CN110015798A - Desulfurizing waste water processing device applied to coal-burning power plant - Google Patents
Desulfurizing waste water processing device applied to coal-burning power plant Download PDFInfo
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- CN110015798A CN110015798A CN201910276372.XA CN201910276372A CN110015798A CN 110015798 A CN110015798 A CN 110015798A CN 201910276372 A CN201910276372 A CN 201910276372A CN 110015798 A CN110015798 A CN 110015798A
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- China
- Prior art keywords
- desulfurization wastewater
- electrostatic precipitator
- atomization system
- atomising device
- flue
- Prior art date
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
- C02F1/12—Spray evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of desulfurizing waste water processing device applied to coal-burning power plant, burner hearth passes sequentially through economizer, air preheater, electrostatic precipitator, wet desulphurization device connection chimney；Wet desulphurization device lower part connects precipitating collecting pit by precipitation pond, and the flue between air preheater and electrostatic precipitator is provided with atomization system, and precipitation pond connects atomization system with water pump by water pipe；Atomization system includes hot shell and atomising device, atomising device connects water pipe, hot shell is equipped with outside atomising device, atomising device and flue are kept apart by hot shell, it is slowly heated desulfurization wastewater fog, prevents from directly contacting due to desulfurization wastewater fog with flue gas and excessive temperature differentials leads to condensation slagging.The device utilizes fume afterheat evaporation atomization desulfurization wastewater, the saline pollution object being dissolved in desulfurization wastewater is precipitated, it is removed by electrostatic precipitator, the hot shell of atomization system part can prevent particulate pollutant from falling back to atomising device surface, extend service using life.
Description
Technical field
The present invention relates to a kind of desulfurizing waste water processing devices being related to applied to coal-burning power plant, and it is useless to belong to Desulphurization for Coal-fired Power Plant
Water-treatment technology field.
Background technique
Current China's fire coal thermal power generation still occupies important proportion, but due to containing sulphur ingredient, fire in most of coal
The flue gas containing oxysulfide can be generated in power power generation process, it is serious to environmental hazard.Currently, most of thermal power plant is main
The sulfur dioxide in flue gas is removed by wet desulfurizing process.And a large amount of lime is added in wet desulfurizing process in absorption tower
Stone carrys out sulfur dioxide absorption, can generate desulfurization wastewater, the ionic state object containing a large amount of suspended matter, easy fouling in desulfurization wastewater
Matter and heavy metal.If the untreated direct outlet of desulfurization wastewater certainly will cause surrounding aqueous environment seriously to pollute, China pair
" zero-emission " is required in the desulfurization wastewater that thermal power plant wet desulphurization generates.Therefore production or the related desulfurization wastewater processing dress of improvement
It sets most important to protection environment and raising economy of power plant benefit.
Summary of the invention
Object of the present invention is to solve the above problems, and providing a kind of desulfurization wastewater processing dress applied to coal-burning power plant
Set, can some disadvantages in the existing processing unit of customer service, such as atomization system condensation vapor or evaporation as caused by the temperature difference
It is too fast and particulate pollutant is made to fall back to atomising device surface, to block atomization system.The invention provides a kind of initial cost
It is low, operation and maintenance cost it is low realization zero-emission power plant desulfurization wastewater treatment system and technique.
The purpose of the present invention is achieved through the following technical solutions:
A kind of desulfurizing waste water processing device applied to coal-burning power plant, including electrostatic precipitator, wet desulphurization device, water
Pump, precipitation pond, precipitating collecting pit, the burner hearth pass sequentially through economizer, air preheater, electrostatic precipitator, wet desulphurization
Device connects chimney；The wet desulphurization device lower part by precipitation pond connect precipitating collecting pit, the air preheater with
Flue between electrostatic precipitator is provided with atomization system, and the precipitation pond connects atomization system with water pump by water pipe
System；The atomization system includes hot shell and atomising device, and atomising device connects water pipe, is equipped with hot shell outside atomising device,
Atomising device and flue are kept apart by hot shell, desulfurization wastewater fog is slowly heated, prevents due to desulfurization wastewater fog
Directly contacted with flue gas and excessive temperature differentials cause condense slagging.
Further, the atomization system will be atomized the fume pipe before filtered desulfurization wastewater is emitted into electrostatic precipitator
In road, remaining solid particle is removed by electrostatic precipitator after vaporizing moisture.
Further, desulfurization wastewater is emitted into precipitation pond and carries out stewing process by the wet desulphurization device, and will be sunk
Precipitating disposal of pollutants in the pond of shallow lake is to precipitating collecting pit, and waste water by water pump is discharged into atomization system to sedimentation basin at the middle and upper levels.
The beneficial effects of the present invention are:
1. rationally handling using fume afterheat and electrostatic precipitator desulfurization wastewater, reduce dirt of the power plant to environment
Dye, reduces processing cost compared to other processing modes, to improve the economic benefit of power plant.
2. desulfurization wastewater carries out primary sedimentation filtering before being discharged into atomization system, the atomization of bulky grain contaminants clog is reduced
The risk of system.
3. atomising device and flue is temporarily isolating out by installing hot shell additional, be slowly heated desulfurization wastewater fog,
It prevents from directly contacting due to desulfurization wastewater fog with flue gas and excessive temperature differentials leads to condense slagging or evaporation is too fast and make particle
Pollutant falls back to atomising device surface, to block atomising device, reduces treatment effeciency.
4. present system is reasonable in design, initial investment is small, easy to operate, easy to maintain, is conducive to large-scale promotion
And implementation.
Detailed description of the invention
Fig. 1 is the desulfurizing waste water processing device structural schematic diagram applied to coal-burning power plant of the invention；
Fig. 2 is this atomization system partial structure diagram；
In figure: 1- burner hearth, 2- economizer, 3- air preheater, 4- atomization system, 5- electrostatic precipitator, 6- wet desulphurization
Device, 7- chimney, 8- water pump, 9- precipitation pond, 10- precipitate collecting pit, the hot shell of 21-, 22- atomising device.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of desulfurizing waste water processing device applied to coal-burning power plant, including burner hearth 1, economizer 2, air
Preheater 3, atomization system 4, electrostatic precipitator 5, wet desulphurization device 6, chimney 7, water pump 8, precipitation pond 9 and precipitating collecting pit
10.Burner hearth 1 passes sequentially through economizer 2, air preheater 3, electrostatic precipitator 5, wet desulphurization device 6 and connects chimney 7.Wet process is de-
6 lower part of sulphur device passes through the connection precipitating collecting pit 10 of precipitation pond 9.
Atomization system 4 is installed in the flue between air preheater 3 and electrostatic precipitator 5, for being atomized filtering
Desulfurization wastewater afterwards is emitted into the flue before electrostatic precipitator 5, and remaining solid particle passes through quiet after moisture vaporization
Electric precipitator removal.Precipitation pond 9 connects atomization system 4 by water pipe and water pump 8.
The desulfurization wastewater collected from wet desulphurization device 6 successively passes through precipitation pond 9, water pump 8 reaches atomization system 4, sinks
Sediment in shallow lake pond 9 be transported to precipitating collecting pit 10 after dry after reprocess.
As shown in Fig. 2, atomization system 4 includes hot shell 21 and atomising device 22, hot shell 21 be used for atomising device and
Flue is temporarily isolating out, and is slowly heated desulfurization wastewater fog, prevent from directly contacting due to desulfurization wastewater fog with flue gas and
Excessive temperature differentials causes to condense slagging.
Desulfurization wastewater treatment process are as follows: the desulfurization wastewater that wet desulphurization device generate after flue gas desulfurization is discharged into precipitating water
Pond, lower sediment thing enters after precipitating collecting pit dries and reprocesses after being precipitated, and upper layer desulfurization wastewater is sent to mist by water pump
Change system is atomized, and evaporates moisture in the flue gas still having surplus heat later, and particulate pollutant therein is removed using electrostatic
Dirt device carries out capture processing.Wherein atomization is the contact in order to reinforce waste water with flue gas, enables waste water rapid evaporation, thus logical
It crosses electrostatic precipitator and captures particulate pollutant therein.Atomising device and flue can be temporarily isolating by the hot shell installed additional
It opens, so that the waste water vapour of atomization will not make particulate pollutant return because of condensing slagging with flue gas excessive temperature differentials or evaporating too fast
Atomising device surface is fallen on, to block atomising device, reduces treatment effeciency.The system can be in existing desulfurization wastewater processing system
The shortcomings that carrying out simple refit on system, improving existing desulfurization wastewater processing mode has more effectively handled desulfurization wastewater, and has dropped
The low maintenance cost of desulfurization wastewater system, to improve the economic benefit of power plant.
Referring to Fig.2, waste water by water pump is discharged into atomization system to sedimentation basin at the middle and upper levels, atomization system is installed on air preheater
In flue between electrostatic precipitator, for being atomized filtered desulfurization wastewater, it is emitted into before electrostatic precipitator
In flue, remaining solid particle is removed by electrostatic precipitator after moisture vaporization.
The present invention provides a kind of desulfurization wastewater processing modes of economical and efficient.Compared to ubiquitous system now, the system
The shortcomings that improving existing desulfurization wastewater processing mode carries out primary sedimentation filtering to desulfurization wastewater before being discharged into atomization system,
The risk of bulky grain contaminants clog atomization system is reduced, and prevents the atomization system condensation vapor as caused by the temperature difference
Or evaporate too fast and particulate pollutant is made to fall back to atomising device surface, to reduce the wind that atomization system is blocked again
Danger.The improvement project reduces original desulfurization wastewater system and the problems such as behind efficiency decline is serious, and maintenance is complicated is used for a long time, effectively
Handled desulfurization wastewater, and the processing cost of desulfurization wastewater is reduced, to improve the economic benefit of power plant.
The above purport example of implementing is to describe specific implementation process of the invention, main feature and advantage.It should be pointed out that this hair
It is bright not limited by above-described embodiment.Under general principles and spirit, the improvement or retouching done are accordingly to be regarded as the present invention
Protection scope.
Claims (3)
1. a kind of desulfurizing waste water processing device applied to coal-burning power plant, including electrostatic precipitator, wet desulphurization device, water pump,
Precipitation pond, precipitating collecting pit, it is characterised in that: the burner hearth pass sequentially through economizer, air preheater, electrostatic precipitator,
Wet desulphurization device connects chimney；The wet desulphurization device lower part connects precipitating collecting pit, the air by precipitation pond
Flue between preheater and electrostatic precipitator is provided with atomization system, and the precipitation pond is connected by water pipe with water pump
Atomization system；The atomization system includes hot shell and atomising device, and atomising device connects water pipe, is equipped with heat outside atomising device
Shell is kept apart atomising device and flue by hot shell, is slowly heated desulfurization wastewater fog, is prevented due to desulfurization wastewater
Fog is directly contacted with flue gas and excessive temperature differentials causes to condense slagging.
2. the desulfurizing waste water processing device according to claim 1 applied to coal-burning power plant, it is characterised in that: the atomization
System will be atomized in the flue before filtered desulfurization wastewater is emitted into electrostatic precipitator, remaining after vaporizing moisture
Solid particle is removed by electrostatic precipitator.
3. the desulfurizing waste water processing device according to claim 1 applied to coal-burning power plant, it is characterised in that: described is wet
Desulfurization wastewater is emitted into precipitation pond and carries out stewing process by method desulfurizer, and by the precipitating disposal of pollutants in sedimentation basin to heavy
Shallow lake collecting pit, waste water by water pump is discharged into atomization system to sedimentation basin at the middle and upper levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276372.XA CN110015798A (en) | 2019-04-08 | 2019-04-08 | Desulfurizing waste water processing device applied to coal-burning power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276372.XA CN110015798A (en) | 2019-04-08 | 2019-04-08 | Desulfurizing waste water processing device applied to coal-burning power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110015798A true CN110015798A (en) | 2019-07-16 |
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| CN201910276372.XA Pending CN110015798A (en) | 2019-04-08 | 2019-04-08 | Desulfurizing waste water processing device applied to coal-burning power plant |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014129030A1 (en) * | 2013-02-25 | 2014-08-28 | 三菱重工業株式会社 | Exhaust gas treatment system and exhaust gas treatment method |
| CN104085934A (en) * | 2014-07-15 | 2014-10-08 | 重庆大学 | Method for efficiently spraying, evaporating and coring desulfurization wastewater in thermal power plant |
| CN205616699U (en) * | 2016-04-14 | 2016-10-05 | 北京博奇电力科技有限公司 | Desulfurizing tower waste water integrated treatment system of recycling |
| CN206384876U (en) * | 2016-12-27 | 2017-08-08 | 奕工晨（天津）节能环保科技发展有限公司 | The humidifier of desulfurization wastewater spray evaporation device |
| CN108529808A (en) * | 2018-06-14 | 2018-09-14 | 南京东大能源工程设计院有限公司 | A kind of desulfurization wastewater treatment system and technique |
-
2019
- 2019-04-08 CN CN201910276372.XA patent/CN110015798A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014129030A1 (en) * | 2013-02-25 | 2014-08-28 | 三菱重工業株式会社 | Exhaust gas treatment system and exhaust gas treatment method |
| CN104085934A (en) * | 2014-07-15 | 2014-10-08 | 重庆大学 | Method for efficiently spraying, evaporating and coring desulfurization wastewater in thermal power plant |
| CN205616699U (en) * | 2016-04-14 | 2016-10-05 | 北京博奇电力科技有限公司 | Desulfurizing tower waste water integrated treatment system of recycling |
| CN206384876U (en) * | 2016-12-27 | 2017-08-08 | 奕工晨（天津）节能环保科技发展有限公司 | The humidifier of desulfurization wastewater spray evaporation device |
| CN108529808A (en) * | 2018-06-14 | 2018-09-14 | 南京东大能源工程设计院有限公司 | A kind of desulfurization wastewater treatment system and technique |
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Application publication date: 20190716 |
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| RJ01 | Rejection of invention patent application after publication |