CN202170277U - Improved desulfurization wastewater treatment system - Google Patents
Improved desulfurization wastewater treatment system Download PDFInfo
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- CN202170277U CN202170277U CN2011203141183U CN201120314118U CN202170277U CN 202170277 U CN202170277 U CN 202170277U CN 2011203141183 U CN2011203141183 U CN 2011203141183U CN 201120314118 U CN201120314118 U CN 201120314118U CN 202170277 U CN202170277 U CN 202170277U
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Abstract
The utility model relates to an improved desulfurization wastewater treatment system which comprises a gypsum cyclone. The upper end outlet of the gypsum cyclone is divided into two branches, one branch is connected with an absorption tower, and the other branch is connected with a triple box, a clear concentration basin and a clean water basin sequentially. The lower end outlet of the clear concentration basin is connected with a dehydrator; the lower end outlet of the gypsum cyclone is connected with a vacuum dehydrator and a filtrate water tank sequentially; the upper end outlet of the gypsum cyclone is also connected with the vacuum dehydrator; the lower end outlet of the clear concentration basin is connected with the vacuum dehydrator through a first pump; and the outlet of the filtrate water tank is connected with the inlet of the triple box through a second pump and a pressure gauge. The system operates stably, the blocking of the triple box and the clear concentration basin are avoided, the content of solid impurities of the slurry in the absorption tower is obviously reduced, the dehydration of gypsum is normal, and the system is especially applicable to the coal fired power plants.
Description
Technical field
The utility model belongs to the desulfurization wastewater processing technology field, is specifically related to a kind of follow-on desulfurization wastewater treatment system.
Background technology
The electric structure of China is main with thermoelectricity.The fuel-burning power plant also is the sulfur dioxide emissions rich and influential family, and in order to reduce a large amount of dischargings of sulfurous gas, the coal-fired unit of most domestic has been installed FGD unit at present; And with the limestone-gypsum wet desulfurizing process is main; Promptly in the absorption tower, add a large amount of Wingdales and come absorbing sulfur dioxide, both react and generate gypsum calcium sulfate, thereby reach the purpose of removing sulfurous gas; Slurries in the absorption tower contain a large amount of gypsum solid simultaneously, need carry out follow-up purification separation and handle.
Desulfurizer generally comprises absorption tower and desulfurization wastewater treatment system.Because of absorbing constantly concentrating of gaseous pollutant such as hydrogenchloride, hydrogen fluoride in the flue gas and slurries, the various ionic concns in the absorption tower constantly raise; This external cause Wingdale contains a certain amount of impurity and the absorption tower captures reasons such as part flue dust, also can contain a certain amount of solid impurity in the absorption tower.Along with the carrying out of desulphurization reaction, ionic concn in the absorption tower and solid impurity content constantly raise, thereby desulphurization system is produced unfavorable must the influence.For the operation that guarantees that desulfurizer is continuous, stable, need to discharge certain slurry to keep the balance of each material in the absorption tower, the slurry of discharge is kept continuous, the stable operation of whole desulfurizer through follow-up processing again.
After absorption tower density reached certain value, need were discharged tower outward to keep the continuous operation of system with the gypsum slurry that contains in the absorption tower, and the discharge of desulfurization wastewater is mainly carried out during gypsum dehydration.Traditional desulfurization wastewater discharge and the treatment system technical process as shown in Figure 1: from the absorption tower discharge contain gypsum slurries (being the absorption tower slurries) and get into gypsum swirler-1 after; An overflow slurry part that exports out from gypsum swirler-1 upper end is back in the absorption tower, and another part gets into becomes desulfurization wastewater after rough purification is handled in three headers 2.Three headers 2 are three placed in-line successively one-piece boxs; First case is regulated pH to 9～10 through adding alkali lye; Second case adds organosulfur to be reacted heavy metal ion in the waste water etc. to settle down; Remove heavy metal ion, add a certain amount of coagulant aids and flocculation agent in the 3rd case, with so that in the waste water suspended impurity flocculate into macrobead.The desulfurization wastewater that obtains through three headers, 2 purifying treatment gets into clarification concentration basin 3 further standing sedimentations again; Suspended impurity in the waste water flocculates into macrobead and is deposited in concentration basin 3 bottoms with the form of mud; The upper strata clear water that standing separation is come out in the clarification concentration basin 3 is overflow to clean water basin 4 then, regulate pH to 6～9 backs with hydrochloric acid and discharge from clean water basin 4 bottoms.The then outlet discharge from the lower end of the material-mud that clarification concentration basin 3 bottoms settle down obtains desuifurized after sheet frame water extracter 5 (also can use centrifuge) dehydration.And effusive heavy sizing liquid obtains filtrating and gypsum offscum after vacuum hydroextractor 6 processed from gypsum swirler-1 bottom, and filtrating gets into filtrate water box 7, and filter residue effluxes.
Yet in the gypsum dehydration process of reality, along with the continuous increase of serum density in the desulfuration absorbing tower, the particle diameter of solid particulate is also in continuous conversion in the tower.And life-time service gypsum overboard pump and gypsum rotational flow device cause machine constantly to wear and tear, and its separating effect is also descending gradually.This external cause gypsum particle density is big, quality heavy, and its precipitation threshold is strong, and in the desulfurization wastewater treatment process, three headers stop up serious problem ubiquity.Add in the desulfurization wastewater processing and generally adopt sheet frame or centrifuge, its failure rate is high, treatment capacity is on the low side, has had a strong impact on the normal operation of desulfurization facility.For this reason, each power plant tries every means and handles desulfurization wastewater, drags for the slag meter, is used as flyash damping etc. as desulfurization wastewater being introduced boiler, but all have certain problem.Therefore overcome the defective that prior art exists, research can desulfurization wastewater treatment system normal, efficient operation have great importance.
The utility model content
The utility model purpose is to overcome the prior art defective, and a kind of follow-on desulfurization wastewater treatment system is provided.
To achieve these goals, the utility model adopts following technical scheme:
A kind of follow-on desulfurization wastewater treatment system comprises the gypsum swirler-, and the outlet of gypsum swirler-upper end is divided into two branch roads; A branch road connects the absorption tower; Another branch road connects three headers, clarification concentration basin and clean water basin successively, and the lower end outlet of clarification concentration basin connects water extracter, and the outlet of gypsum cyclone lower end connects vacuum hydroextractor and filtrate water box successively; Wherein, said gypsum swirler-upper end outlet also links to each other with vacuum hydroextractor; The outlet of said clarification concentration basin lower end is connected with vacuum hydroextractor through first pump; Said filtrate water box outlet is connected with three header imports through second pump, tensimeter.
Preferably, said first pump is connected with vacuum hydroextractor through first valve, and the pipeline between first pump and first valve is provided with the first water inlet branch road; Said tensimeter is connected with three header imports through second valve, and the pipeline between second valve and the three header imports is provided with the second water inlet branch road.
The advantage of the said desulfurization wastewater treatment system of the utility model mainly is:
(1) increases an outlet in gypsum swirler-upper end and be connected directly to vacuum hydroextractor, strengthen the quantity discharged of gypsum swirler-upper end overflow (being desulfurization wastewater), with the solid content in the indirect alleviation absorption tower.
(2) after the vacuum hydroextractor solid-liquid separation; Filtrating is introduced in the filtrate water box; In filtrate water box, handle filtrating introducing three headers again, can remove fluorine, chlorine plasma in the filtrating, low because of the filtrating solid content simultaneously; Filtrating can also be diluted the concentration that gets into slurry in three headers from the direct overflow of swirler-, avoids three headers to stop up.
(3) increase a branch road; Make the part slurry of clarification concentration basin bottom change vacuum hydroextractor over to; Utilize the filtration of suction and the gypsum filter cake layer of vacuum pump to realize the solid-liquid separation of mud; To alleviate the load of water extracter, reduce the failure rate of water extracter, for moving normally, continuously, efficiently, whole desulfurization wastewater treatment facility provides safeguard.
(4) on the pipeline between the pipeline between filtrate water box and three headers, the outlet of clarification concentration basin and the vacuum hydroextractor, increase the manual regulation valve, in order to regulate the flow of slurries; And increase the wash-down water branch road accordingly, and after finishing, pipeline is washed when the slurries conveying, guaranteed the cleaning of transport pipe.
Description of drawingsFig. 1 is the structural representation of former desulfurization wastewater treatment system;
Fig. 2 is the structural representation of the said modified version desulfurization wastewater of the utility model treatment system.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained further details, but the protection domain of the utility model is not limited thereto.
As shown in Figure 2; A kind of follow-on desulfurization wastewater treatment system comprises gypsum swirler-1, and the outlet of gypsum swirler-1 upper end is divided into two branch roads; A branch road connects absorption tower (so that being back in the absorption tower from the effusive part overflow slurry of gypsum swirler-upper end outlet); Another branch road connects three headers 2, clarification concentration basin 3 and clean water basin 4 successively, and the 3 lower ends outlet of clarification concentration basin connects water extracter 5, and the outlet of gypsum swirler-1 lower end connects vacuum hydroextractor 6 and filtrate water box 7 successively; Wherein, said gypsum swirler-1 upper end outlet also links to each other with vacuum hydroextractor 6; Said clarification concentration basin 3 lower ends outlets is connected with vacuum hydroextractor 6 through first pump 12, first valve 14 successively; 7 outlets of said filtrate water box are connected with 2 imports of three headers through second pump 8, tensimeter 9, second valve 10 successively.Pipeline between first pump 12 and first valve 14 is provided with the first water inlet branch road, these route the 3rd valve 13 control water inlets; Pipeline between second valve 10 and 2 imports of three headers is provided with the second water inlet branch road, these route the 3rd valve 11 control water inlets.
The a large amount of gypseous absorption tower slurries that the self-absorption tower is discharged are introduced in the gypsum swirler-1, export effusive overflow slurry from gypsum swirler-1 upper end then and are divided into three branch roads, and a part of overflow slurry is back in the absorption tower; Part overflow slurry then directly gets into three headers 2 and carries out rough purification and be treated as desulfurization wastewater; Effusive underflow slurries get into vacuum hydroextractor 6 and carry out solid-liquid separation another part overflow slurry together then with from gypsum swirler-1 lower end; The solid-liquid separation rear filtrate carries out purifying treatment in filtrate water box 7 flows into three headers 2 again, also the slurries in three headers are played diluting effect simultaneously.The desulfurization wastewater that purifying treatment obtains in three headers 2 gets into standing sedimentation in the clarification concentration basin 3; Suspended impurity in the waste water flocculates into macrobead and is deposited in clarification concentration basin 3 bottoms with the form of mud; The upper strata clear water that standing separation is come out in the clarification concentration basin 3 is overflow to clean water basin 4 then, regulate pH to 6～9 backs with hydrochloric acid and discharge from clean water basin 4 bottoms.The then outlet discharge from the lower end of the material-mud that clarification concentration basin 3 bottoms settle down obtains waste residue after 5 dehydrations of sheet frame water extracter.When slurries carry finish after, through open first valve 11,13 pairs of corresponding pipelines of the 3rd valve wash, and have guaranteed the cleaning of transport pipe.
This modified version desulfurization wastewater treatment system is stable, is not prone to three headers and clarification concentration basin latch up phenomenon, and entoplasm liquid-solid body foreign matter content in absorption tower obviously reduces, and gypsum dehydration is normal, and the gypsum quality does not have considerable change, is particularly useful for the coal-burning power plant.
Claims (2)
1. a follow-on desulfurization wastewater treatment system comprises the gypsum swirler-, and the outlet of gypsum swirler-upper end is divided into two branch roads; A branch road connects the absorption tower; Another branch road connects three headers, clarification concentration basin and clean water basin successively, and the lower end outlet of clarification concentration basin connects water extracter, and the outlet of gypsum cyclone lower end connects vacuum hydroextractor and filtrate water box successively; It is characterized in that the upper end outlet of said gypsum swirler-also links to each other with vacuum hydroextractor; The outlet of said clarification concentration basin lower end is connected with vacuum hydroextractor through first pump; Said filtrate water box outlet is connected with three header imports through second pump, tensimeter.
2. follow-on according to claim 1 desulfurization wastewater treatment system is characterized in that, said first pump is connected with vacuum hydroextractor through first valve, and the pipeline between first pump and first valve is provided with the first water inlet branch road; Said tensimeter is connected with three header imports through second valve, and the pipeline between second valve and the three header imports is provided with the second water inlet branch road.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203141183U CN202170277U (en) | 2011-08-24 | 2011-08-24 | Improved desulfurization wastewater treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203141183U CN202170277U (en) | 2011-08-24 | 2011-08-24 | Improved desulfurization wastewater treatment system |
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| CN202170277U true CN202170277U (en) | 2012-03-21 |
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Cited By (9)
| 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 |
| CN104071863A (en) * | 2014-06-06 | 2014-10-01 | 广东红海湾发电有限公司 | Method and system for optimizing desulfurization wastewater source |
| CN104926008A (en) * | 2014-03-18 | 2015-09-23 | 王辛平 | Wet desulfurization wastewater zero emission process and device thereof |
| CN105540898A (en) * | 2016-02-01 | 2016-05-04 | 浙江天地环保工程有限公司 | Ultra-low drainage wet type electric dedusting wastewater concentrated liquid treatment system |
| CN105617863A (en) * | 2015-12-28 | 2016-06-01 | 安徽理工大学 | Method for desulfurized slurry dechlorination |
| CN105854410A (en) * | 2016-06-23 | 2016-08-17 | 亿川科技(成都)有限责任公司 | Desulfurization wastewater treatment system and process thereof |
| CN109437627A (en) * | 2018-12-26 | 2019-03-08 | 北京国电龙源环保工程有限公司 | A kind of gypsum dehydration system of simplification |
| WO2022032866A1 (en) * | 2020-08-14 | 2022-02-17 | 西安西热锅炉环保工程有限公司 | Desulfurization wastewater zero discharge treatment method and system suitable for multiple working conditions |
-
2011
- 2011-08-24 CN CN2011203141183U patent/CN202170277U/en not_active Expired - Lifetime
Cited By (11)
| 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 |
| CN104926008A (en) * | 2014-03-18 | 2015-09-23 | 王辛平 | Wet desulfurization wastewater zero emission process and device thereof |
| CN104071863A (en) * | 2014-06-06 | 2014-10-01 | 广东红海湾发电有限公司 | Method and system for optimizing desulfurization wastewater source |
| CN105617863A (en) * | 2015-12-28 | 2016-06-01 | 安徽理工大学 | Method for desulfurized slurry dechlorination |
| CN105540898A (en) * | 2016-02-01 | 2016-05-04 | 浙江天地环保工程有限公司 | Ultra-low drainage wet type electric dedusting wastewater concentrated liquid treatment system |
| CN105854410A (en) * | 2016-06-23 | 2016-08-17 | 亿川科技(成都)有限责任公司 | Desulfurization wastewater treatment system and process thereof |
| CN109437627A (en) * | 2018-12-26 | 2019-03-08 | 北京国电龙源环保工程有限公司 | A kind of gypsum dehydration system of simplification |
| CN109437627B (en) * | 2018-12-26 | 2023-12-19 | 国能龙源环保有限公司 | Simplified gypsum dewatering system |
| WO2022032866A1 (en) * | 2020-08-14 | 2022-02-17 | 西安西热锅炉环保工程有限公司 | Desulfurization wastewater zero discharge treatment method and system suitable for multiple working conditions |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ELECTRIC POWER RESEARCH INSTITUTE OF Free format text: FORMER OWNER: HENAN INSTITUTE OF POWER EXPERIMENT Effective date: 20121121 Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121121 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 450008 ZHENGZHOU, HENAN PROVINCE TO: 450052 ZHENGZHOU, HENAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20121121 Address after: 450052 Songshan South Road, Henan, No. 85, No. Patentee after: HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee after: State Grid Corporation of China Address before: 450008 Songshan South Road, Henan, No. 85, No. Patentee before: HENAN ELECTRIC POWER Research Institute |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 450052 Songshan, Zhengzhou, Henan District No. 27 South Road, No. 85 Patentee after: STATE GRID HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee after: State Grid Corporation of China Address before: 450052 Songshan South Road, Henan, No. 85, No. Patentee before: Henan Electric Power Corporation Electric Power Science Research Institute Patentee before: State Grid Corporation of China |
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| TR01 | Transfer of patent right |
Effective date of registration: 20161214 Address after: 450052 Songshan, Zhengzhou, Henan District No. 27 South Road, No. 85 Patentee after: STATE GRID HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee after: HENAN ENPAI HIGH-TECH GROUP Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 450052 Songshan, Zhengzhou, Henan District No. 27 South Road, No. 85 Patentee before: STATE GRID HENAN ELECTRIC POWER CORPORATION ELECTRIC POWER SCIENCE Research Institute Patentee before: State Grid Corporation of China |
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| CX01 | Expiry of patent term |
Granted publication date: 20120321 |
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| CX01 | Expiry of patent term |