CN102343207A - Flue gas desulfurization waste water taking mode of wet process treatment system - Google Patents
Flue gas desulfurization waste water taking mode of wet process treatment system Download PDFInfo
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- CN102343207A CN102343207A CN2011102845244A CN201110284524A CN102343207A CN 102343207 A CN102343207 A CN 102343207A CN 2011102845244 A CN2011102845244 A CN 2011102845244A CN 201110284524 A CN201110284524 A CN 201110284524A CN 102343207 A CN102343207 A CN 102343207A
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Abstract
The invention discloses a flue gas desulfurization waste water taking mode of a wet process treatment system, which comprises the steps of: enabling flue gas desulfurization waste water to a waste water buffer box through a communicating pipe from a filtrate receiving tank to a filtrate water tank, and enabling overflow of a gypsum swirler to directly enter the filtrate water tank without passing through a buffer box of the gypsum swirler. A waste water swirler feeding pump, a gypsum overflow buffer box stirrer and the waste water swirler exit the wet process treatment system without operating. By adopting the flue gas desulfurization waste water taking mode disclosed by the invention, the solid content of waste water of the waste water treatment system can be reduced, equipment loads of a waste water chemical adding system, a clarifying concentrator, a filter press and the like are lightened, and the equipment reliability of the waste water treatment system is provided.
Description
Technical field
The present invention relates to the environment protection desulphurization field, relate in particular to wet process of FGD Waste Water Treatment water intaking pattern.
Background technology
In the wet method fume desulfurizing system, the main purpose of discharge of wastewater keeps intrasystem Cl exactly
-Concentration is a stable scope.In the process of flue gas washing desulphurization in getting into the absorption tower, the HCl that contains in the flue gas also is desulfurized agent and absorbs in the desulphurization system, and along with the continuous operation of desulfurization, the HCl of absorption will get more and more, i.e. Cl in the slurries
-Concentration is more and more higher, works as Cl
-Concentration arrives certain limit and untimely these is contained high concentration Cl
-Slurries when discharging, and contain high concentration Cl
-The equipment of slurries contacts will be by Cl
-Corrosion influences security of system stable operation.So, as long as will have Cl in the desulphurization system concurrently
-The slurries that concentration content is high, solid content is low are discharged system, not only can arrive the purpose of discharge of wastewater but also improve the running environment of Waste Water Treatment.
Yet, in the traditional wet flue gas desulphurization system, the overflow of the equal value gypsum of the former water of Waste Water Treatment cyclone, though through the further separate solid particles of waste-water vortex device, its waste water solid content is still more than 5%.If system's fluctuation of service, or after the equipment long-time running wearing and tearing, the waste water solid content can reach more than 10%.The waste water solid content is too high, and not only the medicine system chemical consumption is big, and clarification concentrator and sludge press filtration machine load also increase, and sludge press filtration machine overload operation causes equipment fault to take place frequently, and the availability of Waste Water Treatment reduces.Simultaneously, waste water is in the high solids operation, has not only increased the repair and maintenance workload, and the output of mud the like waste also increases, and is also big to the consumption of the energy.
Therefore, be necessary to provide the lower waste water of a kind of solid content to overcome above-mentioned defective.In wet method fume desulfurizing system, the waste water solid content is less than 1% in the filtrating pans, and wet process of FGD waste water can be taken to the filtrating receiving tank, no longer adopts gypsum overflow baffle-box and waste-water vortex device pattern.Waste-water vortex device feed pump, gypsum overflow baffle-box and waste-water vortex device log off, and do not rerun.
Summary of the invention
The purpose of this invention is to provide a kind of wet process of FGD Waste Water Treatment water intaking pattern; Its abandoning tradition waste-water vortex device and feed pump, gypsum overflow baffle-box agitator, technology is simple, and can improve the availability of Waste Water Treatment; Reduce the workload of field device maintenance, cut down the consumption of energy.
To achieve these goals, the invention provides a kind of wet process of FGD Waste Water Treatment water intaking pattern, be used for reducing Waste Water Treatment wastewater solids granule density.Said flue gas desulfurization waste-water was taken on the communicating pipe of filtrating receiving tank to filtrate water box, inserted Y-type three way type on communicating pipe, and Y-type three way type first arm inserts filtrate water box, and second arm inserts the waste water baffle-box, and the overflow of gypsum cyclone directly inserts filtrate water box.
Preferably, the waste water flow velocity is no more than 1 meter per second in said first arm and second arm, can reduce gravity flow waste water flow resistance in the pipeline like this, guarantees that gravity flow is smooth and easy.
Preferably, square being directly proportional of wastewater flow and branch diameter in said each arm like this, can tentatively distribute in each pipeline wastewater flow big or small through branch diameter.
Preferably, the said first arm center line, the said second arm center line and horizontal line angle should be not less than 15 degree, can avoid like this stopping up in pipeline because of waste water contains solid particle.
Preferably; Said first arm should insert below the filtrate water box minimum liquid level; Second arm of telling should insert below the waste water baffle-box minimum liquid level; Pipe bottom surface 450-550mm at the bottom of each case; Like this; To guarantee that not because of liquid level in the casing is too low air gets into the vacuum belt machine system in arm, and causes vacuum belt machine vacuum to be destroyed.
Preferably; Said waste water baffle-box arranges that height should be lower than said filtrating receiving tank; The highest operation liquid level of said waste water baffle-box and said filtrating receiving tank minimum operation liquid level difference should be not less than 5 meters, to guarantee vacuum filtrating receiving tank sufficiently high height liquid seal are arranged.
Compared with prior art; The present invention is through inserting the Y-type three way type arm from the communicating pipe of filtrating receiving tank to filtrate water box; The waste water that gets into Waste Water Treatment is taken to vacuum belt machine filtrating; The waste water solid content that gets into Waste Water Treatment significantly reduces; When the concentration of solid particles of this waste water normally moves less than 1%; Even the belt feeder chain cloth performance descends, the solid content of its filtrating is also in 3%.After Waste Water Treatment waste water solid content reduces, at first being to have alleviated medicine system and clarification concentrator load, secondly is mud compressor operating cycle lengthening, and operating frequency descends.Because the easy fault of mud compressor apparatus, and maintenance workload is bigger behind the each run, and maintenance is difficulty also, so the present invention can significantly reduce manual work and remove on-site maintenance equipment.The present invention directly inserts filtrate water box through the overflow of gypsum cyclone, no longer through waste-water vortex device baffle-box.Waste-water vortex device feed pump, gypsum overflow baffle-box agitator and waste-water vortex device log off; Do not rerun, thereby, plant maintenance work can be reduced; Improve system reliability, and practice thrift the energy consumption of gypsum overflow baffle-box agitator and gypsum overflow baffle-box delivery pump.
Through following description and combine accompanying drawing, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the sketch map of wet process of FGD Waste Water Treatment water intaking pattern of the present invention.
Fig. 2 is a wet process of FGD Waste Water Treatment water intake conduit instance scheme of installation one of the present invention.
Fig. 3 is a wet process of FGD Waste Water Treatment water intake conduit instance scheme of installation two of the present invention.
Heavy line is new system running pattern among Fig. 1, and dotted line is the conventional mode of operation that withdraws from new system.
The specific embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.
As shown in Figure 1, flue gas desulfurization waste-water of the present invention was taken on the communicating pipe 3 of filtrating receiving tank 1 to filtrate water box 2, inserted Y-type three way type 4 on communicating pipe 3, and Y-type three way type 4 first arms 5 insert filtrate water box 2, the second arms 6 and insert waste water baffle-box 7.Gypsum cyclone overflow 8 directly inserts filtrate water box 2, no longer through waste-water vortex device baffle-box.Waste-water vortex device feed pump, gypsum overflow baffle-box agitator and waste-water vortex device log off, and do not rerun.
As shown in Figure 2; Y-type three way type 4 is responsible for filtrating pans down-comer 3 and is communicated with; First arm 5 inserts filtrate water box 2; Second arm 6 inserts waste water baffle-box 7; First arm, 5 center lines and horizontal line angle are 90 degree; The second arm center line 6 is 15 degree with the horizontal line angle, all satisfies the requirement that prevents waste water endoparticle thing deposition blocking pipe.In this instance, first arm, 5 calibers are DN150, and second arm, 6 calibers are DN80, the caliber ratio square be 3.5, but be 3.5 than rough estimate promptly through wastewater flows in first arm 5 and second arm 6.Because of Cl in the waste water
-Concentration content is higher, and for preventing corrosive pipeline, Y-type three way type 4, first arm 5, second arm 6 must adopt corrosion-proof wear-resistant materials, like alloy pipeline, rubber lining pipeline or FRPP pipeline etc.
As shown in Figure 3, should be lower than minimum design liquid level in the case at the bottom of inserting second arm, 6 pipes in the waste water baffle-box, pipe end height at the bottom of the case is 0.5 meter.All be provided with agitator 9 in the waste water baffle-box, big in order to prevent the liquid disturbance, second arm 6 fractures because of cantilever is oversize, is provided with guiding trestle 10 on second arm 6.And the part that second arm 6 inserts in the waste water baffle-box 7 for preventing the waste water corrosion, must adopt alloy pipeline, inside and outside rubber-lined pipe road or FRPP pipeline etc.
As stated; The present invention is through inserting the Y-type three way type arm from the communicating pipe of filtrating receiving tank to filtrate water box; The waste water that gets into Waste Water Treatment is taken to vacuum belt machine filtrating; The waste water solid content that gets into Waste Water Treatment significantly reduces, when the concentration of solid particles of this waste water normally moves less than 1%.After Waste Water Treatment waste water solid content reduces, at first being to have alleviated medicine system and clarification concentrator load, secondly is mud compressor operating cycle lengthening, and operating frequency descends.Because the easy fault of mud compressor apparatus, and maintenance workload is bigger behind the each run, and maintenance is difficulty also, so the present invention can significantly reduce manual work and remove on-site maintenance equipment.The present invention directly inserts filtrate water box through the overflow of gypsum cyclone, no longer through waste-water vortex device baffle-box.Waste-water vortex device feed pump, gypsum overflow baffle-box agitator and waste-water vortex device log off; Do not rerun, thereby, plant maintenance work can be reduced; Improve system reliability, and practice thrift the energy consumption of gypsum overflow baffle-box agitator and gypsum overflow baffle-box delivery pump.
Invention has been described more than to combine most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (5)
1. wet process of FGD Waste Water Treatment water intaking pattern; It is characterized in that: flue gas desulfurization waste-water was taken on the communicating pipe of filtrating receiving tank to filtrate water box; Insert Y-type three way type on communicating pipe; Y-type three way type first arm inserts filtrate water box; Second arm inserts the waste water baffle-box, and the overflow of gypsum cyclone directly inserts filtrate water box.
2. a kind of wet process of FGD Waste Water Treatment water intaking pattern as claimed in claim 1 is characterized in that the waste water flow velocity is no more than 1 meter per second in said first arm and second arm, square being directly proportional of the interior wastewater flow of each arm and branch diameter.
3. a kind of wet process of FGD Waste Water Treatment water intaking pattern as claimed in claim 1, it is characterized in that: the said first arm center line, the said second arm center line and horizontal line angle are not less than 15 degree.
4. a kind of wet process of FGD Waste Water Treatment water intaking pattern as claimed in claim 1; It is characterized in that; Said first arm should insert below the filtrate water box minimum liquid level, and second arm of telling should insert below the waste water baffle-box minimum liquid level, pipe bottom surface 450-550mm at the bottom of each case.
5. a kind of wet process of FGD Waste Water Treatment water intaking pattern as claimed in claim 1; It is characterized in that; Said waste water baffle-box arranges that height should be lower than said filtrating receiving tank, and the highest operation liquid level of said waste water baffle-box and said filtrating receiving tank minimum operation liquid level difference should be not less than 5 meters.
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| CN2011102845244A CN102343207A (en) | 2011-09-23 | 2011-09-23 | Flue gas desulfurization waste water taking mode of wet process treatment system |
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| CN2011102845244A CN102343207A (en) | 2011-09-23 | 2011-09-23 | Flue gas desulfurization waste water taking mode of wet process treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351066A (en) * | 2013-07-22 | 2013-10-16 | 中国大唐集团环境技术有限公司 | Novel wet flue gas desulfurization wastewater treatment method and system |
| CN103480262A (en) * | 2013-10-14 | 2014-01-01 | 中国计量学院 | Wastewater supply process for wet-process smoke desulfurization wastewater treatment system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762883A (en) * | 1995-08-03 | 1998-06-09 | Mitsubishi Jukogyo Kabushiki Kaisha | Wet flue gas desulfurization apparatus |
| JP2002191934A (en) * | 2000-12-25 | 2002-07-10 | Ishikawajima Harima Heavy Ind Co Ltd | Wet flue-gas desulfurization facility |
| CN101185830A (en) * | 2007-09-10 | 2008-05-28 | 成都信息工程学院 | Limestone-gypsum method flue gas desulfurization technique without serum producing system |
| CN201223771Y (en) * | 2008-07-14 | 2009-04-22 | 北京至清时光环保工程技术有限公司 | Double-loop vertical spray wet-desulfurization technique system |
-
2011
- 2011-09-23 CN CN2011102845244A patent/CN102343207A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762883A (en) * | 1995-08-03 | 1998-06-09 | Mitsubishi Jukogyo Kabushiki Kaisha | Wet flue gas desulfurization apparatus |
| JP2002191934A (en) * | 2000-12-25 | 2002-07-10 | Ishikawajima Harima Heavy Ind Co Ltd | Wet flue-gas desulfurization facility |
| CN101185830A (en) * | 2007-09-10 | 2008-05-28 | 成都信息工程学院 | Limestone-gypsum method flue gas desulfurization technique without serum producing system |
| CN201223771Y (en) * | 2008-07-14 | 2009-04-22 | 北京至清时光环保工程技术有限公司 | Double-loop vertical spray wet-desulfurization technique system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103351066A (en) * | 2013-07-22 | 2013-10-16 | 中国大唐集团环境技术有限公司 | Novel wet flue gas desulfurization wastewater treatment method and system |
| CN103480262A (en) * | 2013-10-14 | 2014-01-01 | 中国计量学院 | Wastewater supply process for wet-process smoke desulfurization wastewater treatment system |
| CN103480262B (en) * | 2013-10-14 | 2016-04-27 | 中国计量学院 | Wet flue gas desulfurization waste water treatment system waste water supply technique |
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Owner name: WUHAN GUANGGU ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: WUHAN DONGHU GAOXIN GROUP CORP., LTD. Effective date: 20120203 |
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Effective date of registration: 20120203 Address after: 430074 No. 1, Jiayuan Road, East Lake Development Zone, Hubei, Wuhan Applicant after: Wuhan Guanggu Environmental Protection Technology Co.,Ltd. Address before: 430074, No. 1, Jiayuan Road, East Lake New Technology Development Zone, Wuhan, Hubei Applicant before: Wuhan Donghu Gaoxin Group Corp., Ltd. |
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Application publication date: 20120208 |