CN109013315A - A kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and method - Google Patents
A kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and method Download PDFInfo
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- CN109013315A CN109013315A CN201811245770.7A CN201811245770A CN109013315A CN 109013315 A CN109013315 A CN 109013315A CN 201811245770 A CN201811245770 A CN 201811245770A CN 109013315 A CN109013315 A CN 109013315A
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- fluidized bed
- gas
- bed body
- air
- back taper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of conical distribution plate structural formula gas-solid fluidized bed for separation device and methods, belong to coal dry cleaning technical field.Device by place vertically fluidized bed body, be located at fluidized bed top pan feeding and medium supplement chute, setting wheel and be located at air chamber, gas distribution grid, air inlet pipe and the baiting valve of bed body lower part and constitute, the gas distribution grid is placed in air chamber as back taper.It is passed through compressed air to the air chamber of fluidized bed body lower part by air inlet pipe, compressed air enters from the gas air distribution plate of ∨ word back taper, boundling upward vertical movement, uniformly the cloth wind into fluidized bed body, makes the intracorporal medium fluidisation of fluidized bed, forms stabilization fluid environment；The cleaned coal and the spoil after sorting that raw coal obtains upgrading in fluidized bed body under the action of fluidizing agent.Its structure is simple, easy to use, can be effectively reduced because fluidized bed internal gas, which is unevenly distributed, causes the problems such as generating hole, channel and dead bed inside bed, is suitable for promoting the use of.
Description
Technical field
The present invention relates to a kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and methods, are particularly suitable for western part
The dry separation of water-deficient area coal is also applied for the dry separation of the industries such as the energy, chemical industry, material.
Background technique
2/3rds of coal in China recoverable reserves are distributed in western drought and water-scarce area, study efficient dry coal preparation
Technology is key to the deep processing of coal resources in China and using playing the role of.Coal sorted using gas-solid fluidized bed
In the process, gas gas coming through distribution grid pushes solid phase medium solid to be formed with quasi-fluid property, the gas-solid with certain density
Fluidized bed.Therefore, distribution device in gas-fluid is the important component of fluidized bed, and the uniformity of gas distribution is that influence is gas-solid fluidized
The key factor of gas-particle two-phase mixed flow in bed, and then influence separating effect.Conventional fluidization bed porous gas distribution grid according to
Fluidized bed body shape is horizontally disposed, and gas fluid capacitance is easily assembled at bed center, and the variation of granule density is concentrated mainly in bed body
Heart district domain, so that the mixing of gas-particle two-phase is influenced close to bed body wall surface position region dead angle easy to form and stagnant area, thus
Influence sharpness of separation.Therefore a kind of gas distribution that wall effect can be overcome to improve particle fluidization characteristic in a fluidized bed is developed
Plate is particularly important.
Summary of the invention
Technical problem: the invention aims to overcome shortcoming in the prior art, provide that a kind of structure is simple, behaviour
Make convenient, good separation effect conical distribution plate structural formula gas-solid fluidized bed for separation device and method.
Technical solution: a kind of conical distribution plate structural formula gas-solid fluidized bed for separation sorting unit of the invention, including it is vertical
The fluidized bed body of setting, the lower part of the fluidized bed body are equipped with gas distribution grid, air chamber and air inlet pipe in ∨ word back taper,
Air chamber is connected by bolt with fluidized bed body, and air inlet pipe connection air blower is communicated with air chamber, and the top of fluidized bed body is set
There are the pan feeding chute for being located at two sides, overflow outlet and the setting wheel positioned at overflow outlet nozzle, setting wheel to pass through bolt
It is connected with overflow outlet, discharge refuse mouth is equipped at the base cone of the gas distribution grid in ∨ word back taper, is set at discharge refuse mouth
There is baiting valve.
The cone angle of the gas distribution grid of the ∨ word back taper is 100 °~140 °.
The circular hole that percent opening is 25% -30% is evenly distributed on the gas distribution grid of the ∨ word back taper.
A kind of gas-solid fluidized bed method for separating of conical distribution plate structural formula using upper described device, includes the following steps:
Step 1: feeding in fluidized bed body using 3-0.074mm magnetic iron ore as medium through pan feeding chute, pass through air inlet pipe
It is passed through compressed air to the air chamber of fluidized bed body lower part, compressed air enters from the gas air distribution plate of ∨ word back taper, boundling
Upward vertical movement, uniformly the cloth wind into fluidized bed body, makes the intracorporal medium fluidisation of fluidized bed, and form stabilization fluid environment；
Step 2: the raw coal of -50+5mm is fed in fluidized bed body through pan feeding chute, raw coal is in fluidized bed body through flowing
It under the action of changing medium, is separated by density stratification, the cleaned coal of floating is scraped through overflow outlet into cleaned coal under the action of setting wheel
Storehouse, the spoil of sinking is from bottom discharge valve outlet discontinuous discharge to waste bin, the cleaned coal and the cash after sorting for finally obtaining upgrading
Stone.
The utility model has the advantages that the present invention can effectively overcome hole, channel and dead bed etc. in conventional fluidization bed assorting room to cause to flow
Change the bad problem of bed stability, finally realizes preferable separating effect.It has the advantage that compared with prior art
1) rationally, structure is simple for the present apparatus and method for separating design, easy to operate, invests, sorting essence low with operating cost
The features such as high is spent, the sorting upgrading for coal (the especially coal of water-deficient area) provides an approach；
2) compare the gas distribution grid of conventional structure, and tapered gas distribution grid of the present invention can make gas boundling vertical
It moves upwards, so that fluidized wind is more evenly distributed.Bed material distribution is light in middle heavy side in the structure bed body simultaneously, is more advantageous to
Circulation of the air-flow in side wall region effectively pushes in fluidized bed body or so inferior horn dead zone to weaken the contention effect of side wall
The generation for the problems such as movement of grain overcomes wall effect, reduces hole, channel and dead bed, to improve the sorting of fluidized bed
Performance；
3) conical distribution plate structural formula gas-solid fluidized bed for separation device and method is applied, the stability of fluidized bed is improved
Can, sorting particle size range has been widened, fine grain back-mixing and mispairing are reduced, to be conducive to sorting of the particle in bed；
4) dispensing valve of present apparatus discharge port be operate intermittently, withdrawal rate can be effectively controlled, prevent hypostasis accumulation to point
It is interfered caused by choosing and cloth wind, while can reach the purpose for reducing dielectric loss；
5) row such as it is suitable for the dry separation of western water-deficient area coal, and applies also for the energy, chemical industry, material
Industry.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of conical distribution plate structural formula gas-solid fluidized bed for separation of the present invention.
Fig. 2 is the left view structural representation of Fig. 1.
Fig. 3 is the overlooking structure diagram of Fig. 1.
In figure: 1-pan feeding chute；2-setting wheels；3-fluidized bed bodies；4-gas distribution grids；5-baiting valves；6-into
Tracheae；7-air chambers；8- overflow outlet.
Specific embodiment
The invention will be further described for embodiment in reference to the accompanying drawing:
As shown in Figure 1, conical distribution plate structural formula gas-solid fluidized bed for separation sorting unit of the invention, mainly by fluidized bed
Body 3, gas distribution grid 4 and air chamber 7 are constituted, and the fluidized bed body 3 is vertically arranged, and it is in ∨ that the lower part of fluidized bed body 3, which is equipped with,
Gas distribution grid 4, air chamber 7 and the air inlet pipe 6 of word back taper, air chamber 7 are connected by bolt with fluidized bed body 3, air inlet
Pipe 6 connects air blower and communicates with air chamber 7, and gas distribution grid 4 is connected with air chamber 7 and fluidized bed body 3 respectively by bolt,
The cone angle of the gas distribution grid 4 of the ∨ word back taper is 100 °~140 °, uniform cloth on the gas distribution grid 4 of ∨ word back taper
Having percent opening is 25% -30% circular hole.Air inlet pipe 6 is communicated with air chamber 7, and the top of fluidized bed body 3, which is equipped with, is located at two
Pan feeding chute 1, overflow outlet and the setting wheel 2 positioned at overflow outlet nozzle of side, pan feeding chute 1 and overflow outlet 8 are equal
It is connected in fluidized bed body 3 by welding, overflow outlet 8 is bolted in setting wheel 2, and described is in ∨ word back taper
It is equipped with discharge refuse mouth at the base cone of the gas distribution grid 4 of shape, is equipped with baiting valve 5 at discharge refuse mouth.
The gas-solid fluidized bed method for separating of conical distribution plate structural formula of the invention, the specific steps are as follows:
Step 1: feeding in fluidized bed body 3 using 3-0.074mm magnetic iron ore as medium through pan feeding chute 1, pass through air inlet
Pipe 6 is passed through compressed air to the air chamber 7 of 3 lower part of fluidized bed body, compressed air from the gas air distribution plate 4 of ∨ word back taper into
Enter, boundling upward vertical movement, uniformly the cloth wind into fluidized bed body 3, air-flow is after 4 even distributing wind of back taper gas distribution grid
Into media particle bed, gas-particle two-phase is made to have an effect, being formed has the gas-solid fluidized bed of quasi-fluid property；Due to gas penetration
Ability is strong, can weaken the contention effect of 3 side wall of fluidized bed body, makes being more evenly distributed for fluidized wind, promotes gas and medium solid
The mixing of grain, so that the expansion rate of bed is improved, so that the intracorporal medium of fluidized bed fluidizes to form stable Dual-Phrase Distribution of Gas olid
Change bed, fluidized bed is effectively reduced and causes generation hole, channel and dead bed etc. inside bed to ask because internal gas is unevenly distributed
Topic forms stabilization fluid environment；
Step 2: the raw coal of -50+5mm is fed in fluidized bed body 3 through pan feeding chute 1, raw coal is in fluidized bed body 3
It under the action of fluidizing agent, is separated by density stratification, the cleaned coal of floating is scraped under the action of setting wheel 2 through overflow outlet
Enter cleaned coal storehouse, the spoil of sinking exports discontinuous discharge to waste bin from bottom discharge valve 5, finally obtains cleaned coal and the sorting of upgrading
Spoil afterwards.
Claims (4)
1. a kind of conical distribution plate structural formula gas-solid fluidized bed for separation sorting unit, it is characterised in that: it includes being vertically arranged
Fluidized bed body (3), the lower part of the fluidized bed body (3) be equipped in the gas distribution grid (4) of ∨ word back taper, air chamber (7) and
Air inlet pipe (6), air chamber (7) are connected by bolt with fluidized bed body (3), and air inlet pipe (6) connects air blower and air chamber (7)
It communicates, the top of fluidized bed body (3) is equipped with the pan feeding chute (1) for being located at two sides, overflow outlet (8) and goes out positioned at overflow
The setting wheel (2) of mouth nozzle, setting wheel (2) are connected by bolt with overflow outlet (8), the gas in ∨ word back taper
It is equipped with discharge refuse mouth at the base cone of body distribution grid (4), is equipped with baiting valve (5) at discharge refuse mouth.
2. the hardened structure gas-solid fluidized bed for separation device of a kind of conical distribution according to claim 1, which is characterized in that described
The cone angle of the gas distribution grid (4) of ∨ word back taper is 100 °~140 °.
3. the hardened structure gas-solid fluidized bed for separation device of a kind of conical distribution according to claim 1, which is characterized in that described
The circular hole that percent opening is 25% -30% is evenly distributed on the gas distribution grid (4) of ∨ word back taper.
4. a kind of gas-solid fluidized bed method for separating of conical distribution plate structural formula using claim 1 described device, feature exist
In including the following steps:
Step 1: feeding in fluidized bed body (3) using 3-0.074mm magnetic iron ore as medium through pan feeding chute (1), pass through air inlet
It manages (6) and is passed through compressed air, gas cloth wind of the compressed air from ∨ word back taper to the air chamber (7) of fluidized bed body (3) lower part
Plate (4) enters, and boundling upward vertical movement fluidizes the medium in fluidized bed body (3) uniformly to the interior cloth wind of fluidized bed body (3),
And form stabilization fluid environment；
Step 2: the raw coal of -50+5mm is fed in fluidized bed body (3) through pan feeding chute (1), raw coal is in fluidized bed body (3)
It is interior through fluidizing agent under the action of, separated by density stratification, the cleaned coal of floating exports under the action of setting wheel (2) through overflow
It manages (8) and enters cleaned coal storehouse, the spoil of sinking finally obtains upgrading from bottom discharge valve (5) outlet discontinuous discharge to waste bin
Spoil after cleaned coal and sorting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811245770.7A CN109013315A (en) | 2018-10-24 | 2018-10-24 | A kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and method |
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| CN201811245770.7A CN109013315A (en) | 2018-10-24 | 2018-10-24 | A kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038796A (en) * | 2019-04-30 | 2019-07-23 | 中国矿业大学 | A kind of step variable orifice diameter cloth general mood consolidates fluidized bed for separation device and method |
| CN110586311A (en) * | 2019-10-24 | 2019-12-20 | 中国矿业大学 | Fine coal sound field fluidized bed separation method and device |
| CN110605177A (en) * | 2019-10-24 | 2019-12-24 | 中国矿业大学 | Differential gas-solid separation vibrating fluidized bed coal separation device and method |
| CN111701853A (en) * | 2020-06-23 | 2020-09-25 | 新奥科技发展有限公司 | Fine powder separation device and chemical chain coal gasification system and method |
| CN115069550A (en) * | 2022-06-17 | 2022-09-20 | 盐津津玺商贸有限责任公司 | Dry powder sand grain dust collector |
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| CN1935349A (en) * | 2005-09-23 | 2007-03-28 | 中国石油大学(北京) | Gas-solid fluidized coupling equipment and coupling method for particle mixing-classifying by utilizing same |
| CN101402063A (en) * | 2008-11-04 | 2009-04-08 | 中国矿业大学(北京) | Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof |
| CN101590471A (en) * | 2009-06-21 | 2009-12-02 | 中国矿业大学 | A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method |
| CN103047932A (en) * | 2012-12-18 | 2013-04-17 | 中国矿业大学 | Device and method for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
| CN108465563A (en) * | 2017-02-23 | 2018-08-31 | 中国石油化工股份有限公司 | Solid material dry separation device and method |
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Patent Citations (5)
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| CN1935349A (en) * | 2005-09-23 | 2007-03-28 | 中国石油大学(北京) | Gas-solid fluidized coupling equipment and coupling method for particle mixing-classifying by utilizing same |
| CN101402063A (en) * | 2008-11-04 | 2009-04-08 | 中国矿业大学(北京) | Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof |
| CN101590471A (en) * | 2009-06-21 | 2009-12-02 | 中国矿业大学 | A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method |
| CN103047932A (en) * | 2012-12-18 | 2013-04-17 | 中国矿业大学 | Device and method for measuring size and movement speed of bubbles in concentrated phase gas-solid fluidized bed |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038796A (en) * | 2019-04-30 | 2019-07-23 | 中国矿业大学 | A kind of step variable orifice diameter cloth general mood consolidates fluidized bed for separation device and method |
| CN110586311A (en) * | 2019-10-24 | 2019-12-20 | 中国矿业大学 | Fine coal sound field fluidized bed separation method and device |
| CN110605177A (en) * | 2019-10-24 | 2019-12-24 | 中国矿业大学 | Differential gas-solid separation vibrating fluidized bed coal separation device and method |
| CN110586311B (en) * | 2019-10-24 | 2021-11-26 | 中国矿业大学 | Fine coal sound field fluidized bed separation method and device |
| CN111701853A (en) * | 2020-06-23 | 2020-09-25 | 新奥科技发展有限公司 | Fine powder separation device and chemical chain coal gasification system and method |
| CN115069550A (en) * | 2022-06-17 | 2022-09-20 | 盐津津玺商贸有限责任公司 | Dry powder sand grain dust collector |
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