CN106237708A - A kind of Coal Preparation Plant coal slime dewatering system and method - Google Patents
A kind of Coal Preparation Plant coal slime dewatering system and method Download PDFInfo
- Publication number
- CN106237708A CN106237708A CN201610843713.3A CN201610843713A CN106237708A CN 106237708 A CN106237708 A CN 106237708A CN 201610843713 A CN201610843713 A CN 201610843713A CN 106237708 A CN106237708 A CN 106237708A
- Authority
- CN
- China
- Prior art keywords
- coal slime
- coal
- thickener
- export
- bucket
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of Coal Preparation Plant coal slime dewatering system and method, this system includes: sieve bend, thickener, Pulp pump, coal slime bucket, screen bowl centrifuge and filter press；Sieve bend oversize collecting terminal and thickener underflow merging are connected to the first coal slime bucket, make one section of dehydration pan feeding through mixing bulk processing；Using Sedimentation centrifugel to complete one section of dehydration, its filtrate is from flowing to the second coal slime bucket, and the second coal slime bucket is connected to filter press to complete two-stage nitration dehydration through pump；Sieve bend backwater, Sedimentation centrifugel centrifugal liquid and filter press filtrate are back to thickener.This system and method gives full play to the advantageous feature of each dehydration equipment, improves dehydrating effect and the response rate of Sedimentation centrifugel, improves dewatering efficiency, and effectively reduces the moisture of coal slime product.
Description
Technical field
The present invention relates to a kind of coal preparation plant production system, particularly relate to a kind of Coal Preparation Plant coal slime combined dehydration system
System.
Background technology
The high-efficiency dehydration of coal slime is the matter of utmost importance that must solve in slime water treatment.Existing Coal Preparation Plant coal slime one
As do not carry out flotation, but directly carry out dehydration and reclaim, use typical one section and concentrate one section and reclaim slime water treatment work
Skill, there is more shortcoming, mainly black water and reclaims the equipment either filter press in operation, pressure filtration
All there is advantage or weak point in machine, Sedimentation centrifugel, vacuum filter.The major advantage of filter press is to adapt to energy
Power is strong, and shortcoming is that treating capacity is little can not continuous pulp discharge and working continuously.Pressing filter, the major advantage of vacuum filter are can
To work continuously, but pressing filter bad adaptability, and to fine slime poor processing effect, filter liquor concentration is high, and vacuum filters
Machine is little so moisture of coal fines high because of pressure differential, and equally exists the situation that filter liquor concentration is high.Sedimentation centrifugel takes off in coal slime
The most gradually receiving extensive concern in water, and be applied in two sections of process techniques concentrating two-stage recovery, two sections concentrate two sections
During recovery Sedimentation centrifugel processing < during the higher material of 45 μm content, always there will be the problem that the response rate is low,
Too much fine enters in the thickening of second segment, increases the process load of second segment, causes coal slime dewatering system
System job insecurity, inefficient, cause recirculated water the purest, have influence on the stability of the whole production system of coal preparation plant.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of Coal Preparation Plant coal slime
Dewatering system, improves coal slime dewatering efficiency, energy efficient further, improves the disposal ability of slurry circulating system.
Technical scheme: for achieving the above object, technical scheme is as follows:
A kind of Coal Preparation Plant coal slime dewatering system, including sieve bend, thickener, the first Pulp pump, the first coal slime bucket,
Sedimentation centrifugel, the second coal slime bucket, the second Pulp pump and plate and frame filter, described thickener includes two ports of export, its
In a port of export be circulating water outlet end, another port of export and the first Pulp pump connect；Described sieve bend includes that two go out
Mouth end, one of them port of export is connected with thickener, and another port of export and the first Pulp pump are flowed to the first coal slime bucket；Described
First coal slime bucket is connected with Sedimentation centrifugel, and described Sedimentation centrifugel includes three ports of export, and wherein first goes out
Mouth end is connected with thickener, and second port of export and the second coal slime bucket connect；Described second coal slime bucket and the second Pulp pump connect,
Described second Pulp pump is connected with filter press；Described filter press includes two ports of export, one of them port of export with
Thickener connects, and another port of export confluxes with the 3rd port of export of described Sedimentation centrifugel.
Further, the feeding end of described sieve bend connects the separation of coarse slime equipment of coal preparation plant's production system.
Further, the arc chord angle scope of described sieve bend regulates between 45 °～75 °.
Further, the feeding end of described thickener is connected with black water feed end.
Beneficial effect: the present invention uses Sedimentation centrifugel and filter press combined dehydration, the product in sieve bend
The pan feeding of Sedimentation centrifugel is mixed slightly, it is possible to be effectively improved dewatering efficiency and the response rate of Sedimentation centrifugel,
The filtrate of Sedimentation centrifugel is mainly fine granule material, uses filter press processed to have the strongest being suitable for
Property.This system gives full play to the advantageous feature of each dehydration equipment, improves the disposal ability of slime water system, effectively reduces coal
The moisture of mud product, and it is high to have efficiency, the advantage that energy consumption is low.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As shown in Figure 1, a kind of Coal Preparation Plant coal slime dewatering system, including sieve bend 1, thickener the 2, first slurry
Pump the 3, first coal slime bucket 4, Sedimentation centrifugel the 5, second coal slime bucket the 6, second Pulp pump 7 and plate and frame filter 8.Described arc
The feeding end of shape sieve 1 connects the separation of coarse slime equipment of coal preparation plant's production system, and described sieve bend 1 takes off for the pre-of coarse slime
Water.The feeding end of described thickener 2 is connected with black water feed end.Described thickener 2 includes two ports of export, and one of them goes out
Mouth end is circulating water outlet end, and another port of export and the first Pulp pump 3 connect；Described sieve bend 1 includes two ports of export, its
In a port of export be connected with thickener 2, another port of export and the first Pulp pump 3 are flowed to the first coal slime bucket 4；Described first
Coal slime bucket 4 is connected with Sedimentation centrifugel 5, and described Sedimentation centrifugel 5 includes three ports of export, wherein primary outlets
End is connected with thickener 2, and second port of export and the second coal slime bucket 6 connect；Described second coal slime bucket 6 and the second Pulp pump 7 are even
Connecing, described second Pulp pump 7 is connected with filter press 8；Described filter press 8 includes two ports of export, and one of them goes out
Mouth end is connected with thickener 2, and another port of export confluxes with the 3rd port of export of described Sedimentation centrifugel 5.
Sieve bend 1 oversize collecting terminal and thickener 2 underflow merge and are connected to the first coal slime bucket 4, make one section be dehydrated into
Material is through mixing bulk processing；Using Sedimentation centrifugel 5 to complete one section of dehydration, its filtrate is from flowing to the second coal slime bucket 6, the second coal
Mud bucket 6 is connected to filter press 8 to complete two-stage nitration dehydration through the second Pulp pump 7；Sieve bend 1 backwater, sedimentation filtration are centrifugal
Machine 5 centrifugal liquid and filter press 8 filtrate are back to thickener.This system gives full play to the advantageous feature of each dehydration equipment, carries
The dehydrating effect of high Sedimentation centrifugel and the response rate, improve dewatering efficiency, and effectively reduce the water of coal slime product
Point.
The arc chord angle of described sieve bend (1) is adjustable, to adapt to the dehydration demand of whole dewatering system, and can be at model
Enclose and regulate between 45 °～75 °, require to accept or reject the overall rate of water loss of regulation and dehydration rate, arc chord angle in systems according to dehydration
Be 60 ° optimal.
During work, being passed through black water in the feeding end of thickener 2, black water splits into after thickener 2 concentrates and follows
Black water after ring water and concentration, wherein, recirculated water is discharged through circulating water outlet end, the black water after concentration and sieve bend 1
In be sieving through coarse slime mixing after sequentially enter the first coal slime bucket 4 and Sedimentation centrifugel 5, from Sedimentation centrifugel 5
In be diverted filtrate, centrifugal liquid and dehydrating prods, respectively enter thickener the 2, second coal slime bucket 6 and filter press 8, wherein
Enter into centrifugal liquid in the second coal slime bucket 6 to continue to be passed through the second Pulp pump 7 and filter press 8 successively, eventually pass sheet frame pressure
In distributing in filter cake and Sedimentation centrifugel 5 that filter 8 filter pressing becomes, dehydrating prods out is merged into final cleaned coal and produces
Product.Another port of export of filter press 8 filtrate out converges into thickener 2.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a Coal Preparation Plant coal slime dewatering system, it is characterised in that: include sieve bend (1), thickener (2), the first slag
Stock pump (3), the first coal slime bucket (4), Sedimentation centrifugel (5), the second coal slime bucket (6), the second Pulp pump (7) and plate and frame filter
Machine (8), described thickener (2) includes two ports of export, and one of them port of export is circulating water outlet end, another port of export with
First Pulp pump (3) connects；Described sieve bend (1) includes that two ports of export, one of them port of export are connected with thickener (2),
Another port of export and the first Pulp pump (3) are flowed to the first coal slime bucket (4)；Described first coal slime bucket (4) and sedimentation filtration from
Scheming (5) connects, and described Sedimentation centrifugel (5) includes three ports of export, and wherein primary outlet end is with thickener (2) even
Connecing, second port of export and the second coal slime bucket (6) connect；Described second coal slime bucket (6) is connected with the second Pulp pump (7), described
Second Pulp pump (7) is connected with filter press (8)；Described filter press (8) includes two ports of export, one of them outlet
End is connected with thickener (2), and another port of export confluxes with the 3rd port of export of described Sedimentation centrifugel (5).
A kind of Coal Preparation Plant coal slime dewatering system, it is characterised in that: described sieve bend
(1) feeding end connects the separation of coarse slime equipment of coal preparation plant's production system.
A kind of Coal Preparation Plant coal slime dewatering system, it is characterised in that: described sieve bend
(1) arc chord angle scope regulates between 45 °～75 °.
A kind of Coal Preparation Plant coal slime dewatering system, it is characterised in that: described thickener (2)
Feeding end be connected with black water feed end.
5. the method for work of a Coal Preparation Plant coal slime dewatering system, it is characterised in that:
Being passed through black water in the feeding end of thickener (2), black water splits into recirculated water with dense after thickener (2) concentrates
Black water after contracting；
Recirculated water is discharged through circulating water outlet end, and the black water after concentration mixes with the coarse slime being sieving through in sieve bend (1)
After sequentially enter the first coal slime bucket (4) and Sedimentation centrifugel (5), be diverted from Sedimentation centrifugel (5) filtrate,
Centrifugal liquid and dehydrating prods, respectively enter thickener (2), the second coal slime bucket (6) and filter press (8)；
Enter into centrifugal liquid in the second coal slime bucket (6) to continue to be passed through the second Pulp pump (7) and filter press (8) successively, finally
In distributing in filter cake and the Sedimentation centrifugel (5) that filter press (8) filter pressing becomes, dehydrating prods out closes
And become final head coal product；
Filter press (8) another port of export filtrate out converges into thickener (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843713.3A CN106237708A (en) | 2016-09-23 | 2016-09-23 | A kind of Coal Preparation Plant coal slime dewatering system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843713.3A CN106237708A (en) | 2016-09-23 | 2016-09-23 | A kind of Coal Preparation Plant coal slime dewatering system and method |
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| CN106237708A true CN106237708A (en) | 2016-12-21 |
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Family Applications (1)
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| CN201610843713.3A Pending CN106237708A (en) | 2016-09-23 | 2016-09-23 | A kind of Coal Preparation Plant coal slime dewatering system and method |
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| CN (1) | CN106237708A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109908653A (en) * | 2017-12-12 | 2019-06-21 | 上海第二工业大学 | A kind of mining area coal slime concentrates dehydration and impurity removed system |
| CN111298960A (en) * | 2020-04-16 | 2020-06-19 | 平顶山天安煤业股份有限公司八矿选煤厂 | Echelon reduction process for flotation tailing coal slime |
| CN113599867A (en) * | 2021-08-25 | 2021-11-05 | 北京科技大学 | Micro-fine particle viscous material filter-pressing dehydration process detection control device and method |
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| JP3783227B2 (en) * | 2000-02-02 | 2006-06-07 | 株式会社大林組 | How to treat dredged mud |
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| CN1948434A (en) * | 2006-11-10 | 2007-04-18 | 张春林 | Two stage dewatering technology of fine coal mud |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109908653A (en) * | 2017-12-12 | 2019-06-21 | 上海第二工业大学 | A kind of mining area coal slime concentrates dehydration and impurity removed system |
| CN111298960A (en) * | 2020-04-16 | 2020-06-19 | 平顶山天安煤业股份有限公司八矿选煤厂 | Echelon reduction process for flotation tailing coal slime |
| CN111298960B (en) * | 2020-04-16 | 2022-01-28 | 平顶山天安煤业股份有限公司八矿选煤厂 | Echelon reduction process for flotation tailing coal slime |
| CN113599867A (en) * | 2021-08-25 | 2021-11-05 | 北京科技大学 | Micro-fine particle viscous material filter-pressing dehydration process detection control device and method |
| CN113599867B (en) * | 2021-08-25 | 2022-08-12 | 北京科技大学 | Micro-fine particle viscous material filter-pressing dehydration process detection control device and method |
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Application publication date: 20161221 |