CN104722136B - The technique that self-operating separates desulfurated plaster slurries - Google Patents
The technique that self-operating separates desulfurated plaster slurries Download PDFInfo
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- CN104722136B CN104722136B CN201510122214.0A CN201510122214A CN104722136B CN 104722136 B CN104722136 B CN 104722136B CN 201510122214 A CN201510122214 A CN 201510122214A CN 104722136 B CN104722136 B CN 104722136B
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Abstract
The technique that self-operating separates desulfurated plaster slurries, using Action of Gravity Field be classified carry out solid-liquid voluntarily precipitation concentration with separating, combined with gypsum slurries thickener and the integral groove of filtering precipitation and played the effect for calcium plaster being concentrated to 80%~90%, highly energy-consuming and vacuum facility, belt conveyor and its factory building with high investment are eliminated, also eliminates forklift haulage equipment；The operational outfit of this art inventions is pump and slow stirrer, and running is automatic and without maintenance；It is simple that filtering precipitates integral slot structure, it is both the device of separation of solid and liquid, is the storage facility of finished product gypsum again, so eliminates part place again, compared with vacuum belt machine technique, small investment, self-operating, energy-conservation, saving fund and occupation of land, freedom from repairs, the purpose for saving labor intensity can be achieved.
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 separation desulfurated plaster slurries
Technique.
Background technology
Flue gas desulfurization is the pollution to air for scrubbing CO_2, lime stone (including lime) method sulfur removal technology due to
Cost is low, so being sulfur method earliest in the world, and uses most sulfur methods at present.
Due to the technique that lime stone (including lime, Calcium Carbide Ash) is desulfurizing agent, substantial amounts of gypsum (sulfuric acid is produced in operation
Calcium) slurries, wherein moisture accounts for 85%~90%, thus in gypsum slurries solid-liquid separation into for important process.It is logical at present
Frequently with technique be that hydrocyclone combination vacuum belt machine is completed, hydrocyclone carries out preliminary separation of solid and liquid, Ran Houzai
Further it is dehydrated with vacuum belt dewatering system, reaches gypsum water content in 10%~20% or so requirement, thus can
Enough accumulations or outwards transport.But traditional gypsum dehydration technology investment is big, high energy consumption, labor intensity are big, because water
Power cyclone needs certain flow velocity, that is, high-lift pump just to realize, and needs consumption a large amount of in vacuum belt machine
Electric energy produce vacuum, the operation of belt feeder is also required to energy consumption.Other hydrocyclone and vacuum belt machine need not stop continuously
Ground is run, because these mechanical facilities need people ceaselessly to operate, so there is provision of special gypsum dehydration construction of structures, no
Only so that investment increases, and occupation of land and labor intensity all increase.Again due to operationally producing solid waste incessantly
Thing, these solids need to be transported in time to place with auxiliary equipment such as forklifts, it is necessary to ceaselessly continuous work in 24 hours, so
Operation troubles rate is very high, and mechanical blockage, abrasion, the phenomenon of corrosion also easily occurs, and causes parking phenomenon often to occur, each time
Parking is required for the onerous toils such as cleaning, part exchanging, preheating driving, and continually to be that people are mostly undesired see for driving and parking
, this causes environment protecting to reduce, and operation and maintenance cost increases.
The content of the invention
The problem of in order to overcome existing traditional hydrocyclone combination vacuum belt machine technology investment big, and work are strong
Degree is big, power consumption is high, machinery is easy to wear, easy blocking and perishable problem and caused by the phenomenon stopped, the present invention provide it is a kind of from
The technique of operation separation desulfurated plaster slurries, reaches the purpose for reducing investment and operation and maintenance cost.
The technical solution adopted for the present invention to solve the technical problems is：Solid-liquid is voluntarily precipitated using Action of Gravity Field with dividing
From first with Action of Gravity Field so that solid-liquid voluntarily precipitates, initial gross separation turns into supernatant and underflow liquid, then recycles gravity
Effect carries out secondary precipitation to underflow liquid, and combined filtering reaches the requirement of solid content with natural evaporation can, while to supernatant
Liquid carries out secondary fine and segmented from substitution hydrocyclone completely adds vacuum belt dewatering system.
The present invention includes a gypsum slurries thickener for carrying out preliminary separation of solid and liquid, and the underflow liquid isolated entered
Filter precipitates integral groove, is filtrate collecting pit, secondary slurry feeding pump, secondary solid-liquid separation tank, lime and lime stone slurry successively
Make-up tank forms, it is characterized in that gypsum slurries thickener is voluntarily precipitated using Action of Gravity Field to reach the purpose of separation of solid and liquid,
It is then the program that separation of solid and liquid is completed using Action of Gravity Field combination gravity filtration that filtering, which precipitates integral groove, and reaching solid content is
80%~90% effect.Underflow liquid enters filtering by distribution pipes and valve and precipitates integral groove.
The gypsum slurries concentration trench bottom is in conical structure, and with slow stirring facility, cyclonic action can not only
The enough speed for accelerating precipitation, it is too high and block pipeline to be also prevented from underflow solid content；Because the speed of stirring is slow, so power consumption
Very little.Gypsum slurries thickener plays a part of preliminary sedimentation concentration, and the gypsum slurries that solid content is 10%~15% are preliminary
Supernatant and underflow liquid are divided into, underflow liquid is concentrated to solid content and reaches 25%~40% or so, slough the water of more than half
Point.
The filtering, which precipitates integral groove, has gravitational settling and the dual-use function of gravity filtration, is rectangle structure, high
1500~2500mm, four perisporiums are provided with filter, and one of wall is provided with the gate that can be opened, and the width of gate can pass in and out
Forklift or haulage vehicle are defined, and externally to transport product solid gypsum, while are provided with overfall in a perisporium, make supernatant
Liquid is gone out by overflow herein；Filtering precipitates integral trench bottom and is provided with stone sand drainage layer, and porous water filtration pipe is buried in drainage layer；It is heavy
Accumulating the principle that thing voluntarily concentrates is：At top, moisture arrives bottom by diafiltration quickly so that top turns into the solid of paste, and top remains
Remaining moisture is evaporated again, can reach the requirement of solid content 80%~90%.Action of Gravity Field is leaned in the bottom of deposit, remaining
Moisture is percolated discharge by stone sand drainage layer, porous water filtration pipe, filter collective effect, is voluntarily filtered as filter press
Concentration；More than 80% solid content can just be reached with reference to evaporation.Filtering precipitates what integral groove was made up of 3 more parallels, point
Do not precipitated, filtered, being buffered and outward transport.
Porous water filtration pipe is connected to filtrate collecting pit, and automatic level controller is provided with filtrate collecting pit, it is therefore an objective to from
The operation of dynamic controlling pump；It is followed by secondary slurry feeding pump.The supernatant connecting secondary solid-liquid come out through gypsum slurries thickener
Separating tank, continue to carry out fine separation of solid and liquid to supernatant, turn into the clear liquid for meeting and recycling；Clear liquid enters stone
Ash and lime stone slurry make-up tank, can is delivered to desulfurizing tower by slurries pump and recycle after having prepared.
The technique of the self-operating separation desulfurated plaster slurries of the present invention, it is classified progress solid-liquid using Action of Gravity Field and voluntarily precipitates
Concentrate with separating, combined to play and calcium plaster is concentrated to 80%~90% with gypsum slurries thickener and the integral groove of filtering precipitation
Effect, highly energy-consuming and vacuum facility, belt conveyor and its factory building with high investment are eliminated, also eliminates forklift haulage equipment；
The operational outfit of this art inventions is pump and slow stirrer, and running is automatic and without maintenance；Filtering precipitates integral groove knot
Structure is simple, is both the device of separation of solid and liquid, is the storage facility of finished product gypsum again, so part place is eliminated again, with vacuum
Belt feeder technique is compared, and small investment, self-operating, energy-conservation, saving fund and occupation of land, freedom from repairs can be achieved, save labor intensity
Purpose, limpid supernatant can reuse.
Brief description of the drawings
Fig. 1 is the schematic diagram of the technique of self-operating separation desulfurated plaster slurries of the present invention.
Reference：1. gypsum slurries thickener, 2. underflow liquid distribution ducts and valve, the 3. integral grooves of filtering precipitation, 4.
Filter, 5. stone sand drainage layers, 6. porous water filtration pipes, 7. filtrate collecting pits, 8. automatic level controllers, 9. 2 slurries conveyings
Pump, 10. 2 solid-liquid separation tanks, 11. lime and lime stone slurry make-up tank.
Embodiment
Embodiment separates the process operation of desulfurated plaster slurries referring to Fig. 1, self-operating of the invention：From desulfuration absorbing tower bottom
The solid content of portion's discharge is 10%-15% gypsum slurries, is pumped to through conveying in gypsum slurries thickener (1) and carries out initial concentration
With separating, because the proportion of gypsum is more than water, so gypsum slurries voluntarily precipitation separation herein, is divided into supernatant and underflow
Liquid；Underflow fluid solid content after gypsum slurries thickener (1) reaches 25%~40% or so, has so sloughed more than half water
Point, while eddy flow gypsum slurries thickener (1) bottom is gathered in, it is heavy then to enter filtering by underflow liquid distribution duct (2)
Forming sediment in integral groove (3), carry out secondary precipitation and separation of solid and liquid, precipitated in filtering in integral groove (3), gypsum slurries slowly flow,
Acted on by weight and continue voluntarily precipitation separation, after solid deposits collection gathers the integral groove (3) of filtering precipitation, stopped into dense
Slurries, deposit is allowed voluntarily to concentrate and evaporate, now solid deposits continue to filter out moisture by Action of Gravity Field so that final solid
Content can use forklift entrucking outward transport to utilize in 80%-85%.Filtering precipitates what integral groove (3) was made up of 3 more parallels,
Precipitated, filtered respectively, being buffered and outward transport.The deposit in integral groove (3) is precipitated in filtering voluntarily to concentrate, while in gravity
The lower deposit of effect by stone sand drainage layer (5), porous water filtration pipe (6), filter (4) collective effect, as filter press oneself
Row filtering and concentrating, 80%~90% solid content can be just reached with reference to evaporation.The moisture for being filtered out flows automatically to filtrate receipts
Ji Chi (7), gypsum slurries thickener (1) is then sent back to 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 or stop secondary slurries according to the height of liquid level and convey
The work of pump (9-1), reach purpose that is automatic and saving labor intensity.
Pass through pipeline self to secondary solid-liquid separation tank from the supernatant that gypsum slurries thickener (1) is separated in addition
(10) fine clarified separation, is further carried out, is divided into clarified solution and turbid solution, wherein turbid solution passes through secondary slurry feeding pump
(9-2) is sent back to gypsum slurries thickener (1), continues separation of solid and liquid.And separated clarified solution flow automatically to lime and
Lime stone slurry make-up tank (11), after preparation can be pumped to desulfurizing tower with conveying recycles.
Claims (1)
1. self-operating separates the technique of desulfurated plaster slurries, it is characterized in that：
(1) a gypsum slurries thickener for carrying out preliminary separation of solid and liquid is included, the underflow liquid isolated enters filtering and precipitated
Integral groove, it is filtrate collecting pit, secondary slurry feeding pump, secondary solid-liquid separation tank, lime and lime stone slurry make-up tank successively
Composition, it is characterized in that gypsum slurries thickener is voluntarily precipitated using Action of Gravity Field to reach the purpose of separation of solid and liquid, filtering is sunk
The integral groove that forms sediment is then the program that separation of solid and liquid is completed using Action of Gravity Field combination gravity filtration；
(2) gypsum slurries concentration trench bottom is in conical structure, and with slow stirring facility, gypsum slurries thickener plays just
The effect of precipitation concentration is walked, the gypsum slurries that solid content is 10%-15% are tentatively divided into supernatant and underflow liquid, make underflow
Liquid is concentrated to solid content and reaches 25%-40%, sloughs the moisture of more than half；
(3) filtering, which precipitates integral groove, has gravitational settling and the dual-use function of gravity filtration, is rectangle structure, high 1500-
2500mm, four perisporiums are provided with filter, and one of wall is provided with the gate that can be opened, the width of gate can pass in and out forklift or
Person's haulage vehicle is defined, externally to transport product solid gypsum；
(4) filtering precipitates integral trench bottom and is provided with stone sand drainage layer, and porous water filtration pipe is buried in drainage layer；
(5) filtering precipitates what integral groove was made up of 3 more parallels, is precipitated, filtered respectively, buffered and outward transport；
(6) it is provided with automatic level controller in filtrate collecting pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN104722136A CN104722136A (en) | 2015-06-24 |
| CN104722136B true CN104722136B (en) | 2018-01-05 |
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| CN201510122214.0A Expired - Fee Related CN104722136B (en) | 2015-03-12 | 2015-03-12 | The technique that self-operating separates desulfurated plaster slurries |
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| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2857975B2 (en) * | 1994-06-02 | 1999-02-17 | 大機エンジニアリング株式会社 | Dewatering method and dewatering device for flue gas desulfurization by-product gypsum slurry |
| CN103100258B (en) * | 2010-07-28 | 2014-08-20 | 日进教学器材(昆山)有限公司 | Sediment filter box |
| CN104310826B (en) * | 2014-10-16 | 2016-09-07 | 湖南昌迅科技环保股份有限公司 | A kind of solid-liquid separating method of α gypsum high temperature slurries |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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