CN87101056A - The dressing coal with dry fluidized bed method and apparatus - Google Patents
The dressing coal with dry fluidized bed method and apparatus Download PDFInfo
- Publication number
- CN87101056A CN87101056A CN87101056.9A CN87101056A CN87101056A CN 87101056 A CN87101056 A CN 87101056A CN 87101056 A CN87101056 A CN 87101056A CN 87101056 A CN87101056 A CN 87101056A
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- air
- distribution device
- coal
- bed
- fluidized bed
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- 239000003245 coal Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 238000005243 fluidization Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract 2
- 238000005192 partition Methods 0.000 claims abstract 2
- 239000004744 fabric Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 2
- 238000005267 amalgamation Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000006004 Quartz sand Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 abstract description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000010866 blackwater Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 3
- 239000004579 marble Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Abstract
The invention discloses a kind of novel dressing coal with dry fluidized bed apparatus and method.This apparatus and method are, filling one compound by designing, partition type air-distribution device [6], and adopt multistage small size air-distribution device to piece together the method for large scale air-distribution device, fluid bed is applied in the coal separation process, and, reach the sorting purposes of coal by being the size distribution percetage by weight of mixture and rationally the choosing of fluidization number of dense media to magnetite powder, quartz sand.The invention solves problems such as the water consumption that existing wet coal preparation exists is big, black water difficult treatment, and small investment, instant effect, for new way has been opened up in the sorting of water-deficient area coal.
Description
The present invention relates to a kind of dry fluidized bed sorting unit and method of novel coal separation process that fluidization is applied to.
Existing coal separation method is to adopt wet split, and this method not only can cause the pollution of residue coal slime after the washing, and water consumption is big, investment is high.Provinces such as the Shaanxi that is distributed in the severe drought lack of water more than 2/3rds of coal in China recoverable reserves, the Inner Mongol, Shanxi.Therefore wet split has also influenced the raising of these regional Coal Quality.
Task of the present invention is in order to solve the deficiency that above-mentioned existing wet split exists, with the air that passes in the fluid bed is fluidizing agent, the mixture of fluidisation magnetite powder and quartz sand is a dense media, control stable, the even fluidisation of the gas-solid system that forms fluid bed by reasonable structural design and operating parameter,, make coal be suspended in the bed differing heights by the density size within it and carry out sorting as separating medium with the dense media of this active fluidization.
Task of the present invention is finished in the following manner, air is flowed through and is entered the air-distribution device of homogenizing air-flow after the gas flow modulation measuring system, to produce the even fluidisation that the speed uniform airflow guarantees medium, the air that comes out from air-distribution device flows in the fluid bed housing, after wind speed reaches initial fluidising air velocity, the different-grain diameter raw coal is suspended to certain bed height by density level under the supporting of dense media mixture, by the layering of density size, thereby reach sorting purposes.Raw coal and dense media can be sent into by the cycle charging gear on top, and cleaned coal after the sorting and spoil are exported after removing medium apparatus by an anchor chain-scraper plate output system of packing in the sorting bed.
In addition, in air-distribution device, air flows to into pre-air compartment and slows down, all press, pass pre-air distribution plate with the low speed steady air flow, for making gas flow homogenization better, install an incompressible packed layer of forming by glass marble additional on pre-air distribution plate top, enter top again after making the air communication that passes from pre-air distribution plate cross the glass marble gap.In addition, in incompressible packed layer, increase by a component and cut plate, incompressible packed layer is divided into polylith, with the further cloth wind uniformity of improving.Air-flow passes incompressible packed layer after enter among the bed after the tissue layer of being held by the two layer screen network folder.
Choose at branch,, only adopt the fluid effect of single air-distribution device relatively poor, adopt many air-distribution devices combination method for this reason because fluid bed length is too big.Small size air-distribution device with certain size is a unit, through big air-distribution device of a longitudinal spliced synthetic Len req.
Describe below in conjunction with accompanying drawing:
Fig. 1 is that the structure master of dressing coal with dry fluidized bed device looks schematic diagram.
Fig. 2 is that the structure master of air-distribution device in the dressing coal with dry fluidized bed device (6) looks, cross-sectional schematic.
Fig. 3 is the A-A face cutaway top view of Fig. 2.
Fig. 1 hollow air-flow enters air-distribution device (6) after gas flow modulation measuring system (7), air stream is gone into fluid bed housing (3) by homogenizing is laggard, contact with raw coal and dense media mixture and with its picking-up, raw coal and dense media are sent into through the cycle charging gear (8) on fluid bed housing (3) top, and cleaned coal after the sorting and spoil are exported after removing medium apparatus (2) by the anchor chain-scraper plate output system (1) in the bed body.
Fig. 2 is that the structure master of air-distribution device among Fig. 1 (6) looks cross-sectional schematic.Air is flowed through after airduct (9) enters air compartment (10), makes air stream slow down, all press, and passes pre-air distribution plate (5), and velocity air stream passes by diameter to be the incompressible packed layer (12) that the glass marble of 4～10mm is formed, further to obtain homogenizing thereafter.For improving cloth wind homogenising, in incompressible packed layer (12), increase by a component and cut plate (11), thereby incompressible packed layer (12) is divided into polylith.
Fig. 3 is the A-A face cutaway top view of Fig. 2, wherein cuts apart plate (11) and becomes " twenty " font to cut apart incompressible packed layer (12), makes every part become the equal-volume tetragonal body.Air enters in the bed after flowing the thing layer (13) of weaving cotton cloth that passes again by two-layer screen cloth (4) clamping.
In addition, air-distribution device among Fig. 1 (6) is by adopting many combination methods, with the small size air-distribution device of 150 * 150mm through vertically being put together.
In operating process, the whether suitable of grain size proportion is to guarantee even, the stable key point of bed.By experiment, the optimal parameter of grain size proportion is Fe really
3O
4Percetage by weight 40%, particle diameter 0.15～0.30mm; SiO
2Percetage by weight 60%, particle diameter 0.24～0.48mm.In the operating process, the fluid bed floor height is 200～400mm, and fluidization number N is 1.6～2.0.
By between density level the difference 0.05g/cm
3The experiment of density ball in dry fluidized bed sorting unit, its sorting possible deviation value E
P=0.025, well below the jigging sorting of routine, approach existing wet split effect.
Chinese style fluid bed coal selector of the present invention and method, except having dry advantage, it is low also to have a cost, small investment, the advantage such as low in the pollution of the environment. Compare with the wet coal preparation factory of similar scale, investment cost reduces 2/3, and producing cost also reduces 2/3. The present invention has opened up new way for the sorting of the coal of water-deficient area and the easy argillization of chance water.
Claims (6)
1, a kind of novel dressing coal with dry fluidized bed apparatus and method, its device characteristic is: this device by anchor chain-scraper plate output system [1], remove medium apparatus [2], fluid bed housing [3], air-distribution device [6], gas flow modulation measuring system [7] and cycle charging gear [8] and form.
2, the air-distribution device (6) in the described device of claim 1, it is characterized in that: by pre-air compartment (10), air distribution plate (5), incompressible packed layer (12), cut apart plate (11) and by the tissue layer (13) of two-layer screen cloth (4) clamping form one compound, fill, the partition type air-distribution device.
3, the described air-distribution device of claim 2 (6) is characterized in that cutting apart plate (11) and becomes " twenty " font that incompressible packed layer (12) is divided into the equal-volume tetragonal body.
4, the described device air-distribution device of claim 1 (6) is characterized in that, to big length bed body, can adopt multistage air-distribution device amalgamation, 150 * 150mm small size air-distribution device is vertically pieced together the large scale air-distribution device of the big bed that needs length.
5, the described dressing coal with dry fluidized bed method of claim 1 is characterized in that: the percentage by weight number of dense media mixture and the optimum value that directly distributes are: Fe
3O
4Percetage by weight is 40%, and particle diameter is 0.15-0.3mm; SiO
2Percetage by weight is 60%, and particle diameter is 0.24-0.48mm.
6, the described dry fluidized bed method for separating of claim 1, it is characterized in that: fluidization number N is 1.6～2.0, the bed height is 200～400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87101056.9A CN1005314B (en) | 1987-05-28 | 1987-05-28 | Process and device for dressing coal with dry fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87101056.9A CN1005314B (en) | 1987-05-28 | 1987-05-28 | Process and device for dressing coal with dry fluidized bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87101056A true CN87101056A (en) | 1987-12-16 |
| CN1005314B CN1005314B (en) | 1989-10-04 |
Family
ID=4813146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87101056.9A Expired CN1005314B (en) | 1987-05-28 | 1987-05-28 | Process and device for dressing coal with dry fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005314B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392922A (en) * | 1992-10-16 | 1995-02-28 | China University Of Mining And Technology | High capacity dry separation apparatus with air-heavy medium fluidized bed |
| CN1046102C (en) * | 1993-02-15 | 1999-11-03 | 中国矿业大学 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
| CN1058203C (en) * | 1996-04-10 | 2000-11-08 | 中国矿业大学 | Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof |
| CN104148164A (en) * | 2014-07-04 | 2014-11-19 | 中国海洋石油总公司 | Method for coal washing by means of carbon dioxide |
| CN104525359A (en) * | 2014-12-30 | 2015-04-22 | 唐山市神州机械有限公司 | Dry method heavy media separator adopting dry method heavy media separation bed and separation device |
| CN105057023A (en) * | 2014-03-14 | 2015-11-18 | 衢州市易凡设计有限公司 | Dry coal dressing method |
| CN106140455A (en) * | 2016-06-28 | 2016-11-23 | 陕西陕煤黄陵矿业有限公司 | A kind of coal preparation plant's end fault continuous coal separation aid system and method |
| CN106622627A (en) * | 2017-01-14 | 2017-05-10 | 泰富重工制造有限公司 | Sand washer |
| CN107866378A (en) * | 2017-11-17 | 2018-04-03 | 华北科技学院 | The apparatus and method of coal dust and spoil powder in a kind of quick separating experiment coal sample |
| CN113514239A (en) * | 2021-06-24 | 2021-10-19 | 国家能源集团新疆能源有限责任公司 | Air distribution plate online detection method and system and storage medium |
-
1987
- 1987-05-28 CN CN87101056.9A patent/CN1005314B/en not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392922A (en) * | 1992-10-16 | 1995-02-28 | China University Of Mining And Technology | High capacity dry separation apparatus with air-heavy medium fluidized bed |
| CN1046102C (en) * | 1993-02-15 | 1999-11-03 | 中国矿业大学 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
| CN1058203C (en) * | 1996-04-10 | 2000-11-08 | 中国矿业大学 | Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof |
| CN105057023A (en) * | 2014-03-14 | 2015-11-18 | 衢州市易凡设计有限公司 | Dry coal dressing method |
| CN104148164A (en) * | 2014-07-04 | 2014-11-19 | 中国海洋石油总公司 | Method for coal washing by means of carbon dioxide |
| CN104148164B (en) * | 2014-07-04 | 2016-09-21 | 中国海洋石油总公司 | A kind of method utilizing carbon dioxide to carry out coal washing |
| CN104525359A (en) * | 2014-12-30 | 2015-04-22 | 唐山市神州机械有限公司 | Dry method heavy media separator adopting dry method heavy media separation bed and separation device |
| CN106140455A (en) * | 2016-06-28 | 2016-11-23 | 陕西陕煤黄陵矿业有限公司 | A kind of coal preparation plant's end fault continuous coal separation aid system and method |
| CN106622627A (en) * | 2017-01-14 | 2017-05-10 | 泰富重工制造有限公司 | Sand washer |
| CN106622627B (en) * | 2017-01-14 | 2019-08-23 | 泰富重工制造有限公司 | A kind of sand washer |
| CN107866378A (en) * | 2017-11-17 | 2018-04-03 | 华北科技学院 | The apparatus and method of coal dust and spoil powder in a kind of quick separating experiment coal sample |
| CN113514239A (en) * | 2021-06-24 | 2021-10-19 | 国家能源集团新疆能源有限责任公司 | Air distribution plate online detection method and system and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1005314B (en) | 1989-10-04 |
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| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
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