CN204550302U - Desulfurization wastewater preheating spray evaporation system - Google Patents

Desulfurization wastewater preheating spray evaporation system Download PDF

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Publication number
CN204550302U
CN204550302U CN201520136263.5U CN201520136263U CN204550302U CN 204550302 U CN204550302 U CN 204550302U CN 201520136263 U CN201520136263 U CN 201520136263U CN 204550302 U CN204550302 U CN 204550302U
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waste liquid
flue
atomization device
desulfurization
heater unit
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CN201520136263.5U
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彭维明
李宗慧
王珍
段翠佳
徐志成
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CHINA HUADIAN SCIENCE AND TECHNOLOGY INSTITUTE Co Ltd
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CHINA HUADIAN SCIENCE AND TECHNOLOGY INSTITUTE Co Ltd
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Abstract

The utility model discloses a kind of desulfurization wastewater preheating spray evaporation system, be connected with flue, comprise fly-ash separator, high-efficiency cyclone separator, waste liquid transfer lime and Waste liquid atomization device, fly-ash separator is arranged on flue, waste liquid transfer lime is connected with high-efficiency cyclone separator, and high-efficiency cyclone separator is connected with Waste liquid atomization device, and Waste liquid atomization device is connected with flue, also comprise waste liquid primary heater unit, waste liquid primary heater unit is connected with flue with high-efficiency cyclone separator.The utility model is by setting up waste liquid primary heater unit, the temperature of desulfurization waste liquor can be improved, desulfurization waste liquor is when spraying from Waste liquid atomization device, there is higher temperature, the desulfurization waste liquor that temperature is higher can evaporate more fast, prevent not having the desulfurization waste liquor evaporated to enter downstream unit, cause downstream unit to damage.

Description

Desulfurization wastewater preheating spray evaporation system
Technical field
The utility model relates to a kind of desulfurization wastewater preheating spray evaporation system, belongs to field of waste water treatment.
Background technology
Existing desulfurization wastewater complex process, operation amount controls greatly, not easily automatically, and most power plant operation result is undesirable, and the waste water after process still has very high chlorine ion concentration, extremely strong to the corrodibility of hardware, cause the desulfurization wastewater after processing cannot be used for other system.
At present, evaporate desalination technology and become desulfurization wastewater process one of effective means the most.But desulfurization wastewater saltiness is high, in vaporizer, evaporate the problem very easily occurring fouling, and power consumption is higher.Desulfurization wastewater spray evaporation technology can address this problem, the method is that desulfurization wastewater is sprayed into flue between electric precipitator and air preheater by nozzle atomization, atomizing droplet group absorbs fume afterheat and evaporates rapidly in flue, the method less investment, running cost is low, but need power-plant flue gas system, desulphurization systems etc. carry out systematic research and accounting, detailed system design and perfect automatic control is carried out according to the many operating parameters of power plant, any link breaks down and waste liquid all may be caused to drip enter electric dust removing system, pole plate of dust remover is brought to corrode, the serious consequences such as fouling.For the high heat power plant of reliability requirement, there is larger risk in this technology.Based on this, the interference avoiding Waste Water Treatment to cause flare system and infringement, become problem demanding prompt solution.
Utility model content
The purpose of this utility model is, a kind of desulfurization wastewater preheating spray evaporation system is provided, desulfurization waste liquor can evaporate more fast in flue, can avoid desulfurization waste liquor in flue due to could not rapid evaporation, cause the drop of unevaporated desulfurization waste liquor to enter downstream unit, cause downstream equipment to damage.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of desulfurization wastewater preheating spray evaporation system, be connected with flue, comprise high-efficiency cyclone separator, waste liquid transfer lime and Waste liquid atomization device, waste liquid transfer lime is connected with high-efficiency cyclone separator, high-efficiency cyclone separator is connected with Waste liquid atomization device, Waste liquid atomization device is connected with flue, also comprises waste liquid primary heater unit, and waste liquid primary heater unit is connected with flue with high-efficiency cyclone separator.By addition waste liquid primary heater unit in native system, desulfurization waste liquor before entering high-efficiency cyclone separator first through waste liquid primary heater unit, meanwhile, flue gas in flue also enters waste liquid primary heater unit, flue gas and desulfurization waste liquor carry out heat exchange in waste liquid primary heater unit, desulfurization waste liquor temperature is raised, desulfurization waste liquor temperature in waste liquid primary heater unit can raise 5-30 DEG C, the desulfurization waste liquor of comparatively high temps can evaporate more fast after the ejection of Waste liquid atomization device, thus ensure that desulfurization waste liquor can not enter fly-ash separator because of inabundant evaporation and cause damage to it.
In aforesaid desulfurization wastewater preheating spray evaporation system, waste liquid primary heater unit comprises gas approach, exhanst gas outlet, fluid inlet and liquid outlet, gas approach is connected with flue with exhanst gas outlet, and fluid inlet is connected with waste liquid transfer lime, and liquid outlet is connected with Waste liquid atomization device.Flue gas enters from gas approach and flows out from exhanst gas outlet, and desulfurization waste liquor enters from fluid inlet, and flow out from liquid outlet, in the process, flue gas and desulfurization waste liquor carry out heat exchange, and desulfurization waste liquor temperature is raised.
In aforesaid desulfurization wastewater preheating spray evaporation system, flue is provided with fly-ash separator, and gas approach, exhanst gas outlet are connected with the flue of Waste liquid atomization device with fly-ash separator upstream.Waste liquid atomization device is arranged on the upstream of fly-ash separator, can prevent the impurity in desulfurization waste liquor from entering downstream unit, and the impurity in desulfurization waste liquor can by fly-ash separator filtering.Further, the flue-gas temperature of fly-ash separator upstream is higher, can desulfurization waste liquor be made more efficiently to evaporate.
In aforesaid desulfurization wastewater preheating spray evaporation system, flue is provided with fly-ash separator, and Waste liquid atomization device is connected with the flue of fly-ash separator upstream, and gas approach is connected with the flue of exhanst gas outlet with fly-ash separator downstream.The impact of process desulfurization waste liquor on fume treatment can be down to minimum by downstream gas approach and exhanst gas outlet being arranged on fly-ash separator.
In aforesaid desulfurization wastewater preheating spray evaporation system, gas approach is positioned on the flue of exhanst gas outlet upstream, on the flue before also can being positioned at flue gas heat-exchange unit, before fly-ash separator or after fly-ash separator.
In aforesaid desulfurization wastewater preheating spray evaporation system, waste liquid primary heater unit is direct heat-exchanging type or indirect heat exchange type.Above-mentioned direct heat-exchanging type refers to that flue gas directly contacts with desulfurization waste liquor; Indirect heat exchange type refers to that flue gas passes through to immerse the pipeline, heat exchanger plates etc. of desulfurization waste liquor and carries out heat trnasfer.
In aforesaid desulfurization wastewater preheating spray evaporation system, Waste liquid atomization device is positioned at the inside of flue.
In aforesaid desulfurization wastewater preheating spray evaporation system, also comprise waste liquid intake pump, waste liquid intake pump is connected with waste liquid transfer lime.Waste liquid intake pump is used for providing power for the flowing of desulfurization waste liquor.
In aforesaid desulfurization wastewater preheating spray evaporation system, also comprise flue gas air intake pump, flue gas air intake pump is connected with gas approach.Flue gas air intake pump is used for providing power for flue gas enters waste liquid primary heater unit.
Compared with prior art, the utility model is by setting up waste liquid primary heater unit, before entering Waste liquid atomization device, desulfurization waste liquor is heated, desulfurization waste liquor is when spraying from Waste liquid atomization device, there is higher temperature, the desulfurization waste liquor that temperature is higher can evaporate more fast, and preventing does not have the desulfurization waste liquor evaporated to enter downstream unit, causes downstream unit to damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model;
Fig. 2 is the structural representation of another kind of embodiment of the present utility model;
Fig. 3 is the structural representation of another embodiment of the present utility model;
Fig. 4 is the structural representation of another embodiment of the present utility model;
Fig. 5 is the structural representation of the 5th kind of embodiment of the present utility model;
Fig. 6 is the structural representation of the 6th kind of embodiment of the present utility model.
Reference numeral: 1-flue, 2-Waste liquid atomization device, 3-fly-ash separator, 4-high-efficiency cyclone separator, 5-waste liquid intake pump, 6-fluid inlet, 7-liquid outlet, 8-exhanst gas outlet, 9-waste liquid primary heater unit, 10-gas approach, 11-flue gas air intake pump, 12-waste liquid transfer lime, 13-air compressor.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment
Embodiment 1 of the present utility model: as shown in Figure 1, a kind of desulfurization wastewater preheating spray evaporation system, be connected with flue 1, comprise high-efficiency cyclone separator 4, waste liquid transfer lime 12 and Waste liquid atomization device 2, waste liquid transfer lime 12 is connected with high-efficiency cyclone separator 4, and high-efficiency cyclone separator 4 is connected with Waste liquid atomization device 2, and Waste liquid atomization device 2 is connected with flue 1, also comprise waste liquid primary heater unit 9, waste liquid primary heater unit 9 is connected with flue 1 with high-efficiency cyclone separator 4.
As shown in Figure 2, waste liquid primary heater unit 9 is direct heat-exchanging types.
Waste liquid atomization device 2 is positioned at the inside of flue 1.
Also comprise waste liquid intake pump 5, waste liquid intake pump 5 is connected with waste liquid transfer lime 12.
Also comprise flue gas air intake pump 11, flue gas air intake pump 11 is connected with gas approach 10.
Embodiment 2: as shown in Figure 1, a kind of desulfurization wastewater preheating spray evaporation system, be connected with flue 1, comprise high-efficiency cyclone separator 4, waste liquid transfer lime 12 and Waste liquid atomization device 2, waste liquid transfer lime 12 is connected with high-efficiency cyclone separator 4, and high-efficiency cyclone separator 4 is connected with Waste liquid atomization device 2, and Waste liquid atomization device 2 is connected with flue 1, also comprise waste liquid primary heater unit 9, waste liquid primary heater unit 9 is connected with flue 1 with high-efficiency cyclone separator 4.
Waste liquid primary heater unit 9 comprises gas approach 10, exhanst gas outlet 8, fluid inlet 6 and liquid outlet 7, and gas approach 10 is connected with flue 1 with exhanst gas outlet 8, and fluid inlet 6 is connected with waste liquid transfer lime 12, and liquid outlet 7 is connected with Waste liquid atomization device 2.
Gas approach 10 is positioned on the flue 1 of exhanst gas outlet 8 upstream.
As shown in Figure 3, waste liquid primary heater unit 9 is indirect heat exchange types, and the flue between Waste liquid atomization device 2 and high-efficiency cyclone separator 4 is communicated with air compressor 13, higher by arranging the Waste liquid atomization degree that air compressor 13 can make Waste liquid atomization device 2 spray.
Waste liquid atomization device 2 is positioned at the top of flue 1.
Also comprise waste liquid intake pump 5, waste liquid intake pump 5 is connected with waste liquid transfer lime 12.
As shown in Figure 4, also comprise flue gas air intake pump 11, flue gas air intake pump 11 is connected with gas approach 10.
Embodiment 3: as shown in Figure 1, a kind of desulfurization wastewater preheating spray evaporation system, be connected with flue 1, comprise high-efficiency cyclone separator 4, waste liquid transfer lime 12 and Waste liquid atomization device 2, waste liquid transfer lime 12 is connected with high-efficiency cyclone separator 4, and high-efficiency cyclone separator 4 is connected with Waste liquid atomization device 2, Waste liquid atomization device 2 is connected with flue 1,, also comprise waste liquid primary heater unit 9, waste liquid primary heater unit 9 is connected with flue 1 with high-efficiency cyclone separator 4.
Waste liquid primary heater unit 9 comprises gas approach 10, exhanst gas outlet 8, fluid inlet 6 and liquid outlet 7, and gas approach 10 is connected with flue 1 with exhanst gas outlet 8, and fluid inlet 6 is connected with waste liquid transfer lime 12, and liquid outlet 7 is connected with Waste liquid atomization device 2.
As shown in Figure 4, flue 1 is provided with fly-ash separator 3, and Waste liquid atomization device 2 is connected with the flue 1 of fly-ash separator 3 upstream, and gas approach 10 is connected with the flue 1 of exhanst gas outlet 8 with fly-ash separator 3 downstream.
Gas approach 10 is positioned on the flue 1 in exhanst gas outlet 8 downstream.
Waste liquid primary heater unit 9 is direct heat-exchanging types.
Waste liquid atomization device 2 is positioned at the top of flue 1.
Also comprise waste liquid intake pump 5, waste liquid intake pump 5 is connected with waste liquid transfer lime 12.
Also comprise flue gas air intake pump 11, flue gas air intake pump 11 is connected with gas approach 10.
Embodiment 4: as shown in Figure 2, a kind of desulfurization wastewater preheating spray evaporation system, be connected with flue 1, comprise high-efficiency cyclone separator 4, waste liquid transfer lime 12 and Waste liquid atomization device 2, waste liquid transfer lime 12 is connected with high-efficiency cyclone separator 4, and high-efficiency cyclone separator 4 is connected with Waste liquid atomization device 2, and Waste liquid atomization device 2 is connected with flue 1, also comprise waste liquid primary heater unit 9, waste liquid primary heater unit 9 is connected with flue 1 with high-efficiency cyclone separator 4.
Waste liquid primary heater unit 9 comprises gas approach 10, exhanst gas outlet 8, fluid inlet 6 and liquid outlet 7, and gas approach 10 is connected with flue 1 with exhanst gas outlet 8, and fluid inlet 6 is connected with waste liquid transfer lime 12, and liquid outlet 7 is connected with Waste liquid atomization device 2.
Flue 1 is provided with fly-ash separator 3, and gas approach 10, exhanst gas outlet 8 are connected with the flue 1 of Waste liquid atomization device 2 with fly-ash separator 3 upstream.
Gas approach 10 is positioned on the flue 1 of exhanst gas outlet 8 upstream.
Waste liquid primary heater unit 9 is indirect heat exchange types.
Waste liquid atomization device 2 is positioned at the top of flue 1.
Also comprise waste liquid intake pump 5, waste liquid intake pump 5 is connected with waste liquid transfer lime 12.
Also comprise flue gas air intake pump 11, flue gas air intake pump 11 is connected with gas approach 10.
Embodiment 5: as shown in Figure 1, a kind of desulfurization wastewater preheating spray evaporation system, be connected with flue 1, comprise high-efficiency cyclone separator 4, waste liquid transfer lime 12 and Waste liquid atomization device 2, waste liquid transfer lime 12 is connected with high-efficiency cyclone separator 4, and high-efficiency cyclone separator 4 is connected with Waste liquid atomization device 2, and Waste liquid atomization device 2 is connected with flue 1, also comprise waste liquid primary heater unit 9, waste liquid primary heater unit 9 is connected with flue 1 with high-efficiency cyclone separator 4.
As shown in Figure 5, waste liquid primary heater unit 9 comprises gas approach 10, exhanst gas outlet 8, fluid inlet 6 and liquid outlet 7, gas approach 10 is connected with the flue 1 in fly-ash separator 3 downstream, exhanst gas outlet 8 is connected with the flue 1 of fly-ash separator 3 upstream, fluid inlet 6 is connected with waste liquid transfer lime 12, and liquid outlet 7 is connected with Waste liquid atomization device 2.
Gas approach 10 is positioned on the flue 1 in exhanst gas outlet 8 downstream, and gas approach 10 is connected with the flue in fly-ash separator downstream, and exhanst gas outlet 8 is connected with the flue of fly-ash separator 3 upstream.
Waste liquid primary heater unit 9 is direct heat-exchanging types.
Waste liquid atomization device 2 is positioned at the middle part of flue 1.
Also comprise waste liquid intake pump 5, waste liquid intake pump 5 is connected with waste liquid transfer lime 12.
Embodiment 6: as shown in Figure 6, in the present embodiment, flue gas leads to the liquid outlet of high-efficiency cyclone separator 4 through waste liquid primary heater unit 9 rear section flue gas, flue gas replaces pressurized air to enter Waste liquid atomization device, and flue gas carries out preheating to waste liquid, then flows to Waste liquid atomization device 2.All the other technology contents are identical with embodiment 3, and therefore not to repeat here.
Principle of work of the present utility model: first desulfurization waste liquor enters waste liquid primary heater unit 9, in waste liquid primary heater unit 9, desulfurization waste liquor carries out heat exchange with inner flue gas, the temperature of desulfurization waste liquor raises, then desulfurization waste liquor enters high-efficiency cyclone separator 4, desulfurization waste liquor is high speed rotating in high-efficiency cyclone separator 4, under the influence of centrifugal force, impurity in desulfurization waste liquor is separated, then desulfurization waste liquor enters Waste liquid atomization device 2, Waste liquid atomization device 2 sprays into flue 1 after being atomized by desulfurization waste liquor, enter the desulfurization waste liquor evaporation of flue 1, thus the chlorion in desulfurization waste liquor is separated, prevent from causing damage to downstream unit.Then flue gas enters fly-ash separator 3, and fly-ash separator 3 by the magazins' layout in flue gas out.Finally, flue gas leads to the desulfurizer in downstream, carries out desulfurization.Relative to prior art, native system, by setting up waste liquid primary heater unit 9, can improve the temperature of desulfurization waste liquor, and desulfurization waste liquor can be evaporated more fast in flue 1, prevents part desulfurization waste liquor from not evaporating, causes damage to downstream unit.

Claims (7)

1. a desulfurization wastewater preheating spray evaporation system, be connected with flue (1), it is characterized in that, comprise high-efficiency cyclone separator (4), waste liquid transfer lime (12) and Waste liquid atomization device (2), waste liquid transfer lime (12) is connected with high-efficiency cyclone separator (4), high-efficiency cyclone separator (4) is connected with Waste liquid atomization device (2), Waste liquid atomization device (2) is connected with flue (1), also comprise waste liquid primary heater unit (9), waste liquid primary heater unit (9) is connected with flue (1) with high-efficiency cyclone separator (4).
2. desulfurization wastewater preheating spray evaporation system according to claim 1, it is characterized in that, waste liquid primary heater unit (9) comprises gas approach (10), exhanst gas outlet (8), fluid inlet (6) and liquid outlet (7), gas approach (10) is connected with flue (1) with exhanst gas outlet (8), fluid inlet (6) is connected with waste liquid transfer lime (12), and liquid outlet (7) is connected with Waste liquid atomization device (2).
3. desulfurization wastewater preheating spray evaporation system according to claim 2, it is characterized in that, flue (1) is provided with fly-ash separator (3), and gas approach (10), exhanst gas outlet (8) are connected with the flue (1) of fly-ash separator (3) upstream with Waste liquid atomization device (2).
4. desulfurization wastewater preheating spray evaporation system according to claim 2, it is characterized in that, flue (1) is provided with fly-ash separator (3), Waste liquid atomization device (2) is connected with the flue (1) of fly-ash separator (3) upstream, and gas approach (10) is connected with the flue (1) in fly-ash separator (3) downstream with exhanst gas outlet (8).
5. the desulfurization wastewater preheating spray evaporation system according to any one of Claims 1-4, is characterized in that, waste liquid primary heater unit (9) is direct heat-exchanging type or indirect heat exchange type.
6. desulfurization wastewater preheating spray evaporation system according to claim 5, is characterized in that, Waste liquid atomization device (2) is positioned at the inside of flue (1).
7. desulfurization wastewater preheating spray evaporation system according to claim 6, is characterized in that, also comprises waste liquid intake pump (5), and waste liquid intake pump (5) is connected with waste liquid transfer lime (12).
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417604A (en) * 2016-01-18 2016-03-23 重庆远达水务有限公司 Method and device using fume residual heat to treat desulfurization waste water
CN105776706A (en) * 2016-04-14 2016-07-20 大唐环境产业集团股份有限公司 Device and method for treating desulfurized waste water through flue multi-level evaporation
CN112628739A (en) * 2020-12-16 2021-04-09 苏州乔发环保科技股份有限公司 Garbage fly ash carbonization furnace

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105417604A (en) * 2016-01-18 2016-03-23 重庆远达水务有限公司 Method and device using fume residual heat to treat desulfurization waste water
CN105417604B (en) * 2016-01-18 2018-11-20 重庆远达水务有限公司 Utilize the method and device of fume afterheat processing desulfurization wastewater
CN105776706A (en) * 2016-04-14 2016-07-20 大唐环境产业集团股份有限公司 Device and method for treating desulfurized waste water through flue multi-level evaporation
CN105776706B (en) * 2016-04-14 2018-09-25 大唐环境产业集团股份有限公司 A kind of device and method of flue multistage evaporation processing desulfurization wastewater
CN112628739A (en) * 2020-12-16 2021-04-09 苏州乔发环保科技股份有限公司 Garbage fly ash carbonization furnace

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