue entrance (10) place of evaporating column (2) is arranged at, the subregion dividing plate (8) is arranged at flue entrance (10) and eddy flow leaf Between piece (9), atomising device (6) is provided with the evaporating column (2), described swirl vane (9) is arranged at atomising device (6) Top.
A kind of 2. vaporising device applied to desulfurization wastewater according to claim 1, it is characterised in that the fume pipe (5) one end is connected with the arrival end of air preheater (1), and the other end is connected with the entrance of evaporating column (2).
A kind of 3. vaporising device applied to desulfurization wastewater according to claim 1, it is characterised in that the fume pipe (5) one end is connected with the port of export of air preheater (1), and the other end is connected with the entrance of evaporating column (2).
A kind of 4. vaporising device applied to desulfurization wastewater according to claim 1, it is characterised in that the atomising device (6) nozzle one end is arranged in the flue gas PARALLEL FLOW area (21) in evaporating column (2), and the atomising device (6) is connected to de- Sulphur waste water system (11).
A kind of 5. vaporising device applied to desulfurization wastewater according to claim 4, it is characterised in that the desulfurization wastewater System (11) includes wastewater disposal basin (12), pretreatment unit (13) and water pump (14), the wastewater disposal basin (12) and pretreatment unit (13) connect, pretreatment unit (13) is connected with water pump (14), and the water pump (14) is connected with the arrival end of atomising device (6).
6. a kind of vaporising device applied to desulfurization wastewater according to claim 4, it is characterised in that the flue gas is parallel The lower section of flow region (21) is provided with cigarette cyclonic flow region (22), the flue gas PARALLEL FLOW area (21) and the area of cigarette cyclonic flow region (22) At least one temperature detector (15) is respectively provided with domain.
A kind of 7. vaporising device applied to desulfurization wastewater according to claim 1, it is characterised in that the evaporating column (2) inner chamber (16) and exocoel (17) are provided with, the exocoel (17) be located at evaporating column (2) inwall and subregion dividing plate (8) it Between, the inner chamber (16) is formed by subregion dividing plate (8).
A kind of 8. vaporising device applied to desulfurization wastewater according to claim 1 or 7, it is characterised in that the subregion Dividing plate (8) includes upper divider plate portions (19) and lower divider plate portions (20), and the upper divider plate portions (19) are located at lower divider plate portions (20) top is simultaneously connected with lower divider plate portions (20), and the upper divider plate portions (19) are arranged at the flue entrance of evaporating column (2) (10) in, lower divider plate portions (20) are set in the cavity of evaporating column (2).
9. a kind of vaporising device applied to desulfurization wastewater according to claim 6, it is characterised in that also including baffle plate control Device (23) processed, described damper actuator (23) are connected with controllable register (7), damper actuator (23) and electric control system (18) connect, the electric control system (18) is connected with temperature detector (15).
CN201720883605.9U 2017-07-20 2017-07-20 A kind of vaporising device applied to desulfurization wastewater Withdrawn - After Issue CN207079022U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107188258A (en) * 2017-07-20 2017-09-22 中国华电科工集团有限公司 A kind of vaporising device and control method applied to desulfurization wastewater
CN108793296A (en) * 2018-07-19 2018-11-13 江苏京源环保股份有限公司 A kind of high-temperature flue gas processing desulfurization wastewater drying tower and processing method
CN109126170A (en) * 2018-11-06 2019-01-04 中国华能集团有限公司 A kind of spray-drying installation of air and gas system and its desulfurization wastewater
CN116514206A (en) * 2023-05-22 2023-08-01 江苏彬鹏环保有限公司 Treatment device for concentrating desulfurization wastewater by coupling evaporation of flue gas waste heat of power plant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107188258A (en) * 2017-07-20 2017-09-22 中国华电科工集团有限公司 A kind of vaporising device and control method applied to desulfurization wastewater
CN107188258B (en) * 2017-07-20 2023-07-14 中国华电科工集团有限公司 Evaporation device applied to desulfurization wastewater and control method
CN108793296A (en) * 2018-07-19 2018-11-13 江苏京源环保股份有限公司 A kind of high-temperature flue gas processing desulfurization wastewater drying tower and processing method
CN109126170A (en) * 2018-11-06 2019-01-04 中国华能集团有限公司 A kind of spray-drying installation of air and gas system and its desulfurization wastewater
CN109126170B (en) * 2018-11-06 2024-03-12 中国华能集团有限公司 A kind of smoke and air system and its spray drying device for desulfurization wastewater
CN116514206A (en) * 2023-05-22 2023-08-01 江苏彬鹏环保有限公司 Treatment device for concentrating desulfurization wastewater by coupling evaporation of flue gas waste heat of power plant
CN116514206B (en) * 2023-05-22 2023-11-10 江苏彬鹏环保有限公司 Treatment device for concentrating desulfurization wastewater by coupling evaporation of flue gas waste heat of power plant

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