CN204550303U - Desulfurization wastewater underload evaporation process system - Google Patents
Desulfurization wastewater underload evaporation process system Download PDFInfo
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- CN204550303U CN204550303U CN201520137883.0U CN201520137883U CN204550303U CN 204550303 U CN204550303 U CN 204550303U CN 201520137883 U CN201520137883 U CN 201520137883U CN 204550303 U CN204550303 U CN 204550303U
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Abstract
The utility model discloses a kind of desulfurization wastewater underload evaporation process system, be connected with fume treatment flue, comprise high-efficiency cyclone separator, Waste water concentrating reducing device and Waste liquid atomization device, high-efficiency cyclone separator, Waste water concentrating reducing device are communicated with successively with Waste liquid atomization device, and Waste liquid atomization device is arranged on fume treatment flue.The utility model arranges high-efficiency cyclone separator before Waste water concentrating reducing device, high-efficiency cyclone separator is by impurity filtering larger for diameter in desulfurization waste liquor, pretreatment work load obviously alleviates, adopt low load operating mode make its run more stable, the life-span is longer; Desulfurization wastewater obtains the decrement of 30 to 50% simultaneously, liquid-gas ratio reduces greatly, significantly can alleviate desulfurization wastewater spray evaporation system by the impact of fluctuation, the corrosion and scaling equivalent risk avoiding spray droplet to enter fly-ash separator bringing, thus realize desulfurization wastewater Zero discharging system safe and stable operation.Thus improve the stability of system works, and reduce energy consumption.
Description
Technical field
The utility model relates to a kind of desulfurization wastewater underload evaporation process system, belongs to desulfurization wastewater process field.
Background technology
In numerous desulfurization methods, because Gypsum Wet carries out flue gas desulfurization technique maturation, long-time continuous operation troubles rate is relatively low, and desulfurization slag such as can to fully utilize at the advantage, is widely used.Containing the composition that many environmental pollutions are stronger in desulfurization wastewater, must process, otherwise secondary pollution will be produced to environment.Existing desulfurization wastewater transmission complex treatment process, operation amount is large, not easily automatically controls, most power plant operation result is undesirable, waste water after process still has very high chlorine ion concentration, extremely strong to the corrodibility of metal and equipment, causes the desulfurization wastewater after processing to be back to other system.One of current desalination technology most effective means having become desulfurization wastewater process.
Conventional reverse osmosis desalination system is used to process desulfurization wastewater high to pre-processing requirements, must ensure that existing sweetener normally runs, and need to add a large amount of medicaments, as flocculation, pH value regulator etc., otherwise membranous system pre-treatment load is crossed senior general and is caused membranous system cost significantly to increase.For membranous system, even if the rate of recovery also often exists about 70%, membranous system operating pressure is too high, fouling membrane serious and the problem of the membrane module lost of life.Meanwhile, membranous system is not the terminal process mode of sewage, can produce a large amount of membrane concentration liquid.Concentrated solution evaporates and very easily occurs the problems such as fouling of evaporator, energy consumption are high in vaporizer, and the residue on evaporation produced contains the pollutents such as heavy metal, the pollution that mishandling very possible generation is extra.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, micron order fine solid particles thing to be suspended in flue gas and to enter electric precipitator with flue gas together with ash, caught by electrode in electric precipitator, with the outer row of ash.The method investment is less, running cost is lower, but for most power plant, the ratio (liquid-gas ratio) of desulfurization waste liquor and stack gas is bigger than normal, any link breaks down and all likely causes waste liquid to drip entering electric dust removing system, bring the serious consequences such as pole plate of dust remover corrosion and scaling.For the high heat power plant of reliability requirement, there is larger risk in this technology.Therefore, how to make the desulfurization wastewater water yield reduce further, obtain less liquid-gas ratio, thus waste liquid evaporation fully more fast in flue, enable the work of desulfurization wastewater treatment system temperature, become problem demanding prompt solution.
Utility model content
The purpose of this utility model is, a kind of desulfurization wastewater underload evaporation process system is provided, first by the part large granular impurity filtering in desulfurization wastewater before Waste water concentrating reducing device, then through the Waste water concentrating reducing device of underrun, waste water after concentrated decrement enters the flue before fly-ash separator through atomizing nozzle formation fine droplet, and waste water drop is vaporized completely before entering fly-ash separator.This system significantly can alleviate desulfurization wastewater spray evaporation system by the impact of fluctuation, the corrosion and scaling equivalent risk avoiding spray droplet to enter fly-ash separator bringing, thus realizes desulfurization wastewater Zero discharging system safe and stable operation.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of desulfurization wastewater underload evaporation process system, be connected with fume treatment flue, comprise high-efficiency cyclone separator, Waste water concentrating reducing device and Waste liquid atomization device, high-efficiency cyclone separator, Waste water concentrating reducing device are communicated with successively with Waste liquid atomization device, and Waste liquid atomization device is arranged on fume treatment flue.This desulfurization wastewater underload evaporation process system arranges high-efficiency cyclone separator before Waste water concentrating reducing device, high-efficiency cyclone separator is by impurity filtering larger for the diameter in desulfurization waste liquor, Waste water concentrating reducing device is entered by the desulfurization waste liquor after purifying first, high-efficiency cyclone separator relies on machinery and physical action, without the need to adding flocculation agent, without the need to regulating pH, realized the particle removal of >=20 μm by the effect of machinery, avoid the extra salt that in existing technique, a large amount of dosing and acid-base neutralisation bring to give the larger pressure of subsequent film system.Can ensure by very low energy consumption the work that Waste water concentrating abatement system is more stable, simultaneously membranous system is with underrun, the fouling membrane fouling avoiding high-recovery (as about 70%) to cause is serious, the life-span significantly the situation such as cripetura occur.Desulfurization wastewater after being atomized evaporates after absorbing the heat of flue gas, avoids the dense water of membranous system in common vaporizer, evaporate the problem such as common easy fouling, energy consumption height.
Because the granule foreign in desulfurization wastewater is by high-efficiency cyclone separator and the filtering of Waste water concentrating abatement system, therefore, spraying plant latch up phenomenon can be avoided, desulfurization wastewater obtains the decrement of 30 to 50% simultaneously, liquid-gas ratio reduces greatly, significantly can alleviate the impact of desulfurization wastewater spray evaporation system by fluctuation, the corrosion and scaling equivalent risk avoiding spray droplet to enter fly-ash separator bringing, thus realize desulfurization wastewater Zero discharging system safe and stable operation, and reduce energy consumption, the normal operation of smoke processing system can not be affected.
Described high-efficiency cyclone separator refers to the high-efficiency cyclone separator that the clearance being greater than 20 μm of particles in waste liquid can be greater than 95%.In aforesaid desulfurization wastewater underload evaporation process system, Waste water concentrating reducing device comprises reverse osmosis membrane pretreatment unit and reverse osmosis desalination plant, reverse osmosis desalination plant is connected with reverse osmosis membrane pretreatment unit, reverse osmosis desalination plant is arranged on the downstream of reverse osmosis membrane pretreatment unit, reverse osmosis membrane pretreatment unit is connected with high-efficiency cyclone separator, and reverse osmosis desalination plant is connected with Waste liquid atomization device.
In aforesaid desulfurization wastewater underload evaporation process system, Waste liquid atomization device is arranged on the middle and upper part of fume treatment flue inner wall.Waste liquid atomization device is arranged on the suspension time that fume treatment flue middle and upper part can lengthen the droplet of the desulfurization waste liquor of ejection, prevents droplet to be attached to the inwall of fume treatment flue too early due to action of gravity, thus ensure that the rate of evaporation of desulfurization waste liquor.
In aforesaid desulfurization wastewater underload evaporation process system, the upstream of high-efficiency cyclone separator is provided with desulfurization waste liquor intake pump.Desulfurization waste liquor intake pump provides power for desulfurization waste liquor enters high-efficiency cyclone separator.
In aforesaid desulfurization wastewater underload evaporation process system, Waste water concentrating reducing device is provided with water purification recovery port.Continue in the water purification retrieval system that Waste water concentrating reducing device extracts to use.
In aforesaid desulfurization wastewater underload evaporation process system, between Waste water concentrating reducing device and Waste liquid atomization device, be communicated with air compressor machine.The degree of atomization of the waste liquid from the ejection of Waste liquid atomization device can be increased by arranging air compressor machine.
Compared with prior art, the utility model arranges high-efficiency cyclone separator before Waste water concentrating reducing device, high-efficiency cyclone separator is by impurity filtering larger for diameter in desulfurization waste liquor, and pretreatment work load obviously alleviates, adopt low load operating mode make its run more stable, the life-span is longer; Desulfurization wastewater obtains the decrement of 30-50% simultaneously, liquid-gas ratio reduces greatly, significantly can alleviate desulfurization wastewater spray evaporation system by the impact of fluctuation, the corrosion and scaling equivalent risk avoiding spray droplet to enter fly-ash separator bringing, realizes desulfurization wastewater Zero discharging system safe and stable operation.Thus improve the stability of system works, and reduce energy consumption.
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.
Reference numeral: 1-Waste liquid atomization device, 2-fume treatment flue, 3-is sprayed into saliva pump, 4-Waste water concentrating reducing device, 5-reverse osmosis desalination plant, 6-reverse osmosis membrane pretreatment unit, 7-high-efficiency cyclone separator, 8-desulfurization waste liquor intake pump, 9-water purification recovery port, 10-air compressor machine.
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 underload evaporation process system, be connected with fume treatment flue 2, comprise high-efficiency cyclone separator 7, Waste water concentrating reducing device 4 and Waste liquid atomization device 1, high-efficiency cyclone separator 7, Waste water concentrating reducing device 4 are communicated with successively with Waste liquid atomization device 1, and Waste liquid atomization device 1 is arranged on fume treatment flue 2.
Waste liquid atomization device 1 is arranged on the top of fume treatment flue 2 inwall.
As shown in Figure 2, the upstream of high-efficiency cyclone separator 7 is provided with desulfurization waste liquor intake pump 8.
Be provided with between Waste water concentrating reducing device 4 and Waste liquid atomization device 1 and be sprayed into saliva pump 3.
Waste water concentrating reducing device 4 is provided with water purification recovery port 9.
Embodiment 2: as shown in Figure 1, a kind of desulfurization wastewater underload evaporation process system, be connected with fume treatment flue 2, comprise high-efficiency cyclone separator 7, Waste water concentrating reducing device 4 and Waste liquid atomization device 1, high-efficiency cyclone separator 7, Waste water concentrating reducing device 4 are communicated with successively with Waste liquid atomization device 1, and Waste liquid atomization device 1 is arranged on fume treatment flue 2.
Waste water concentrating reducing device 4 comprises reverse osmosis membrane pretreatment unit 6 and reverse osmosis desalination plant 5, reverse osmosis desalination plant 5 is connected with reverse osmosis membrane pretreatment unit 6, reverse osmosis desalination plant 5 is arranged on the downstream of reverse osmosis membrane pretreatment unit 6, reverse osmosis membrane pretreatment unit 6 is connected with high-efficiency cyclone separator 7, and reverse osmosis desalination plant 5 is connected with Waste liquid atomization device 1.
Waste liquid atomization device 1 is arranged on the top of fume treatment flue 2 inwall, and Waste liquid atomization device 1 can arrange with on vertical fume treatment flue 2 equally, and now, Waste liquid atomization device 1 is located at fume treatment flue 2 central position.As shown in Figure 2, the upstream of high-efficiency cyclone separator 7 is provided with desulfurization waste liquor intake pump 8.
Be provided with between Waste water concentrating reducing device 4 and Waste liquid atomization device 1 and be sprayed into saliva pump 3.
Waste water concentrating reducing device 4 is provided with water purification recovery port 9.
Embodiment 3: as shown in Figure 3, a kind of desulfurization wastewater underload evaporation process system, be connected with fume treatment flue 2, comprise high-efficiency cyclone separator 7, Waste water concentrating reducing device 4 and Waste liquid atomization device 1, high-efficiency cyclone separator 7, Waste water concentrating reducing device 4 are communicated with successively with Waste liquid atomization device 1, and Waste liquid atomization device 1 is arranged on fume treatment flue 2.
Waste water concentrating reducing device 4 comprises reverse osmosis membrane pretreatment unit 6 and reverse osmosis desalination plant 5, reverse osmosis desalination plant 5 is connected with reverse osmosis membrane pretreatment unit 6, reverse osmosis desalination plant 5 is arranged on the downstream of reverse osmosis membrane pretreatment unit 6, reverse osmosis membrane pretreatment unit 6 is connected with high-efficiency cyclone separator 7, and reverse osmosis desalination plant 5 is connected with Waste liquid atomization device 1.
Air compressor machine 10 is communicated with between Waste water concentrating reducing device 4 and Waste liquid atomization device 1.
Principle of work of the present utility model: this desulfurization wastewater underload evaporation process system arranges high-efficiency cyclone separator 7 before Waste water concentrating reducing device 4, high-efficiency cyclone separator 7 is by impurity filtering larger for the diameter in desulfurization waste liquor, Waste water concentrating reducing device 4 is entered by the desulfurization waste liquor after purifying first, the working load of Waste water concentrating reducing device 4 can be reduced, work that can be more stable.Continue in the water purification retrieval system that Waste water concentrating reducing device 4 extracts to use.Desulfurization wastewater sprays in fume treatment flue 2 after being atomized by Waste liquid atomization device 1, and the desulfurization wastewater after being atomized evaporates after absorbing the heat of flue gas in fume treatment flue 2.On fume treatment flue 2, the downstream of Waste liquid atomization device 1 is provided with electric dust collector, and the impurity produced after desulfurization waste liquor evaporation is by electric dust collector filtering.
This desulfurization wastewater underload evaporation process system arranges high-efficiency cyclone separator 7 before Waste water concentrating reducing device 4, high-efficiency cyclone separator 7 is by impurity filtering larger for the diameter in desulfurization waste liquor, Waste water concentrating reducing device 4 is entered by the desulfurization waste liquor after purifying first, high-efficiency cyclone separator 7 relies on machinery and physical action, without the need to adding flocculation agent, without the need to regulating pH, realized the particle removal of >=20 μm by the effect of machinery, avoid the extra salt that in existing technique, a large amount of dosing and acid-base neutralisation bring to give the larger pressure of subsequent film system.The work that Waste water concentrating reducing device 4 can be more stable is ensured by very low energy consumption, membranous system is with underrun simultaneously, the fouling membrane fouling avoiding high-recovery (as about 70%) to cause is serious, the life-span significantly the situation such as cripetura occur, spray in fume treatment flue after the less more stably desulphurizing waste water of membranous system investment is atomized by Waste liquid atomization device 1, desulfurization wastewater after being atomized evaporates after absorbing the heat of flue gas in fume treatment flue, avoids the dense water of membranous system in common vaporizer, evaporate the problem such as common easy fouling, energy consumption height.Because the granule foreign in desulfurization wastewater is by high-efficiency cyclone separator 7 and Waste water concentrating reducing device 4 filtering, therefore, spraying plant latch up phenomenon can be avoided, desulfurization wastewater obtains the decrement of 30-50% simultaneously, liquid-gas ratio reduces greatly, significantly can alleviate the impact of desulfurization wastewater spray evaporation system by fluctuation, the corrosion and scaling equivalent risk avoiding spray droplet to enter fly-ash separator bringing, thus realize desulfurization wastewater Zero discharging system safe and stable operation, and reduce energy consumption, the normal operation of smoke processing system can not be affected.
Claims (6)
1. a desulfurization wastewater underload evaporation process system, be connected with fume treatment flue (2), it is characterized in that, comprise high-efficiency cyclone separator (7), Waste water concentrating reducing device (4) and Waste liquid atomization device (1), high-efficiency cyclone separator (7), Waste water concentrating reducing device (4) are communicated with successively with Waste liquid atomization device (1), and Waste liquid atomization device (1) is arranged on fume treatment flue (2).
2. desulfurization wastewater underload evaporation process system according to claim 1, it is characterized in that, Waste water concentrating reducing device (4) comprises reverse osmosis membrane pretreatment unit (6) and reverse osmosis desalination plant (5), reverse osmosis desalination plant (5) is connected with reverse osmosis membrane pretreatment unit (6), reverse osmosis desalination plant (5) is arranged on the downstream of reverse osmosis membrane pretreatment unit (6), reverse osmosis membrane pretreatment unit (6) is connected with high-efficiency cyclone separator (7), reverse osmosis desalination plant (5) is connected with Waste liquid atomization device (1).
3. desulfurization wastewater underload evaporation process system according to claim 1 and 2, it is characterized in that, Waste liquid atomization device (1) is arranged on the middle and upper part of fume treatment flue (2) inwall.
4. desulfurization wastewater underload evaporation process system according to claim 1 and 2, is characterized in that, the upstream of high-efficiency cyclone separator (7) is provided with desulfurization waste liquor intake pump (8).
5. desulfurization wastewater underload evaporation process system according to claim 1 and 2, it is characterized in that, Waste water concentrating reducing device (4) is provided with water purification recovery port (9).
6. desulfurization wastewater underload evaporation process system according to claim 1 and 2, is characterized in that, be communicated with air compressor machine (10) between Waste water concentrating reducing device (4) and Waste liquid atomization device (1).
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Cited By (6)
| 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 |
| CN105692991A (en) * | 2016-01-19 | 2016-06-22 | 东华大学 | Method and device for preparing solid derived fuel through flush liberation-catalyzing carbonization of high-concentration industrial organic waste liquid |
| CN106145228A (en) * | 2016-09-08 | 2016-11-23 | 国投百川环保科技（北京）有限公司 | The two-part vaporising device of desulfurization wastewater and processing method thereof |
| CN107143841A (en) * | 2017-05-22 | 2017-09-08 | 大唐(北京)能源管理有限公司 | The comprehensive improvement system of desulfurization wastewater and thermal flue gas under a kind of running on the lower load |
| CN108751562A (en) * | 2018-08-29 | 2018-11-06 | 上海电气电站环保工程有限公司 | A kind of industrial wastewater treatment system |
| CN111792690A (en) * | 2020-04-27 | 2020-10-20 | 大唐环境产业集团股份有限公司 | Device and method for realizing zero discharge of desulfurization wastewater by using flue gas waste heat |
-
2015
- 2015-03-11 CN CN201520137883.0U patent/CN204550303U/en active Active
Cited By (7)
| 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 |
| CN105692991A (en) * | 2016-01-19 | 2016-06-22 | 东华大学 | Method and device for preparing solid derived fuel through flush liberation-catalyzing carbonization of high-concentration industrial organic waste liquid |
| CN106145228A (en) * | 2016-09-08 | 2016-11-23 | 国投百川环保科技（北京）有限公司 | The two-part vaporising device of desulfurization wastewater and processing method thereof |
| CN107143841A (en) * | 2017-05-22 | 2017-09-08 | 大唐(北京)能源管理有限公司 | The comprehensive improvement system of desulfurization wastewater and thermal flue gas under a kind of running on the lower load |
| CN108751562A (en) * | 2018-08-29 | 2018-11-06 | 上海电气电站环保工程有限公司 | A kind of industrial wastewater treatment system |
| CN111792690A (en) * | 2020-04-27 | 2020-10-20 | 大唐环境产业集团股份有限公司 | Device and method for realizing zero discharge of desulfurization wastewater by using flue gas waste heat |
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