CN102519223A - Wide size distributed material dehumidifying pretreatment device - Google Patents
Wide size distributed material dehumidifying pretreatment device Download PDFInfo
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- CN102519223A CN102519223A CN2011104446215A CN201110444621A CN102519223A CN 102519223 A CN102519223 A CN 102519223A CN 2011104446215 A CN2011104446215 A CN 2011104446215A CN 201110444621 A CN201110444621 A CN 201110444621A CN 102519223 A CN102519223 A CN 102519223A
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- 239000000463 material Substances 0.000 title claims abstract description 85
- 238000007791 dehumidification Methods 0.000 claims abstract description 45
- 239000002245 particle Substances 0.000 claims abstract description 32
- 238000009826 distribution Methods 0.000 claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims description 50
- 238000007599 discharging Methods 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 238000005192 partition Methods 0.000 abstract 3
- 238000013341 scale-up Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 14
- 239000008187 granular material Substances 0.000 description 14
- 238000013016 damping Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 239000011343 solid material Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
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Abstract
本发明公开了一种宽粒度分布物料脱湿预处理装置，其包括相互连通的下部移动床段、上部气流输送床段、位于下部移动床段与上部气流输送床段连接处一侧的流化床段，在流化床段出料端设有高度可调节的流化床竖向隔板，流化床竖向隔板的上方形成流化床段为上部气流输送床段供料的通道，流化床竖向隔板的下方形成流化床段为下部移动床段供料的通道，上部气流输送床段的顶部出口连接有气固分离器，气固分离器下部设有小粒径物料出料口，移动床段的下部设有大粒径物料出料口。本发明可将湿物料按粒度和湿度快速分开处理、再快速脱湿、并使不同物料脱湿效果稳定可控，而且可解决气流床和移动床在工业化放大中存在的均匀进料、布料难题。
The invention discloses a dehumidification pretreatment device for materials with wide particle size distribution, which comprises a lower moving bed section connected to each other, an upper air-flow conveying bed section, and a fluidizer located on one side of the connection between the lower moving bed section and the upper air-flow conveying bed section. In the bed section, a height-adjustable vertical partition of the fluidized bed is provided at the discharge end of the fluidized bed section. Above the vertical partition of the fluidized bed, a channel for the fluidized bed section to feed the upper airflow conveying the bed section is formed. Below the vertical partition of the fluidized bed, a fluidized bed section is formed to feed the lower moving bed section. The top outlet of the upper airflow conveying bed section is connected to a gas-solid separator, and the lower part of the gas-solid separator is equipped with small particle size materials. Outlet, the lower part of the moving bed section is provided with a large particle size material outlet. The invention can quickly separate and process wet materials according to particle size and humidity, and then quickly dehumidify, and make the dehumidification effect of different materials stable and controllable, and can solve the problems of uniform feeding and distribution of air-flow bed and moving bed in the industrial scale-up .
Description
Technical field
The present invention relates to utilize hot blast medium such as flue gas that solid material is carried out the device of dehumidification and pneumatic classification, be specifically related to a kind of wide size distribution material dehumidification pretreatment unit, belong to solid material dehydration dehumidifying preconditioning technique field.
Background technology
Solid material classification and dehumidification are preconditioning techniques important in the process industrial, and in processes such as coal burning, destructive distillation and gasification, coal is crossed high-moisture and can be reduced production efficiency, increase energy consumption.For example; In the coal process of coking, the moisture of shove charge coal has preferable comprehensive benefit when 6-9wt.%, but the water content of actual clean fine coal is generally greater than 10%; If directly shove charge coking; Evaporate its moisture and will consume a large amount of high-grade heat (from the coke-stove gas combustion chamber), prolong the coking time, cause huge energy waste, reduce production capacity.And in the coal fired power generation process, too high like the moisture of coal, can reduce coal-fired calorific value, reduce generating efficiency.Therefore, coal is carried out the dehumidification preliminary treatment help enhancing productivity and energy utilization rate, help the energy-saving and emission-reduction consumption reduction.But simultaneously,, the water content of coal is often had minimum requirements again according to different purposes, low excessively water content may transportation, deposit or processing, use in cause difficulty.Therefore, the dehumidification of coal is needed as requested, reach an amount of appropriateness, be stabilized in a certain interval range.
The humidity of wide size distribution material has a great difference between the particle that different grain size distributes, the more little water content of granularity is high more, so its water content mainly concentrates in the small-particle coal.And varigrained coal, its dehumidification dynamics is also inequality, carries out dehumidification when handling for the wet coal of wide size distribution; Should take all factors into consideration the water capacity and the dehumidification characteristic of different grain size coal; Take corresponding dehumidification process, could reach stable, an amount of appropriate dehumidification effect as requested.But dehumidification equipment such as present conventional moving bed, fluidized bed type or entrained flow type are not considered the influence of the humidity and the dehumidification characteristic of different-grain diameter; All mix dehumidification; Cause the dehumidification amount to be difficult to control easily; Or a part crosses dehumidification and another part dehumidification is not enough, influences production stability.And; Air flow bed or moving bed dryer be difficult for uniform distribution when industry is amplified, cause short circuit and influence the dehumidification effect, and large and small particle diameter material discharging respectively after the damping mixes inhomogeneous; Therefore there are charging, cloth, discharging aspect technical bottleneck, limited unit production capacity.
CN200972313Y relates to the solid adverse current conduction of a kind of interior hot gas dehumidifying device; This dehumidifying device contains the horizontal cylindrical tube body; Be installed in blast pipe, discharging opening on the horizontal cylindrical tube body, the turning cylinder that is connected with speed reducer output shaft is equipped with in cylindrical shell one end central authorities, it is characterized in that: horizontal turning cylinder is installed in the horizontal cylindrical tube body; Dialling of some is installed on the turning cylinder of cylindrical tube expects connecting rod; Said group of switch-plate of expecting to be fixed with on the connecting rod some inclinations certain angle, feed hopper and exhaust outlet are located at the same end of cylindrical shell, and discharging opening and hot gas air inlet are located at the other end of cylindrical shell.This utility model is when handling the material dehumidification, and compound is handled together, does not consider the influence of the water content and the dehumidification characteristic of material of different grain size, and material dehumidification effect is inhomogeneous.
CN101786080A discloses a kind of fluidized bed air separating damping machine and selection by winnowing damping new technology; This invention relates to the equipment and the technology of a kind of granule materials humidity regulation and grading, especially can realize reducing granule materials moisture simultaneously and by a kind of fluidized bed air separating damping machine and the selection by winnowing damping new technology of granule materials granule size classification.Fine granular materials in the granule materials under the fluidized state is concentrated discharging by the fine grained delivery pipe, and remaining coarse granule material is scraped to the coarse granule delivery pipe concentrates discharging, in grading, has realized the reduction of moisture.
CN101709913A relates to a kind of full-boiling cyclone fluidized bed damping machine and damping new technology; The full-boiling cyclone fluidized bed lathe bed that in closed casing, is provided with is divided into dry leading portion lathe bed and dry back segment lathe bed; Dry leading portion lathe bed below and dry back segment lathe bed below are respectively equipped with dry leading portion air compartment and dry back segment air compartment, and dry back segment lathe bed afterbody communicates with dried particles material delivery pipe.Get into dried particles material delivery pipe granule materials is taken away large quantity of moisture by hot gas in closed casing after and concentrate discharging.
Though the classification dehumidification has been accomplished in above-mentioned two inventions; But its damping process is in a single unit system; One endfeed, other end discharging with and cloth wind distributing mode determined it can not control the time of staying accurately, easily to the coarsegrain material; The coarsegrain material moisture is minimum but the time of staying is the longest; Promptly can not accurately control it and contact the dehumidification time with thermal current, cause the easy dehumidification of large granular materials excessive, thereby can't in same device, realize the classification and the stable and controllable dehumidification of solid material simultaneously according to material of different grain size water capacity and dehumidification dynamics.
Summary of the invention
Based on above-mentioned technical problem, the object of the present invention is to provide a kind of wide size distribution material dehumidification pretreatment unit.
Its technical solution is:
A kind of wide size distribution material dehumidification pretreatment unit; It comprises bottom moving bed section, the upper air Transport Bed section that is interconnected, the fluid bed section that is positioned at bottom moving bed section and upper air Transport Bed section junction one side; Be provided with the vertical dividing plate of fluid bed at the fluid bed section discharge end; It is the passage of upper air Transport Bed section feed that the top of the vertical dividing plate of fluid bed forms fluid bed section; It is the passage of bottom moving bed section feed that the below of the vertical dividing plate of fluid bed forms fluid bed section; The top exit of upper air Transport Bed section is connected with gas-solid separator, and the gas-solid separator bottom is provided with small particle diameter material discharging opening, and the bottom of bottom moving bed section is provided with big particle diameter material discharging opening.
Further; Small particle diameter material discharging opening is communicated with material returning device; Top at material returning device is provided with overflow pipe, and overflow pipe is communicated with bottom moving bed section discharge end, and moving bed section discharge end is provided with the vertical dividing plate of moving bed in the bottom; The top of the vertical dividing plate of moving bed forms the gas passage that gets into bottom moving bed section from the gas of material returning device, and the below of the vertical dividing plate of moving bed forms the mixing discharging opening from the big particle diameter material of the small particle diameter material of material returning device and bottom moving bed section.
Further, the vertical dividing plate of fluid bed is Height Adjustable single dividing plate or is made up of with respect to all adjustable adjustable dividing plate of stationary barrier a stationary barrier and a height and/or flip angle.
The bottom of above-mentioned fluid bed section and bottom moving bed section is equipped with air distribution plate, and the air distribution plate below is provided with the hot blast chamber.
Further, the angle of inclination of the air distribution plate of bottom moving bed section bottom setting can be regulated between 5 °～80 °.
Compared with prior art, useful technique effect of the present invention is:
The present invention has combined the grading function and the uniform characteristics of cloth of fluid bed; Different according to granule size with water capacity; Be respectively upper air Transport Bed section and bottom moving bed section feed, thereby can give full play to air flow bed and moving bed advantage to the material of different grain size dehumidification.In fluid bed section; Control fluid bed discharging opening size and bed depth through regulating gas speed and the vertical dividing plate height of fluid bed; Material from the fluid bed inlet is evenly distributed in fluid bed as early as possible; When carrying out grading and part dehumidification; Large and small particle diameter material respectively through passage separately, at moving bed section and air-flow Transport Bed section inlet uniform distribution, and then the material to different grain size and humidity separates dehumidification in air-flow Transport Bed section and moving bed section, and through regulating air distribution plate angle of inclination bottom the fast and moving bed section of air-flow Transport Bed Duan Zhongqi; But the conveniently regulating and controlling material contacts the dehumidification time with thermal current, thereby in same device, realizes the classification and the stable and controllable dehumidification of solid material simultaneously.Adopting the fluid bed discharge end directly is moving bed and air-flow Transport Bed feed; Make cloth more even; And then make moving bed and air-flow Transport Bed stable, and solve its industry and amplified the uniform distribution problem that exists, help realizing applying of high throughput commercial plant.And the small particle diameter material after the damping, gas solid separation is through the vertical dividing plate of moving bed of material returning device and moving bed discharge end, can smooth and easy discharging and evenly mix the unified discharge in back with large granular materials.When the large and small granule materials difference of needs discharge, the pipeline that can not install material returning device additional and link to each other, and the small particle diameter material discharging opening discharge that directly is provided with by the gas-solid separator bottom with the moving bed discharge end.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described further:
Fig. 1 is the structural representation of one embodiment of the present invention.
Among the figure: the 1-fluid bed section; 2-bottom moving bed section; 3-upper air Transport Bed section; The 4-gas-solid separator; The 5-material returning device; The 6-inlet; 7-mixing discharging opening; The 8-exhaust outlet; 9-fluid bed heat air compartment; 10-moving bed hot blast chamber; The vertical dividing plate of 11-fluid bed; The vertical dividing plate of 12-moving bed.
The specific embodiment
As shown in Figure 1, a kind of wide size distribution material dehumidification pretreatment unit, the fluid bed section 1 that it comprises bottom moving bed section 2, the upper air Transport Bed section 3 that is interconnected and is positioned at bottom moving bed section 2 and right side, upper air Transport Bed section 3 junction.The bottom of fluid bed section 1 and bottom moving bed section 2 is equipped with air distribution plate, and the air distribution plate below is provided with fluid bed heat air compartment 9 and moving bed hot blast chamber 10, is respectively fluid bed section 1 and moving bed section 2 heat supply air-flows.The angle of inclination of the air distribution plate that moving bed section 2 bottoms, bottom are provided with can be regulated between 5 °～80 °, is used to control the time of staying of material in bottom moving bed section 2, and then the dehumidification effect of control material.Fluid bed section 1 top is provided with inlet 6, and fluid bed section 1 discharge end is provided with the vertical dividing plate 11 of adjustable for height fluid bed, forms the passage that big particle diameter material gets into bottom moving bed section 2 between the lower end of the vertical dividing plate 11 of fluid bed and air distribution plate; Form the passage of small particle diameter material and gas entering top Transport Bed section 3 between its upper end and fluid bed top cover, realize that fluid bed section 1 is respectively bottom moving bed section 2 and top Transport Bed section 3 feed.The channel sized that is positioned at fluid bed vertical dividing plate 11 tops or bottom can promptly highly be controlled through the relative position of regulating the vertical dividing plate 11 of fluid bed.Upper air Transport Bed section 3 top exits are connected with gas-solid separator 4; Gas-solid separator 4 can be the coupling of cyclone separator, gravity settling chamber or multiple gas-solid separation equipment; Gas-solid separator 4 tops connect exhaust outlet 8, and the bottom of gas-solid separator 4 is provided with small particle diameter material discharging opening.Small particle diameter material discharging opening is communicated with material returning device 5, and material returning device 5 bottom air feeds are provided with overflow pipe on the top of material returning device 5, and overflow pipe is communicated with bottom moving bed section discharge end.Moving bed section discharge end is provided with the vertical dividing plate 12 of moving bed in the bottom; Its top forms the gas passage that gets into moving bed section 2 from the gas of material returning device, and the below forms the mixing discharging opening 7 from the big particle diameter material of the small particle diameter material of material returning device and bottom moving bed section.
The course of work of this device is: hot blast gets into fluid bed section 1 by fluid bed heat air compartment 9 through air distribution plate, treats that the dehumidification material is fallen in the fluid bed section 1 by inlet 6; Regulate the height of gas speed and the vertical dividing plate 11 of fluid bed, make material fluidisation in fluid bed even, and along with air-flow is shifted to discharge end; Part dehumidification and classification take place simultaneously; Material arrives the vertical dividing plate of fluid bed 11 places that are positioned at the fluid bed discharge end, and the small particle diameter material upwards gets into upper air Transport Bed section 3 under the thermal current effect, behind desorption of moisture; Get into gas-solid separator 4 and realize gas solid separation; And in falling into material returning device 5, get into the moving bed discharge end through overflow pipe again, finally discharge by mixing discharging opening 7; The big particle diameter material in the vertical dividing plate of fluid bed 11 places falls into bottom moving bed section 2 and moves downward until the vertical dividing plate of moving bed 12 places, and the small particle diameter material that continues to transport with material returning device is downwards discharged by mixing discharging opening 7.In this process; Falling into the material of moving bed section contacts with hot blast from moving bed hot blast chamber 10 and continues dehumidification; Receive collision each other to wait effect simultaneously; Make the granule that sticks on the bulky grain come off, separate, and under the thermal current effect, upwards get into air-flow Transport Bed section 3, with the vertical dividing plate of fluid bed 11 upper ends outlets from the small particles material of fluid bed section via air-flow Transport Bed section 3 desorption of moistures after; Get into gas-solid separator 4 and realize gas solid separation, and finally discharge by bottom mixing discharging opening 7 through material returning device 5.
Be necessary to be pointed out that at this; Above-mentioned explanation is not to be limitation of the present invention; The present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that the technical staff in present technique field is made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (5)
1. one kind wide size distribution material dehumidification pretreatment unit; Be characterised in that: it comprises bottom moving bed section, the upper air Transport Bed section that is interconnected, the fluid bed section that is positioned at bottom moving bed section and upper air Transport Bed section junction one side; Be provided with the vertical dividing plate of fluid bed at the fluid bed section discharge end; It is the passage of upper air Transport Bed section feed that the top of the vertical dividing plate of fluid bed forms fluid bed section; It is the passage of bottom moving bed section feed that the below of the vertical dividing plate of fluid bed forms fluid bed section; The top exit of upper air Transport Bed section is connected with gas-solid separator, and the gas-solid separator bottom is provided with small particle diameter material discharging opening, and the bottom of bottom moving bed section is provided with big particle diameter material discharging opening.
2. a kind of wide size distribution material dehumidification pretreatment unit according to claim 1; It is characterized in that: small particle diameter material discharging opening is communicated with material returning device; Top at material returning device is provided with overflow pipe; Overflow pipe is communicated with bottom moving bed section discharge end; Moving bed section discharge end is provided with the vertical dividing plate of moving bed in the bottom, and the top of the vertical dividing plate of moving bed forms the gas passage that gets into bottom moving bed section from the gas of material returning device, and the below of the vertical dividing plate of moving bed forms the mixing discharging opening from the big particle diameter material of the small particle diameter material of material returning device and bottom moving bed section.
3. a kind of wide size distribution material dehumidification pretreatment unit according to claim 1 and 2 is characterized in that: the vertical dividing plate of fluid bed is Height Adjustable single dividing plate or is made up of with respect to all adjustable adjustable dividing plate of stationary barrier a stationary barrier and a height and/or flip angle.
4. a kind of wide size distribution material dehumidification pretreatment unit according to claim 1, it is characterized in that: the bottom of fluid bed section and bottom moving bed section is equipped with air distribution plate, and the air distribution plate below is provided with the hot blast chamber.
5. a kind of wide size distribution material dehumidification pretreatment unit according to claim 4 is characterized in that: the angle of inclination of the air distribution plate that moving bed section bottom in bottom is provided with can be regulated between 5 °～80 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104446215A CN102519223B (en) | 2011-12-27 | 2011-12-27 | A dehumidification pretreatment device for materials with wide particle size distribution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104446215A CN102519223B (en) | 2011-12-27 | 2011-12-27 | A dehumidification pretreatment device for materials with wide particle size distribution |
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| CN102519223B CN102519223B (en) | 2012-11-14 |
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Cited By (4)
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| WO2018006176A1 (en) * | 2016-07-06 | 2018-01-11 | Lionheart Investments Inc. | Improved dryer for particulate matter |
| CN110173975A (en) * | 2019-06-28 | 2019-08-27 | 攀钢集团钒钛资源股份有限公司 | Vanadium slag pellet dries distribution device |
| CN113203251A (en) * | 2021-04-30 | 2021-08-03 | 陕西科技大学 | Cereal fluidized bed drying device |
| CN114646207A (en) * | 2022-03-21 | 2022-06-21 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
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| CN113203251A (en) * | 2021-04-30 | 2021-08-03 | 陕西科技大学 | Cereal fluidized bed drying device |
| CN113203251B (en) * | 2021-04-30 | 2022-09-09 | 陕西科技大学 | Cereal fluidized bed drying device |
| CN114646207A (en) * | 2022-03-21 | 2022-06-21 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
| CN114646207B (en) * | 2022-03-21 | 2023-04-07 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
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| Publication number | Publication date |
|---|---|
| CN102519223B (en) | 2012-11-14 |
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