CN104722136A - Process and device for separating flue gas desulfurization gypsum slurry through self operation - Google Patents
Process and device for separating flue gas desulfurization gypsum slurry through self operation Download PDFInfo
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- CN104722136A CN104722136A CN201510122214.0A CN201510122214A CN104722136A CN 104722136 A CN104722136 A CN 104722136A CN 201510122214 A CN201510122214 A CN 201510122214A CN 104722136 A CN104722136 A CN 104722136A
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Abstract
The invention relates to solid-liquid separation of flue gas desulfurization gypsum slurry in the environmental protection industry, and in particular relates to a process and device for separating the flue gas desulfurization gypsum slurry through self operation. A gypsum slurry concentration tank is used for the primary solid-liquid separation, a filter-precipitation integrated tank is used for the secondary separation, the gypsum slurry is concentrated to 80-90% by completely utilizing the gravity action, a vacuum facility with high energy consumption and high investment, a belt conveyor and factory buildings are omitted, forklift conveying equipment is further omitted, the operation process is automatic and is free from maintenance; the filter-precipitation integrated tank is simple in structure, is the solid-separation device as well as a finished gypsum product storage facility; therefore, the field is saved, and the floor area is reduced; compared with the vacuum belt conveyor process, the process achieves the aims of low investment, self operation, energy saving, investment saving and saving of occupied place, no need of maintenance and saving of labor intensity.
Description
Technical field
The present invention relates to the Separation of Solid and Liquid of environmental protection industry (epi) desulfurated plaster slurries, specifically self-operating is separated technique and the device of desulfurated plaster slurries.
Background technology
Flue gas desulfurization is in order to scrubbing CO_2 is to the pollution of air, and lime stone (comprising lime) method sulfur removal technology is low due to cost, so be sulfur method the earliest in the world, is also adopt maximum sulfur methods at present.
Due to the technique that lime stone (comprising lime, Calcium Carbide Ash) is desulfurizing agent, be in operation and produce a large amount of gypsum (calcium sulfate) slurries, wherein moisture accounts for 85% ~ 90%, so the Separation of Solid and Liquid in gypsum slurries becomes important operation.Usually the technique adopted at present is that hydrocyclone completes in conjunction with vacuum belt machine, hydrocyclone carries out preliminary Separation of Solid and Liquid, and then dewater further by vacuum belt dewatering system, reach gypsum water content in the requirement of about 10% ~ 20%, this makes it possible to pile up or outwards transport.But traditional gypsum dehydration technology investment is large, energy consumption is high, labour intensity is large, this is because hydrocyclone needs certain flow velocity, namely high-lift pump just can realize, and needs to consume a large amount of electric energy generation vacuum in vacuum belt machine, and the operation of belt feeder also needs energy consumption.Hydrocyclone and vacuum belt machine need ceaselessly to run continuously in addition, because these mechanical facilities need people ceaselessly to operate, so also will arrange special gypsum dehydration construction of structures, not only make investment strengthen, and occupation of land and labour intensity all increase.Again owing to operationally producing solid waste incessantly, these solids need to transport place in time by auxiliary equipment such as forklifts, need ceaselessly continuous operation in 24 hours, so operation troubles rate is very high, also easily there is the phenomenon of mechanical blockage, wearing and tearing, corrosion, parking phenomenon is caused often to occur, stop onerous toils such as each time all needing cleaning, part exchanging, preheating driving, start-stop car is that people least wish to see continually, this makes environment protecting reduce, and operation and maintenance cost increases.
Summary of the invention
In order to overcome existing traditional hydrocyclone in conjunction with the large problem of vacuum belt machine technology investment, and labour intensity is large, high, easy to wear, the easy blocking of machinery and the perishable problem of consuming energy and the phenomenon of parking that causes, the invention provides technique and device that a kind of self-operating is separated desulfurated plaster slurries, reach the object reducing investment and operation and maintenance cost.
The technical solution adopted for the present invention to solve the technical problems is: utilize Action of Gravity Field precipitate voluntarily solid-liquid and be separated, first utilize Action of Gravity Field that solid-liquid is precipitated voluntarily, initial gross separation becomes supernatant and underflow liquid, and then utilize Action of Gravity Field to carry out secondary precipitation to underflow liquid, combined filtering and natural evaporation just can reach the requirement of solid content, simultaneously to supernatant carry out secondary fine segmentation from, completely replace hydrocyclone add vacuum belt dewatering system.
The present invention includes the gypsum slurries thickener that is carried out preliminary Separation of Solid and Liquid, isolated underflow liquid enters filtering-depositing one groove, filtrate collecting pit, secondary slurry feeding pump, secondary solid-liquid separation tank, lime and lime stone slurry make-up tank composition successively, it is characterized in that gypsum slurries thickener is the object utilizing Action of Gravity Field to precipitate to reach Separation of Solid and Liquid voluntarily, filtering-depositing one groove is then utilize Action of Gravity Field in conjunction with gravity filtration to complete the program of Separation of Solid and Liquid, reaches the effect that solid content is 80% ~ 90%.Underflow liquid enters filtering-depositing one groove through distribution pipes and valve.
Conically structure bottom described gypsum slurries thickener, with stirring facility slowly, cyclonic action can not only accelerate the speed precipitated, and underflow solid content can also be prevented too high and blocking pipe; Because the speed stirred is slow, so power consumption is very little.Gypsum slurries thickener plays the concentrated effect of preliminary sedimentation, and the gypsum slurries being 10% ~ 15% solid content is tentatively divided into supernatant and underflow liquid, makes underflow liquid be concentrated to solid content and reaches about 25% ~ 40%, slough moisture over half.
Described filtering-depositing one groove has the dual-use function of gravitational settling and gravity filtration, be rectangle structure, high 1500 ~ 2500mm, four perisporiums are provided with filter, one of them wall is provided with the gate that can open, and the width of gate can pass in and out forklift or haulage vehicle is as the criterion, so that external shipping products solid gypsum, be provided with overfall at a perisporium simultaneously, supernatant is here overflowed; Filtering-depositing one trench bottom is provided with stone sand drainage layer, buries porous water filtration pipe in drainage layer underground; The principle that deposit concentrates voluntarily is: at top moisture very soon by diafiltration to bottom, make top become the solid of paste, the remaining moisture in top is evaporated again, can reach the requirement of solid content 80% ~ 90%.Sedimental bottom by Action of Gravity Field, remaining moisture by stone sand drainage layer, porous water filtration pipe, filter acting in conjunction and diafiltration is discharged, filtering and concentrating voluntarily as filter press; The solid content of more than 80% just can be reached in conjunction with evaporation.Filtering-depositing one groove is made up of 3 more parallels, carries out respectively precipitating, filter, cushion and transporting outward.
Porous water filtration pipe is connected to filtrate collecting pit, is provided with automatic level controller in filtrate collecting pit, and object is the operation of automatic control pump; Secondary slurry feeding pump below.Through gypsum slurries thickener supernatant connecting secondary solid-liquid separation tank out, continue to carry out meticulous Separation of Solid and Liquid to supernatant, become the clear liquid meeting and recycle; Clear liquid enters lime and lime stone slurry make-up tank, just can be delivered to desulfurizing tower by slush pump and carry out having recycled after having prepared.
Self-operating of the present invention is separated technique and the device of desulfurated plaster slurries, gypsum slurries thickener is first order Separation of Solid and Liquid, filtering-depositing one groove is that the second level is separated, utilize Action of Gravity Field to play calcium plaster is concentrated to the effect of 80% ~ 90% completely, eliminate highly energy-consuming and vacuum facility, belt conveyor and factory building thereof with high investment, also eliminate forklift haulage equipment, running is automatically and without the need to maintenance; Filtering-depositing one groove structure is simple, it is the device of Separation of Solid and Liquid, it is again the storage facility of finished product gypsum, eliminate place so again, floor space is reduced, compared with vacuum belt machine technique, can realize investing the object of little, self-operating, energy-conservation, saving fund and occupation of land, freedom from repairs, saving labour intensity.
Accompanying drawing explanation
Fig. 1 is that self-operating of the present invention is separated the technique of desulfurated plaster slurries and the schematic diagram of device.
Reference numeral: 1. gypsum slurries thickener, 2. underflow liquid distribution duct and valve, 3. filtering-depositing one groove, 4. filter, 5. stone sand drainage layer, 6. porous water filtration pipe, 7. filtrate collecting pit, 8. automatic level controller, 9. two slurry feeding pumps, 10. two solid-liquid separation tanks, 11. lime and lime stone slurry make-up tank.
Detailed description of the invention
Embodiment is see Fig. 1, self-operating of the present invention is separated technique and the plant running of desulfurated plaster slurries: the solid content of discharging bottom desulfuration absorbing tower is 10%-15% gypsum slurries, deliver in gypsum slurries thickener (1) through delivery pump and carry out initial concentration and be separated, because the proportion of gypsum is greater than water, so gypsum slurries precipitate and separate voluntarily here, be divided into supernatant and underflow liquid, underflow fluid solid content after gypsum slurries thickener (1) reaches about 25% ~ 40%, slough more than half moisture like this, be gathered in eddy flow gypsum slurries thickener (1) bottom simultaneously, then filtering-depositing one groove (3) is entered into by underflow liquid distribution duct (2), carry out secondary precipitation and Separation of Solid and Liquid, in filtering-depositing one groove (3), gypsum slurries slowly flows, weight effect is relied on to continue precipitate and separate voluntarily, until after solid deposits gathers full filtering-depositing one groove (3), stop into underflow liquid, deposit is allowed to concentrate voluntarily and evaporation, now solid deposits continues to filter out moisture by Action of Gravity Field, make final solid content at 80%-85%, can utilize with forklift entrucking outward transport.Filtering-depositing one groove (3) is made up of 3 more parallels, carries out respectively precipitating, filter, cushion and transporting outward.Deposit in filtering-depositing one groove (3) concentrates voluntarily, simultaneously under gravity deposit by stone sand drainage layer (5), porous water filtration pipe (6), filter (4) acting in conjunction, filtering and concentrating voluntarily as filter press, just can reach the solid content of 80% ~ 90% in conjunction with evaporation.The moisture being filtered out flows automatically to filtrate collecting pit (7), is then sent back to gypsum slurries thickener (1) by secondary slurry feeding pump (9-1) and continues solid-liquid multi-cycle separation.Automatic level controller (8) in filtrate collecting pit (7) can start according to the height of liquid level or stop the work of secondary slurry feeding pump (9-1), reaches automatically and save the object of labour intensity.
The supernatant be separated from gypsum slurries thickener (1) in addition by pipeline self to secondary solid-liquid separation tank (10), carry out meticulous clarified separation further, be divided into clarified solution and turbid solution, wherein turbid solution is sent back to gypsum slurries thickener (1) by secondary slurry feeding pump (9-2), proceeds Separation of Solid and Liquid.And separated clarified solution flows automatically to lime and lime stone slurry make-up tank (11), desulfurizing tower can be delivered to delivery pump and recycle after preparation.
Claims (6)
1. self-operating is separated technique and the device of desulfurated plaster slurries, include the gypsum slurries thickener that is carried out preliminary Separation of Solid and Liquid, isolated underflow liquid enters filtering-depositing one groove, filtrate collecting pit, secondary slurry feeding pump, secondary solid-liquid separation tank, lime and lime stone slurry make-up tank composition successively, it is characterized in that gypsum slurries thickener is the object utilizing Action of Gravity Field to precipitate to reach Separation of Solid and Liquid voluntarily, filtering-depositing one groove is then utilize Action of Gravity Field in conjunction with gravity filtration to complete the program of Separation of Solid and Liquid.
2. self-operating according to claim 1 is separated technique and the device of desulfurated plaster slurries, it is characterized in that: conically structure bottom gypsum slurries thickener, with stirring facility slowly, gypsum slurries thickener plays the concentrated effect of preliminary sedimentation, the gypsum slurries being 10%-15% solid content is tentatively divided into supernatant and underflow liquid, make underflow liquid be concentrated to solid content and reach about 25%-40%, slough moisture over half.
3. self-operating according to claim 1 is separated technique and the device of desulfurated plaster slurries, it is characterized in that: filtering-depositing one groove has the dual-use function of gravitational settling and gravity filtration, be rectangle structure, high 1500-2500mm, four perisporiums are provided with filter, one of them wall is provided with the gate that can open, and the width of gate can pass in and out forklift or haulage vehicle is as the criterion, so that external shipping products solid gypsum.
4. self-operating according to claim 1 is separated technique and the device of desulfurated plaster slurries, it is characterized in that: filtering-depositing one trench bottom is provided with stone sand drainage layer, buries porous water filtration pipe in drainage layer underground.
5. self-operating according to claim 1 is separated technique and the device of desulfurated plaster slurries, it is characterized in that: filtering-depositing one groove is made up of 3 more parallels, carries out respectively precipitating, filter, cushion and transporting outward.
6. self-operating according to claim 1 is separated technique and the device of desulfurated plaster slurries, it is characterized in that: be provided with automatic level controller in filtrate collecting pit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510122214.0A CN104722136B (en) | 2015-03-12 | 2015-03-12 | The technique that self-operating separates desulfurated plaster slurries |
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| CN201510122214.0A CN104722136B (en) | 2015-03-12 | 2015-03-12 | The technique that self-operating separates desulfurated plaster slurries |
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| CN104722136B CN104722136B (en) | 2018-01-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109276947A (en) * | 2018-11-13 | 2019-01-29 | 中国北方稀土（集团）高科技股份有限公司 | The device and method being separated by solid-liquid separation in carbonated rare earth continuous production |
| CN110237667A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | Gravity separation processing coking sulphur foam produces the technique and system of sulphur slurry |
| CN114210130A (en) * | 2021-11-22 | 2022-03-22 | 中铝集团山西交口兴华科技股份有限公司 | System and method for refining lime milk |
| CN115738477A (en) * | 2022-11-17 | 2023-03-07 | 科城精铜(广州)有限公司 | Copper rod rolling emulsion circulating system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07330397A (en) * | 1994-06-02 | 1995-12-19 | Daiki Gomme Kogyo Kk | Method for dehydrating gypsum slurry of by-product from flue gas desulfurization and apparatus therefor |
| CN202237426U (en) * | 2011-09-30 | 2012-05-30 | 机械工业第三设计研究院 | Filter bed system of sludge drying tank |
| CN102631811A (en) * | 2012-04-18 | 2012-08-15 | 浙江天蓝环保技术股份有限公司 | Device and method for separating and removing impurities of carbide slag desulfurized gypsum slurry |
| CN103100258A (en) * | 2010-07-28 | 2013-05-15 | 日进教学器材(昆山)有限公司 | Sediment filter box |
| CN104310826A (en) * | 2014-10-16 | 2015-01-28 | 湖南蓝天阳工程投资管理有限公司 | Method for carrying out solid-liquid separation on high-temperature alpha gypsum slurry |
-
2015
- 2015-03-12 CN CN201510122214.0A patent/CN104722136B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07330397A (en) * | 1994-06-02 | 1995-12-19 | Daiki Gomme Kogyo Kk | Method for dehydrating gypsum slurry of by-product from flue gas desulfurization and apparatus therefor |
| CN103100258A (en) * | 2010-07-28 | 2013-05-15 | 日进教学器材(昆山)有限公司 | Sediment filter box |
| CN202237426U (en) * | 2011-09-30 | 2012-05-30 | 机械工业第三设计研究院 | Filter bed system of sludge drying tank |
| CN102631811A (en) * | 2012-04-18 | 2012-08-15 | 浙江天蓝环保技术股份有限公司 | Device and method for separating and removing impurities of carbide slag desulfurized gypsum slurry |
| CN104310826A (en) * | 2014-10-16 | 2015-01-28 | 湖南蓝天阳工程投资管理有限公司 | Method for carrying out solid-liquid separation on high-temperature alpha gypsum slurry |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109276947A (en) * | 2018-11-13 | 2019-01-29 | 中国北方稀土（集团）高科技股份有限公司 | The device and method being separated by solid-liquid separation in carbonated rare earth continuous production |
| CN110237667A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | Gravity separation processing coking sulphur foam produces the technique and system of sulphur slurry |
| CN114210130A (en) * | 2021-11-22 | 2022-03-22 | 中铝集团山西交口兴华科技股份有限公司 | System and method for refining lime milk |
| CN115738477A (en) * | 2022-11-17 | 2023-03-07 | 科城精铜(广州)有限公司 | Copper rod rolling emulsion circulating system and method |
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| CN104722136B (en) | 2018-01-05 |
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