CN101169305A - Multiple-stage combination tower type drying apparatus and drying process - Google Patents
Multiple-stage combination tower type drying apparatus and drying process Download PDFInfo
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- CN101169305A CN101169305A CNA2007101142866A CN200710114286A CN101169305A CN 101169305 A CN101169305 A CN 101169305A CN A2007101142866 A CNA2007101142866 A CN A2007101142866A CN 200710114286 A CN200710114286 A CN 200710114286A CN 101169305 A CN101169305 A CN 101169305A
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- 238000001035 drying Methods 0.000 title claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 23
- 238000010791 quenching Methods 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims description 22
- 230000000171 quenching effect Effects 0.000 claims description 20
- 239000002912 waste gas Substances 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 3
- 239000002352 surface water Substances 0.000 claims description 3
- 238000005243 fluidization Methods 0.000 abstract description 4
- 239000003517 fume Substances 0.000 abstract 3
- 239000000428 dust Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The invention relates to a multi-stage combining tower type drying device which mainly consists of a drying unit, a box body, a wet material entrance, a product exit, etc. The drying unit consists of a gas distributing board, a baseboard, a front board, a star-shaped vale, a hot fume entrance and an exhaust gas exit which are welded together with the box body. The water quench slag wet materials are sent to the top of the gas distributing board on the most top after being dehydrated for partial water, the waste fume near the high furnace dries the thin grains with fluidization, but the coarse grains are dries as moving on the gas distributing board. As the continuously adding of the wet materials, the materials of the superior grade drying unit orderly enter the secondary unit to proceed the drying under the control of the star-shaped valve, and finally the obtained qualified high furnace water quench slag is discharged out from the product exit. The fume is induced by a draught fan after passing a dust remover. The invention has simple structure, convenient operation, reducing pressure of the bed layer and energy saving ability. The method can fulfill the even fluidization and moving of the water quench slag grains distributed with wide grain degree in the device and enables the operation process to be stably carried out.
Description
Technical field
The invention belongs to drying equipment and field of engineering technology, relate to a kind of multiple-stage combination tower type drying apparatus and drying process of blast furnace water quenching slag.
Background technology
The blast furnace water quenching slag that produces behind the water quenching technology contains a large amount of moisture.Adopt the nature heap method of drying in the air generally can only remove surperficial very thin one layer surface moisture, very high moisture is still contained in its inside, but also will be subjected to weather and cool restriction of shining the place.Because the density of this Water Quenching Slag is bigger, and particle size distribution is again than broad, if adopt common fluidized bed drying equipment, as single-layer fluidized bed drier, multi-stage fluidized bed dryer, horizontal multicompartment fluidized bed dryer etc., bulky grain will occur and also not be fluidized, and granule has been taken away by air-flow; For multi-stage fluidized bed dryer, its pressure falls bigger.
Summary of the invention
The multiple-stage combination tower type drying apparatus and the drying process that the purpose of this invention is to provide a kind of blast furnace water quenching slag with the Water Quenching Slag particle of realizing wide size distribution fluidisation or move equably in this drying equipment, stably carry out operating process.
The present invention is achieved through the following technical solutions, and this kind multiple-stage combination tower type drying apparatus mainly is made up of drying unit, casing, wet stock inlet and products export, it is characterized in that:
1) progression of drying unit is 2～10 grades, and the distance between two adjacent drying units is 1000～2000mm up and down; The wet stock inlet is positioned at the top of first order drying unit;
2) described drying unit is welded together and is constituted by gas distribution grid, base plate, header board, star valve, auger conveyor, hot smoke inlet and waste gas outlet and casing; Have uniform oblique circular hole road on the gas distribution grid, channel diameter is 1～3mm, and percent opening is 3～25%, the angle of inclination of inclined hole is 5～15 °, the angle of gas distribution grid and horizontal plane is 2～10 °, and the angle of base plate and horizontal plane is 40～70 °, and preceding plate height is 200～400mm; Auger conveyor is positioned at the lower end of base plate, is provided with star valve between each header board and casing, and hot smoke inlet communicates on the casing between gas distribution grid and the base plate and with drying unit; Also be provided with the waste gas outlet that communicates with drying unit on the casing.
Adopt the method for the dry blast furnace water quenching slag of above-mentioned multiple-stage combination tower type drying apparatus to be: will directly be added to from 40～50 ℃ of Water Quenching Slag wet stocks of water quenching technology take off part surface water on the pre-dewatering conveyor after, be sent on the gas distribution grid of uppermost first order drying unit, by the useless flue gas of blast furnace fine grained is carried out fluidized drying, and coarse granule moves the limit drying in the gas distribution grid top, continuous adding along with wet stock, the material of first order drying unit is under the control of star valve, the second level drying unit that enters below it carries out drying, enter the next stage unit successively and proceed drying, after entering nethermost afterbody drying unit, obtain qualified blast furnace water quenching slag and discharge by products export; Waste gas is drawn by air-introduced machine behind deduster.
The invention has the beneficial effects as follows: device structure is simple, and is easy to manufacture, and floor space is little, easy to operate, and bed layer pressure is fallen little.Utilize the useless flue gas of blast furnace as drying source, make used heat obtain recycling, save the energy.The Water Quenching Slag granule materials of having realized wide size distribution fluidisation or move equably in the multiple-stage combination tower type drier is stably carried out operating process.
Description of drawings
Fig. 1 is the structural representation of multiple-stage combination tower type drier;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 utilizes the multiple-stage combination tower type drier to carry out the process flow diagram of Water Quenching Slag drying.
Among the figure: 1. products export; 2. star valve; 3. hot smoke inlet; 4. base plate; 5. waste gas outlet; 6. wet stock enters the mouth; 7. drying unit; 8. auger conveyor; 9. gas distribution grid; 10. header board; 11. casing; 12. air blast; 13. multiple-stage combination tower type drier; 14. deduster; 15. air-introduced machine; 16. butterfly valve; 17. pre-dewatering conveyor.
The specific embodiment
Further specify implementation method of the present invention below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2,
This kind multiple-stage combination tower type drying apparatus mainly is made up of drying unit 7, casing 11, wet stock inlet 6 and products export 1.
Drying unit 7 is welded together and constitutes with casing 11 by gas distribution grid 9, base plate 4, header board 10, auger conveyor 8, hot smoke inlet 3 and waste gas outlet 5, have uniform oblique circular hole road on the gas distribution grid 9, channel diameter is 1～3mm, percent opening is 2～10%, the angle of inclination of inclined hole is 5～15 °, the angle of gas distribution grid and horizontal plane is 2～10 °, and the angle of base plate and horizontal plane is 40～70 °, and preceding plate height is 200～400mm.Auger conveyor 8 is positioned at the lower end of base plate 4, is provided with star valve 2 between each header board and casing, and hot smoke inlet 3 communicates on the casing between gas distribution grid and the base plate and with drying unit; On casing 11, communicate and be provided with two waste gas outlets 5 with each drying unit.Because adjacent drying unit 7 is crisscross arranged up and down, so auger conveyor 8 and star valve 2 are at casing both sides above-below direction also interlaced arrangement.
The progression of drying unit is 2～10 grades, and the distance between two adjacent drying units is 1000～2000mm up and down; Wet stock inlet 6 is positioned at the top of first order drying unit; Products export 1 is positioned at the bottom of multiple-stage combination tower type drying apparatus 13.
As shown in Figure 3, from 40～50 ℃ of Water Quenching Slag wet stocks of water quenching technology directly be added to take off part surface water on the pre-dewatering conveyor 17 after, enter on the gas distribution grid of multiple-stage combination tower type drier 13 uppermost first order drying units 7 through Water Quenching Slag wet stock inlet 6, the useless flue gas of sending into through air blast 12 and Ge Re smoke inlet 3 of blast furnace carries out fluidized drying with fine grained, and coarse granule moves the limit drying in inclined hole gas distribution grid top, continuous adding along with wet stock, the material of first order unit is under the control of star valve 2, the unit, the second level that enters below it carries out drying, drying is proceeded in the third level unit that the material of unit, the second level enters below it again, after entering nethermost afterbody drying unit, obtain qualified blast furnace water quenching slag and discharge by products export 1.The waste gas of each waste gas outlet is drawn by air-introduced machine 15 behind deduster 14.The product that deduster separates is the fine grained product.The effect of auger conveyor 8 is the granule materials of discharging in the drying unit that bleeds.The butterfly valve 16 that is provided with after air blast 12 and before the air-introduced machine 15 is used for the adjustments of gas flow.Advance 40～50 ℃ of preceding Water Quenching Slag of drier and directly be added on the pre-dewatering conveyor 17, realize the limit conveying, too much surface moisture is taken off on the limit naturally; Also save the temperature rise period of wet stock dry run.Utilize star valve 2 to control bed height as the downflow weir of every grade of drying unit.
Claims (2)
1. a multiple-stage combination tower type drying apparatus mainly is made up of drying unit, casing, wet stock inlet and products export, it is characterized in that:
1) progression of drying unit is 2～10 grades, and the distance between two adjacent drying units is 1000～2000mm up and down; The wet stock inlet is positioned at the top of first order drying unit;
2) described drying unit is welded together and is constituted by gas distribution grid, base plate, header board, star valve, auger conveyor, hot smoke inlet and waste gas outlet and casing; Have uniform oblique circular hole road on the gas distribution grid, channel diameter is 1～3mm, and percent opening is 3～25%, the angle of inclination of inclined hole is 5～15 °, the angle of gas distribution grid and horizontal plane is 2～10 °, and the angle of base plate and horizontal plane is 40～70 °, and preceding plate height is 200～400mm; Auger conveyor is positioned at the lower end of base plate, is provided with star valve between each header board and casing, and hot smoke inlet communicates on the casing between gas distribution grid and the base plate and with drying unit; Also be provided with the waste gas outlet that communicates with drying unit on the casing.
2. one kind is utilized the described equipment of claim 1 to carry out dry method, it is characterized in that: will directly be added to from 40～50 ℃ of Water Quenching Slag wet stocks of water quenching technology take off part surface water on the pre-dewatering conveyor after, be sent on the gas distribution grid of uppermost first order drying unit, by the useless flue gas of blast furnace fine grained is carried out fluidized drying, and coarse granule moves the limit drying in the gas distribution grid top, continuous adding along with wet stock, the material of first order drying unit is under the control of star valve, the second level drying unit that enters below it carries out drying, enter the next stage unit successively and proceed drying, after entering nethermost afterbody drying unit, obtain qualified blast furnace water quenching slag and discharge by products export; Waste gas is drawn by air-introduced machine behind deduster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101142866A CN101169305A (en) | 2007-11-20 | 2007-11-20 | Multiple-stage combination tower type drying apparatus and drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101142866A CN101169305A (en) | 2007-11-20 | 2007-11-20 | Multiple-stage combination tower type drying apparatus and drying process |
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| Publication Number | Publication Date |
|---|---|
| CN101169305A true CN101169305A (en) | 2008-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101142866A Pending CN101169305A (en) | 2007-11-20 | 2007-11-20 | Multiple-stage combination tower type drying apparatus and drying process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726168B (en) * | 2009-11-30 | 2011-03-16 | 广西大学 | Bagasse tower-type multi-layer dryer |
| CN104006631A (en) * | 2014-06-13 | 2014-08-27 | 济宁学院 | Microwave multistage fluidized bed drying device and drying method thereof |
| CN106949483A (en) * | 2017-05-08 | 2017-07-14 | 宜兴福鼎环保工程有限公司 | A kind of closed-type feed conveying device |
| CN112944382A (en) * | 2021-02-05 | 2021-06-11 | 河南省锅炉压力容器安全检测研究院 | High-water-content biomass fuel smoke waste heat utilization and drying intervention treatment device |
-
2007
- 2007-11-20 CN CNA2007101142866A patent/CN101169305A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726168B (en) * | 2009-11-30 | 2011-03-16 | 广西大学 | Bagasse tower-type multi-layer dryer |
| CN104006631A (en) * | 2014-06-13 | 2014-08-27 | 济宁学院 | Microwave multistage fluidized bed drying device and drying method thereof |
| CN104006631B (en) * | 2014-06-13 | 2015-09-16 | 济宁学院 | A kind of Multistage Microwave fluidized bed drying device and drying means thereof |
| CN106949483A (en) * | 2017-05-08 | 2017-07-14 | 宜兴福鼎环保工程有限公司 | A kind of closed-type feed conveying device |
| CN112944382A (en) * | 2021-02-05 | 2021-06-11 | 河南省锅炉压力容器安全检测研究院 | High-water-content biomass fuel smoke waste heat utilization and drying intervention treatment device |
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Open date: 20080430 |